/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/termination-crafted/Arrays03-ValueRestictsIndex-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 05:54:42,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 05:54:42,111 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 05:54:42,146 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-10-16 05:54:42,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 05:54:42,177 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 05:54:42,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 05:54:42,180 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 05:54:42,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 05:54:42,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 05:54:42,185 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 05:54:42,187 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 05:54:42,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 05:54:42,191 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 05:54:42,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 05:54:42,194 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 05:54:42,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 05:54:42,209 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 05:54:42,210 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 05:54:42,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 05:54:42,215 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-16 05:54:42,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 05:54:42,273 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 05:54:42,274 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 05:54:42,274 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 05:54:42,276 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 05:54:42,277 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 05:54:42,278 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 05:54:42,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 05:54:42,279 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 05:54:42,279 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 05:54:42,280 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 05:54:42,281 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 05:54:42,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 05:54:42,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 05:54:42,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 05:54:42,282 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 05:54:42,282 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 05:54:42,282 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 05:54:42,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 05:54:42,283 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 05:54:42,283 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 05:54:42,283 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 05:54:42,283 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 05:54:42,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 05:54:42,284 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 05:54:42,284 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:54:42,284 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 05:54:42,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 05:54:42,285 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 05:54:42,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 05:54:42,285 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 05:54:42,654 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 05:54:42,682 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 05:54:42,685 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 05:54:42,686 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 05:54:42,687 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 05:54:42,689 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-1.c [2022-10-16 05:54:42,766 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ee00a49/5d7c13e836704b73b3718f9f34662150/FLAG43b933262 [2022-10-16 05:54:43,316 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 05:54:43,317 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-crafted/Arrays03-ValueRestictsIndex-1.c [2022-10-16 05:54:43,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ee00a49/5d7c13e836704b73b3718f9f34662150/FLAG43b933262 [2022-10-16 05:54:43,716 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/32ee00a49/5d7c13e836704b73b3718f9f34662150 [2022-10-16 05:54:43,720 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 05:54:43,726 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 05:54:43,728 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 05:54:43,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 05:54:43,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 05:54:43,734 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:43,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779d0859 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43, skipping insertion in model container [2022-10-16 05:54:43,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:43,744 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 05:54:43,758 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 05:54:43,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:54:43,918 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 05:54:43,938 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 05:54:43,959 INFO L208 MainTranslator]: Completed translation [2022-10-16 05:54:43,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43 WrapperNode [2022-10-16 05:54:43,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 05:54:43,961 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 05:54:43,961 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 05:54:43,961 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 05:54:43,969 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:43,977 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:43,999 INFO L138 Inliner]: procedures = 8, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 36 [2022-10-16 05:54:43,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 05:54:44,000 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 05:54:44,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 05:54:44,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 05:54:44,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,011 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,023 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,029 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,033 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,034 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,035 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,037 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 05:54:44,038 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 05:54:44,038 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 05:54:44,038 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 05:54:44,039 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (1/1) ... [2022-10-16 05:54:44,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 05:54:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 05:54:44,076 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-16 05:54:44,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-16 05:54:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 05:54:44,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 05:54:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 05:54:44,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 05:54:44,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 05:54:44,213 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 05:54:44,216 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 05:54:44,440 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 05:54:44,448 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 05:54:44,449 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 05:54:44,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:54:44 BoogieIcfgContainer [2022-10-16 05:54:44,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 05:54:44,454 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 05:54:44,455 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 05:54:44,459 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 05:54:44,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:54:43" (1/3) ... [2022-10-16 05:54:44,460 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355eaf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:54:44, skipping insertion in model container [2022-10-16 05:54:44,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:43" (2/3) ... [2022-10-16 05:54:44,461 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355eaf38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:54:44, skipping insertion in model container [2022-10-16 05:54:44,461 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:54:44" (3/3) ... [2022-10-16 05:54:44,463 INFO L112 eAbstractionObserver]: Analyzing ICFG Arrays03-ValueRestictsIndex-1.c [2022-10-16 05:54:44,490 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 05:54:44,491 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2022-10-16 05:54:44,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 05:54:44,571 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;@429b56fc, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 05:54:44,572 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-10-16 05:54:44,585 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:44,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:54:44,600 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:54:44,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:54:44,602 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-10-16 05:54:44,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:54:44,621 INFO L85 PathProgramCache]: Analyzing trace with hash 925605, now seen corresponding path program 1 times [2022-10-16 05:54:44,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:54:44,637 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444238255] [2022-10-16 05:54:44,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:54:44,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:54:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:54:44,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:54:44,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:54:44,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444238255] [2022-10-16 05:54:45,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444238255] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:54:45,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:54:45,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:54:45,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450024333] [2022-10-16 05:54:45,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:54:45,018 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:54:45,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:54:45,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:54:45,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:54:45,071 INFO L87 Difference]: Start difference. First operand has 19 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 18 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 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) [2022-10-16 05:54:45,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:54:45,107 INFO L93 Difference]: Finished difference Result 17 states and 20 transitions. [2022-10-16 05:54:45,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:54:45,110 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 [2022-10-16 05:54:45,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:54:45,119 INFO L225 Difference]: With dead ends: 17 [2022-10-16 05:54:45,120 INFO L226 Difference]: Without dead ends: 15 [2022-10-16 05:54:45,122 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 [2022-10-16 05:54:45,127 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:54:45,128 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 16 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:54:45,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-10-16 05:54:45,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-10-16 05:54:45,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 18 transitions. [2022-10-16 05:54:45,170 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 18 transitions. Word has length 4 [2022-10-16 05:54:45,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:54:45,170 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 18 transitions. [2022-10-16 05:54:45,171 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) [2022-10-16 05:54:45,171 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 18 transitions. [2022-10-16 05:54:45,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 05:54:45,171 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:54:45,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 05:54:45,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 05:54:45,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-10-16 05:54:45,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:54:45,173 INFO L85 PathProgramCache]: Analyzing trace with hash 925606, now seen corresponding path program 1 times [2022-10-16 05:54:45,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:54:45,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190503533] [2022-10-16 05:54:45,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:54:45,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:54:45,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:54:45,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:54:45,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:54:45,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190503533] [2022-10-16 05:54:45,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190503533] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:54:45,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:54:45,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 05:54:45,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923051779] [2022-10-16 05:54:45,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:54:45,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 05:54:45,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:54:45,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 05:54:45,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 05:54:45,328 INFO L87 Difference]: Start difference. First operand 15 states and 18 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) [2022-10-16 05:54:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:54:45,349 INFO L93 Difference]: Finished difference Result 14 states and 17 transitions. [2022-10-16 05:54:45,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 05:54:45,351 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 [2022-10-16 05:54:45,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:54:45,352 INFO L225 Difference]: With dead ends: 14 [2022-10-16 05:54:45,353 INFO L226 Difference]: Without dead ends: 14 [2022-10-16 05:54:45,357 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 [2022-10-16 05:54:45,361 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 12 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:54:45,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 15 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:54:45,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-16 05:54:45,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-16 05:54:45,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 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) [2022-10-16 05:54:45,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 17 transitions. [2022-10-16 05:54:45,371 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 17 transitions. Word has length 4 [2022-10-16 05:54:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:54:45,373 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 17 transitions. [2022-10-16 05:54:45,373 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) [2022-10-16 05:54:45,375 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 17 transitions. [2022-10-16 05:54:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-10-16 05:54:45,376 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:54:45,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-10-16 05:54:45,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 05:54:45,377 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-10-16 05:54:45,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:54:45,378 INFO L85 PathProgramCache]: Analyzing trace with hash 28727526, now seen corresponding path program 1 times [2022-10-16 05:54:45,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:54:45,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048119731] [2022-10-16 05:54:45,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:54:45,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:54:45,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:54:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:54:45,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:54:45,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048119731] [2022-10-16 05:54:45,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048119731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:54:45,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:54:45,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 05:54:45,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636330796] [2022-10-16 05:54:45,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:54:45,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:54:45,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:54:45,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:54:45,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:54:45,592 INFO L87 Difference]: Start difference. First operand 14 states and 17 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:54:45,611 INFO L93 Difference]: Finished difference Result 13 states and 16 transitions. [2022-10-16 05:54:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:54:45,612 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 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 5 [2022-10-16 05:54:45,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:54:45,612 INFO L225 Difference]: With dead ends: 13 [2022-10-16 05:54:45,613 INFO L226 Difference]: Without dead ends: 8 [2022-10-16 05:54:45,613 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:54:45,615 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 12 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:54:45,615 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:54:45,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2022-10-16 05:54:45,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2022-10-16 05:54:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8 states, 7 states have (on average 1.0) internal successors, (7), 7 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 7 transitions. [2022-10-16 05:54:45,618 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 7 transitions. Word has length 5 [2022-10-16 05:54:45,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:54:45,619 INFO L495 AbstractCegarLoop]: Abstraction has 8 states and 7 transitions. [2022-10-16 05:54:45,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 4 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,619 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 7 transitions. [2022-10-16 05:54:45,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 05:54:45,620 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 05:54:45,620 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 05:54:45,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 05:54:45,621 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 2 more)] === [2022-10-16 05:54:45,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 05:54:45,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1804874024, now seen corresponding path program 1 times [2022-10-16 05:54:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 05:54:45,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023955574] [2022-10-16 05:54:45,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 05:54:45,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 05:54:45,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 05:54:45,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 05:54:45,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 05:54:45,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023955574] [2022-10-16 05:54:45,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023955574] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 05:54:45,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 05:54:45,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 05:54:45,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305078758] [2022-10-16 05:54:45,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 05:54:45,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 05:54:45,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 05:54:45,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 05:54:45,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-16 05:54:45,753 INFO L87 Difference]: Start difference. First operand 8 states and 7 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 05:54:45,777 INFO L93 Difference]: Finished difference Result 7 states and 6 transitions. [2022-10-16 05:54:45,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 05:54:45,778 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 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 7 [2022-10-16 05:54:45,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 05:54:45,779 INFO L225 Difference]: With dead ends: 7 [2022-10-16 05:54:45,779 INFO L226 Difference]: Without dead ends: 0 [2022-10-16 05:54:45,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-16 05:54:45,781 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 4 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 05:54:45,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 05:54:45,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-10-16 05:54:45,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-10-16 05:54:45,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-10-16 05:54:45,784 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 7 [2022-10-16 05:54:45,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 05:54:45,784 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-10-16 05:54:45,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 05:54:45,785 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-10-16 05:54:45,785 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-10-16 05:54:45,788 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 5 remaining) [2022-10-16 05:54:45,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 5 remaining) [2022-10-16 05:54:45,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 5 remaining) [2022-10-16 05:54:45,789 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 5 remaining) [2022-10-16 05:54:45,790 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2022-10-16 05:54:45,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 05:54:45,795 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-16 05:54:45,798 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 05:54:45,803 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:54:45 BoogieIcfgContainer [2022-10-16 05:54:45,803 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 05:54:45,804 INFO L158 Benchmark]: Toolchain (without parser) took 2081.44ms. Allocated memory is still 151.0MB. Free memory was 126.2MB in the beginning and 93.3MB in the end (delta: 32.9MB). Peak memory consumption was 32.9MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,804 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 05:54:45,805 INFO L158 Benchmark]: CACSL2BoogieTranslator took 231.60ms. Allocated memory is still 151.0MB. Free memory was 126.0MB in the beginning and 116.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,806 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.78ms. Allocated memory is still 151.0MB. Free memory was 116.7MB in the beginning and 115.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,806 INFO L158 Benchmark]: Boogie Preprocessor took 36.75ms. Allocated memory is still 151.0MB. Free memory was 115.4MB in the beginning and 114.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,807 INFO L158 Benchmark]: RCFGBuilder took 413.35ms. Allocated memory is still 151.0MB. Free memory was 114.1MB in the beginning and 104.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,808 INFO L158 Benchmark]: TraceAbstraction took 1348.63ms. Allocated memory is still 151.0MB. Free memory was 103.4MB in the beginning and 93.3MB in the end (delta: 10.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. [2022-10-16 05:54:45,811 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 151.0MB. Free memory is still 120.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 231.60ms. Allocated memory is still 151.0MB. Free memory was 126.0MB in the beginning and 116.9MB in the end (delta: 9.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 38.78ms. Allocated memory is still 151.0MB. Free memory was 116.7MB in the beginning and 115.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.75ms. Allocated memory is still 151.0MB. Free memory was 115.4MB in the beginning and 114.3MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 413.35ms. Allocated memory is still 151.0MB. Free memory was 114.1MB in the beginning and 104.1MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1348.63ms. Allocated memory is still 151.0MB. Free memory was 103.4MB in the beginning and 93.3MB in the end (delta: 10.1MB). Peak memory consumption was 9.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 11]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 41 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 41 mSDsluCounter, 60 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 15 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 27 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 45 mSDtfsCounter, 27 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 20 NumberOfCodeBlocks, 20 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 120 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-10-16 05:54:45,885 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...