/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/loops-crafted-1/loopv1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:48:26,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:48:26,093 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:48:26,133 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:48:26,171 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:48:26,171 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:48:26,172 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:48:26,173 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 00:48:26,182 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:48:26,182 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:48:26,188 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:48:26,188 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:48:26,189 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:48:26,189 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:48:26,189 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:48:26,189 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:48:26,189 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:48:26,189 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:48:26,190 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:48:26,190 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:48:26,190 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:48:26,376 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:48:26,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:48:26,396 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:48:26,397 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:48:26,399 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:48:26,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv1.c [2022-03-18 00:48:26,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ddd2262a/8e4b9cf5ce844fd89f1b76046090711d/FLAGb93281bc5 [2022-03-18 00:48:26,775 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:48:26,776 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv1.c [2022-03-18 00:48:26,779 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ddd2262a/8e4b9cf5ce844fd89f1b76046090711d/FLAGb93281bc5 [2022-03-18 00:48:26,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ddd2262a/8e4b9cf5ce844fd89f1b76046090711d [2022-03-18 00:48:26,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:48:26,790 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:48:26,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:48:26,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:48:26,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:48:26,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5f5af3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26, skipping insertion in model container [2022-03-18 00:48:26,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,802 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:48:26,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:48:26,916 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-crafted-1/loopv1.c[456,469] [2022-03-18 00:48:26,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:48:26,928 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:48:26,940 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-crafted-1/loopv1.c[456,469] [2022-03-18 00:48:26,942 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:48:26,950 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:48:26,950 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26 WrapperNode [2022-03-18 00:48:26,950 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:48:26,951 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:48:26,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:48:26,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:48:26,958 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,962 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,963 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,965 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,968 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,968 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,973 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:48:26,973 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:48:26,973 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:48:26,973 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:48:26,974 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (1/1) ... [2022-03-18 00:48:26,978 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:48:26,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:48:26,995 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 00:48:27,017 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 00:48:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:48:27,018 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:48:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:48:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 00:48:27,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:48:27,020 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:48:27,020 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:48:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:48:27,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:48:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:48:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:48:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:48:27,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:48:27,070 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:48:27,071 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:48:27,172 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:48:27,176 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:48:27,176 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 00:48:27,177 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:48:27 BoogieIcfgContainer [2022-03-18 00:48:27,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:48:27,178 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:48:27,178 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:48:27,181 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:48:27,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:48:26" (1/3) ... [2022-03-18 00:48:27,181 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ef4f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:48:27, skipping insertion in model container [2022-03-18 00:48:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:48:26" (2/3) ... [2022-03-18 00:48:27,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19ef4f56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:48:27, skipping insertion in model container [2022-03-18 00:48:27,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:48:27" (3/3) ... [2022-03-18 00:48:27,183 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv1.c [2022-03-18 00:48:27,198 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:48:27,198 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:48:27,231 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:48:27,235 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 00:48:27,236 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:48:27,245 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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) [2022-03-18 00:48:27,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 00:48:27,250 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:48:27,250 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:48:27,251 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:48:27,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:48:27,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1965397839, now seen corresponding path program 1 times [2022-03-18 00:48:27,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:48:27,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [218058614] [2022-03-18 00:48:27,267 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:48:27,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1965397839, now seen corresponding path program 2 times [2022-03-18 00:48:27,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:48:27,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282011823] [2022-03-18 00:48:27,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:48:27,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:48:27,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:48:27,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:48:27,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:48:27,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:48:27,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:48:27,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282011823] [2022-03-18 00:48:27,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282011823] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:48:27,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:48:27,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:48:27,511 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:48:27,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [218058614] [2022-03-18 00:48:27,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [218058614] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:48:27,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:48:27,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:48:27,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801601877] [2022-03-18 00:48:27,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:48:27,515 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 00:48:27,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:48:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 00:48:27,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 00:48:27,534 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 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 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:48:27,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:48:27,693 INFO L93 Difference]: Finished difference Result 43 states and 53 transitions. [2022-03-18 00:48:27,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:48:27,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-18 00:48:27,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:48:27,699 INFO L225 Difference]: With dead ends: 43 [2022-03-18 00:48:27,699 INFO L226 Difference]: Without dead ends: 16 [2022-03-18 00:48:27,701 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 00:48:27,704 INFO L912 BasicCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:48:27,705 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:48:27,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-03-18 00:48:27,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-03-18 00:48:27,736 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) [2022-03-18 00:48:27,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-03-18 00:48:27,737 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-03-18 00:48:27,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:48:27,737 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-03-18 00:48:27,737 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-18 00:48:27,738 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-03-18 00:48:27,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-18 00:48:27,738 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:48:27,738 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:48:27,738 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:48:27,739 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:48:27,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:48:27,739 INFO L85 PathProgramCache]: Analyzing trace with hash 2050700910, now seen corresponding path program 1 times [2022-03-18 00:48:27,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:48:27,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [313735246] [2022-03-18 00:48:27,873 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-18 00:48:27,874 INFO L85 PathProgramCache]: Analyzing trace with hash 295982801, now seen corresponding path program 1 times [2022-03-18 00:48:27,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:48:27,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158046637] [2022-03-18 00:48:27,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:48:27,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:48:27,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:48:28,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:48:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:48:28,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:48:28,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:48:28,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158046637] [2022-03-18 00:48:28,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158046637] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:48:28,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:48:28,037 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:48:28,115 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:48:28,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [313735246] [2022-03-18 00:48:28,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [313735246] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:48:28,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:48:28,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-03-18 00:48:28,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548181424] [2022-03-18 00:48:28,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:48:28,119 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-03-18 00:48:28,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:48:28,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-03-18 00:48:28,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-03-18 00:48:28,121 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-03-18 00:48:28,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:48:28,242 INFO L93 Difference]: Finished difference Result 19 states and 23 transitions. [2022-03-18 00:48:28,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-18 00:48:28,242 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 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 14 [2022-03-18 00:48:28,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:48:28,243 INFO L225 Difference]: With dead ends: 19 [2022-03-18 00:48:28,243 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 00:48:28,245 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2022-03-18 00:48:28,247 INFO L912 BasicCegarLoop]: 7 mSDtfsCounter, 14 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 00:48:28,250 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 34 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 00:48:28,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 00:48:28,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 00:48:28,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 00:48:28,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 00:48:28,257 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-18 00:48:28,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:48:28,258 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 00:48:28,258 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 7 states have internal predecessors, (10), 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) [2022-03-18 00:48:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 00:48:28,258 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 00:48:28,260 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:48:28,260 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:48:28,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 00:48:28,360 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 7) no Hoare annotation was computed. [2022-03-18 00:48:28,361 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 7) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 7) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L882 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L882 garLoopResultBuilder]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2022-03-18 00:48:28,364 INFO L885 garLoopResultBuilder]: At program point L32(line 32) the Hoare annotation is: true [2022-03-18 00:48:28,365 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 20 34) the Hoare annotation is: true [2022-03-18 00:48:28,365 INFO L878 garLoopResultBuilder]: At program point L27(lines 27 30) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2022-03-18 00:48:28,365 INFO L878 garLoopResultBuilder]: At program point L27-2(lines 25 31) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2022-03-18 00:48:28,365 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 20 34) the Hoare annotation is: true [2022-03-18 00:48:28,365 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-03-18 00:48:28,365 INFO L878 garLoopResultBuilder]: At program point L25-2(lines 25 31) the Hoare annotation is: (and (<= main_~i~0 (* 3 (div main_~i~0 3))) (<= 0 main_~i~0)) [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 20 34) the Hoare annotation is: true [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,366 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~SIZE~0)| ~SIZE~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,366 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,367 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:48:28,367 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 12 17) the Hoare annotation is: true [2022-03-18 00:48:28,367 INFO L878 garLoopResultBuilder]: At program point L14(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 00:48:28,367 INFO L878 garLoopResultBuilder]: At program point L13(lines 13 15) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:48:28,367 INFO L878 garLoopResultBuilder]: At program point L13-2(lines 12 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:48:28,367 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 12 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-18 00:48:28,368 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 14) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-18 00:48:28,370 INFO L718 BasicCegarLoop]: Path program histogram: [2, 1, 1] [2022-03-18 00:48:28,371 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:48:28,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:48:28 BoogieIcfgContainer [2022-03-18 00:48:28,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:48:28,390 INFO L158 Benchmark]: Toolchain (without parser) took 1595.97ms. Allocated memory was 199.2MB in the beginning and 249.6MB in the end (delta: 50.3MB). Free memory was 151.4MB in the beginning and 205.0MB in the end (delta: -53.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:48:28,390 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:48:28,391 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.34ms. Allocated memory is still 199.2MB. Free memory was 151.1MB in the beginning and 176.3MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 00:48:28,391 INFO L158 Benchmark]: Boogie Preprocessor took 21.81ms. Allocated memory is still 199.2MB. Free memory was 176.3MB in the beginning and 174.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 00:48:28,391 INFO L158 Benchmark]: RCFGBuilder took 204.20ms. Allocated memory is still 199.2MB. Free memory was 174.9MB in the beginning and 165.3MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 00:48:28,391 INFO L158 Benchmark]: TraceAbstraction took 1207.25ms. Allocated memory was 199.2MB in the beginning and 249.6MB in the end (delta: 50.3MB). Free memory was 164.9MB in the beginning and 205.0MB in the end (delta: -40.2MB). Peak memory consumption was 10.6MB. Max. memory is 8.0GB. [2022-03-18 00:48:28,392 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 199.2MB. Free memory is still 167.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.34ms. Allocated memory is still 199.2MB. Free memory was 151.1MB in the beginning and 176.3MB in the end (delta: -25.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.81ms. Allocated memory is still 199.2MB. Free memory was 176.3MB in the beginning and 174.9MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 204.20ms. Allocated memory is still 199.2MB. Free memory was 174.9MB in the beginning and 165.3MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1207.25ms. Allocated memory was 199.2MB in the beginning and 249.6MB in the end (delta: 50.3MB). Free memory was 164.9MB in the beginning and 205.0MB in the end (delta: -40.2MB). Peak memory consumption was 10.6MB. 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 - PositiveResult [Line: 14]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 44 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 43 mSDsluCounter, 71 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 48 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 119 IncrementalHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 23 mSDtfsCounter, 119 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 39 PreInvPairs, 60 NumberOfFragments, 85 HoareAnnotationTreeSize, 39 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 21 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: i <= 3 * (i / 3) && 0 <= i - ProcedureContractResult [Line: 20]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 12]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-03-18 00:48:28,421 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...