/usr/bin/java -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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:15:54,045 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:15:54,047 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:15:54,086 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:15:54,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 00:15:54,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 00:15:54,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 00:15:54,101 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 00:15:54,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 00:15:54,102 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 00:15:54,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 00:15:54,108 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 00:15:54,110 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 00:15:54,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 00:15:54,111 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 00:15:54,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 00:15:54,113 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 00:15:54,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 00:15:54,120 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:15:54,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:15:54,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:15:54,122 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 00:15:54,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:15:54,130 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:15:54,132 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:15:54,132 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:15:54,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:15:54,133 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:15:54,133 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:15:54,134 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:15:54,134 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:15:54,134 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:15:54,134 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:15:54,134 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:15:54,134 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:15:54,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:15:54,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:15:54,367 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:15:54,367 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:15:54,368 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:15:54,368 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2022-03-18 00:15:54,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574d57cf9/801e6768c6814d0facedee744353ecfe/FLAG0bac5f768 [2022-03-18 00:15:54,757 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:15:54,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2022-03-18 00:15:54,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574d57cf9/801e6768c6814d0facedee744353ecfe/FLAG0bac5f768 [2022-03-18 00:15:54,780 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/574d57cf9/801e6768c6814d0facedee744353ecfe [2022-03-18 00:15:54,781 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:15:54,782 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:15:54,786 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:15:54,786 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:15:54,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:15:54,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:54,790 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61881b46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54, skipping insertion in model container [2022-03-18 00:15:54,790 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:54,795 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:15:54,804 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:15:54,946 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/phases_2-1.c[459,472] [2022-03-18 00:15:54,957 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:15:54,963 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:15:54,971 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/phases_2-1.c[459,472] [2022-03-18 00:15:54,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:15:54,986 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:15:54,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54 WrapperNode [2022-03-18 00:15:54,986 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:15:54,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:15:54,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:15:54,989 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:15:54,996 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:54,996 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,001 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,006 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,011 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:15:55,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:15:55,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:15:55,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:15:55,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (1/1) ... [2022-03-18 00:15:55,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:15:55,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:15:55,041 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) [2022-03-18 00:15:55,063 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 [2022-03-18 00:15:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:15:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:15:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:15:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 00:15:55,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:15:55,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 00:15:55,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-18 00:15:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:15:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:15:55,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:15:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:15:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:15:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:15:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:15:55,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:15:55,119 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:15:55,120 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:15:55,262 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:15:55,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:15:55,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 00:15:55,272 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:15:55 BoogieIcfgContainer [2022-03-18 00:15:55,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:15:55,274 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:15:55,274 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:15:55,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:15:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:15:54" (1/3) ... [2022-03-18 00:15:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b571bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:15:55, skipping insertion in model container [2022-03-18 00:15:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:15:54" (2/3) ... [2022-03-18 00:15:55,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57b571bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:15:55, skipping insertion in model container [2022-03-18 00:15:55,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:15:55" (3/3) ... [2022-03-18 00:15:55,284 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2022-03-18 00:15:55,287 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:15:55,287 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:15:55,326 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:15:55,334 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 [2022-03-18 00:15:55,335 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:15:55,345 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.5) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-03-18 00:15:55,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 00:15:55,354 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:15:55,355 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:15:55,355 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:15:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:15:55,358 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 1 times [2022-03-18 00:15:55,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:15:55,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2097537119] [2022-03-18 00:15:55,370 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:15:55,371 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 2 times [2022-03-18 00:15:55,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:15:55,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10233200] [2022-03-18 00:15:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:15:55,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:15:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 00:15:55,459 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 00:15:55,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 00:15:55,501 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 00:15:55,503 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-18 00:15:55,503 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 00:15:55,505 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:15:55,507 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:15:55,510 INFO L718 BasicCegarLoop]: Path program histogram: [2] [2022-03-18 00:15:55,512 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:15:55,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:15:55 BoogieIcfgContainer [2022-03-18 00:15:55,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:15:55,523 INFO L158 Benchmark]: Toolchain (without parser) took 740.19ms. Allocated memory is still 200.3MB. Free memory was 150.1MB in the beginning and 150.2MB in the end (delta: -164.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:15:55,523 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 166.5MB in the beginning and 166.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:15:55,524 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.71ms. Allocated memory is still 200.3MB. Free memory was 149.8MB in the beginning and 176.7MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 00:15:55,525 INFO L158 Benchmark]: Boogie Preprocessor took 27.07ms. Allocated memory is still 200.3MB. Free memory was 176.7MB in the beginning and 175.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 00:15:55,525 INFO L158 Benchmark]: RCFGBuilder took 256.48ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 165.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-18 00:15:55,529 INFO L158 Benchmark]: TraceAbstraction took 248.38ms. Allocated memory is still 200.3MB. Free memory was 164.5MB in the beginning and 150.5MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-18 00:15:55,532 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 200.3MB. Free memory was 166.5MB in the beginning and 166.4MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.71ms. Allocated memory is still 200.3MB. Free memory was 149.8MB in the beginning and 176.7MB in the end (delta: -26.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 27.07ms. Allocated memory is still 200.3MB. Free memory was 176.7MB in the beginning and 175.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 256.48ms. Allocated memory is still 200.3MB. Free memory was 175.4MB in the beginning and 165.1MB in the end (delta: 10.3MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 248.38ms. Allocated memory is still 200.3MB. Free memory was 164.5MB in the beginning and 150.5MB in the end (delta: 14.0MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 12]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] unsigned int x = 1; [L19] unsigned int y = __VERIFIER_nondet_uint(); [L21] COND FALSE !(!(y > 0)) [L23] COND FALSE !(x < y) [L31] CALL __VERIFIER_assert(x != y) [L11] COND TRUE !(cond) [L12] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-18 00:15:55,560 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...