/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/loops/for_infinite_loop_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-08 03:34:56,212 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-08 03:34:56,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-08 03:34:56,246 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-08 03:34:56,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-08 03:34:56,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-08 03:34:56,254 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-08 03:34:56,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-08 03:34:56,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-08 03:34:56,256 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-08 03:34:56,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-08 03:34:56,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-08 03:34:56,260 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-08 03:34:56,260 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-08 03:34:56,261 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-08 03:34:56,262 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-08 03:34:56,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-08 03:34:56,264 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-08 03:34:56,270 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-08 03:34:56,271 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-08 03:34:56,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-08 03:34:56,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-08 03:34:56,285 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-08 03:34:56,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-08 03:34:56,286 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-08 03:34:56,286 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-08 03:34:56,286 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-08 03:34:56,286 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-08 03:34:56,287 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-08 03:34:56,287 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-08 03:34:56,287 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-08 03:34:56,287 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-08 03:34:56,287 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-08 03:34:56,288 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-08 03:34:56,288 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-08 03:34:56,288 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-08 03:34:56,288 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-08 03:34:56,288 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-08 03:34:56,289 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-08 03:34:56,289 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-08 03:34:56,289 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:34:56,289 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-08 03:34:56,290 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-08 03:34:56,290 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-08 03:34:56,290 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-08 03:34:56,290 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-08 03:34:56,290 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-08 03:34:56,291 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-08 03:34:56,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-08 03:34:56,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-08 03:34:56,528 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-08 03:34:56,529 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-08 03:34:56,531 INFO L275 PluginConnector]: CDTParser initialized [2022-04-08 03:34:56,532 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/for_infinite_loop_1.c [2022-04-08 03:34:56,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1f20d6d/8c552e87e9194cd5b5dd01fbd96c2b56/FLAGc64ff2afb [2022-04-08 03:34:56,897 INFO L306 CDTParser]: Found 1 translation units. [2022-04-08 03:34:56,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1.c [2022-04-08 03:34:56,903 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1f20d6d/8c552e87e9194cd5b5dd01fbd96c2b56/FLAGc64ff2afb [2022-04-08 03:34:57,326 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5c1f20d6d/8c552e87e9194cd5b5dd01fbd96c2b56 [2022-04-08 03:34:57,328 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-08 03:34:57,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-08 03:34:57,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-08 03:34:57,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-08 03:34:57,335 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-08 03:34:57,336 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,337 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62664b2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57, skipping insertion in model container [2022-04-08 03:34:57,337 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-08 03:34:57,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-08 03:34:57,499 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1.c[418,431] [2022-04-08 03:34:57,523 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:34:57,532 INFO L203 MainTranslator]: Completed pre-run [2022-04-08 03:34:57,542 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/for_infinite_loop_1.c[418,431] [2022-04-08 03:34:57,546 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-08 03:34:57,556 INFO L208 MainTranslator]: Completed translation [2022-04-08 03:34:57,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57 WrapperNode [2022-04-08 03:34:57,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-08 03:34:57,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-08 03:34:57,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-08 03:34:57,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-08 03:34:57,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,577 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,581 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,584 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,589 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-08 03:34:57,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-08 03:34:57,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-08 03:34:57,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-08 03:34:57,591 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (1/1) ... [2022-04-08 03:34:57,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-08 03:34:57,605 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-08 03:34:57,616 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) [2022-04-08 03:34:57,637 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 [2022-04-08 03:34:57,658 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-08 03:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-08 03:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-08 03:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-08 03:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-08 03:34:57,659 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-08 03:34:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-08 03:34:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-08 03:34:57,659 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-08 03:34:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-08 03:34:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-08 03:34:57,660 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-08 03:34:57,661 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-08 03:34:57,705 INFO L234 CfgBuilder]: Building ICFG [2022-04-08 03:34:57,706 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-08 03:34:57,855 INFO L275 CfgBuilder]: Performing block encoding [2022-04-08 03:34:57,860 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-08 03:34:57,860 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-08 03:34:57,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:34:57 BoogieIcfgContainer [2022-04-08 03:34:57,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-08 03:34:57,863 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-08 03:34:57,863 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-08 03:34:57,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-08 03:34:57,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.04 03:34:57" (1/3) ... [2022-04-08 03:34:57,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60704801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:34:57, skipping insertion in model container [2022-04-08 03:34:57,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.04 03:34:57" (2/3) ... [2022-04-08 03:34:57,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60704801 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.04 03:34:57, skipping insertion in model container [2022-04-08 03:34:57,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.04 03:34:57" (3/3) ... [2022-04-08 03:34:57,884 INFO L111 eAbstractionObserver]: Analyzing ICFG for_infinite_loop_1.c [2022-04-08 03:34:57,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-08 03:34:57,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-08 03:34:57,947 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-08 03:34:57,952 INFO L340 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 [2022-04-08 03:34:57,952 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-08 03:34:57,996 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-08 03:34:58,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 03:34:58,001 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:34:58,001 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:34:58,002 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:34:58,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:34:58,006 INFO L85 PathProgramCache]: Analyzing trace with hash -782341743, now seen corresponding path program 1 times [2022-04-08 03:34:58,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:34:58,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [526410701] [2022-04-08 03:34:58,019 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:34:58,020 INFO L85 PathProgramCache]: Analyzing trace with hash -782341743, now seen corresponding path program 2 times [2022-04-08 03:34:58,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:34:58,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951325415] [2022-04-08 03:34:58,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:34:58,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:34:58,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:34:58,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:34:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:34:58,201 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(22, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-08 03:34:58,201 INFO L290 TraceCheckUtils]: 1: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-08 03:34:58,201 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {24#true} {24#true} #52#return; {24#true} is VALID [2022-04-08 03:34:58,203 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {29#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:34:58,203 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(22, 2);call #Ultimate.allocInit(12, 3); {24#true} is VALID [2022-04-08 03:34:58,203 INFO L290 TraceCheckUtils]: 2: Hoare triple {24#true} assume true; {24#true} is VALID [2022-04-08 03:34:58,203 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {24#true} {24#true} #52#return; {24#true} is VALID [2022-04-08 03:34:58,203 INFO L272 TraceCheckUtils]: 4: Hoare triple {24#true} call #t~ret6 := main(); {24#true} is VALID [2022-04-08 03:34:58,204 INFO L290 TraceCheckUtils]: 5: Hoare triple {24#true} ~i~0 := 0;~x~0 := 0;~y~0 := 0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~n~0 := #t~nondet4;havoc #t~nondet4; {24#true} is VALID [2022-04-08 03:34:58,204 INFO L290 TraceCheckUtils]: 6: Hoare triple {24#true} assume !!(~n~0 > 0);~i~0 := 0; {24#true} is VALID [2022-04-08 03:34:58,204 INFO L290 TraceCheckUtils]: 7: Hoare triple {24#true} assume false; {25#false} is VALID [2022-04-08 03:34:58,204 INFO L272 TraceCheckUtils]: 8: Hoare triple {25#false} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {25#false} is VALID [2022-04-08 03:34:58,205 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-08 03:34:58,205 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-08 03:34:58,205 INFO L290 TraceCheckUtils]: 11: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-08 03:34:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:34:58,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:34:58,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1951325415] [2022-04-08 03:34:58,206 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1951325415] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:34:58,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:34:58,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:34:58,211 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:34:58,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [526410701] [2022-04-08 03:34:58,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [526410701] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:34:58,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:34:58,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-08 03:34:58,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729773663] [2022-04-08 03:34:58,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:34:58,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-04-08 03:34:58,216 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:34:58,218 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,243 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,244 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-08 03:34:58,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:34:58,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-08 03:34:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 03:34:58,265 INFO L87 Difference]: Start difference. First operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 14 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,333 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-08 03:34:58,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-08 03:34:58,333 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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 12 [2022-04-08 03:34:58,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:34:58,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2022-04-08 03:34:58,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2022-04-08 03:34:58,342 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 41 transitions. [2022-04-08 03:34:58,386 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 41 edges. 41 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,391 INFO L225 Difference]: With dead ends: 34 [2022-04-08 03:34:58,391 INFO L226 Difference]: Without dead ends: 16 [2022-04-08 03:34:58,393 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-08 03:34:58,396 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:34:58,396 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 22 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:34:58,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-08 03:34:58,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2022-04-08 03:34:58,415 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:34:58,416 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:34:58,416 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:34:58,417 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:34:58,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,419 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-08 03:34:58,419 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-08 03:34:58,419 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:34:58,419 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:34:58,420 INFO L74 IsIncluded]: Start isIncluded. First operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 16 states. [2022-04-08 03:34:58,420 INFO L87 Difference]: Start difference. First operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand 16 states. [2022-04-08 03:34:58,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,422 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-08 03:34:58,422 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-08 03:34:58,422 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:34:58,422 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:34:58,422 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:34:58,422 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:34:58,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-04-08 03:34:58,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2022-04-08 03:34:58,431 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 12 [2022-04-08 03:34:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:34:58,431 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2022-04-08 03:34:58,431 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,432 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 16 states and 16 transitions. [2022-04-08 03:34:58,459 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,459 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2022-04-08 03:34:58,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-08 03:34:58,460 INFO L491 BasicCegarLoop]: Found error trace [2022-04-08 03:34:58,460 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-08 03:34:58,460 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-08 03:34:58,460 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-08 03:34:58,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-08 03:34:58,461 INFO L85 PathProgramCache]: Analyzing trace with hash -780554283, now seen corresponding path program 1 times [2022-04-08 03:34:58,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-08 03:34:58,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1157072258] [2022-04-08 03:34:58,462 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-08 03:34:58,462 INFO L85 PathProgramCache]: Analyzing trace with hash -780554283, now seen corresponding path program 2 times [2022-04-08 03:34:58,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-08 03:34:58,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143721770] [2022-04-08 03:34:58,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-08 03:34:58,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-08 03:34:58,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:34:58,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-08 03:34:58,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-08 03:34:58,576 INFO L290 TraceCheckUtils]: 0: Hoare triple {172#(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(22, 2);call #Ultimate.allocInit(12, 3); {164#true} is VALID [2022-04-08 03:34:58,577 INFO L290 TraceCheckUtils]: 1: Hoare triple {164#true} assume true; {164#true} is VALID [2022-04-08 03:34:58,577 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {164#true} {164#true} #52#return; {164#true} is VALID [2022-04-08 03:34:58,577 INFO L272 TraceCheckUtils]: 0: Hoare triple {164#true} call ULTIMATE.init(); {172#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-08 03:34:58,578 INFO L290 TraceCheckUtils]: 1: Hoare triple {172#(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(22, 2);call #Ultimate.allocInit(12, 3); {164#true} is VALID [2022-04-08 03:34:58,578 INFO L290 TraceCheckUtils]: 2: Hoare triple {164#true} assume true; {164#true} is VALID [2022-04-08 03:34:58,578 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {164#true} {164#true} #52#return; {164#true} is VALID [2022-04-08 03:34:58,578 INFO L272 TraceCheckUtils]: 4: Hoare triple {164#true} call #t~ret6 := main(); {164#true} is VALID [2022-04-08 03:34:58,578 INFO L290 TraceCheckUtils]: 5: Hoare triple {164#true} ~i~0 := 0;~x~0 := 0;~y~0 := 0;assume -2147483648 <= #t~nondet4 && #t~nondet4 <= 2147483647;~n~0 := #t~nondet4;havoc #t~nondet4; {169#(= main_~x~0 0)} is VALID [2022-04-08 03:34:58,579 INFO L290 TraceCheckUtils]: 6: Hoare triple {169#(= main_~x~0 0)} assume !!(~n~0 > 0);~i~0 := 0; {169#(= main_~x~0 0)} is VALID [2022-04-08 03:34:58,579 INFO L290 TraceCheckUtils]: 7: Hoare triple {169#(= main_~x~0 0)} assume !false; {169#(= main_~x~0 0)} is VALID [2022-04-08 03:34:58,580 INFO L272 TraceCheckUtils]: 8: Hoare triple {169#(= main_~x~0 0)} call __VERIFIER_assert((if 0 == ~x~0 then 1 else 0)); {170#(not (= |__VERIFIER_assert_#in~cond| 0))} is VALID [2022-04-08 03:34:58,580 INFO L290 TraceCheckUtils]: 9: Hoare triple {170#(not (= |__VERIFIER_assert_#in~cond| 0))} ~cond := #in~cond; {171#(not (= __VERIFIER_assert_~cond 0))} is VALID [2022-04-08 03:34:58,583 INFO L290 TraceCheckUtils]: 10: Hoare triple {171#(not (= __VERIFIER_assert_~cond 0))} assume 0 == ~cond; {165#false} is VALID [2022-04-08 03:34:58,584 INFO L290 TraceCheckUtils]: 11: Hoare triple {165#false} assume !false; {165#false} is VALID [2022-04-08 03:34:58,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-08 03:34:58,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-08 03:34:58,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143721770] [2022-04-08 03:34:58,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143721770] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:34:58,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:34:58,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:34:58,585 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-08 03:34:58,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1157072258] [2022-04-08 03:34:58,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1157072258] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-08 03:34:58,585 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-08 03:34:58,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-08 03:34:58,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652017577] [2022-04-08 03:34:58,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-08 03:34:58,586 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-08 03:34:58,586 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-08 03:34:58,587 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,595 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,595 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-08 03:34:58,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-08 03:34:58,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-08 03:34:58,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-04-08 03:34:58,596 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,692 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2022-04-08 03:34:58,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-08 03:34:58,693 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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 12 [2022-04-08 03:34:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-08 03:34:58,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2022-04-08 03:34:58,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 16 transitions. [2022-04-08 03:34:58,695 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 16 transitions. [2022-04-08 03:34:58,714 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,714 INFO L225 Difference]: With dead ends: 16 [2022-04-08 03:34:58,714 INFO L226 Difference]: Without dead ends: 0 [2022-04-08 03:34:58,716 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-04-08 03:34:58,719 INFO L913 BasicCegarLoop]: 11 mSDtfsCounter, 13 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-08 03:34:58,719 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-08 03:34:58,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-04-08 03:34:58,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-04-08 03:34:58,721 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-08 03:34:58,721 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) [2022-04-08 03:34:58,721 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) [2022-04-08 03:34:58,721 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) [2022-04-08 03:34:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,722 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 03:34:58,722 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:34:58,722 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:34:58,722 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:34:58,722 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. [2022-04-08 03:34:58,722 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. [2022-04-08 03:34:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-08 03:34:58,723 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2022-04-08 03:34:58,723 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:34:58,723 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:34:58,723 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-08 03:34:58,723 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-08 03:34:58,724 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-08 03:34:58,724 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) [2022-04-08 03:34:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-04-08 03:34:58,725 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-04-08 03:34:58,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-08 03:34:58,726 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-04-08 03:34:58,726 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 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) [2022-04-08 03:34:58,726 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 0 states and 0 transitions. [2022-04-08 03:34:58,726 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-08 03:34:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-04-08 03:34:58,727 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-08 03:34:58,729 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-08 03:34:58,730 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-08 03:34:58,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point L7(line 7) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2022-04-08 03:34:58,811 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2022-04-08 03:34:58,812 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 18 28) the Hoare annotation is: true [2022-04-08 03:34:58,812 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (= main_~x~0 0) [2022-04-08 03:34:58,812 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 18 28) the Hoare annotation is: true [2022-04-08 03:34:58,812 INFO L878 garLoopResultBuilder]: At program point L25-1(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2022-04-08 03:34:58,812 INFO L878 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: (= main_~x~0 0) [2022-04-08 03:34:58,812 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (= main_~x~0 0) [2022-04-08 03:34:58,812 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: false [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 18 28) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 9 14) the Hoare annotation is: true [2022-04-08 03:34:58,813 INFO L878 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 03:34:58,814 INFO L878 garLoopResultBuilder]: At program point L10(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 03:34:58,814 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 03:34:58,814 INFO L878 garLoopResultBuilder]: At program point L10-2(lines 9 14) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-04-08 03:34:58,814 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-04-08 03:34:58,816 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2] [2022-04-08 03:34:58,817 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-08 03:34:58,820 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-08 03:34:58,820 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-08 03:34:58,821 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-08 03:34:58,821 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-08 03:34:58,821 WARN L170 areAnnotationChecker]: L7 has no Hoare annotation [2022-04-08 03:34:58,822 WARN L170 areAnnotationChecker]: L7-2 has no Hoare annotation [2022-04-08 03:34:58,824 INFO L163 areAnnotationChecker]: CFG has 25 edges. 25 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-08 03:34:58,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.04 03:34:58 BoogieIcfgContainer [2022-04-08 03:34:58,830 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-08 03:34:58,831 INFO L158 Benchmark]: Toolchain (without parser) took 1502.43ms. Allocated memory is still 189.8MB. Free memory was 143.7MB in the beginning and 149.9MB in the end (delta: -6.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:34:58,832 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory was 159.9MB in the beginning and 159.8MB in the end (delta: 90.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-08 03:34:58,832 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.44ms. Allocated memory is still 189.8MB. Free memory was 143.6MB in the beginning and 168.7MB in the end (delta: -25.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-08 03:34:58,832 INFO L158 Benchmark]: Boogie Preprocessor took 31.07ms. Allocated memory is still 189.8MB. Free memory was 168.7MB in the beginning and 167.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-08 03:34:58,833 INFO L158 Benchmark]: RCFGBuilder took 271.96ms. Allocated memory is still 189.8MB. Free memory was 167.2MB in the beginning and 156.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-08 03:34:58,833 INFO L158 Benchmark]: TraceAbstraction took 967.94ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 149.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-04-08 03:34:58,834 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 0.11ms. Allocated memory is still 189.8MB. Free memory was 159.9MB in the beginning and 159.8MB in the end (delta: 90.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.44ms. Allocated memory is still 189.8MB. Free memory was 143.6MB in the beginning and 168.7MB in the end (delta: -25.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.07ms. Allocated memory is still 189.8MB. Free memory was 168.7MB in the beginning and 167.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 271.96ms. Allocated memory is still 189.8MB. Free memory was 167.2MB in the beginning and 156.9MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 967.94ms. Allocated memory is still 189.8MB. Free memory was 156.2MB in the beginning and 149.9MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. 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: 11]: 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 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.9s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 25 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 50 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 30 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 33 PreInvPairs, 42 NumberOfFragments, 60 HoareAnnotationTreeSize, 33 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 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: 23]: Loop Invariant Derived loop invariant: x == 0 - ProcedureContractResult [Line: 18]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 9]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-04-08 03:34:58,893 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...