/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/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops/array-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 12:45:52,864 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 12:45:52,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 12:45:52,884 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 12:45:52,909 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 12:45:52,910 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 12:45:52,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 12:45:52,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 12:45:52,917 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 12:45:52,917 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 12:45:52,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 12:45:52,918 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 12:45:52,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 12:45:52,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:45:52,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 12:45:52,920 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 12:45:52,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 12:45:53,110 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 12:45:53,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 12:45:53,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 12:45:53,128 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 12:45:53,128 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 12:45:53,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-2.c [2022-03-20 12:45:53,186 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802628a30/48285e796de0401aa82bd49ecb6e004a/FLAG19f4c8077 [2022-03-20 12:45:53,532 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 12:45:53,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/array-2.c [2022-03-20 12:45:53,536 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802628a30/48285e796de0401aa82bd49ecb6e004a/FLAG19f4c8077 [2022-03-20 12:45:53,957 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/802628a30/48285e796de0401aa82bd49ecb6e004a [2022-03-20 12:45:53,959 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 12:45:53,959 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 12:45:53,962 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 12:45:53,963 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 12:45:53,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 12:45:53,966 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:45:53" (1/1) ... [2022-03-20 12:45:53,967 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7749a68b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:53, skipping insertion in model container [2022-03-20 12:45:53,968 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 12:45:53" (1/1) ... [2022-03-20 12:45:53,972 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 12:45:53,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 12:45:54,170 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/array-2.c[319,332] [2022-03-20 12:45:54,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:45:54,194 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 12:45:54,202 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/array-2.c[319,332] [2022-03-20 12:45:54,212 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 12:45:54,223 INFO L208 MainTranslator]: Completed translation [2022-03-20 12:45:54,223 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54 WrapperNode [2022-03-20 12:45:54,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 12:45:54,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 12:45:54,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 12:45:54,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 12:45:54,233 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,239 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,240 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,250 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,254 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,257 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 12:45:54,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 12:45:54,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 12:45:54,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 12:45:54,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (1/1) ... [2022-03-20 12:45:54,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 12:45:54,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 12:45:54,284 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) [2022-03-20 12:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 12:45:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 12:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 12:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 12:45:54,311 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 12:45:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 12:45:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 12:45:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 12:45:54,311 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 12:45:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 12:45:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 12:45:54,312 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 12:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-03-20 12:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 12:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 12:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 12:45:54,313 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 12:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 12:45:54,314 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 12:45:54,302 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 [2022-03-20 12:45:54,363 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 12:45:54,364 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 12:45:54,463 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 12:45:54,467 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 12:45:54,468 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 12:45:54,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:45:54 BoogieIcfgContainer [2022-03-20 12:45:54,469 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 12:45:54,470 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 12:45:54,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 12:45:54,472 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 12:45:54,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 12:45:53" (1/3) ... [2022-03-20 12:45:54,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434429d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:45:54, skipping insertion in model container [2022-03-20 12:45:54,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 12:45:54" (2/3) ... [2022-03-20 12:45:54,474 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@434429d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 12:45:54, skipping insertion in model container [2022-03-20 12:45:54,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 12:45:54" (3/3) ... [2022-03-20 12:45:54,475 INFO L111 eAbstractionObserver]: Analyzing ICFG array-2.c [2022-03-20 12:45:54,478 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 12:45:54,478 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 12:45:54,507 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 12:45:54,512 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 [2022-03-20 12:45:54,512 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 12:45:54,521 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 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) [2022-03-20 12:45:54,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 12:45:54,557 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:45:54,557 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:45:54,558 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:45:54,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:45:54,561 INFO L85 PathProgramCache]: Analyzing trace with hash -588233041, now seen corresponding path program 1 times [2022-03-20 12:45:54,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 12:45:54,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [33582526] [2022-03-20 12:45:54,601 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 12:45:54,601 INFO L85 PathProgramCache]: Analyzing trace with hash -588233041, now seen corresponding path program 2 times [2022-03-20 12:45:54,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:45:54,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685103887] [2022-03-20 12:45:54,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:45:54,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:45:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:45:54,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:45:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:45:54,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:45:54,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:45:54,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685103887] [2022-03-20 12:45:54,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685103887] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:45:54,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:45:54,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 12:45:54,844 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 12:45:54,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [33582526] [2022-03-20 12:45:54,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [33582526] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:45:54,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:45:54,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 12:45:54,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944263718] [2022-03-20 12:45:54,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:45:54,849 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 12:45:54,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 12:45:54,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 12:45:54,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 12:45:54,873 INFO L87 Difference]: Start difference. First operand has 22 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 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) [2022-03-20 12:45:54,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:45:54,908 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2022-03-20 12:45:54,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 12:45:54,910 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 [2022-03-20 12:45:54,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:45:54,914 INFO L225 Difference]: With dead ends: 35 [2022-03-20 12:45:54,915 INFO L226 Difference]: Without dead ends: 15 [2022-03-20 12:45:54,917 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 [2022-03-20 12:45:54,919 INFO L913 BasicCegarLoop]: 22 mSDtfsCounter, 14 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 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 [2022-03-20 12:45:54,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 12:45:54,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-20 12:45:54,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-20 12:45:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 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) [2022-03-20 12:45:54,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-03-20 12:45:54,942 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-03-20 12:45:54,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:45:54,942 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-03-20 12:45:54,942 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) [2022-03-20 12:45:54,942 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-03-20 12:45:54,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 12:45:54,943 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:45:54,943 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:45:54,943 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 12:45:54,943 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:45:54,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:45:54,944 INFO L85 PathProgramCache]: Analyzing trace with hash -903153702, now seen corresponding path program 1 times [2022-03-20 12:45:54,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 12:45:54,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [563136668] [2022-03-20 12:45:54,945 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 12:45:54,945 INFO L85 PathProgramCache]: Analyzing trace with hash -903153702, now seen corresponding path program 2 times [2022-03-20 12:45:54,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:45:54,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520954986] [2022-03-20 12:45:54,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:45:54,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:45:54,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:45:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 12:45:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 12:45:55,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 12:45:55,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 12:45:55,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520954986] [2022-03-20 12:45:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520954986] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:45:55,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:45:55,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 12:45:55,024 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 12:45:55,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [563136668] [2022-03-20 12:45:55,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [563136668] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 12:45:55,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 12:45:55,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 12:45:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403367560] [2022-03-20 12:45:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 12:45:55,025 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 12:45:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 12:45:55,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 12:45:55,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 12:45:55,026 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2022-03-20 12:45:55,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 12:45:55,066 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-03-20 12:45:55,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 12:45:55,067 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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 [2022-03-20 12:45:55,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 12:45:55,068 INFO L225 Difference]: With dead ends: 24 [2022-03-20 12:45:55,068 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 12:45:55,069 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 12:45:55,072 INFO L913 BasicCegarLoop]: 13 mSDtfsCounter, 16 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 12:45:55,073 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 20 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 12:45:55,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 12:45:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2022-03-20 12:45:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 11 states have (on average 1.1818181818181819) internal successors, (13), 11 states have internal predecessors, (13), 3 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) [2022-03-20 12:45:55,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2022-03-20 12:45:55,077 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 12 [2022-03-20 12:45:55,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 12:45:55,077 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2022-03-20 12:45:55,077 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 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) [2022-03-20 12:45:55,078 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2022-03-20 12:45:55,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-20 12:45:55,078 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 12:45:55,078 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 12:45:55,078 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 12:45:55,078 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 12:45:55,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 12:45:55,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1274683932, now seen corresponding path program 1 times [2022-03-20 12:45:55,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 12:45:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [701782138] [2022-03-20 12:45:55,092 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 4 HavocedVariables, 3 AssignedVariables, -1 ReadonlyVariables, Eigenvalues: {}, 0 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 12:45:55,092 WARN L91 AcceleratorJordan]: Jordan acceleration failed, because NONINTEGER_UPDATE [2022-03-20 12:45:55,093 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 12:45:55,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1274683932, now seen corresponding path program 2 times [2022-03-20 12:45:55,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 12:45:55,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518409417] [2022-03-20 12:45:55,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 12:45:55,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 12:45:55,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 12:45:55,121 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 12:45:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 12:45:55,157 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 12:45:55,157 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-03-20 12:45:55,157 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 12:45:55,159 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 12:45:55,160 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 12:45:55,162 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-20 12:45:55,164 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 12:45:55,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 12:45:55 BoogieIcfgContainer [2022-03-20 12:45:55,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 12:45:55,180 INFO L158 Benchmark]: Toolchain (without parser) took 1218.13ms. Allocated memory was 216.0MB in the beginning and 314.6MB in the end (delta: 98.6MB). Free memory was 159.0MB in the beginning and 230.6MB in the end (delta: -71.6MB). Peak memory consumption was 27.0MB. Max. memory is 8.0GB. [2022-03-20 12:45:55,182 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 175.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 12:45:55,182 INFO L158 Benchmark]: CACSL2BoogieTranslator took 261.37ms. Allocated memory was 216.0MB in the beginning and 314.6MB in the end (delta: 98.6MB). Free memory was 158.7MB in the beginning and 284.1MB in the end (delta: -125.3MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. [2022-03-20 12:45:55,183 INFO L158 Benchmark]: Boogie Preprocessor took 36.64ms. Allocated memory is still 314.6MB. Free memory was 284.1MB in the beginning and 282.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 12:45:55,183 INFO L158 Benchmark]: RCFGBuilder took 207.35ms. Allocated memory is still 314.6MB. Free memory was 282.9MB in the beginning and 272.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 12:45:55,183 INFO L158 Benchmark]: TraceAbstraction took 707.19ms. Allocated memory is still 314.6MB. Free memory was 271.5MB in the beginning and 230.6MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. Max. memory is 8.0GB. [2022-03-20 12:45:55,184 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 216.0MB. Free memory is still 175.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 261.37ms. Allocated memory was 216.0MB in the beginning and 314.6MB in the end (delta: 98.6MB). Free memory was 158.7MB in the beginning and 284.1MB in the end (delta: -125.3MB). Peak memory consumption was 6.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 36.64ms. Allocated memory is still 314.6MB. Free memory was 284.1MB in the beginning and 282.9MB in the end (delta: 1.2MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 207.35ms. Allocated memory is still 314.6MB. Free memory was 282.9MB in the beginning and 272.4MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 707.19ms. Allocated memory is still 314.6MB. Free memory was 271.5MB in the beginning and 230.6MB in the end (delta: 40.9MB). Peak memory consumption was 40.9MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] unsigned int SIZE=1; [L16] unsigned int j,k; [L17] int array[SIZE], menor; [L19] menor = __VERIFIER_nondet_int() [L21] j=0 [L21] COND TRUE jmenor) [L6] COND TRUE !(cond) [L7] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 31 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 30 mSDsluCounter, 45 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 10 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 17 IncrementalHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 35 mSDtfsCounter, 17 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, 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! [2022-03-20 12:45:55,215 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...