/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 00:31:13,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 00:31:13,838 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 00:31:13,906 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 00:31:13,907 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 00:31:13,911 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 00:31:13,915 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 00:31:13,922 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 00:31:13,925 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 00:31:13,931 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 00:31:13,932 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 00:31:13,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 00:31:13,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 00:31:13,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 00:31:13,940 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 00:31:13,946 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 00:31:13,947 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 00:31:13,949 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 00:31:13,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 00:31:13,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 00:31:13,967 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 00:31:13,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 00:31:13,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 00:31:13,973 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 00:31:13,983 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 00:31:13,997 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 00:31:13,998 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 00:31:13,999 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 00:31:14,004 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-16 00:31:14,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 00:31:14,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 00:31:14,056 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 00:31:14,056 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 00:31:14,057 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 00:31:14,057 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 00:31:14,060 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 00:31:14,061 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 00:31:14,061 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 00:31:14,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 00:31:14,062 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 00:31:14,063 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 00:31:14,064 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 00:31:14,064 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 00:31:14,064 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 00:31:14,064 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 00:31:14,064 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 00:31:14,065 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 00:31:14,065 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 00:31:14,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 00:31:14,065 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:31:14,065 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 00:31:14,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 00:31:14,066 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 00:31:14,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 00:31:14,066 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 00:31:14,505 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 00:31:14,531 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 00:31:14,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 00:31:14,536 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 00:31:14,536 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 00:31:14,538 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c [2022-10-16 00:31:14,622 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06b74969/fffdf4e82951432499af22cae8750ea2/FLAG5a5a79b80 [2022-10-16 00:31:15,344 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 00:31:15,345 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c [2022-10-16 00:31:15,353 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06b74969/fffdf4e82951432499af22cae8750ea2/FLAG5a5a79b80 [2022-10-16 00:31:15,692 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d06b74969/fffdf4e82951432499af22cae8750ea2 [2022-10-16 00:31:15,697 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 00:31:15,704 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 00:31:15,708 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 00:31:15,708 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 00:31:15,714 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 00:31:15,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:31:15" (1/1) ... [2022-10-16 00:31:15,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e475dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:15, skipping insertion in model container [2022-10-16 00:31:15,717 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 12:31:15" (1/1) ... [2022-10-16 00:31:15,727 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 00:31:15,746 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 00:31:15,950 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c[331,344] [2022-10-16 00:31:15,976 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:31:15,985 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 00:31:15,999 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-programs/partial_mod_count_limited_2.c[331,344] [2022-10-16 00:31:16,010 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 00:31:16,027 INFO L208 MainTranslator]: Completed translation [2022-10-16 00:31:16,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16 WrapperNode [2022-10-16 00:31:16,028 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 00:31:16,029 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 00:31:16,029 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 00:31:16,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 00:31:16,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,081 INFO L138 Inliner]: procedures = 15, calls = 16, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 68 [2022-10-16 00:31:16,081 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 00:31:16,082 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 00:31:16,082 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 00:31:16,082 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 00:31:16,094 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,094 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,097 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,097 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,110 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,112 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 00:31:16,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 00:31:16,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 00:31:16,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 00:31:16,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (1/1) ... [2022-10-16 00:31:16,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 00:31:16,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:16,160 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) [2022-10-16 00:31:16,178 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 [2022-10-16 00:31:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 00:31:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 00:31:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 00:31:16,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 00:31:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 00:31:16,228 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 00:31:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 00:31:16,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 00:31:16,313 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 00:31:16,316 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 00:31:16,636 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 00:31:16,646 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 00:31:16,647 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-10-16 00:31:16,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:31:16 BoogieIcfgContainer [2022-10-16 00:31:16,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 00:31:16,654 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 00:31:16,654 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 00:31:16,688 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 00:31:16,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 12:31:15" (1/3) ... [2022-10-16 00:31:16,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1a6094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:31:16, skipping insertion in model container [2022-10-16 00:31:16,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 12:31:16" (2/3) ... [2022-10-16 00:31:16,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b1a6094 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 12:31:16, skipping insertion in model container [2022-10-16 00:31:16,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 12:31:16" (3/3) ... [2022-10-16 00:31:16,693 INFO L112 eAbstractionObserver]: Analyzing ICFG partial_mod_count_limited_2.c [2022-10-16 00:31:16,751 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 00:31:16,752 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2022-10-16 00:31:16,847 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 00:31:16,864 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=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@75d81f9e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 00:31:16,864 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2022-10-16 00:31:16,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:16,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:31:16,894 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:16,895 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:31:16,897 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:16,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:16,906 INFO L85 PathProgramCache]: Analyzing trace with hash 889508873, now seen corresponding path program 1 times [2022-10-16 00:31:16,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:16,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624021449] [2022-10-16 00:31:16,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:16,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:17,107 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:17,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1892821005] [2022-10-16 00:31:17,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:17,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:17,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:17,113 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) [2022-10-16 00:31:17,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 00:31:17,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:17,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-16 00:31:17,230 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:17,257 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:17,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:17,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624021449] [2022-10-16 00:31:17,258 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:17,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892821005] [2022-10-16 00:31:17,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892821005] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:17,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:17,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:31:17,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922641458] [2022-10-16 00:31:17,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:17,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-16 00:31:17,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:17,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-16 00:31:17,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 00:31:17,319 INFO L87 Difference]: Start difference. First operand has 34 states, 23 states have (on average 1.826086956521739) internal successors, (42), 33 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-10-16 00:31:17,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:17,341 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2022-10-16 00:31:17,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-16 00:31:17,344 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:31:17,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:17,356 INFO L225 Difference]: With dead ends: 34 [2022-10-16 00:31:17,356 INFO L226 Difference]: Without dead ends: 32 [2022-10-16 00:31:17,359 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-16 00:31:17,364 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:17,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:31:17,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-10-16 00:31:17,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2022-10-16 00:31:17,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.6363636363636365) internal successors, (36), 31 states have internal predecessors, (36), 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) [2022-10-16 00:31:17,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2022-10-16 00:31:17,415 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 6 [2022-10-16 00:31:17,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:17,416 INFO L495 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2022-10-16 00:31:17,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2022-10-16 00:31:17,416 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2022-10-16 00:31:17,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:31:17,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:17,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:31:17,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:17,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2022-10-16 00:31:17,632 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:17,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:17,634 INFO L85 PathProgramCache]: Analyzing trace with hash 889568455, now seen corresponding path program 1 times [2022-10-16 00:31:17,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:17,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657439343] [2022-10-16 00:31:17,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:17,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:17,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:17,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [741255158] [2022-10-16 00:31:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:17,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:17,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:17,654 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) [2022-10-16 00:31:17,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 00:31:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:17,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 00:31:17,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:17,838 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:17,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:17,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:17,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:17,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657439343] [2022-10-16 00:31:17,867 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:17,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741255158] [2022-10-16 00:31:17,867 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741255158] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:17,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:17,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 00:31:17,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913271576] [2022-10-16 00:31:17,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:17,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 00:31:17,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:17,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 00:31:17,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:31:17,871 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-16 00:31:17,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:17,919 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2022-10-16 00:31:17,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 00:31:17,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:31:17,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:17,925 INFO L225 Difference]: With dead ends: 28 [2022-10-16 00:31:17,925 INFO L226 Difference]: Without dead ends: 28 [2022-10-16 00:31:17,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 00:31:17,929 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:17,934 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 23 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:31:17,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-10-16 00:31:17,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-10-16 00:31:17,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 27 states have internal predecessors, (32), 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) [2022-10-16 00:31:17,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2022-10-16 00:31:17,944 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 6 [2022-10-16 00:31:17,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:17,945 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2022-10-16 00:31:17,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-10-16 00:31:17,946 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2022-10-16 00:31:17,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-16 00:31:17,947 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:17,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-16 00:31:18,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:18,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2022-10-16 00:31:18,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:18,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:18,161 INFO L85 PathProgramCache]: Analyzing trace with hash 889568456, now seen corresponding path program 1 times [2022-10-16 00:31:18,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:18,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007253429] [2022-10-16 00:31:18,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:18,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:18,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:18,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819478364] [2022-10-16 00:31:18,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:18,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:18,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:18,193 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) [2022-10-16 00:31:18,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 00:31:18,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:18,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-16 00:31:18,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:18,377 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:18,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:18,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:18,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:18,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007253429] [2022-10-16 00:31:18,454 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:18,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819478364] [2022-10-16 00:31:18,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1819478364] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:18,455 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:18,455 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 00:31:18,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395116749] [2022-10-16 00:31:18,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:18,456 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:31:18,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:18,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:31:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:31:18,458 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-10-16 00:31:18,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:18,583 INFO L93 Difference]: Finished difference Result 43 states and 49 transitions. [2022-10-16 00:31:18,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:31:18,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-10-16 00:31:18,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:18,586 INFO L225 Difference]: With dead ends: 43 [2022-10-16 00:31:18,586 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 00:31:18,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:31:18,588 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 86 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:18,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 24 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:31:18,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 00:31:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 34. [2022-10-16 00:31:18,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 33 states have internal predecessors, (38), 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) [2022-10-16 00:31:18,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-10-16 00:31:18,605 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 6 [2022-10-16 00:31:18,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:18,606 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-10-16 00:31:18,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.5) internal successors, (6), 4 states have internal predecessors, (6), 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) [2022-10-16 00:31:18,609 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-10-16 00:31:18,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:31:18,610 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:18,610 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:18,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:18,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:18,812 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:18,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:18,814 INFO L85 PathProgramCache]: Analyzing trace with hash -866549681, now seen corresponding path program 1 times [2022-10-16 00:31:18,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:18,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450681473] [2022-10-16 00:31:18,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:18,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:18,833 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:18,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077624856] [2022-10-16 00:31:18,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:18,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:18,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:18,836 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) [2022-10-16 00:31:18,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-16 00:31:18,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:18,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:31:18,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:18,931 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-16 00:31:18,968 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 15 treesize of output 7 [2022-10-16 00:31:18,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:18,979 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:18,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:18,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450681473] [2022-10-16 00:31:18,980 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077624856] [2022-10-16 00:31:18,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1077624856] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:18,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:18,981 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:31:18,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185205636] [2022-10-16 00:31:18,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:18,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-16 00:31:18,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:18,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-16 00:31:18,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-10-16 00:31:18,985 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-10-16 00:31:19,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:19,092 INFO L93 Difference]: Finished difference Result 43 states and 48 transitions. [2022-10-16 00:31:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:31:19,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 00:31:19,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:19,098 INFO L225 Difference]: With dead ends: 43 [2022-10-16 00:31:19,098 INFO L226 Difference]: Without dead ends: 43 [2022-10-16 00:31:19,099 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:31:19,106 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 12 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:19,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 68 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:31:19,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-10-16 00:31:19,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 35. [2022-10-16 00:31:19,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 29 states have (on average 1.3448275862068966) internal successors, (39), 34 states have internal predecessors, (39), 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) [2022-10-16 00:31:19,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2022-10-16 00:31:19,132 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 12 [2022-10-16 00:31:19,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:19,132 INFO L495 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2022-10-16 00:31:19,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-10-16 00:31:19,135 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2022-10-16 00:31:19,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 00:31:19,136 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:19,137 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:19,181 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:19,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:19,351 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:19,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:19,353 INFO L85 PathProgramCache]: Analyzing trace with hash -866490099, now seen corresponding path program 1 times [2022-10-16 00:31:19,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:19,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792066098] [2022-10-16 00:31:19,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:19,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:19,371 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:19,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1449926379] [2022-10-16 00:31:19,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:19,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:19,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:19,374 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) [2022-10-16 00:31:19,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-16 00:31:19,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:19,444 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:31:19,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:19,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:19,609 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:19,609 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:19,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:19,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792066098] [2022-10-16 00:31:19,784 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:19,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449926379] [2022-10-16 00:31:19,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449926379] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:19,785 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:19,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 8 [2022-10-16 00:31:19,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979943740] [2022-10-16 00:31:19,786 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:19,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:31:19,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:19,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:31:19,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:31:19,788 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:20,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:20,074 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2022-10-16 00:31:20,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:31:20,075 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 00:31:20,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:20,077 INFO L225 Difference]: With dead ends: 80 [2022-10-16 00:31:20,077 INFO L226 Difference]: Without dead ends: 80 [2022-10-16 00:31:20,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2022-10-16 00:31:20,079 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 266 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 50 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:20,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 50 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:31:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2022-10-16 00:31:20,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2022-10-16 00:31:20,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70 states, 66 states have (on average 1.3181818181818181) internal successors, (87), 69 states have internal predecessors, (87), 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) [2022-10-16 00:31:20,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2022-10-16 00:31:20,089 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2022-10-16 00:31:20,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:20,090 INFO L495 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2022-10-16 00:31:20,090 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 9 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:20,091 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2022-10-16 00:31:20,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-10-16 00:31:20,092 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:20,092 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:20,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:20,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:20,307 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:20,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:20,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1405816076, now seen corresponding path program 1 times [2022-10-16 00:31:20,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:20,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902874] [2022-10-16 00:31:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:20,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:20,327 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:20,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1039310528] [2022-10-16 00:31:20,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:20,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:20,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:20,330 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) [2022-10-16 00:31:20,353 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-16 00:31:20,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:20,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-16 00:31:20,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:20,506 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:20,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:20,577 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:20,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:20,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902874] [2022-10-16 00:31:20,578 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:20,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1039310528] [2022-10-16 00:31:20,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1039310528] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:20,579 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:20,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 00:31:20,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738270029] [2022-10-16 00:31:20,579 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:20,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:31:20,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:20,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:31:20,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:31:20,582 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:20,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:20,803 INFO L93 Difference]: Finished difference Result 107 states and 122 transitions. [2022-10-16 00:31:20,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-16 00:31:20,804 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-10-16 00:31:20,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:20,805 INFO L225 Difference]: With dead ends: 107 [2022-10-16 00:31:20,805 INFO L226 Difference]: Without dead ends: 107 [2022-10-16 00:31:20,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=87, Unknown=0, NotChecked=0, Total=156 [2022-10-16 00:31:20,807 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 338 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 338 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:20,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [338 Valid, 57 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:31:20,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-16 00:31:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 95. [2022-10-16 00:31:20,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 91 states have (on average 1.2857142857142858) internal successors, (117), 94 states have internal predecessors, (117), 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) [2022-10-16 00:31:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 117 transitions. [2022-10-16 00:31:20,817 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 117 transitions. Word has length 24 [2022-10-16 00:31:20,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:20,817 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 117 transitions. [2022-10-16 00:31:20,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.1) internal successors, (41), 9 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:20,818 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 117 transitions. [2022-10-16 00:31:20,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:31:20,818 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:20,819 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:20,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:21,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:21,033 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:21,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:21,035 INFO L85 PathProgramCache]: Analyzing trace with hash 952498338, now seen corresponding path program 1 times [2022-10-16 00:31:21,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:21,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503755679] [2022-10-16 00:31:21,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:21,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:21,057 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:21,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1373989161] [2022-10-16 00:31:21,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:21,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:21,059 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:21,061 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) [2022-10-16 00:31:21,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-16 00:31:21,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:21,131 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-16 00:31:21,134 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:21,162 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2022-10-16 00:31:21,190 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 7 [2022-10-16 00:31:21,200 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:31:21,200 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:21,254 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 27 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-10-16 00:31:21,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503755679] [2022-10-16 00:31:21,255 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:21,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1373989161] [2022-10-16 00:31:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1373989161] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:21,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:21,256 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-10-16 00:31:21,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948650294] [2022-10-16 00:31:21,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:31:21,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:31:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:31:21,258 INFO L87 Difference]: Start difference. First operand 95 states and 117 transitions. Second operand has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-10-16 00:31:21,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:21,552 INFO L93 Difference]: Finished difference Result 106 states and 122 transitions. [2022-10-16 00:31:21,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:31:21,552 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 00:31:21,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:21,554 INFO L225 Difference]: With dead ends: 106 [2022-10-16 00:31:21,554 INFO L226 Difference]: Without dead ends: 106 [2022-10-16 00:31:21,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=98, Invalid=208, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:31:21,556 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 85 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:21,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 126 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-16 00:31:21,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-10-16 00:31:21,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 97. [2022-10-16 00:31:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 93 states have (on average 1.2580645161290323) internal successors, (117), 96 states have internal predecessors, (117), 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) [2022-10-16 00:31:21,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 117 transitions. [2022-10-16 00:31:21,566 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 117 transitions. Word has length 30 [2022-10-16 00:31:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:21,567 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 117 transitions. [2022-10-16 00:31:21,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.4) internal successors, (34), 10 states have internal predecessors, (34), 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) [2022-10-16 00:31:21,567 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 117 transitions. [2022-10-16 00:31:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-16 00:31:21,568 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:21,568 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1] [2022-10-16 00:31:21,620 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:21,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:21,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:21,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -461537444, now seen corresponding path program 2 times [2022-10-16 00:31:21,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:21,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341303743] [2022-10-16 00:31:21,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:21,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:21,807 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:21,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [14032415] [2022-10-16 00:31:21,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:21,808 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:21,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:21,810 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) [2022-10-16 00:31:21,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-16 00:31:21,921 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:21,921 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:21,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 00:31:21,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:21,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:22,229 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:22,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:22,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:22,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341303743] [2022-10-16 00:31:22,537 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:22,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14032415] [2022-10-16 00:31:22,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14032415] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:22,537 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:22,537 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 14 [2022-10-16 00:31:22,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360121697] [2022-10-16 00:31:22,538 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:22,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-10-16 00:31:22,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:22,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-10-16 00:31:22,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-10-16 00:31:22,540 INFO L87 Difference]: Start difference. First operand 97 states and 117 transitions. Second operand has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2022-10-16 00:31:23,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:23,326 INFO L93 Difference]: Finished difference Result 177 states and 207 transitions. [2022-10-16 00:31:23,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-16 00:31:23,328 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-16 00:31:23,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:23,331 INFO L225 Difference]: With dead ends: 177 [2022-10-16 00:31:23,332 INFO L226 Difference]: Without dead ends: 177 [2022-10-16 00:31:23,332 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=222, Invalid=480, Unknown=0, NotChecked=0, Total=702 [2022-10-16 00:31:23,333 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 957 mSDsluCounter, 188 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 957 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:23,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [957 Valid, 229 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-16 00:31:23,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-10-16 00:31:23,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 151. [2022-10-16 00:31:23,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 147 states have (on average 1.2925170068027212) internal successors, (190), 150 states have internal predecessors, (190), 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) [2022-10-16 00:31:23,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 190 transitions. [2022-10-16 00:31:23,346 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 190 transitions. Word has length 30 [2022-10-16 00:31:23,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:23,347 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 190 transitions. [2022-10-16 00:31:23,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 4.0) internal successors, (60), 15 states have internal predecessors, (60), 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) [2022-10-16 00:31:23,347 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 190 transitions. [2022-10-16 00:31:23,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-10-16 00:31:23,349 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:23,349 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:23,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:23,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-10-16 00:31:23,565 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:23,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:23,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1297939658, now seen corresponding path program 2 times [2022-10-16 00:31:23,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:23,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195108017] [2022-10-16 00:31:23,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:23,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:23,587 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:23,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [629439329] [2022-10-16 00:31:23,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:23,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:23,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:23,590 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) [2022-10-16 00:31:23,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-16 00:31:23,726 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-16 00:31:23,727 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:23,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-16 00:31:23,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:24,077 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-16 00:31:24,078 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 00:31:24,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195108017] [2022-10-16 00:31:24,078 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:24,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629439329] [2022-10-16 00:31:24,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629439329] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 00:31:24,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 00:31:24,079 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 00:31:24,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535006897] [2022-10-16 00:31:24,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 00:31:24,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 00:31:24,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:24,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 00:31:24,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 00:31:24,081 INFO L87 Difference]: Start difference. First operand 151 states and 190 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-10-16 00:31:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:24,201 INFO L93 Difference]: Finished difference Result 298 states and 361 transitions. [2022-10-16 00:31:24,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-16 00:31:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-10-16 00:31:24,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:24,204 INFO L225 Difference]: With dead ends: 298 [2022-10-16 00:31:24,205 INFO L226 Difference]: Without dead ends: 298 [2022-10-16 00:31:24,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-10-16 00:31:24,206 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 86 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:24,207 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 84 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:31:24,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-10-16 00:31:24,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 282. [2022-10-16 00:31:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 278 states have (on average 1.2553956834532374) internal successors, (349), 281 states have internal predecessors, (349), 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) [2022-10-16 00:31:24,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 349 transitions. [2022-10-16 00:31:24,221 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 349 transitions. Word has length 48 [2022-10-16 00:31:24,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:24,221 INFO L495 AbstractCegarLoop]: Abstraction has 282 states and 349 transitions. [2022-10-16 00:31:24,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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) [2022-10-16 00:31:24,222 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 349 transitions. [2022-10-16 00:31:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-10-16 00:31:24,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:24,224 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:24,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:24,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:24,438 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:24,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:24,440 INFO L85 PathProgramCache]: Analyzing trace with hash 794730726, now seen corresponding path program 1 times [2022-10-16 00:31:24,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:24,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766638427] [2022-10-16 00:31:24,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:24,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:24,465 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:24,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [974881896] [2022-10-16 00:31:24,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:24,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:24,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:24,467 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) [2022-10-16 00:31:24,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-16 00:31:24,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:24,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 9 conjunts are in the unsatisfiable core [2022-10-16 00:31:24,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:24,773 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:24,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:24,944 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:24,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:24,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766638427] [2022-10-16 00:31:24,945 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:24,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [974881896] [2022-10-16 00:31:24,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [974881896] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:24,945 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:24,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2022-10-16 00:31:24,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256298621] [2022-10-16 00:31:24,946 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:24,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-10-16 00:31:24,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:24,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-10-16 00:31:24,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=167, Unknown=0, NotChecked=0, Total=306 [2022-10-16 00:31:24,948 INFO L87 Difference]: Start difference. First operand 282 states and 349 transitions. Second operand has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:25,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:25,467 INFO L93 Difference]: Finished difference Result 418 states and 485 transitions. [2022-10-16 00:31:25,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-16 00:31:25,468 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 55 [2022-10-16 00:31:25,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:25,471 INFO L225 Difference]: With dead ends: 418 [2022-10-16 00:31:25,471 INFO L226 Difference]: Without dead ends: 418 [2022-10-16 00:31:25,471 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 92 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=265, Invalid=335, Unknown=0, NotChecked=0, Total=600 [2022-10-16 00:31:25,472 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 890 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:25,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 125 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-16 00:31:25,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-10-16 00:31:25,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 388. [2022-10-16 00:31:25,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 384 states have (on average 1.2317708333333333) internal successors, (473), 387 states have internal predecessors, (473), 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) [2022-10-16 00:31:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 473 transitions. [2022-10-16 00:31:25,486 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 473 transitions. Word has length 55 [2022-10-16 00:31:25,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:25,486 INFO L495 AbstractCegarLoop]: Abstraction has 388 states and 473 transitions. [2022-10-16 00:31:25,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.111111111111111) internal successors, (92), 17 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 00:31:25,487 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 473 transitions. [2022-10-16 00:31:25,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-10-16 00:31:25,489 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:25,489 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 6, 4, 1, 1, 1, 1, 1] [2022-10-16 00:31:25,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:25,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-10-16 00:31:25,704 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:25,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:25,704 INFO L85 PathProgramCache]: Analyzing trace with hash -523171898, now seen corresponding path program 2 times [2022-10-16 00:31:25,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:25,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884565088] [2022-10-16 00:31:25,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:25,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:25,728 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:25,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1173443703] [2022-10-16 00:31:25,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:25,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:25,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:25,730 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) [2022-10-16 00:31:25,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-16 00:31:25,844 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:25,844 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:25,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 28 conjunts are in the unsatisfiable core [2022-10-16 00:31:25,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:25,870 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:26,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:27,136 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 290 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 00:31:27,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884565088] [2022-10-16 00:31:27,142 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:27,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173443703] [2022-10-16 00:31:27,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173443703] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:27,143 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:27,143 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 26 [2022-10-16 00:31:27,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507123222] [2022-10-16 00:31:27,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:27,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-16 00:31:27,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:27,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-16 00:31:27,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=558, Unknown=0, NotChecked=0, Total=756 [2022-10-16 00:31:27,148 INFO L87 Difference]: Start difference. First operand 388 states and 473 transitions. Second operand has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 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) [2022-10-16 00:31:29,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:29,872 INFO L93 Difference]: Finished difference Result 668 states and 797 transitions. [2022-10-16 00:31:29,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-10-16 00:31:29,873 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2022-10-16 00:31:29,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:29,879 INFO L225 Difference]: With dead ends: 668 [2022-10-16 00:31:29,879 INFO L226 Difference]: Without dead ends: 668 [2022-10-16 00:31:29,880 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=732, Invalid=1818, Unknown=0, NotChecked=0, Total=2550 [2022-10-16 00:31:29,881 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 3013 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 1012 SdHoareTripleChecker+Invalid, 1752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:29,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 1012 Invalid, 1752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-16 00:31:29,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 668 states. [2022-10-16 00:31:29,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 668 to 612. [2022-10-16 00:31:29,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 608 states have (on average 1.2516447368421053) internal successors, (761), 611 states have internal predecessors, (761), 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) [2022-10-16 00:31:29,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 761 transitions. [2022-10-16 00:31:29,902 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 761 transitions. Word has length 66 [2022-10-16 00:31:29,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:29,903 INFO L495 AbstractCegarLoop]: Abstraction has 612 states and 761 transitions. [2022-10-16 00:31:29,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.888888888888889) internal successors, (132), 27 states have internal predecessors, (132), 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) [2022-10-16 00:31:29,903 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 761 transitions. [2022-10-16 00:31:29,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-10-16 00:31:29,906 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:29,906 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 10, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:29,945 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:30,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-10-16 00:31:30,120 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:30,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:30,122 INFO L85 PathProgramCache]: Analyzing trace with hash 17067694, now seen corresponding path program 2 times [2022-10-16 00:31:30,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:30,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579868760] [2022-10-16 00:31:30,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:30,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:30,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:30,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1943993071] [2022-10-16 00:31:30,163 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:30,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:30,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:30,165 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) [2022-10-16 00:31:30,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-10-16 00:31:30,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:30,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:30,335 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 17 conjunts are in the unsatisfiable core [2022-10-16 00:31:30,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:30,843 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:30,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:31,400 INFO L134 CoverageAnalysis]: Checked inductivity of 565 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:31,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579868760] [2022-10-16 00:31:31,401 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:31,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943993071] [2022-10-16 00:31:31,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943993071] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:31,401 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:31,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 33 [2022-10-16 00:31:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693165265] [2022-10-16 00:31:31,401 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:31,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-10-16 00:31:31,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:31,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-10-16 00:31:31,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=531, Invalid=591, Unknown=0, NotChecked=0, Total=1122 [2022-10-16 00:31:31,405 INFO L87 Difference]: Start difference. First operand 612 states and 761 transitions. Second operand has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 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) [2022-10-16 00:31:32,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:32,966 INFO L93 Difference]: Finished difference Result 898 states and 1045 transitions. [2022-10-16 00:31:32,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-10-16 00:31:32,969 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2022-10-16 00:31:32,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:32,976 INFO L225 Difference]: With dead ends: 898 [2022-10-16 00:31:32,976 INFO L226 Difference]: Without dead ends: 898 [2022-10-16 00:31:32,978 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1041, Invalid=1311, Unknown=0, NotChecked=0, Total=2352 [2022-10-16 00:31:32,979 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 2051 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 241 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2051 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 241 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:32,979 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2051 Valid, 259 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [241 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-10-16 00:31:32,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 898 states. [2022-10-16 00:31:33,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 898 to 828. [2022-10-16 00:31:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 824 states have (on average 1.2342233009708738) internal successors, (1017), 827 states have internal predecessors, (1017), 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) [2022-10-16 00:31:33,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1017 transitions. [2022-10-16 00:31:33,016 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1017 transitions. Word has length 103 [2022-10-16 00:31:33,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:33,017 INFO L495 AbstractCegarLoop]: Abstraction has 828 states and 1017 transitions. [2022-10-16 00:31:33,018 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 5.529411764705882) internal successors, (188), 33 states have internal predecessors, (188), 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) [2022-10-16 00:31:33,018 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1017 transitions. [2022-10-16 00:31:33,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 00:31:33,028 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:33,029 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 18, 4, 1, 1, 1, 1, 1] [2022-10-16 00:31:33,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:33,232 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-10-16 00:31:33,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:33,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:33,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1517769114, now seen corresponding path program 3 times [2022-10-16 00:31:33,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:33,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390798135] [2022-10-16 00:31:33,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:33,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:33,281 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:33,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1091062234] [2022-10-16 00:31:33,282 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:31:33,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:33,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:33,283 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) [2022-10-16 00:31:33,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-10-16 00:31:33,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:31:33,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:33,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:31:33,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:33,583 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-10-16 00:31:33,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 9 [2022-10-16 00:31:33,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 107 proven. 21 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:33,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:33,827 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 65 proven. 63 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:33,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:33,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390798135] [2022-10-16 00:31:33,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:33,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091062234] [2022-10-16 00:31:33,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091062234] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:33,829 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:33,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-16 00:31:33,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573422940] [2022-10-16 00:31:33,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:33,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 00:31:33,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:33,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 00:31:33,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-10-16 00:31:33,831 INFO L87 Difference]: Start difference. First operand 828 states and 1017 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-10-16 00:31:33,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:33,899 INFO L93 Difference]: Finished difference Result 873 states and 1051 transitions. [2022-10-16 00:31:33,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-16 00:31:33,900 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-10-16 00:31:33,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:33,905 INFO L225 Difference]: With dead ends: 873 [2022-10-16 00:31:33,905 INFO L226 Difference]: Without dead ends: 873 [2022-10-16 00:31:33,905 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 268 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-16 00:31:33,906 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 20 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:33,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 53 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 00:31:33,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-10-16 00:31:33,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 858. [2022-10-16 00:31:33,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 854 states have (on average 1.2131147540983607) internal successors, (1036), 857 states have internal predecessors, (1036), 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) [2022-10-16 00:31:33,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1036 transitions. [2022-10-16 00:31:33,934 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1036 transitions. Word has length 138 [2022-10-16 00:31:33,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:33,935 INFO L495 AbstractCegarLoop]: Abstraction has 858 states and 1036 transitions. [2022-10-16 00:31:33,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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) [2022-10-16 00:31:33,935 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1036 transitions. [2022-10-16 00:31:33,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-10-16 00:31:33,937 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:33,937 INFO L195 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1] [2022-10-16 00:31:33,972 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:34,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-10-16 00:31:34,151 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:34,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:34,152 INFO L85 PathProgramCache]: Analyzing trace with hash 101698678, now seen corresponding path program 3 times [2022-10-16 00:31:34,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:34,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201798094] [2022-10-16 00:31:34,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:34,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:34,189 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:34,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2074350699] [2022-10-16 00:31:34,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:31:34,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:34,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:34,191 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) [2022-10-16 00:31:34,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-10-16 00:31:34,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:31:34,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:34,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-16 00:31:34,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:34,314 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-16 00:31:34,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 106 proven. 22 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:34,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:36,014 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 1302 trivial. 0 not checked. [2022-10-16 00:31:36,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:36,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201798094] [2022-10-16 00:31:36,015 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:36,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2074350699] [2022-10-16 00:31:36,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2074350699] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:36,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:36,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2022-10-16 00:31:36,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150068053] [2022-10-16 00:31:36,016 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:36,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-16 00:31:36,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:36,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-16 00:31:36,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-10-16 00:31:36,018 INFO L87 Difference]: Start difference. First operand 858 states and 1036 transitions. Second operand has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-10-16 00:31:36,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:36,145 INFO L93 Difference]: Finished difference Result 856 states and 1004 transitions. [2022-10-16 00:31:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 00:31:36,146 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2022-10-16 00:31:36,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:36,152 INFO L225 Difference]: With dead ends: 856 [2022-10-16 00:31:36,152 INFO L226 Difference]: Without dead ends: 856 [2022-10-16 00:31:36,153 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:31:36,153 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 79 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:36,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 37 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 00:31:36,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-10-16 00:31:36,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 856. [2022-10-16 00:31:36,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 856 states, 854 states have (on average 1.1756440281030445) internal successors, (1004), 855 states have internal predecessors, (1004), 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) [2022-10-16 00:31:36,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 856 states to 856 states and 1004 transitions. [2022-10-16 00:31:36,176 INFO L78 Accepts]: Start accepts. Automaton has 856 states and 1004 transitions. Word has length 138 [2022-10-16 00:31:36,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:36,176 INFO L495 AbstractCegarLoop]: Abstraction has 856 states and 1004 transitions. [2022-10-16 00:31:36,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 10 states have internal predecessors, (33), 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) [2022-10-16 00:31:36,177 INFO L276 IsEmpty]: Start isEmpty. Operand 856 states and 1004 transitions. [2022-10-16 00:31:36,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-10-16 00:31:36,179 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:36,180 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:36,214 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:36,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:36,394 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:36,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:36,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1917223666, now seen corresponding path program 1 times [2022-10-16 00:31:36,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:36,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1732879111] [2022-10-16 00:31:36,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:36,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:36,472 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:36,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1830656854] [2022-10-16 00:31:36,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:36,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:36,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:36,474 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) [2022-10-16 00:31:36,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-10-16 00:31:36,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:31:36,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 665 conjuncts, 33 conjunts are in the unsatisfiable core [2022-10-16 00:31:36,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:37,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:37,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:31:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2645 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:31:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1732879111] [2022-10-16 00:31:40,332 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:31:40,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830656854] [2022-10-16 00:31:40,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830656854] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:31:40,333 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:31:40,333 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 65 [2022-10-16 00:31:40,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018012168] [2022-10-16 00:31:40,334 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:31:40,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2022-10-16 00:31:40,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:31:40,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2022-10-16 00:31:40,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2083, Invalid=2207, Unknown=0, NotChecked=0, Total=4290 [2022-10-16 00:31:40,342 INFO L87 Difference]: Start difference. First operand 856 states and 1004 transitions. Second operand has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 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) [2022-10-16 00:31:47,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:31:47,154 INFO L93 Difference]: Finished difference Result 1888 states and 2136 transitions. [2022-10-16 00:31:47,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-10-16 00:31:47,155 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 199 [2022-10-16 00:31:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:31:47,167 INFO L225 Difference]: With dead ends: 1888 [2022-10-16 00:31:47,167 INFO L226 Difference]: Without dead ends: 1888 [2022-10-16 00:31:47,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1953 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=4129, Invalid=5183, Unknown=0, NotChecked=0, Total=9312 [2022-10-16 00:31:47,171 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 3529 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 470 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3529 SdHoareTripleChecker+Valid, 494 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 470 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-10-16 00:31:47,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3529 Valid, 494 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [470 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-10-16 00:31:47,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1888 states. [2022-10-16 00:31:47,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1888 to 1768. [2022-10-16 00:31:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1768 states, 1766 states have (on average 1.175537938844847) internal successors, (2076), 1767 states have internal predecessors, (2076), 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) [2022-10-16 00:31:47,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1768 states to 1768 states and 2076 transitions. [2022-10-16 00:31:47,226 INFO L78 Accepts]: Start accepts. Automaton has 1768 states and 2076 transitions. Word has length 199 [2022-10-16 00:31:47,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:31:47,227 INFO L495 AbstractCegarLoop]: Abstraction has 1768 states and 2076 transitions. [2022-10-16 00:31:47,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 5.757575757575758) internal successors, (380), 65 states have internal predecessors, (380), 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) [2022-10-16 00:31:47,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1768 states and 2076 transitions. [2022-10-16 00:31:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2022-10-16 00:31:47,235 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:31:47,235 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:31:47,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-10-16 00:31:47,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-10-16 00:31:47,451 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:31:47,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:31:47,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1568772690, now seen corresponding path program 2 times [2022-10-16 00:31:47,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:31:47,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255741571] [2022-10-16 00:31:47,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:31:47,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:31:47,523 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:31:47,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1696624703] [2022-10-16 00:31:47,523 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-16 00:31:47,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:31:47,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:31:47,525 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) [2022-10-16 00:31:47,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-10-16 00:31:47,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-16 00:31:47,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:31:47,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1273 conjuncts, 65 conjunts are in the unsatisfiable core [2022-10-16 00:31:47,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:31:51,769 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:31:51,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:32:11,868 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:32:11,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:32:11,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255741571] [2022-10-16 00:32:11,869 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:32:11,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1696624703] [2022-10-16 00:32:11,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1696624703] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:32:11,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:32:11,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65] total 129 [2022-10-16 00:32:11,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481325457] [2022-10-16 00:32:11,870 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:32:11,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 130 states [2022-10-16 00:32:11,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:32:11,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 130 interpolants. [2022-10-16 00:32:11,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8259, Invalid=8511, Unknown=0, NotChecked=0, Total=16770 [2022-10-16 00:32:11,886 INFO L87 Difference]: Start difference. First operand 1768 states and 2076 transitions. Second operand has 130 states, 130 states have (on average 5.876923076923077) internal successors, (764), 129 states have internal predecessors, (764), 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) [2022-10-16 00:33:28,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:33:28,647 INFO L93 Difference]: Finished difference Result 3840 states and 4344 transitions. [2022-10-16 00:33:28,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 129 states. [2022-10-16 00:33:28,652 INFO L78 Accepts]: Start accepts. Automaton has has 130 states, 130 states have (on average 5.876923076923077) internal successors, (764), 129 states have internal predecessors, (764), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 391 [2022-10-16 00:33:28,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:33:28,674 INFO L225 Difference]: With dead ends: 3840 [2022-10-16 00:33:28,674 INFO L226 Difference]: Without dead ends: 3840 [2022-10-16 00:33:28,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 843 GetRequests, 652 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8001 ImplicationChecksByTransitivity, 75.6s TimeCoverageRelationStatistics Valid=16449, Invalid=20607, Unknown=0, NotChecked=0, Total=37056 [2022-10-16 00:33:28,687 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 8044 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1293 mSolverCounterSat, 973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8044 SdHoareTripleChecker+Valid, 969 SdHoareTripleChecker+Invalid, 2266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 973 IncrementalHoareTripleChecker+Valid, 1293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:33:28,688 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8044 Valid, 969 Invalid, 2266 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [973 Valid, 1293 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2022-10-16 00:33:28,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3840 states. [2022-10-16 00:33:28,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3840 to 3592. [2022-10-16 00:33:28,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3592 states, 3590 states have (on average 1.1754874651810585) internal successors, (4220), 3591 states have internal predecessors, (4220), 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) [2022-10-16 00:33:28,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3592 states to 3592 states and 4220 transitions. [2022-10-16 00:33:28,799 INFO L78 Accepts]: Start accepts. Automaton has 3592 states and 4220 transitions. Word has length 391 [2022-10-16 00:33:28,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:33:28,801 INFO L495 AbstractCegarLoop]: Abstraction has 3592 states and 4220 transitions. [2022-10-16 00:33:28,802 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 130 states, 130 states have (on average 5.876923076923077) internal successors, (764), 129 states have internal predecessors, (764), 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) [2022-10-16 00:33:28,802 INFO L276 IsEmpty]: Start isEmpty. Operand 3592 states and 4220 transitions. [2022-10-16 00:33:28,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 776 [2022-10-16 00:33:28,827 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:33:28,828 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 126, 126, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:33:28,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-10-16 00:33:29,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-10-16 00:33:29,042 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:33:29,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:33:29,044 INFO L85 PathProgramCache]: Analyzing trace with hash -1435193070, now seen corresponding path program 3 times [2022-10-16 00:33:29,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:33:29,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108244748] [2022-10-16 00:33:29,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:33:29,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:33:29,163 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:33:29,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [522339745] [2022-10-16 00:33:29,164 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-16 00:33:29,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:33:29,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:33:29,166 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) [2022-10-16 00:33:29,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-10-16 00:33:29,489 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-16 00:33:29,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-16 00:33:29,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-16 00:33:29,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:33:39,828 WARN L233 SmtUtils]: Spent 10.22s on a formula simplification that was a NOOP. DAG size: 29 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 00:34:08,240 INFO L134 CoverageAnalysis]: Checked inductivity of 47381 backedges. 0 proven. 501 refuted. 0 times theorem prover too weak. 46880 trivial. 0 not checked. [2022-10-16 00:34:08,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 00:34:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 47381 backedges. 0 proven. 501 refuted. 0 times theorem prover too weak. 46880 trivial. 0 not checked. [2022-10-16 00:34:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 00:34:28,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108244748] [2022-10-16 00:34:28,275 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-10-16 00:34:28,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522339745] [2022-10-16 00:34:28,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522339745] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 00:34:28,275 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-16 00:34:28,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 11 [2022-10-16 00:34:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1421469621] [2022-10-16 00:34:28,276 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-16 00:34:28,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-16 00:34:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 00:34:28,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-16 00:34:28,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-10-16 00:34:28,279 INFO L87 Difference]: Start difference. First operand 3592 states and 4220 transitions. Second operand has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-10-16 00:34:36,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 00:34:36,547 INFO L93 Difference]: Finished difference Result 3966 states and 4656 transitions. [2022-10-16 00:34:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 00:34:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 775 [2022-10-16 00:34:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 00:34:36,573 INFO L225 Difference]: With dead ends: 3966 [2022-10-16 00:34:36,573 INFO L226 Difference]: Without dead ends: 3966 [2022-10-16 00:34:36,573 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1551 GetRequests, 1539 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 27.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-10-16 00:34:36,574 INFO L413 NwaCegarLoop]: 21 mSDtfsCounter, 12 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 00:34:36,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 85 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 20 Unchecked, 0.1s Time] [2022-10-16 00:34:36,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3966 states. [2022-10-16 00:34:36,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3966 to 3962. [2022-10-16 00:34:36,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3960 states have (on average 1.1747474747474747) internal successors, (4652), 3961 states have internal predecessors, (4652), 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) [2022-10-16 00:34:36,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 4652 transitions. [2022-10-16 00:34:36,666 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 4652 transitions. Word has length 775 [2022-10-16 00:34:36,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 00:34:36,668 INFO L495 AbstractCegarLoop]: Abstraction has 3962 states and 4652 transitions. [2022-10-16 00:34:36,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.3333333333333335) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-10-16 00:34:36,668 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 4652 transitions. [2022-10-16 00:34:36,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 777 [2022-10-16 00:34:36,702 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 00:34:36,702 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 125, 125, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 00:34:36,756 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-10-16 00:34:36,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-10-16 00:34:36,917 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 7 more)] === [2022-10-16 00:34:36,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 00:34:36,918 INFO L85 PathProgramCache]: Analyzing trace with hash -88042697, now seen corresponding path program 1 times [2022-10-16 00:34:36,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 00:34:36,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051073307] [2022-10-16 00:34:36,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:34:36,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 00:34:37,033 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-10-16 00:34:37,033 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1867533490] [2022-10-16 00:34:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 00:34:37,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 00:34:37,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 00:34:37,035 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) [2022-10-16 00:34:37,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-10-16 00:34:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 00:34:37,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 2501 conjuncts, 129 conjunts are in the unsatisfiable core [2022-10-16 00:34:37,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 00:34:53,037 INFO L134 CoverageAnalysis]: Checked inductivity of 47381 backedges. 0 proven. 47376 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-16 00:34:53,038 INFO L328 TraceCheckSpWp]: Computing backward predicates...