/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 03:01:21,236 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 03:01:21,249 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 03:01:21,292 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 03:01:21,305 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 03:01:21,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 03:01:21,311 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 03:01:21,313 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 03:01:21,313 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 03:01:21,315 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 03:01:21,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 03:01:21,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 03:01:21,327 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 03:01:21,328 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 03:01:21,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 03:01:21,331 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 03:01:21,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 03:01:21,338 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 03:01:21,345 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 03:01:21,346 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 03:01:21,347 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 03:01:21,348 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 03:01:21,358 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 03:01:21,359 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 03:01:21,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 03:01:21,360 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 03:01:21,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 03:01:21,361 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 03:01:21,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 03:01:21,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 03:01:21,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:01:21,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 03:01:21,363 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 03:01:21,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 03:01:21,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 03:01:21,600 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 03:01:21,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 03:01:21,601 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 03:01:21,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2022-04-28 03:01:21,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0f2bc2/3888dc5f10a5481aa5bb99ca88e10d12/FLAG92311e553 [2022-04-28 03:01:21,998 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 03:01:21,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c [2022-04-28 03:01:22,003 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0f2bc2/3888dc5f10a5481aa5bb99ca88e10d12/FLAG92311e553 [2022-04-28 03:01:22,418 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/69a0f2bc2/3888dc5f10a5481aa5bb99ca88e10d12 [2022-04-28 03:01:22,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 03:01:22,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 03:01:22,422 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 03:01:22,422 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 03:01:22,426 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 03:01:22,427 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,428 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fcdbf73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22, skipping insertion in model container [2022-04-28 03:01:22,428 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,434 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 03:01:22,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 03:01:22,558 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c[372,385] [2022-04-28 03:01:22,580 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:01:22,587 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 03:01:22,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_2-1.c[372,385] [2022-04-28 03:01:22,608 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:01:22,619 INFO L208 MainTranslator]: Completed translation [2022-04-28 03:01:22,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22 WrapperNode [2022-04-28 03:01:22,619 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 03:01:22,620 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 03:01:22,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 03:01:22,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 03:01:22,628 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,633 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,633 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,639 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,640 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 03:01:22,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 03:01:22,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 03:01:22,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 03:01:22,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (1/1) ... [2022-04-28 03:01:22,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:01:22,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:01:22,667 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) [2022-04-28 03:01:22,670 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 [2022-04-28 03:01:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 03:01:22,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 03:01:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 03:01:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 03:01:22,700 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 03:01:22,700 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 03:01:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 03:01:22,701 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 03:01:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 03:01:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 03:01:22,702 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 03:01:22,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 03:01:22,752 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 03:01:22,754 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 03:01:22,841 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 03:01:22,847 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 03:01:22,847 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 03:01:22,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:01:22 BoogieIcfgContainer [2022-04-28 03:01:22,849 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 03:01:22,850 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 03:01:22,850 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 03:01:22,853 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 03:01:22,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:01:22" (1/3) ... [2022-04-28 03:01:22,854 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634257b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:01:22, skipping insertion in model container [2022-04-28 03:01:22,854 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:01:22" (2/3) ... [2022-04-28 03:01:22,855 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@634257b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:01:22, skipping insertion in model container [2022-04-28 03:01:22,855 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:01:22" (3/3) ... [2022-04-28 03:01:22,856 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_2-1.c [2022-04-28 03:01:22,868 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 03:01:22,868 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 03:01:22,905 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 03:01:22,925 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@26c8fa48, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@14d22b5 [2022-04-28 03:01:22,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 03:01:22,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 03:01:22,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-28 03:01:22,944 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:01:22,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:01:22,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:01:22,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:01:22,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 1 times [2022-04-28 03:01:22,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:01:22,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [662026436] [2022-04-28 03:01:22,968 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:01:22,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1301225826, now seen corresponding path program 2 times [2022-04-28 03:01:22,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:01:22,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544481082] [2022-04-28 03:01:22,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:01:22,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:01:23,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:01:23,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:01:23,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:01:23,217 INFO L290 TraceCheckUtils]: 0: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-28 03:01:23,218 INFO L290 TraceCheckUtils]: 1: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-28 03:01:23,218 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {21#true} {21#true} #36#return; {21#true} is VALID [2022-04-28 03:01:23,220 INFO L272 TraceCheckUtils]: 0: Hoare triple {21#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:01:23,220 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(13, 2);call #Ultimate.allocInit(12, 3); {21#true} is VALID [2022-04-28 03:01:23,220 INFO L290 TraceCheckUtils]: 2: Hoare triple {21#true} assume true; {21#true} is VALID [2022-04-28 03:01:23,220 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {21#true} {21#true} #36#return; {21#true} is VALID [2022-04-28 03:01:23,221 INFO L272 TraceCheckUtils]: 4: Hoare triple {21#true} call #t~ret6 := main(); {21#true} is VALID [2022-04-28 03:01:23,221 INFO L290 TraceCheckUtils]: 5: Hoare triple {21#true} ~x~0 := #t~nondet4;havoc #t~nondet4; {21#true} is VALID [2022-04-28 03:01:23,222 INFO L290 TraceCheckUtils]: 6: Hoare triple {21#true} assume !(~x~0 % 4294967296 < 268435455); {26#(< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0)} is VALID [2022-04-28 03:01:23,223 INFO L272 TraceCheckUtils]: 7: Hoare triple {26#(< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0)} call __VERIFIER_assert((if ~x~0 % 4294967296 >= 268435455 then 1 else 0)); {27#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-28 03:01:23,224 INFO L290 TraceCheckUtils]: 8: Hoare triple {27#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {28#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-28 03:01:23,225 INFO L290 TraceCheckUtils]: 9: Hoare triple {28#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {22#false} is VALID [2022-04-28 03:01:23,225 INFO L290 TraceCheckUtils]: 10: Hoare triple {22#false} assume !false; {22#false} is VALID [2022-04-28 03:01:23,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:01:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:01:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544481082] [2022-04-28 03:01:23,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544481082] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:01:23,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:01:23,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 03:01:23,229 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:01:23,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [662026436] [2022-04-28 03:01:23,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [662026436] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:01:23,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:01:23,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 03:01:23,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883880854] [2022-04-28 03:01:23,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:01:23,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:01:23,236 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:01:23,239 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:01:23,257 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:01:23,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 03:01:23,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:01:23,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 03:01:23,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-28 03:01:23,282 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:01:23,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:01:23,494 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2022-04-28 03:01:23,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 03:01:23,494 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-04-28 03:01:23,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:01:23,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:01:23,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 30 transitions. [2022-04-28 03:01:23,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:01:23,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 30 transitions. [2022-04-28 03:01:23,504 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 30 transitions. [2022-04-28 03:01:23,540 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 30 edges. 30 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:01:23,544 INFO L225 Difference]: With dead ends: 27 [2022-04-28 03:01:23,545 INFO L226 Difference]: Without dead ends: 0 [2022-04-28 03:01:23,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-28 03:01:23,555 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 13 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 03:01:23,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 34 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 03:01:23,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-28 03:01:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-28 03:01:23,570 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:01:23,571 INFO L82 GeneralOperation]: Start isEquivalent. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 03:01:23,571 INFO L74 IsIncluded]: Start isIncluded. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 03:01:23,571 INFO L87 Difference]: Start difference. First operand 0 states. Second operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 03:01:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:01:23,572 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 03:01:23,572 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:01:23,572 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:01:23,572 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:01:23,572 INFO L74 IsIncluded]: Start isIncluded. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 03:01:23,573 INFO L87 Difference]: Start difference. First operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand 0 states. [2022-04-28 03:01:23,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:01:23,573 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-28 03:01:23,573 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:01:23,573 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:01:23,573 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:01:23,573 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:01:23,573 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:01:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-04-28 03:01:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-28 03:01:23,575 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2022-04-28 03:01:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:01:23,575 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-28 03:01:23,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.4) internal successors, (7), 4 states have internal predecessors, (7), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:01:23,575 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-28 03:01:23,575 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:01:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-28 03:01:23,576 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:01:23,578 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 03:01:23,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 03:01:23,580 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-28 03:01:23,663 INFO L899 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-28 03:01:23,664 INFO L899 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-28 03:01:23,665 INFO L899 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-28 03:01:23,665 INFO L902 garLoopResultBuilder]: At program point mainENTRY(lines 13 21) the Hoare annotation is: true [2022-04-28 03:01:23,665 INFO L895 garLoopResultBuilder]: At program point mainEXIT(lines 13 21) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2022-04-28 03:01:23,665 INFO L902 garLoopResultBuilder]: At program point L16-2(lines 16 18) the Hoare annotation is: true [2022-04-28 03:01:23,665 INFO L895 garLoopResultBuilder]: At program point L16-3(lines 16 18) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2022-04-28 03:01:23,666 INFO L895 garLoopResultBuilder]: At program point mainFINAL(lines 13 21) the Hoare annotation is: (< (+ (* 4294967296 (div main_~x~0 4294967296)) 268435454) main_~x~0) [2022-04-28 03:01:23,667 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,670 INFO L895 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-28 03:01:23,671 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,671 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,671 INFO L902 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,671 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,671 INFO L902 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-28 03:01:23,672 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2022-04-28 03:01:23,672 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 03:01:23,672 INFO L895 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 03:01:23,672 INFO L895 garLoopResultBuilder]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 03:01:23,672 INFO L895 garLoopResultBuilder]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-28 03:01:23,673 INFO L895 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-28 03:01:23,676 INFO L356 BasicCegarLoop]: Path program histogram: [2] [2022-04-28 03:01:23,678 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 03:01:23,683 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 03:01:23,684 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 03:01:23,689 INFO L163 areAnnotationChecker]: CFG has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 03:01:23,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 03:01:23 BoogieIcfgContainer [2022-04-28 03:01:23,696 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 03:01:23,697 INFO L158 Benchmark]: Toolchain (without parser) took 1276.11ms. Allocated memory was 178.3MB in the beginning and 253.8MB in the end (delta: 75.5MB). Free memory was 122.4MB in the beginning and 166.6MB in the end (delta: -44.2MB). Peak memory consumption was 30.8MB. Max. memory is 8.0GB. [2022-04-28 03:01:23,698 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 03:01:23,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 197.61ms. Allocated memory was 178.3MB in the beginning and 253.8MB in the end (delta: 75.5MB). Free memory was 122.1MB in the beginning and 225.3MB in the end (delta: -103.2MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. [2022-04-28 03:01:23,699 INFO L158 Benchmark]: Boogie Preprocessor took 21.02ms. Allocated memory is still 253.8MB. Free memory was 225.3MB in the beginning and 223.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-28 03:01:23,699 INFO L158 Benchmark]: RCFGBuilder took 207.17ms. Allocated memory is still 253.8MB. Free memory was 223.7MB in the beginning and 212.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 03:01:23,699 INFO L158 Benchmark]: TraceAbstraction took 845.55ms. Allocated memory is still 253.8MB. Free memory was 212.1MB in the beginning and 166.6MB in the end (delta: 45.5MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. [2022-04-28 03:01:23,701 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory was 138.9MB in the beginning and 138.8MB in the end (delta: 129.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 197.61ms. Allocated memory was 178.3MB in the beginning and 253.8MB in the end (delta: 75.5MB). Free memory was 122.1MB in the beginning and 225.3MB in the end (delta: -103.2MB). Peak memory consumption was 14.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.02ms. Allocated memory is still 253.8MB. Free memory was 225.3MB in the beginning and 223.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 207.17ms. Allocated memory is still 253.8MB. Free memory was 223.7MB in the beginning and 212.7MB in the end (delta: 11.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 845.55ms. Allocated memory is still 253.8MB. Free memory was 212.1MB in the beginning and 166.6MB in the end (delta: 45.5MB). Peak memory consumption was 45.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 8]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.8s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 13 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 34 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25 IncrementalHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 13 mSDtfsCounter, 25 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred in iteration=0, InterpolantAutomatonStates: 6, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 18 LocationsWithAnnotation, 24 PreInvPairs, 31 NumberOfFragments, 73 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 18 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 4294967296 * (x / 4294967296) + 268435454 < x - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-28 03:01:23,740 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...