/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/loops-crafted-1/sum_by_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 01:51:54,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 01:51:54,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 01:51:54,311 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 01:51:54,312 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 01:51:54,313 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 01:51:54,315 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 01:51:54,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 01:51:54,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 01:51:54,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 01:51:54,322 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 01:51:54,323 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 01:51:54,324 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 01:51:54,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 01:51:54,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 01:51:54,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 01:51:54,329 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 01:51:54,330 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 01:51:54,332 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 01:51:54,334 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 01:51:54,336 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 01:51:54,337 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 01:51:54,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 01:51:54,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 01:51:54,344 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 01:51:54,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-16 01:51:54,356 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-16 01:51:54,357 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-16 01:51:54,358 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-16 01:51:54,359 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-16 01:51:54,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-16 01:51:54,364 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-16 01:51:54,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-16 01:51:54,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 01:51:54,366 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 01:51:54,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 01:51:54,369 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 01:51:54,422 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 01:51:54,423 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 01:51:54,424 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 01:51:54,424 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 01:51:54,425 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 01:51:54,425 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 01:51:54,427 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 01:51:54,427 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 01:51:54,428 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 01:51:54,428 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 01:51:54,428 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 01:51:54,428 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 01:51:54,430 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 01:51:54,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 01:51:54,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 01:51:54,431 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-16 01:51:54,431 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-16 01:51:54,431 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-16 01:51:54,431 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 01:51:54,432 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-16 01:51:54,432 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 01:51:54,432 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 01:51:54,433 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 01:51:54,433 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 01:51:54,433 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 01:51:54,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 01:51:54,434 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 01:51:54,434 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 01:51:54,435 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 01:51:54,435 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 01:51:54,435 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 01:51:54,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 01:51:54,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 01:51:54,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 01:51:54,839 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 01:51:54,840 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 01:51:54,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2022-10-16 01:51:54,919 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ec2fe79/23f3549c163d46a689559a8af06c0676/FLAG622a57972 [2022-10-16 01:51:55,540 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 01:51:55,540 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loops-crafted-1/sum_by_3.c [2022-10-16 01:51:55,547 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ec2fe79/23f3549c163d46a689559a8af06c0676/FLAG622a57972 [2022-10-16 01:51:55,915 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/49ec2fe79/23f3549c163d46a689559a8af06c0676 [2022-10-16 01:51:55,920 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 01:51:55,927 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 01:51:55,930 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 01:51:55,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 01:51:55,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 01:51:55,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:55" (1/1) ... [2022-10-16 01:51:55,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a14909f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:55, skipping insertion in model container [2022-10-16 01:51:55,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:51:55" (1/1) ... [2022-10-16 01:51:55,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 01:51:55,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 01:51:56,131 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/loops-crafted-1/sum_by_3.c[406,419] [2022-10-16 01:51:56,148 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 01:51:56,158 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 01:51:56,173 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/loops-crafted-1/sum_by_3.c[406,419] [2022-10-16 01:51:56,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 01:51:56,194 INFO L208 MainTranslator]: Completed translation [2022-10-16 01:51:56,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56 WrapperNode [2022-10-16 01:51:56,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 01:51:56,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 01:51:56,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 01:51:56,197 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 01:51:56,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,237 INFO L138 Inliner]: procedures = 14, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 46 [2022-10-16 01:51:56,237 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 01:51:56,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 01:51:56,238 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 01:51:56,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 01:51:56,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,259 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 01:51:56,263 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 01:51:56,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 01:51:56,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 01:51:56,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (1/1) ... [2022-10-16 01:51:56,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 01:51:56,284 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:51:56,298 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 01:51:56,322 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 01:51:56,362 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-16 01:51:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-10-16 01:51:56,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 01:51:56,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 01:51:56,431 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 01:51:56,434 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 01:51:56,581 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 01:51:56,588 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 01:51:56,588 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-10-16 01:51:56,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:56 BoogieIcfgContainer [2022-10-16 01:51:56,590 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 01:51:56,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 01:51:56,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 01:51:56,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 01:51:56,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:51:55" (1/3) ... [2022-10-16 01:51:56,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2b09bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:56, skipping insertion in model container [2022-10-16 01:51:56,598 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:51:56" (2/3) ... [2022-10-16 01:51:56,598 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e2b09bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:51:56, skipping insertion in model container [2022-10-16 01:51:56,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:51:56" (3/3) ... [2022-10-16 01:51:56,600 INFO L112 eAbstractionObserver]: Analyzing ICFG sum_by_3.c [2022-10-16 01:51:56,621 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 01:51:56,621 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-10-16 01:51:56,674 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 01:51:56,700 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;@5885c143, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 01:51:56,700 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-10-16 01:51:56,705 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:51:56,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-10-16 01:51:56,727 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:51:56,728 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-10-16 01:51:56,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:51:56,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:51:56,735 INFO L85 PathProgramCache]: Analyzing trace with hash 925657, now seen corresponding path program 1 times [2022-10-16 01:51:56,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:51:56,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399155750] [2022-10-16 01:51:56,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:51:56,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:51:56,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:51:56,927 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 01:51:56,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:51:56,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399155750] [2022-10-16 01:51:56,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399155750] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:51:56,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:51:56,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-16 01:51:56,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925767638] [2022-10-16 01:51:56,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:51:56,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 01:51:56,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:51:56,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 01:51:56,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 01:51:56,984 INFO L87 Difference]: Start difference. First operand has 17 states, 14 states have (on average 1.7142857142857142) internal successors, (24), 16 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) 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 01:51:57,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:51:57,027 INFO L93 Difference]: Finished difference Result 16 states and 19 transitions. [2022-10-16 01:51:57,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 01:51:57,030 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 01:51:57,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:51:57,039 INFO L225 Difference]: With dead ends: 16 [2022-10-16 01:51:57,039 INFO L226 Difference]: Without dead ends: 12 [2022-10-16 01:51:57,042 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 01:51:57,047 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 16 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 18 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 01:51:57,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 18 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:51:57,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-10-16 01:51:57,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-10-16 01:51:57,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 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 01:51:57,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 14 transitions. [2022-10-16 01:51:57,086 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 14 transitions. Word has length 4 [2022-10-16 01:51:57,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:51:57,087 INFO L495 AbstractCegarLoop]: Abstraction has 12 states and 14 transitions. [2022-10-16 01:51:57,087 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 01:51:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 14 transitions. [2022-10-16 01:51:57,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-16 01:51:57,088 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:51:57,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:51:57,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 01:51:57,089 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:51:57,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:51:57,090 INFO L85 PathProgramCache]: Analyzing trace with hash -26777608, now seen corresponding path program 1 times [2022-10-16 01:51:57,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:51:57,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620034712] [2022-10-16 01:51:57,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:51:57,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:51:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:51:58,750 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 01:51:58,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:51:58,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620034712] [2022-10-16 01:51:58,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620034712] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:51:58,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:51:58,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-16 01:51:58,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935686173] [2022-10-16 01:51:58,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:51:58,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-16 01:51:58,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:51:58,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-16 01:51:58,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-10-16 01:51:58,755 INFO L87 Difference]: Start difference. First operand 12 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 01:51:58,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:51:58,930 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2022-10-16 01:51:58,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 01:51:58,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2022-10-16 01:51:58,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:51:58,932 INFO L225 Difference]: With dead ends: 31 [2022-10-16 01:51:58,932 INFO L226 Difference]: Without dead ends: 29 [2022-10-16 01:51:58,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-10-16 01:51:58,934 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 01:51:58,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 25 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 01:51:58,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-10-16 01:51:58,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 17. [2022-10-16 01:51:58,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 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 01:51:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 21 transitions. [2022-10-16 01:51:58,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 21 transitions. Word has length 11 [2022-10-16 01:51:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:51:58,942 INFO L495 AbstractCegarLoop]: Abstraction has 17 states and 21 transitions. [2022-10-16 01:51:58,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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 01:51:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 21 transitions. [2022-10-16 01:51:58,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 01:51:58,943 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:51:58,944 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:51:58,944 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 01:51:58,944 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:51:58,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:51:58,945 INFO L85 PathProgramCache]: Analyzing trace with hash 182012736, now seen corresponding path program 1 times [2022-10-16 01:51:58,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:51:58,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327469750] [2022-10-16 01:51:58,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:51:58,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:51:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:52:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:52:00,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:52:00,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327469750] [2022-10-16 01:52:00,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327469750] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:52:00,138 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829310490] [2022-10-16 01:52:00,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:52:00,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:52:00,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:52:00,142 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:52:00,163 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-10-16 01:52:00,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:52:00,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-16 01:52:00,206 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:52:00,699 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:52:00,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:52:36,804 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:52:36,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:52:36,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829310490] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:52:36,884 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:52:36,884 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-10-16 01:52:36,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [119062504] [2022-10-16 01:52:36,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:52:36,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-10-16 01:52:36,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:52:36,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-10-16 01:52:36,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=281, Unknown=9, NotChecked=0, Total=380 [2022-10-16 01:52:36,893 INFO L87 Difference]: Start difference. First operand 17 states and 21 transitions. Second operand has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:52:38,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:04,701 WARN L233 SmtUtils]: Spent 17.07s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:53:06,883 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse0 (mod c_~SIZE~0 4294967296))) (and (<= (mod (div (mod (+ |c_ULTIMATE.start_main_~i~0#1| (* |c_ULTIMATE.start_main_~j~0#1| 2)) 4294967296) 3) 4294967296) .cse0) (<= (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296) .cse0) (<= c_~SIZE~0 20000001) (= |c_ULTIMATE.start_main_~i~0#1| 0) (<= 20000001 c_~SIZE~0))) is different from true [2022-10-16 01:53:08,891 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:15,470 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification that was a NOOP. DAG size: 21 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:53:17,683 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse1 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse0 (mod c_~SIZE~0 4294967296))) (and (<= (mod (div (mod (+ |c_ULTIMATE.start_main_~i~0#1| (* |c_ULTIMATE.start_main_~j~0#1| 2)) 4294967296) 3) 4294967296) .cse0) (<= c_~SIZE~0 20000001) (<= (mod (div (mod (+ (* .cse1 2) |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 3) 4294967296) .cse0) (let ((.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse2 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (or (not (< .cse1 .cse2)) (<= (mod (div (mod (+ (* .cse3 2) |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296) 3) 4294967296) .cse0) (< .cse3 .cse2))) (<= 20000001 c_~SIZE~0))) is different from true [2022-10-16 01:53:31,203 WARN L233 SmtUtils]: Spent 11.35s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:53:33,224 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:41,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:50,564 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:52,643 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:54,824 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:53:56,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:05,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:07,893 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:10,015 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:12,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:14,270 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:16,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:18,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:20,837 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:23,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:25,190 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:27,348 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:54:29,542 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:02,655 WARN L233 SmtUtils]: Spent 26.31s on a formula simplification that was a NOOP. DAG size: 45 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:55:04,682 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:06,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:09,044 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:09,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:55:09,222 INFO L93 Difference]: Finished difference Result 49 states and 68 transitions. [2022-10-16 01:55:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-16 01:55:09,223 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 01:55:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:55:09,226 INFO L225 Difference]: With dead ends: 49 [2022-10-16 01:55:09,226 INFO L226 Difference]: Without dead ends: 41 [2022-10-16 01:55:09,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 133.0s TimeCoverageRelationStatistics Valid=239, Invalid=622, Unknown=17, NotChecked=114, Total=992 [2022-10-16 01:55:09,240 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 92 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 136 mSolverCounterSat, 37 mSolverCounterUnsat, 23 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 46.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 136 IncrementalHoareTripleChecker+Invalid, 23 IncrementalHoareTripleChecker+Unknown, 4 IncrementalHoareTripleChecker+Unchecked, 49.8s IncrementalHoareTripleChecker+Time [2022-10-16 01:55:09,241 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 29 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 136 Invalid, 23 Unknown, 4 Unchecked, 49.8s Time] [2022-10-16 01:55:09,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-10-16 01:55:09,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 22. [2022-10-16 01:55:09,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.380952380952381) internal successors, (29), 21 states have internal predecessors, (29), 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 01:55:09,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2022-10-16 01:55:09,248 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 29 transitions. Word has length 12 [2022-10-16 01:55:09,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:55:09,248 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 29 transitions. [2022-10-16 01:55:09,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.55) internal successors, (31), 20 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:55:09,249 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 29 transitions. [2022-10-16 01:55:09,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-16 01:55:09,250 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:55:09,250 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:55:09,289 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-10-16 01:55:09,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:55:09,452 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:55:09,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:55:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash -828440446, now seen corresponding path program 1 times [2022-10-16 01:55:09,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:55:09,455 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708341188] [2022-10-16 01:55:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:55:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:55:09,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:55:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:55:09,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:55:09,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708341188] [2022-10-16 01:55:09,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708341188] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:55:09,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 01:55:09,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-16 01:55:09,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308202223] [2022-10-16 01:55:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:55:09,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 01:55:09,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:55:09,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 01:55:09,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 01:55:09,564 INFO L87 Difference]: Start difference. First operand 22 states and 29 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:55:09,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:55:09,590 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2022-10-16 01:55:09,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 01:55:09,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-10-16 01:55:09,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:55:09,592 INFO L225 Difference]: With dead ends: 26 [2022-10-16 01:55:09,592 INFO L226 Difference]: Without dead ends: 22 [2022-10-16 01:55:09,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-16 01:55:09,594 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:55:09,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 18 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:55:09,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-10-16 01:55:09,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-10-16 01:55:09,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.3333333333333333) internal successors, (28), 21 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) [2022-10-16 01:55:09,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2022-10-16 01:55:09,599 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 12 [2022-10-16 01:55:09,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:55:09,599 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2022-10-16 01:55:09,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:55:09,599 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2022-10-16 01:55:09,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 01:55:09,600 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:55:09,600 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:55:09,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 01:55:09,601 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:55:09,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:55:09,601 INFO L85 PathProgramCache]: Analyzing trace with hash 133150594, now seen corresponding path program 1 times [2022-10-16 01:55:09,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:55:09,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078892906] [2022-10-16 01:55:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:55:09,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:55:09,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:55:10,003 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:55:10,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:55:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078892906] [2022-10-16 01:55:10,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078892906] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:55:10,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064295716] [2022-10-16 01:55:10,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:55:10,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:55:10,005 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:55:10,006 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:55:10,024 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-10-16 01:55:10,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:55:10,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-16 01:55:10,048 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:55:10,112 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-10-16 01:55:10,112 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-16 01:55:10,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064295716] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 01:55:10,113 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-16 01:55:10,113 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2022-10-16 01:55:10,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409829662] [2022-10-16 01:55:10,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 01:55:10,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-16 01:55:10,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:55:10,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-16 01:55:10,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-10-16 01:55:10,115 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:55:10,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 01:55:10,177 INFO L93 Difference]: Finished difference Result 22 states and 26 transitions. [2022-10-16 01:55:10,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-16 01:55:10,177 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 14 [2022-10-16 01:55:10,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 01:55:10,178 INFO L225 Difference]: With dead ends: 22 [2022-10-16 01:55:10,178 INFO L226 Difference]: Without dead ends: 20 [2022-10-16 01:55:10,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-16 01:55:10,180 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 01:55:10,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 13 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 01:55:10,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-16 01:55:10,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2022-10-16 01:55:10,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 01:55:10,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2022-10-16 01:55:10,184 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 14 [2022-10-16 01:55:10,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 01:55:10,185 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2022-10-16 01:55:10,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 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 01:55:10,185 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2022-10-16 01:55:10,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-16 01:55:10,186 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 01:55:10,186 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 01:55:10,226 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-10-16 01:55:10,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:55:10,397 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK] === [2022-10-16 01:55:10,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 01:55:10,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1728071361, now seen corresponding path program 1 times [2022-10-16 01:55:10,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 01:55:10,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821487384] [2022-10-16 01:55:10,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:55:10,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 01:55:10,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:55:10,696 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:55:10,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 01:55:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821487384] [2022-10-16 01:55:10,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821487384] provided 0 perfect and 1 imperfect interpolant sequences [2022-10-16 01:55:10,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1835081899] [2022-10-16 01:55:10,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 01:55:10,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-10-16 01:55:10,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 01:55:10,699 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-10-16 01:55:10,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-10-16 01:55:10,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 01:55:10,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 19 conjunts are in the unsatisfiable core [2022-10-16 01:55:10,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-16 01:55:11,301 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:55:11,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-16 01:55:50,688 WARN L233 SmtUtils]: Spent 12.83s on a formula simplification that was a NOOP. DAG size: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:55:50,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-16 01:55:50,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1835081899] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-16 01:55:50,732 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-10-16 01:55:50,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 22 [2022-10-16 01:55:50,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534123869] [2022-10-16 01:55:50,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-10-16 01:55:50,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-10-16 01:55:50,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 01:55:50,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-10-16 01:55:50,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=365, Unknown=7, NotChecked=0, Total=462 [2022-10-16 01:55:50,734 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 22 states, 22 states have (on average 1.5909090909090908) internal successors, (35), 22 states have internal predecessors, (35), 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 01:55:52,750 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:54,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:57,034 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 01:55:59,155 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:01,354 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:03,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:05,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:07,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:10,285 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse3 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296)) (.cse0 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse6 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse2 (not (< .cse0 .cse6))) (.cse4 (< .cse3 .cse6)) (.cse1 (mod c_~SIZE~0 4294967296))) (and (<= (mod (div (mod (+ 2 (* .cse0 2) |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 3) 4294967296) .cse1) (or .cse2 (<= (mod (div (mod (+ (* .cse3 2) 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 3) 4294967296) .cse1) .cse4) (let ((.cse5 (mod (+ 2 |c_ULTIMATE.start_main_~i~0#1|) 4294967296))) (or .cse2 (< .cse5 .cse6) (not .cse4) (<= (mod (div (mod (+ (* 2 .cse5) |c_ULTIMATE.start_main_~i~0#1| 4) 4294967296) 3) 4294967296) .cse1)))))) is different from true [2022-10-16 01:56:19,144 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 47 DAG size of output: 24 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-10-16 01:56:21,271 WARN L855 $PredicateComparison]: unable to prove that (let ((.cse4 (mod |c_ULTIMATE.start_main_~i~0#1| 4294967296)) (.cse3 (mod |c_ULTIMATE.start_main_~n~0#1| 4294967296))) (let ((.cse2 (mod c_~SIZE~0 4294967296)) (.cse0 (< .cse4 .cse3))) (and (let ((.cse1 (mod (+ |c_ULTIMATE.start_main_~i~0#1| 1) 4294967296))) (or (not .cse0) (<= (mod (div (mod (+ (* .cse1 2) 3 |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 3) 4294967296) .cse2) (< .cse1 .cse3))) (or (<= (mod (div (mod (+ 2 (* .cse4 2) |c_ULTIMATE.start_main_~i~0#1|) 4294967296) 3) 4294967296) .cse2) .cse0)))) is different from true [2022-10-16 01:56:23,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:25,536 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:27,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:29,834 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-10-16 01:56:32,013 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []