/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-34549b5 [2022-04-06 19:48:07,199 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 19:48:07,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 19:48:07,218 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-06 19:48:07,225 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 19:48:07,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 19:48:07,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 19:48:07,227 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 19:48:07,228 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 19:48:07,228 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 19:48:07,229 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 19:48:07,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 19:48:07,231 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 19:48:07,236 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 19:48:07,237 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 19:48:07,237 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 19:48:07,240 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 19:48:07,249 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 19:48:07,254 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 19:48:07,254 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 19:48:07,258 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 19:48:07,259 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-06 19:48:07,267 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 19:48:07,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 19:48:07,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 19:48:07,268 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 19:48:07,268 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 19:48:07,268 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 19:48:07,268 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 19:48:07,268 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 19:48:07,269 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 19:48:07,269 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 19:48:07,269 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 19:48:07,269 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 19:48:07,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:48:07,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 19:48:07,270 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-06 19:48:07,270 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 19:48:07,419 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 19:48:07,443 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 19:48:07,445 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 19:48:07,446 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 19:48:07,446 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 19:48:07,447 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2022-04-06 19:48:07,512 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64c4dff0/ac3f005627074a97ad525021fcde3344/FLAGb99b046f9 [2022-04-06 19:48:07,834 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 19:48:07,834 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/phases_2-1.c [2022-04-06 19:48:07,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64c4dff0/ac3f005627074a97ad525021fcde3344/FLAGb99b046f9 [2022-04-06 19:48:07,850 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d64c4dff0/ac3f005627074a97ad525021fcde3344 [2022-04-06 19:48:07,852 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 19:48:07,853 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-06 19:48:07,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 19:48:07,859 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 19:48:07,862 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 19:48:07,863 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:48:07" (1/1) ... [2022-04-06 19:48:07,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d1cfe3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:07, skipping insertion in model container [2022-04-06 19:48:07,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 07:48:07" (1/1) ... [2022-04-06 19:48:07,868 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 19:48:07,876 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 19:48:07,967 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] [2022-04-06 19:48:07,993 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:48:07,998 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 19:48:08,005 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] [2022-04-06 19:48:08,008 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 19:48:08,016 INFO L208 MainTranslator]: Completed translation [2022-04-06 19:48:08,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08 WrapperNode [2022-04-06 19:48:08,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 19:48:08,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 19:48:08,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 19:48:08,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 19:48:08,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,037 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,040 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,045 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,050 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 19:48:08,050 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 19:48:08,051 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 19:48:08,051 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 19:48:08,051 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (1/1) ... [2022-04-06 19:48:08,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 19:48:08,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 19:48:08,076 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) [2022-04-06 19:48:08,099 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 [2022-04-06 19:48:08,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 19:48:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 19:48:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 19:48:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-06 19:48:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 19:48:08,113 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 19:48:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 19:48:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 19:48:08,113 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 19:48:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 19:48:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-06 19:48:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-06 19:48:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 19:48:08,114 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 19:48:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 19:48:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 19:48:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 19:48:08,115 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 19:48:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 19:48:08,116 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 19:48:08,157 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 19:48:08,159 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 19:48:08,239 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 19:48:08,243 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 19:48:08,243 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 19:48:08,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:48:08 BoogieIcfgContainer [2022-04-06 19:48:08,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 19:48:08,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 19:48:08,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 19:48:08,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 19:48:08,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 07:48:07" (1/3) ... [2022-04-06 19:48:08,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539704ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:48:08, skipping insertion in model container [2022-04-06 19:48:08,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 07:48:08" (2/3) ... [2022-04-06 19:48:08,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@539704ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 07:48:08, skipping insertion in model container [2022-04-06 19:48:08,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 07:48:08" (3/3) ... [2022-04-06 19:48:08,249 INFO L111 eAbstractionObserver]: Analyzing ICFG phases_2-1.c [2022-04-06 19:48:08,252 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-06 19:48:08,252 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 19:48:08,278 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 19:48:08,283 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 [2022-04-06 19:48:08,294 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 19:48:08,306 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) [2022-04-06 19:48:08,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-06 19:48:08,310 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 19:48:08,311 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 19:48:08,311 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 19:48:08,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 19:48:08,314 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 1 times [2022-04-06 19:48:08,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-06 19:48:08,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1501608634] [2022-04-06 19:48:08,327 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-06 19:48:08,327 INFO L85 PathProgramCache]: Analyzing trace with hash -36402350, now seen corresponding path program 2 times [2022-04-06 19:48:08,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 19:48:08,329 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757867388] [2022-04-06 19:48:08,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 19:48:08,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 19:48:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 19:48:08,410 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 19:48:08,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 19:48:08,446 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 19:48:08,448 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-06 19:48:08,449 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 19:48:08,451 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 19:48:08,453 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 19:48:08,456 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-04-06 19:48:08,459 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 19:48:08,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 07:48:08 BoogieIcfgContainer [2022-04-06 19:48:08,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 19:48:08,469 INFO L158 Benchmark]: Toolchain (without parser) took 615.51ms. Allocated memory is still 201.3MB. Free memory was 153.5MB in the beginning and 151.9MB in the end (delta: 1.6MB). Peak memory consumption was 1.6MB. Max. memory is 8.0GB. [2022-04-06 19:48:08,469 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 19:48:08,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 158.44ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 178.5MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-04-06 19:48:08,471 INFO L158 Benchmark]: Boogie Preprocessor took 31.35ms. Allocated memory is still 201.3MB. Free memory was 178.5MB in the beginning and 177.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 19:48:08,472 INFO L158 Benchmark]: RCFGBuilder took 193.83ms. Allocated memory is still 201.3MB. Free memory was 177.0MB in the beginning and 167.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 19:48:08,475 INFO L158 Benchmark]: TraceAbstraction took 222.89ms. Allocated memory is still 201.3MB. Free memory was 166.5MB in the beginning and 151.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-04-06 19:48:08,477 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 201.3MB. Free memory is still 169.4MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 158.44ms. Allocated memory is still 201.3MB. Free memory was 153.3MB in the beginning and 178.5MB in the end (delta: -25.2MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.35ms. Allocated memory is still 201.3MB. Free memory was 178.5MB in the beginning and 177.0MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 193.83ms. Allocated memory is still 201.3MB. Free memory was 177.0MB in the beginning and 167.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 222.89ms. Allocated memory is still 201.3MB. Free memory was 166.5MB in the beginning and 151.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. 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! [2022-04-06 19:48:08,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...