/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-Overflow-32bit-Automizer_Default.epf -i ../sv-benchmarks/c/termination-memory-alloca/Toulouse-BranchesToLoop-alloca.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05d3305-m [2022-10-16 17:53:58,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-16 17:53:58,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-16 17:53:58,479 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-16 17:53:58,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-16 17:53:58,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-16 17:53:58,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-16 17:53:58,508 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-16 17:53:58,511 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-16 17:53:58,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-16 17:53:58,520 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-16 17:53:58,523 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-16 17:53:58,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-16 17:53:58,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-16 17:53:58,529 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-16 17:53:58,535 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-16 17:53:58,537 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-16 17:53:58,539 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-16 17:53:58,543 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-16 17:53:58,551 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-16 17:53:58,555 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-16 17:53:58,556 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-16 17:53:58,558 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-16 17:53:58,561 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-16 17:53:58,568 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-10-16 17:53:58,584 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-16 17:53:58,584 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-16 17:53:58,585 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-16 17:53:58,586 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Overflow-32bit-Automizer_Default.epf [2022-10-16 17:53:58,615 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-16 17:53:58,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-16 17:53:58,615 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-16 17:53:58,616 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-16 17:53:58,617 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-16 17:53:58,617 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-16 17:53:58,618 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-16 17:53:58,618 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-16 17:53:58,618 INFO L138 SettingsManager]: * Use SBE=true [2022-10-16 17:53:58,618 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-16 17:53:58,619 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-10-16 17:53:58,620 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-16 17:53:58,620 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-10-16 17:53:58,620 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2022-10-16 17:53:58,620 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-16 17:53:58,620 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-10-16 17:53:58,621 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-16 17:53:58,621 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-10-16 17:53:58,621 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-16 17:53:58,621 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-16 17:53:58,621 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-16 17:53:58,622 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:53:58,622 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-16 17:53:58,622 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-16 17:53:58,622 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-10-16 17:53:58,623 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-16 17:53:58,623 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-16 17:53:58,623 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-10-16 17:53:58,623 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-10-16 17:53:59,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-16 17:53:59,064 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-16 17:53:59,067 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-16 17:53:59,068 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-16 17:53:59,069 INFO L275 PluginConnector]: CDTParser initialized [2022-10-16 17:53:59,071 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-memory-alloca/Toulouse-BranchesToLoop-alloca.i [2022-10-16 17:53:59,161 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fa164a6/23a80e99b7794684a6353828077a3bc1/FLAG1de905f48 [2022-10-16 17:53:59,997 INFO L306 CDTParser]: Found 1 translation units. [2022-10-16 17:53:59,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-memory-alloca/Toulouse-BranchesToLoop-alloca.i [2022-10-16 17:54:00,017 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fa164a6/23a80e99b7794684a6353828077a3bc1/FLAG1de905f48 [2022-10-16 17:54:00,247 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f4fa164a6/23a80e99b7794684a6353828077a3bc1 [2022-10-16 17:54:00,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-16 17:54:00,257 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-10-16 17:54:00,261 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-16 17:54:00,262 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-16 17:54:00,266 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-16 17:54:00,268 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@aa32c36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00, skipping insertion in model container [2022-10-16 17:54:00,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-16 17:54:00,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-16 17:54:00,751 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:54:00,762 INFO L203 MainTranslator]: Completed pre-run [2022-10-16 17:54:00,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-16 17:54:00,834 INFO L208 MainTranslator]: Completed translation [2022-10-16 17:54:00,835 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00 WrapperNode [2022-10-16 17:54:00,835 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-16 17:54:00,836 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-16 17:54:00,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-16 17:54:00,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-16 17:54:00,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,862 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,887 INFO L138 Inliner]: procedures = 110, calls = 27, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 72 [2022-10-16 17:54:00,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-16 17:54:00,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-16 17:54:00,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-16 17:54:00,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-16 17:54:00,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,902 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,903 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,908 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,912 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,914 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,918 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-16 17:54:00,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-16 17:54:00,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-16 17:54:00,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-16 17:54:00,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (1/1) ... [2022-10-16 17:54:00,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-16 17:54:00,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-10-16 17:54:00,961 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 17:54:00,977 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 17:54:01,029 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-10-16 17:54:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-10-16 17:54:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-10-16 17:54:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-16 17:54:01,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-16 17:54:01,030 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-16 17:54:01,153 INFO L235 CfgBuilder]: Building ICFG [2022-10-16 17:54:01,156 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-16 17:54:01,448 INFO L276 CfgBuilder]: Performing block encoding [2022-10-16 17:54:01,455 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-16 17:54:01,456 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-10-16 17:54:01,458 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:54:01 BoogieIcfgContainer [2022-10-16 17:54:01,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-16 17:54:01,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-16 17:54:01,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-16 17:54:01,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-16 17:54:01,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 05:54:00" (1/3) ... [2022-10-16 17:54:01,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfda661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:54:01, skipping insertion in model container [2022-10-16 17:54:01,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 05:54:00" (2/3) ... [2022-10-16 17:54:01,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cfda661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 05:54:01, skipping insertion in model container [2022-10-16 17:54:01,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 05:54:01" (3/3) ... [2022-10-16 17:54:01,469 INFO L112 eAbstractionObserver]: Analyzing ICFG Toulouse-BranchesToLoop-alloca.i [2022-10-16 17:54:01,495 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-16 17:54:01,495 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2022-10-16 17:54:01,586 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-16 17:54:01,607 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@3b6ae8b5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-16 17:54:01,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-10-16 17:54:01,621 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 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 17:54:01,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:54:01,629 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:54:01,630 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:54:01,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:54:01,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:54:01,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1805060808, now seen corresponding path program 1 times [2022-10-16 17:54:01,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:54:01,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108000258] [2022-10-16 17:54:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:54:01,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:54:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:54:01,981 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 17:54:01,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:54:01,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108000258] [2022-10-16 17:54:01,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108000258] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:54:01,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:54:01,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-16 17:54:01,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579124422] [2022-10-16 17:54:01,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:54:01,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-10-16 17:54:01,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:54:02,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-10-16 17:54:02,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-10-16 17:54:02,031 INFO L87 Difference]: Start difference. First operand has 18 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 17 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) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 17:54:02,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:54:02,069 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2022-10-16 17:54:02,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-10-16 17:54:02,072 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 17:54:02,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:54:02,090 INFO L225 Difference]: With dead ends: 34 [2022-10-16 17:54:02,091 INFO L226 Difference]: Without dead ends: 14 [2022-10-16 17:54:02,096 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 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 17:54:02,108 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 0 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:54:02,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 33 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:54:02,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-10-16 17:54:02,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-10-16 17:54:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.5) internal successors, (15), 13 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:54:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-10-16 17:54:02,150 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 7 [2022-10-16 17:54:02,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:54:02,151 INFO L495 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-10-16 17:54:02,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 17:54:02,152 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-10-16 17:54:02,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:54:02,153 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:54:02,153 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:54:02,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-10-16 17:54:02,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:54:02,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:54:02,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1805058886, now seen corresponding path program 1 times [2022-10-16 17:54:02,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:54:02,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67990369] [2022-10-16 17:54:02,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:54:02,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:54:02,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:54:02,637 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 17:54:02,637 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:54:02,637 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67990369] [2022-10-16 17:54:02,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67990369] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:54:02,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:54:02,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:54:02,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976727431] [2022-10-16 17:54:02,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:54:02,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:54:02,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:54:02,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:54:02,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:54:02,644 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:02,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:54:02,783 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2022-10-16 17:54:02,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-16 17:54:02,784 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:02,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:54:02,785 INFO L225 Difference]: With dead ends: 21 [2022-10-16 17:54:02,785 INFO L226 Difference]: Without dead ends: 20 [2022-10-16 17:54:02,786 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-10-16 17:54:02,788 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-16 17:54:02,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 30 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-16 17:54:02,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2022-10-16 17:54:02,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2022-10-16 17:54:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:54:02,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-10-16 17:54:02,795 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2022-10-16 17:54:02,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:54:02,796 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-10-16 17:54:02,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:02,796 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-10-16 17:54:02,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-10-16 17:54:02,797 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:54:02,797 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:54:02,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-10-16 17:54:02,798 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:54:02,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:54:02,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1806905928, now seen corresponding path program 1 times [2022-10-16 17:54:02,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:54:02,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562731238] [2022-10-16 17:54:02,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:54:02,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:54:02,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-16 17:54:03,078 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 17:54:03,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-10-16 17:54:03,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562731238] [2022-10-16 17:54:03,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562731238] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-16 17:54:03,080 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-16 17:54:03,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-16 17:54:03,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456843389] [2022-10-16 17:54:03,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-16 17:54:03,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-16 17:54:03,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-10-16 17:54:03,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-16 17:54:03,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-10-16 17:54:03,086 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:03,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-16 17:54:03,183 INFO L93 Difference]: Finished difference Result 25 states and 26 transitions. [2022-10-16 17:54:03,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-16 17:54:03,184 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:03,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-16 17:54:03,185 INFO L225 Difference]: With dead ends: 25 [2022-10-16 17:54:03,185 INFO L226 Difference]: Without dead ends: 24 [2022-10-16 17:54:03,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-10-16 17:54:03,188 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 11 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-16 17:54:03,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 38 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-16 17:54:03,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-10-16 17:54:03,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 18. [2022-10-16 17:54:03,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-10-16 17:54:03,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2022-10-16 17:54:03,194 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 7 [2022-10-16 17:54:03,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-16 17:54:03,195 INFO L495 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2022-10-16 17:54:03,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 6 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 17:54:03,195 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2022-10-16 17:54:03,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-10-16 17:54:03,196 INFO L187 NwaCegarLoop]: Found error trace [2022-10-16 17:54:03,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-10-16 17:54:03,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-10-16 17:54:03,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 1 more)] === [2022-10-16 17:54:03,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-16 17:54:03,198 INFO L85 PathProgramCache]: Analyzing trace with hash 122250675, now seen corresponding path program 1 times [2022-10-16 17:54:03,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-10-16 17:54:03,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590632837] [2022-10-16 17:54:03,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-16 17:54:03,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-10-16 17:54:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 17:54:03,232 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-10-16 17:54:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-10-16 17:54:03,288 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-10-16 17:54:03,288 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-10-16 17:54:03,290 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 4 remaining) [2022-10-16 17:54:03,292 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 4 remaining) [2022-10-16 17:54:03,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 4 remaining) [2022-10-16 17:54:03,293 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 4 remaining) [2022-10-16 17:54:03,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-10-16 17:54:03,298 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-10-16 17:54:03,304 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-10-16 17:54:03,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.10 05:54:03 BoogieIcfgContainer [2022-10-16 17:54:03,341 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-10-16 17:54:03,343 INFO L158 Benchmark]: Toolchain (without parser) took 3089.83ms. Allocated memory was 156.2MB in the beginning and 200.3MB in the end (delta: 44.0MB). Free memory was 129.6MB in the beginning and 177.0MB in the end (delta: -47.4MB). Peak memory consumption was 82.9MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,343 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 156.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-10-16 17:54:03,344 INFO L158 Benchmark]: CACSL2BoogieTranslator took 574.12ms. Allocated memory is still 156.2MB. Free memory was 129.4MB in the beginning and 114.5MB in the end (delta: 14.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,345 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.62ms. Allocated memory is still 156.2MB. Free memory was 114.5MB in the beginning and 112.6MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,346 INFO L158 Benchmark]: Boogie Preprocessor took 29.25ms. Allocated memory is still 156.2MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,346 INFO L158 Benchmark]: RCFGBuilder took 539.75ms. Allocated memory is still 156.2MB. Free memory was 111.3MB in the beginning and 134.5MB in the end (delta: -23.2MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,347 INFO L158 Benchmark]: TraceAbstraction took 1880.62ms. Allocated memory was 156.2MB in the beginning and 200.3MB in the end (delta: 44.0MB). Free memory was 134.0MB in the beginning and 177.0MB in the end (delta: -43.0MB). Peak memory consumption was 87.5MB. Max. memory is 8.0GB. [2022-10-16 17:54:03,360 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 156.2MB. Free memory is still 127.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 574.12ms. Allocated memory is still 156.2MB. Free memory was 129.4MB in the beginning and 114.5MB in the end (delta: 14.9MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 51.62ms. Allocated memory is still 156.2MB. Free memory was 114.5MB in the beginning and 112.6MB in the end (delta: 1.9MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.25ms. Allocated memory is still 156.2MB. Free memory was 112.6MB in the beginning and 111.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 539.75ms. Allocated memory is still 156.2MB. Free memory was 111.3MB in the beginning and 134.5MB in the end (delta: -23.2MB). Peak memory consumption was 12.2MB. Max. memory is 8.0GB. * TraceAbstraction took 1880.62ms. Allocated memory was 156.2MB in the beginning and 200.3MB in the end (delta: 44.0MB). Free memory was 134.0MB in the beginning and 177.0MB in the end (delta: -43.0MB). Peak memory consumption was 87.5MB. 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 - CounterExampleResult [Line: 559]: integer overflow possible integer overflow possible We found a FailurePath: [L548] int* x = __builtin_alloca (sizeof(int)); [L549] int* y = __builtin_alloca (sizeof(int)); [L550] int* z = __builtin_alloca (sizeof(int)); [L551] int* m = __builtin_alloca (sizeof(int)); [L552] int* n = __builtin_alloca (sizeof(int)); [L553] COND TRUE __VERIFIER_nondet_int() [L554] *x = 1 VAL [__builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={5:0}, __builtin_alloca (sizeof(int))={7:0}, __builtin_alloca (sizeof(int))={6:0}, __builtin_alloca (sizeof(int))={3:0}, m={5:0}, n={3:0}, x={6:0}, y={7:0}, z={2:0}] [L558] EXPR \read(*y) [L558] *y < 100 && *z < 100 [L558] EXPR \read(*z) [L558] *y < 100 && *z < 100 VAL [*y < 100 && *z < 100=1, \read(*y)=-2147483650, \read(*z)=-1, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={5:0}, __builtin_alloca (sizeof(int))={7:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={6:0}, m={5:0}, n={3:0}, x={6:0}, y={7:0}, z={2:0}] [L558] COND TRUE *y < 100 && *z < 100 [L559] EXPR \read(*y) [L559] EXPR \read(*x) VAL [\read(*x)=1, \read(*y)=-2147483650, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={5:0}, __builtin_alloca (sizeof(int))={7:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={6:0}, m={5:0}, n={3:0}, x={6:0}, y={7:0}, z={2:0}] [L559] *y + *x VAL [\read(*x)=1, \read(*y)=-2147483650, __builtin_alloca (sizeof(int))={2:0}, __builtin_alloca (sizeof(int))={5:0}, __builtin_alloca (sizeof(int))={7:0}, __builtin_alloca (sizeof(int))={3:0}, __builtin_alloca (sizeof(int))={6:0}, m={5:0}, n={3:0}, x={6:0}, y={7:0}, z={2:0}] - UnprovableResult [Line: 559]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 560]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 23 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 101 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 58 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 68 IncrementalHoareTripleChecker+Invalid, 73 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 43 mSDtfsCounter, 68 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 3 MinimizatonAttempts, 8 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 29 NumberOfCodeBlocks, 29 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 18 ConstructedInterpolants, 0 QuantifiedInterpolants, 101 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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 RESULT: Ultimate proved your program to be incorrect! [2022-10-16 17:54:03,426 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...