/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-examples/standard_partial_init_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-15 18:13:05,715 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-15 18:13:05,718 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-15 18:13:05,759 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-15 18:13:05,817 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-15 18:13:05,819 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-15 18:13:05,820 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-15 18:13:05,821 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 [2022-10-15 18:13:05,863 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-15 18:13:05,863 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-15 18:13:05,866 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-15 18:13:05,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-15 18:13:05,869 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-15 18:13:05,870 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-15 18:13:05,871 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-15 18:13:05,872 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-15 18:13:05,872 INFO L138 SettingsManager]: * Use SBE=true [2022-10-15 18:13:05,872 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-15 18:13:05,874 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-15 18:13:05,874 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-15 18:13:05,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-15 18:13:05,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-15 18:13:05,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-15 18:13:05,875 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-15 18:13:05,875 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-15 18:13:05,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-15 18:13:05,876 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-15 18:13:05,876 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-15 18:13:05,876 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-15 18:13:05,877 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-15 18:13:05,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-15 18:13:05,878 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-15 18:13:05,878 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-15 18:13:05,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:13:05,879 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-15 18:13:05,879 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-15 18:13:05,879 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-15 18:13:05,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-15 18:13:05,880 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-15 18:13:06,327 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-15 18:13:06,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-15 18:13:06,358 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-15 18:13:06,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-15 18:13:06,360 INFO L275 PluginConnector]: CDTParser initialized [2022-10-15 18:13:06,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2022-10-15 18:13:06,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5280108/541d9f752d31415e971c06629464d8ff/FLAGb8f7a996b [2022-10-15 18:13:07,082 INFO L306 CDTParser]: Found 1 translation units. [2022-10-15 18:13:07,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2022-10-15 18:13:07,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5280108/541d9f752d31415e971c06629464d8ff/FLAGb8f7a996b [2022-10-15 18:13:07,449 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ae5280108/541d9f752d31415e971c06629464d8ff [2022-10-15 18:13:07,452 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-15 18:13:07,458 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-15 18:13:07,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-15 18:13:07,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-15 18:13:07,467 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-15 18:13:07,468 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22c4f162 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07, skipping insertion in model container [2022-10-15 18:13:07,470 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,478 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-15 18:13:07,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-15 18:13:07,640 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-examples/standard_partial_init_ground.i[821,834] [2022-10-15 18:13:07,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:13:07,672 INFO L203 MainTranslator]: Completed pre-run [2022-10-15 18:13:07,687 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-examples/standard_partial_init_ground.i[821,834] [2022-10-15 18:13:07,696 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-15 18:13:07,713 INFO L208 MainTranslator]: Completed translation [2022-10-15 18:13:07,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07 WrapperNode [2022-10-15 18:13:07,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-15 18:13:07,715 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-15 18:13:07,715 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-15 18:13:07,716 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-15 18:13:07,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,759 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 82 [2022-10-15 18:13:07,759 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-15 18:13:07,760 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-15 18:13:07,760 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-15 18:13:07,761 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-15 18:13:07,772 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,772 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,781 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,789 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,796 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,802 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-15 18:13:07,803 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-15 18:13:07,803 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-15 18:13:07,803 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-15 18:13:07,804 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (1/1) ... [2022-10-15 18:13:07,812 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-15 18:13:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:07,847 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) [2022-10-15 18:13:07,876 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 [2022-10-15 18:13:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-15 18:13:07,929 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-15 18:13:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-15 18:13:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-15 18:13:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-15 18:13:07,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-15 18:13:07,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-15 18:13:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-10-15 18:13:07,931 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-10-15 18:13:07,931 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-15 18:13:08,024 INFO L235 CfgBuilder]: Building ICFG [2022-10-15 18:13:08,028 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-15 18:13:08,296 INFO L276 CfgBuilder]: Performing block encoding [2022-10-15 18:13:08,318 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-15 18:13:08,318 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-15 18:13:08,323 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:13:08 BoogieIcfgContainer [2022-10-15 18:13:08,324 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-15 18:13:08,330 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-15 18:13:08,330 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-15 18:13:08,339 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-15 18:13:08,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 06:13:07" (1/3) ... [2022-10-15 18:13:08,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373e703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:13:08, skipping insertion in model container [2022-10-15 18:13:08,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 06:13:07" (2/3) ... [2022-10-15 18:13:08,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6373e703 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 06:13:08, skipping insertion in model container [2022-10-15 18:13:08,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 06:13:08" (3/3) ... [2022-10-15 18:13:08,348 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2022-10-15 18:13:08,372 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-15 18:13:08,373 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2022-10-15 18:13:08,465 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-15 18:13:08,474 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;@de58f52, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-15 18:13:08,475 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2022-10-15 18:13:08,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 53 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 49 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:08,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:13:08,488 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:08,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:13:08,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:08,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:08,497 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2022-10-15 18:13:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841276971] [2022-10-15 18:13:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:08,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:09,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:09,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:09,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841276971] [2022-10-15 18:13:09,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841276971] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:09,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:09,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:09,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668816336] [2022-10-15 18:13:09,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:09,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:09,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:09,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:09,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,061 INFO L87 Difference]: Start difference. First operand has 53 states, 33 states have (on average 1.7878787878787878) internal successors, (59), 49 states have internal predecessors, (59), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-15 18:13:09,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:09,147 INFO L93 Difference]: Finished difference Result 51 states and 56 transitions. [2022-10-15 18:13:09,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:09,151 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-15 18:13:09,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:09,161 INFO L225 Difference]: With dead ends: 51 [2022-10-15 18:13:09,161 INFO L226 Difference]: Without dead ends: 49 [2022-10-15 18:13:09,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,174 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 40 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:09,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:09,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-15 18:13:09,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-15 18:13:09,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.5625) internal successors, (50), 45 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:09,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-10-15 18:13:09,239 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 4 [2022-10-15 18:13:09,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:09,239 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-10-15 18:13:09,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-15 18:13:09,241 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-10-15 18:13:09,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-15 18:13:09,242 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:09,242 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-15 18:13:09,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-15 18:13:09,244 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:09,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:09,245 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2022-10-15 18:13:09,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:09,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117130750] [2022-10-15 18:13:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:09,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:09,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:09,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:09,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:09,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117130750] [2022-10-15 18:13:09,548 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117130750] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:09,548 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:09,549 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:09,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580812008] [2022-10-15 18:13:09,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:09,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:09,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:09,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:09,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,554 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-15 18:13:09,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:09,623 INFO L93 Difference]: Finished difference Result 57 states and 62 transitions. [2022-10-15 18:13:09,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:09,624 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 4 [2022-10-15 18:13:09,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:09,626 INFO L225 Difference]: With dead ends: 57 [2022-10-15 18:13:09,626 INFO L226 Difference]: Without dead ends: 57 [2022-10-15 18:13:09,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,628 INFO L413 NwaCegarLoop]: 49 mSDtfsCounter, 6 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:09,629 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 78 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:09,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-10-15 18:13:09,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-10-15 18:13:09,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 34 states have (on average 1.5294117647058822) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:09,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-10-15 18:13:09,639 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 4 [2022-10-15 18:13:09,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:09,640 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-10-15 18:13:09,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) [2022-10-15 18:13:09,641 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-10-15 18:13:09,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:13:09,641 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:09,642 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:13:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-15 18:13:09,642 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:09,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash 889659654, now seen corresponding path program 1 times [2022-10-15 18:13:09,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:09,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178421967] [2022-10-15 18:13:09,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:09,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:09,753 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:09,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:09,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178421967] [2022-10-15 18:13:09,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178421967] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:09,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:09,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:09,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155410154] [2022-10-15 18:13:09,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:09,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:09,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:09,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,759 INFO L87 Difference]: Start difference. First operand 51 states and 56 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) [2022-10-15 18:13:09,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:09,810 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2022-10-15 18:13:09,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:09,811 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 [2022-10-15 18:13:09,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:09,814 INFO L225 Difference]: With dead ends: 49 [2022-10-15 18:13:09,814 INFO L226 Difference]: Without dead ends: 49 [2022-10-15 18:13:09,816 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:09,819 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 36 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:09,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 44 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:09,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-10-15 18:13:09,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-10-15 18:13:09,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 34 states have (on average 1.4705882352941178) internal successors, (50), 45 states have internal predecessors, (50), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:09,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2022-10-15 18:13:09,836 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 6 [2022-10-15 18:13:09,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:09,837 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2022-10-15 18:13:09,838 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) [2022-10-15 18:13:09,838 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2022-10-15 18:13:09,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-10-15 18:13:09,839 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:09,839 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-10-15 18:13:09,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-15 18:13:09,839 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:09,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:09,842 INFO L85 PathProgramCache]: Analyzing trace with hash 889659655, now seen corresponding path program 1 times [2022-10-15 18:13:09,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:09,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180475379] [2022-10-15 18:13:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:09,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:10,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:10,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:10,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180475379] [2022-10-15 18:13:10,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180475379] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:10,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:10,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:10,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593850599] [2022-10-15 18:13:10,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:10,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:10,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:10,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:10,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:10,096 INFO L87 Difference]: Start difference. First operand 49 states and 54 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) [2022-10-15 18:13:10,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:10,145 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2022-10-15 18:13:10,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:10,146 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 [2022-10-15 18:13:10,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:10,148 INFO L225 Difference]: With dead ends: 53 [2022-10-15 18:13:10,148 INFO L226 Difference]: Without dead ends: 53 [2022-10-15 18:13:10,148 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:10,150 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 2 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:10,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 75 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:10,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-10-15 18:13:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2022-10-15 18:13:10,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 36 states have (on average 1.4444444444444444) internal successors, (52), 47 states have internal predecessors, (52), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 56 transitions. [2022-10-15 18:13:10,162 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 56 transitions. Word has length 6 [2022-10-15 18:13:10,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:10,163 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 56 transitions. [2022-10-15 18:13:10,163 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) [2022-10-15 18:13:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 56 transitions. [2022-10-15 18:13:10,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-15 18:13:10,164 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:10,164 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:10,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-15 18:13:10,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash 719163786, now seen corresponding path program 1 times [2022-10-15 18:13:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220656065] [2022-10-15 18:13:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:10,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:10,522 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:10,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220656065] [2022-10-15 18:13:10,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220656065] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:10,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145582227] [2022-10-15 18:13:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:10,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:10,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:10,541 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) [2022-10-15 18:13:10,550 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-15 18:13:10,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:10,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-15 18:13:10,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:10,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:10,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:10,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:10,792 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-10-15 18:13:10,810 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 18:13:10,811 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-10-15 18:13:10,923 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:10,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:11,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145582227] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:11,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:11,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2022-10-15 18:13:11,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38082660] [2022-10-15 18:13:11,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:11,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:13:11,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:11,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:13:11,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:13:11,097 INFO L87 Difference]: Start difference. First operand 51 states and 56 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-10-15 18:13:11,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:11,274 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-10-15 18:13:11,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:13:11,275 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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 10 [2022-10-15 18:13:11,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:11,277 INFO L225 Difference]: With dead ends: 71 [2022-10-15 18:13:11,277 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 18:13:11,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:13:11,279 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 36 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:11,280 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 147 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:11,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 18:13:11,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 67. [2022-10-15 18:13:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 52 states have (on average 1.3846153846153846) internal successors, (72), 63 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:11,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2022-10-15 18:13:11,289 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 10 [2022-10-15 18:13:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:11,289 INFO L495 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2022-10-15 18:13:11,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 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) [2022-10-15 18:13:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2022-10-15 18:13:11,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-15 18:13:11,291 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:11,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:11,333 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:11,503 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:11,505 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:11,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:11,506 INFO L85 PathProgramCache]: Analyzing trace with hash -373337781, now seen corresponding path program 1 times [2022-10-15 18:13:11,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:11,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080206188] [2022-10-15 18:13:11,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:11,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:11,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:11,657 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:11,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080206188] [2022-10-15 18:13:11,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080206188] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:11,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1845946651] [2022-10-15 18:13:11,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:11,659 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:11,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:11,660 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) [2022-10-15 18:13:11,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-15 18:13:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:11,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-15 18:13:11,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:11,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:11,764 INFO L356 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-10-15 18:13:11,765 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-10-15 18:13:11,777 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 42 [2022-10-15 18:13:11,888 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:11,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:11,985 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:11,985 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1845946651] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:11,985 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:11,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-10-15 18:13:11,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694364413] [2022-10-15 18:13:11,986 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:11,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:13:11,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:11,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:13:11,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-15 18:13:11,988 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2022-10-15 18:13:12,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:12,103 INFO L93 Difference]: Finished difference Result 71 states and 78 transitions. [2022-10-15 18:13:12,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-15 18:13:12,104 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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 12 [2022-10-15 18:13:12,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:12,105 INFO L225 Difference]: With dead ends: 71 [2022-10-15 18:13:12,105 INFO L226 Difference]: Without dead ends: 71 [2022-10-15 18:13:12,105 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-10-15 18:13:12,107 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 19 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:12,107 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 126 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:12,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2022-10-15 18:13:12,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 69. [2022-10-15 18:13:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 65 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:12,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 76 transitions. [2022-10-15 18:13:12,115 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 76 transitions. Word has length 12 [2022-10-15 18:13:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:12,116 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 76 transitions. [2022-10-15 18:13:12,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2022-10-15 18:13:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 76 transitions. [2022-10-15 18:13:12,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-15 18:13:12,117 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:12,117 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:12,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:12,332 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,SelfDestructingSolverStorable5 [2022-10-15 18:13:12,333 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:12,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:12,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1824164062, now seen corresponding path program 1 times [2022-10-15 18:13:12,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:12,335 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103570539] [2022-10-15 18:13:12,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:12,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:12,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:12,441 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-15 18:13:12,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103570539] [2022-10-15 18:13:12,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103570539] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:12,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661803742] [2022-10-15 18:13:12,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:12,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:12,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:12,444 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) [2022-10-15 18:13:12,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-15 18:13:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:12,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-15 18:13:12,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:12,551 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:12,551 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:12,592 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:12,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661803742] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:12,593 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:12,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2022-10-15 18:13:12,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198992832] [2022-10-15 18:13:12,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:12,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-15 18:13:12,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:12,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-15 18:13:12,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2022-10-15 18:13:12,595 INFO L87 Difference]: Start difference. First operand 69 states and 76 transitions. Second operand has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-10-15 18:13:12,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:12,823 INFO L93 Difference]: Finished difference Result 135 states and 145 transitions. [2022-10-15 18:13:12,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-15 18:13:12,824 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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 18 [2022-10-15 18:13:12,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:12,826 INFO L225 Difference]: With dead ends: 135 [2022-10-15 18:13:12,826 INFO L226 Difference]: Without dead ends: 135 [2022-10-15 18:13:12,827 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-10-15 18:13:12,828 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 225 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:12,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [227 Valid, 147 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:13:12,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2022-10-15 18:13:12,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 114. [2022-10-15 18:13:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 99 states have (on average 1.4242424242424243) internal successors, (141), 110 states have internal predecessors, (141), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:12,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2022-10-15 18:13:12,851 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 18 [2022-10-15 18:13:12,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:12,854 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2022-10-15 18:13:12,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.454545454545454) internal successors, (49), 11 states have internal predecessors, (49), 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) [2022-10-15 18:13:12,854 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2022-10-15 18:13:12,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-15 18:13:12,855 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:12,855 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1] [2022-10-15 18:13:12,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:13,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:13,057 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:13,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:13,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1808870570, now seen corresponding path program 2 times [2022-10-15 18:13:13,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:13,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635315115] [2022-10-15 18:13:13,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:13,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:13,478 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:13,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:13,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635315115] [2022-10-15 18:13:13,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635315115] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:13,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1581835052] [2022-10-15 18:13:13,480 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:13,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:13,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:13,482 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) [2022-10-15 18:13:13,510 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-10-15 18:13:13,581 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:13:13,582 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:13,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 22 conjunts are in the unsatisfiable core [2022-10-15 18:13:13,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:13,607 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:13,608 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:13,609 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:13,611 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2022-10-15 18:13:13,621 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-10-15 18:13:13,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2022-10-15 18:13:13,873 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:13,873 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:13:13,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1581835052] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:13,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:13:13,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2022-10-15 18:13:13,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470577621] [2022-10-15 18:13:13,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:13,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-15 18:13:13,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:13,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-15 18:13:13,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-10-15 18:13:13,876 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:14,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:14,027 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2022-10-15 18:13:14,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-15 18:13:14,027 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-10-15 18:13:14,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:14,029 INFO L225 Difference]: With dead ends: 125 [2022-10-15 18:13:14,029 INFO L226 Difference]: Without dead ends: 125 [2022-10-15 18:13:14,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-10-15 18:13:14,030 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 127 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:14,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 115 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:14,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-10-15 18:13:14,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2022-10-15 18:13:14,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 99 states have (on average 1.3838383838383839) internal successors, (137), 109 states have internal predecessors, (137), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:14,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 141 transitions. [2022-10-15 18:13:14,040 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 141 transitions. Word has length 28 [2022-10-15 18:13:14,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:14,040 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 141 transitions. [2022-10-15 18:13:14,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.0) internal successors, (28), 8 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:14,041 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 141 transitions. [2022-10-15 18:13:14,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-10-15 18:13:14,042 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:14,042 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 1, 1, 1] [2022-10-15 18:13:14,086 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:14,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:14,257 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:14,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:14,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1137135639, now seen corresponding path program 2 times [2022-10-15 18:13:14,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:14,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142436903] [2022-10-15 18:13:14,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:14,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:14,544 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:14,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:14,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142436903] [2022-10-15 18:13:14,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142436903] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:14,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1712512519] [2022-10-15 18:13:14,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:14,545 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:14,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:14,547 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) [2022-10-15 18:13:14,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-10-15 18:13:14,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:13:14,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:14,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-15 18:13:14,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:14,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:14,701 INFO L356 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2022-10-15 18:13:14,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2022-10-15 18:13:14,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 44 treesize of output 42 [2022-10-15 18:13:14,986 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 18:13:14,987 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:15,459 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-10-15 18:13:15,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1712512519] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:15,459 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:15,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2022-10-15 18:13:15,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534535243] [2022-10-15 18:13:15,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:15,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-15 18:13:15,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:15,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-15 18:13:15,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2022-10-15 18:13:15,464 INFO L87 Difference]: Start difference. First operand 113 states and 141 transitions. Second operand has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:15,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:15,798 INFO L93 Difference]: Finished difference Result 112 states and 134 transitions. [2022-10-15 18:13:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-15 18:13:15,798 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-10-15 18:13:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:15,800 INFO L225 Difference]: With dead ends: 112 [2022-10-15 18:13:15,800 INFO L226 Difference]: Without dead ends: 112 [2022-10-15 18:13:15,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2022-10-15 18:13:15,801 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 94 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:15,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 251 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:13:15,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-15 18:13:15,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2022-10-15 18:13:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 99 states have (on average 1.303030303030303) internal successors, (129), 107 states have internal predecessors, (129), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 133 transitions. [2022-10-15 18:13:15,810 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 133 transitions. Word has length 30 [2022-10-15 18:13:15,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:15,810 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 133 transitions. [2022-10-15 18:13:15,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.333333333333333) internal successors, (52), 13 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 133 transitions. [2022-10-15 18:13:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 18:13:15,812 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:15,813 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:15,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:16,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:16,027 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:16,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:16,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1498862810, now seen corresponding path program 1 times [2022-10-15 18:13:16,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:16,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925972785] [2022-10-15 18:13:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:16,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-10-15 18:13:16,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:16,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925972785] [2022-10-15 18:13:16,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925972785] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:16,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-15 18:13:16,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-15 18:13:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984108469] [2022-10-15 18:13:16,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:16,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:16,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:16,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:16,163 INFO L87 Difference]: Start difference. First operand 111 states and 133 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-10-15 18:13:16,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:16,183 INFO L93 Difference]: Finished difference Result 108 states and 125 transitions. [2022-10-15 18:13:16,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:16,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 45 [2022-10-15 18:13:16,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:16,184 INFO L225 Difference]: With dead ends: 108 [2022-10-15 18:13:16,185 INFO L226 Difference]: Without dead ends: 108 [2022-10-15 18:13:16,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-15 18:13:16,186 INFO L413 NwaCegarLoop]: 35 mSDtfsCounter, 21 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:16,186 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 40 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:16,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-15 18:13:16,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-10-15 18:13:16,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 99 states have (on average 1.2222222222222223) internal successors, (121), 104 states have internal predecessors, (121), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:16,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 125 transitions. [2022-10-15 18:13:16,192 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 125 transitions. Word has length 45 [2022-10-15 18:13:16,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:16,193 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 125 transitions. [2022-10-15 18:13:16,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-10-15 18:13:16,193 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 125 transitions. [2022-10-15 18:13:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-10-15 18:13:16,194 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:16,195 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:16,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-10-15 18:13:16,195 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:16,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1498862811, now seen corresponding path program 1 times [2022-10-15 18:13:16,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:16,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226681259] [2022-10-15 18:13:16,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:16,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:16,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:16,345 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:16,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226681259] [2022-10-15 18:13:16,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226681259] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:16,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1680920421] [2022-10-15 18:13:16,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:16,347 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:16,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:16,348 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) [2022-10-15 18:13:16,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-10-15 18:13:16,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:16,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-15 18:13:16,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:16,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:16,622 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 96 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:16,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1680920421] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:16,622 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:16,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2022-10-15 18:13:16,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762907829] [2022-10-15 18:13:16,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:16,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-10-15 18:13:16,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:16,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-10-15 18:13:16,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:16,625 INFO L87 Difference]: Start difference. First operand 108 states and 125 transitions. Second operand has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2022-10-15 18:13:16,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:16,839 INFO L93 Difference]: Finished difference Result 227 states and 245 transitions. [2022-10-15 18:13:16,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-10-15 18:13:16,840 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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 45 [2022-10-15 18:13:16,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:16,842 INFO L225 Difference]: With dead ends: 227 [2022-10-15 18:13:16,842 INFO L226 Difference]: Without dead ends: 227 [2022-10-15 18:13:16,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2022-10-15 18:13:16,843 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 377 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:16,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 164 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-15 18:13:16,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-10-15 18:13:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 212. [2022-10-15 18:13:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 203 states have (on average 1.187192118226601) internal successors, (241), 208 states have internal predecessors, (241), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:16,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2022-10-15 18:13:16,852 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 245 transitions. Word has length 45 [2022-10-15 18:13:16,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:16,853 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 245 transitions. [2022-10-15 18:13:16,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.294117647058823) internal successors, (90), 17 states have internal predecessors, (90), 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) [2022-10-15 18:13:16,853 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 245 transitions. [2022-10-15 18:13:16,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-10-15 18:13:16,856 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:16,856 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:16,898 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:17,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:17,069 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:17,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:17,071 INFO L85 PathProgramCache]: Analyzing trace with hash -223018309, now seen corresponding path program 2 times [2022-10-15 18:13:17,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:17,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174134953] [2022-10-15 18:13:17,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:17,071 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:17,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:17,669 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-15 18:13:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174134953] [2022-10-15 18:13:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174134953] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:17,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169172537] [2022-10-15 18:13:17,670 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:17,670 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:17,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:17,678 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) [2022-10-15 18:13:17,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-10-15 18:13:17,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-15 18:13:17,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:17,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-15 18:13:17,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:17,803 INFO L356 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2022-10-15 18:13:17,803 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 2 case distinctions, treesize of input 12 treesize of output 27 [2022-10-15 18:13:18,289 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-10-15 18:13:18,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:13:18,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169172537] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:18,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:13:18,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [17] total 18 [2022-10-15 18:13:18,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231974791] [2022-10-15 18:13:18,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:18,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-15 18:13:18,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:18,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-15 18:13:18,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-10-15 18:13:18,293 INFO L87 Difference]: Start difference. First operand 212 states and 245 transitions. Second operand has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-10-15 18:13:18,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:18,333 INFO L93 Difference]: Finished difference Result 321 states and 373 transitions. [2022-10-15 18:13:18,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-15 18:13:18,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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 93 [2022-10-15 18:13:18,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:18,336 INFO L225 Difference]: With dead ends: 321 [2022-10-15 18:13:18,337 INFO L226 Difference]: Without dead ends: 321 [2022-10-15 18:13:18,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2022-10-15 18:13:18,338 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 19 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:18,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 51 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-15 18:13:18,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-10-15 18:13:18,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 292. [2022-10-15 18:13:18,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 292 states, 283 states have (on average 1.1908127208480566) internal successors, (337), 288 states have internal predecessors, (337), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:18,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 341 transitions. [2022-10-15 18:13:18,350 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 341 transitions. Word has length 93 [2022-10-15 18:13:18,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:18,351 INFO L495 AbstractCegarLoop]: Abstraction has 292 states and 341 transitions. [2022-10-15 18:13:18,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 7.5) internal successors, (15), 3 states have internal predecessors, (15), 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) [2022-10-15 18:13:18,351 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 341 transitions. [2022-10-15 18:13:18,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-10-15 18:13:18,357 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:18,358 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:18,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:18,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:18,572 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:18,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash 427954429, now seen corresponding path program 1 times [2022-10-15 18:13:18,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019117414] [2022-10-15 18:13:18,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:18,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:19,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:19,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019117414] [2022-10-15 18:13:19,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019117414] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596796538] [2022-10-15 18:13:19,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:19,177 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:19,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:19,179 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) [2022-10-15 18:13:19,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-10-15 18:13:19,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:19,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-15 18:13:19,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:19,402 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:19,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:19,868 INFO L134 CoverageAnalysis]: Checked inductivity of 562 backedges. 0 proven. 560 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:19,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596796538] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:19,869 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:19,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2022-10-15 18:13:19,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314136019] [2022-10-15 18:13:19,870 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:19,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-10-15 18:13:19,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:19,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-10-15 18:13:19,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 18:13:19,872 INFO L87 Difference]: Start difference. First operand 292 states and 341 transitions. Second operand has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 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) [2022-10-15 18:13:20,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:20,388 INFO L93 Difference]: Finished difference Result 626 states and 693 transitions. [2022-10-15 18:13:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-10-15 18:13:20,388 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 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 95 [2022-10-15 18:13:20,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:20,392 INFO L225 Difference]: With dead ends: 626 [2022-10-15 18:13:20,392 INFO L226 Difference]: Without dead ends: 626 [2022-10-15 18:13:20,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2022-10-15 18:13:20,395 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 842 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 842 SdHoareTripleChecker+Valid, 310 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:20,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [842 Valid, 310 Invalid, 411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-15 18:13:20,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-10-15 18:13:20,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 596. [2022-10-15 18:13:20,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 587 states have (on average 1.1737649063032367) internal successors, (689), 592 states have internal predecessors, (689), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:20,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 693 transitions. [2022-10-15 18:13:20,414 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 693 transitions. Word has length 95 [2022-10-15 18:13:20,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:20,414 INFO L495 AbstractCegarLoop]: Abstraction has 596 states and 693 transitions. [2022-10-15 18:13:20,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 5.666666666666667) internal successors, (187), 33 states have internal predecessors, (187), 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) [2022-10-15 18:13:20,415 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 693 transitions. [2022-10-15 18:13:20,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-10-15 18:13:20,424 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:20,424 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:20,455 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-10-15 18:13:20,639 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,SelfDestructingSolverStorable12 [2022-10-15 18:13:20,640 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:20,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:20,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1576058045, now seen corresponding path program 2 times [2022-10-15 18:13:20,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:20,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879365209] [2022-10-15 18:13:20,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:20,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:20,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:22,470 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:22,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879365209] [2022-10-15 18:13:22,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879365209] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:22,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [957948776] [2022-10-15 18:13:22,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-15 18:13:22,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:22,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:22,472 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) [2022-10-15 18:13:22,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-10-15 18:13:22,678 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-15 18:13:22,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:22,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 805 conjuncts, 32 conjunts are in the unsatisfiable core [2022-10-15 18:13:22,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:22,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:24,334 INFO L134 CoverageAnalysis]: Checked inductivity of 2642 backedges. 0 proven. 2640 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:24,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [957948776] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:24,334 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:24,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33, 33] total 65 [2022-10-15 18:13:24,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105976261] [2022-10-15 18:13:24,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:24,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-10-15 18:13:24,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:24,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-10-15 18:13:24,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 18:13:24,340 INFO L87 Difference]: Start difference. First operand 596 states and 693 transitions. Second operand has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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) [2022-10-15 18:13:26,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:26,094 INFO L93 Difference]: Finished difference Result 1266 states and 1397 transitions. [2022-10-15 18:13:26,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2022-10-15 18:13:26,096 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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 191 [2022-10-15 18:13:26,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:26,102 INFO L225 Difference]: With dead ends: 1266 [2022-10-15 18:13:26,102 INFO L226 Difference]: Without dead ends: 1266 [2022-10-15 18:13:26,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2080, Invalid=2080, Unknown=0, NotChecked=0, Total=4160 [2022-10-15 18:13:26,105 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 2137 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 579 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2137 SdHoareTripleChecker+Valid, 527 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:26,106 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2137 Valid, 527 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 579 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-10-15 18:13:26,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1266 states. [2022-10-15 18:13:26,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1266 to 1204. [2022-10-15 18:13:26,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1204 states, 1195 states have (on average 1.1656903765690376) internal successors, (1393), 1200 states have internal predecessors, (1393), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:26,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1397 transitions. [2022-10-15 18:13:26,135 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1397 transitions. Word has length 191 [2022-10-15 18:13:26,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:26,136 INFO L495 AbstractCegarLoop]: Abstraction has 1204 states and 1397 transitions. [2022-10-15 18:13:26,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 65 states have (on average 5.8307692307692305) internal successors, (379), 65 states have internal predecessors, (379), 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) [2022-10-15 18:13:26,136 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1397 transitions. [2022-10-15 18:13:26,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-10-15 18:13:26,142 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:26,143 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:26,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:26,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-10-15 18:13:26,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:26,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:26,360 INFO L85 PathProgramCache]: Analyzing trace with hash -2043210691, now seen corresponding path program 3 times [2022-10-15 18:13:26,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:26,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925587149] [2022-10-15 18:13:26,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:26,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 11410 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-10-15 18:13:32,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925587149] [2022-10-15 18:13:32,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925587149] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2110171967] [2022-10-15 18:13:32,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-10-15 18:13:32,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:32,648 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) [2022-10-15 18:13:32,659 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-10-15 18:13:32,829 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-10-15 18:13:32,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-15 18:13:32,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2022-10-15 18:13:32,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:32,853 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-10-15 18:13:32,871 INFO L356 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2022-10-15 18:13:32,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 24 [2022-10-15 18:13:32,877 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 10 treesize of output 8 [2022-10-15 18:13:34,574 INFO L134 CoverageAnalysis]: Checked inductivity of 11410 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 11408 trivial. 0 not checked. [2022-10-15 18:13:34,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-15 18:13:34,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2110171967] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-15 18:13:34,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-15 18:13:34,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [65] total 69 [2022-10-15 18:13:34,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345747264] [2022-10-15 18:13:34,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-15 18:13:34,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-15 18:13:34,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:34,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-15 18:13:34,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2094, Invalid=2598, Unknown=0, NotChecked=0, Total=4692 [2022-10-15 18:13:34,579 INFO L87 Difference]: Start difference. First operand 1204 states and 1397 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:34,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:34,657 INFO L93 Difference]: Finished difference Result 1203 states and 1391 transitions. [2022-10-15 18:13:34,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-15 18:13:34,658 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 383 [2022-10-15 18:13:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:34,664 INFO L225 Difference]: With dead ends: 1203 [2022-10-15 18:13:34,665 INFO L226 Difference]: Without dead ends: 1203 [2022-10-15 18:13:34,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 447 GetRequests, 380 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=2094, Invalid=2598, Unknown=0, NotChecked=0, Total=4692 [2022-10-15 18:13:34,667 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 44 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:34,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 71 Invalid, 73 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-15 18:13:34,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1203 states. [2022-10-15 18:13:34,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1203 to 1203. [2022-10-15 18:13:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1203 states, 1195 states have (on average 1.1606694560669457) internal successors, (1387), 1199 states have internal predecessors, (1387), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:34,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1203 states to 1203 states and 1391 transitions. [2022-10-15 18:13:34,695 INFO L78 Accepts]: Start accepts. Automaton has 1203 states and 1391 transitions. Word has length 383 [2022-10-15 18:13:34,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 1203 states and 1391 transitions. [2022-10-15 18:13:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 6 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-15 18:13:34,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1203 states and 1391 transitions. [2022-10-15 18:13:34,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 389 [2022-10-15 18:13:34,703 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:34,704 INFO L195 NwaCegarLoop]: trace histogram [62, 62, 62, 62, 62, 62, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:34,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:34,904 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,SelfDestructingSolverStorable14 [2022-10-15 18:13:34,905 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:34,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:34,905 INFO L85 PathProgramCache]: Analyzing trace with hash -976122519, now seen corresponding path program 1 times [2022-10-15 18:13:34,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:34,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973716510] [2022-10-15 18:13:34,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:34,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:40,535 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 18:13:40,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-15 18:13:40,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973716510] [2022-10-15 18:13:40,536 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973716510] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-15 18:13:40,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529097173] [2022-10-15 18:13:40,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:40,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-15 18:13:40,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-15 18:13:40,541 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) [2022-10-15 18:13:40,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-10-15 18:13:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-15 18:13:40,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 1598 conjuncts, 64 conjunts are in the unsatisfiable core [2022-10-15 18:13:40,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-15 18:13:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 18:13:41,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-15 18:13:47,222 INFO L134 CoverageAnalysis]: Checked inductivity of 11413 backedges. 0 proven. 11408 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-10-15 18:13:47,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529097173] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-15 18:13:47,223 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-15 18:13:47,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65, 65, 65] total 129 [2022-10-15 18:13:47,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538339326] [2022-10-15 18:13:47,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-15 18:13:47,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 129 states [2022-10-15 18:13:47,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-15 18:13:47,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 129 interpolants. [2022-10-15 18:13:47,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-10-15 18:13:47,237 INFO L87 Difference]: Start difference. First operand 1203 states and 1391 transitions. Second operand has 129 states, 129 states have (on average 5.930232558139535) internal successors, (765), 129 states have internal predecessors, (765), 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) [2022-10-15 18:13:57,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-15 18:13:57,812 INFO L93 Difference]: Finished difference Result 2543 states and 2799 transitions. [2022-10-15 18:13:57,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-10-15 18:13:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 129 states, 129 states have (on average 5.930232558139535) internal successors, (765), 129 states have internal predecessors, (765), 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 388 [2022-10-15 18:13:57,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-15 18:13:57,834 INFO L225 Difference]: With dead ends: 2543 [2022-10-15 18:13:57,834 INFO L226 Difference]: Without dead ends: 2543 [2022-10-15 18:13:57,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 839 GetRequests, 712 SyntacticMatches, 0 SemanticMatches, 127 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=8256, Invalid=8256, Unknown=0, NotChecked=0, Total=16512 [2022-10-15 18:13:57,841 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 4703 mSDsluCounter, 950 mSDsCounter, 0 mSdLazyCounter, 1160 mSolverCounterSat, 644 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4703 SdHoareTripleChecker+Valid, 986 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 644 IncrementalHoareTripleChecker+Valid, 1160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-15 18:13:57,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4703 Valid, 986 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [644 Valid, 1160 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-10-15 18:13:57,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2543 states. [2022-10-15 18:13:57,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2543 to 2419. [2022-10-15 18:13:57,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2419 states, 2411 states have (on average 1.1592700124429698) internal successors, (2795), 2415 states have internal predecessors, (2795), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-15 18:13:57,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2419 states to 2419 states and 2799 transitions. [2022-10-15 18:13:57,887 INFO L78 Accepts]: Start accepts. Automaton has 2419 states and 2799 transitions. Word has length 388 [2022-10-15 18:13:57,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-15 18:13:57,888 INFO L495 AbstractCegarLoop]: Abstraction has 2419 states and 2799 transitions. [2022-10-15 18:13:57,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 129 states, 129 states have (on average 5.930232558139535) internal successors, (765), 129 states have internal predecessors, (765), 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) [2022-10-15 18:13:57,889 INFO L276 IsEmpty]: Start isEmpty. Operand 2419 states and 2799 transitions. [2022-10-15 18:13:57,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2022-10-15 18:13:57,911 INFO L187 NwaCegarLoop]: Found error trace [2022-10-15 18:13:57,911 INFO L195 NwaCegarLoop]: trace histogram [126, 126, 126, 126, 126, 126, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-15 18:13:57,951 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-10-15 18:13:58,124 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,SelfDestructingSolverStorable15 [2022-10-15 18:13:58,125 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 13 more)] === [2022-10-15 18:13:58,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-15 18:13:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash -441041303, now seen corresponding path program 2 times [2022-10-15 18:13:58,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-15 18:13:58,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785034706] [2022-10-15 18:13:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-15 18:13:58,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-15 18:13:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat