/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark33_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 19:15:35,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 19:15:35,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 19:15:35,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 19:15:35,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 19:15:35,504 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 19:15:35,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 19:15:35,506 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 19:15:35,511 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 19:15:35,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 19:15:35,512 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 19:15:35,513 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 19:15:35,514 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 19:15:35,514 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 19:15:35,514 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 19:15:35,515 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 19:15:35,515 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 19:15:35,515 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 19:15:35,515 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 19:15:35,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 19:15:35,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 19:15:35,723 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 19:15:35,724 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 19:15:35,724 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 19:15:35,725 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2022-03-20 19:15:35,761 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb5a6482/d5b8dfc2a634416f8075585754b2aa9b/FLAGc3d64e73b [2022-03-20 19:15:36,077 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 19:15:36,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark33_linear.i [2022-03-20 19:15:36,083 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb5a6482/d5b8dfc2a634416f8075585754b2aa9b/FLAGc3d64e73b [2022-03-20 19:15:36,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/edb5a6482/d5b8dfc2a634416f8075585754b2aa9b [2022-03-20 19:15:36,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 19:15:36,502 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 19:15:36,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 19:15:36,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 19:15:36,506 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 19:15:36,506 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,507 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69da9afe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36, skipping insertion in model container [2022-03-20 19:15:36,507 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 19:15:36,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 19:15:36,641 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark33_linear.i[868,881] [2022-03-20 19:15:36,649 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 19:15:36,656 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 19:15:36,664 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark33_linear.i[868,881] [2022-03-20 19:15:36,666 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 19:15:36,675 INFO L208 MainTranslator]: Completed translation [2022-03-20 19:15:36,675 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36 WrapperNode [2022-03-20 19:15:36,676 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 19:15:36,676 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 19:15:36,676 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 19:15:36,676 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 19:15:36,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,685 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,690 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,691 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,694 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,696 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,701 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,702 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 19:15:36,703 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 19:15:36,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 19:15:36,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 19:15:36,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (1/1) ... [2022-03-20 19:15:36,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 19:15:36,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 19:15:36,729 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 19:15:36,760 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 19:15:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 19:15:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 19:15:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 19:15:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 19:15:36,776 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 19:15:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 19:15:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 19:15:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 19:15:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 19:15:36,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 19:15:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 19:15:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-20 19:15:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 19:15:36,778 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 19:15:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 19:15:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 19:15:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 19:15:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 19:15:36,779 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 19:15:36,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 19:15:36,831 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 19:15:36,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 19:15:36,904 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 19:15:36,908 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 19:15:36,908 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 19:15:36,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:15:36 BoogieIcfgContainer [2022-03-20 19:15:36,909 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 19:15:36,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 19:15:36,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 19:15:36,917 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 19:15:36,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:15:36" (1/3) ... [2022-03-20 19:15:36,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b059ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:15:36, skipping insertion in model container [2022-03-20 19:15:36,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:15:36" (2/3) ... [2022-03-20 19:15:36,918 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37b059ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:15:36, skipping insertion in model container [2022-03-20 19:15:36,918 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:15:36" (3/3) ... [2022-03-20 19:15:36,919 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark33_linear.i [2022-03-20 19:15:36,928 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 19:15:36,928 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 19:15:36,957 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 19:15:36,961 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 19:15:36,962 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 19:15:36,970 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 19:15:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 19:15:36,975 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 19:15:36,975 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 19:15:36,975 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 19:15:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 19:15:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-03-20 19:15:36,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 19:15:36,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [780887275] [2022-03-20 19:15:36,991 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 19:15:36,992 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 2 times [2022-03-20 19:15:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 19:15:36,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400900615] [2022-03-20 19:15:36,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 19:15:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 19:15:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:15:37,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 19:15:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:15:37,151 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 19:15:37,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 19:15:37,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400900615] [2022-03-20 19:15:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400900615] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:15:37,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:15:37,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 19:15:37,154 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 19:15:37,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [780887275] [2022-03-20 19:15:37,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [780887275] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:15:37,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:15:37,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 19:15:37,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313449573] [2022-03-20 19:15:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 19:15:37,158 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 19:15:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 19:15:37,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 19:15:37,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-03-20 19:15:37,176 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 19:15:37,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 19:15:37,286 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-20 19:15:37,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 19:15:37,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 19:15:37,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 19:15:37,291 INFO L225 Difference]: With dead ends: 32 [2022-03-20 19:15:37,291 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 19:15:37,293 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-03-20 19:15:37,295 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 17 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 19:15:37,296 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 43 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 19:15:37,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 19:15:37,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 19:15:37,312 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) [2022-03-20 19:15:37,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 19:15:37,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-03-20 19:15:37,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 19:15:37,313 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 19:15:37,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 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 19:15:37,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 19:15:37,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 19:15:37,315 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 19:15:37,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 19:15:37,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 19:15:37,368 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-03-20 19:15:37,368 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-03-20 19:15:37,368 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-03-20 19:15:37,368 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 27) the Hoare annotation is: true [2022-03-20 19:15:37,369 INFO L878 garLoopResultBuilder]: At program point L25(line 25) the Hoare annotation is: (< 99 main_~x~0) [2022-03-20 19:15:37,369 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 27) the Hoare annotation is: true [2022-03-20 19:15:37,369 INFO L885 garLoopResultBuilder]: At program point L21(line 21) the Hoare annotation is: true [2022-03-20 19:15:37,369 INFO L878 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (< 0 (+ main_~x~0 1)) [2022-03-20 19:15:37,369 INFO L878 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (< 99 main_~x~0) [2022-03-20 19:15:37,369 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 27) the Hoare annotation is: true [2022-03-20 19:15:37,369 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 19:15:37,370 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 19:15:37,370 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 19:15:37,370 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:15:37,371 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-20 19:15:37,371 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:15:37,371 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:15:37,371 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 19:15:37,373 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-03-20 19:15:37,374 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 19:15:37,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 07:15:37 BoogieIcfgContainer [2022-03-20 19:15:37,383 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 19:15:37,384 INFO L158 Benchmark]: Toolchain (without parser) took 882.24ms. Allocated memory is still 213.9MB. Free memory was 161.5MB in the beginning and 142.7MB in the end (delta: 18.7MB). Peak memory consumption was 18.3MB. Max. memory is 8.0GB. [2022-03-20 19:15:37,384 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 213.9MB. Free memory was 177.5MB in the beginning and 177.4MB in the end (delta: 76.7kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 19:15:37,385 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.22ms. Allocated memory is still 213.9MB. Free memory was 161.2MB in the beginning and 186.5MB in the end (delta: -25.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-03-20 19:15:37,385 INFO L158 Benchmark]: Boogie Preprocessor took 26.56ms. Allocated memory is still 213.9MB. Free memory was 186.5MB in the beginning and 185.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 19:15:37,386 INFO L158 Benchmark]: RCFGBuilder took 205.98ms. Allocated memory is still 213.9MB. Free memory was 185.2MB in the beginning and 175.5MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 19:15:37,386 INFO L158 Benchmark]: TraceAbstraction took 472.95ms. Allocated memory is still 213.9MB. Free memory was 175.0MB in the beginning and 142.7MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. Max. memory is 8.0GB. [2022-03-20 19:15:37,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 213.9MB. Free memory was 177.5MB in the beginning and 177.4MB in the end (delta: 76.7kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.22ms. Allocated memory is still 213.9MB. Free memory was 161.2MB in the beginning and 186.5MB in the end (delta: -25.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.56ms. Allocated memory is still 213.9MB. Free memory was 186.5MB in the beginning and 185.2MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 205.98ms. Allocated memory is still 213.9MB. Free memory was 185.2MB in the beginning and 175.5MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 472.95ms. Allocated memory is still 213.9MB. Free memory was 175.0MB in the beginning and 142.7MB in the end (delta: 32.2MB). Peak memory consumption was 31.5MB. 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: 16]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 16 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 36 NumberOfFragments, 59 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 < x + 1 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-03-20 19:15:37,413 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...