/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/loop-new/count_by_1_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-6c470ae [2022-02-15 01:38:37,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-15 01:38:37,688 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-15 01:38:37,750 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-15 01:38:37,787 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-02-15 01:38:37,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-15 01:38:37,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-15 01:38:37,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-15 01:38:37,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-15 01:38:37,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-15 01:38:37,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-15 01:38:37,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-15 01:38:37,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-15 01:38:37,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-15 01:38:37,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:38:37,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-15 01:38:37,800 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-02-15 01:38:37,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-15 01:38:37,998 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-15 01:38:38,017 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-15 01:38:38,019 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-15 01:38:38,020 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-15 01:38:38,020 INFO L275 PluginConnector]: CDTParser initialized [2022-02-15 01:38:38,021 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-02-15 01:38:38,072 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86742eba6/56735b3a68d64845a7ab2cf3ff0f94f8/FLAGcb4580272 [2022-02-15 01:38:38,356 INFO L306 CDTParser]: Found 1 translation units. [2022-02-15 01:38:38,356 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-new/count_by_1_variant.i [2022-02-15 01:38:38,360 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86742eba6/56735b3a68d64845a7ab2cf3ff0f94f8/FLAGcb4580272 [2022-02-15 01:38:38,795 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/86742eba6/56735b3a68d64845a7ab2cf3ff0f94f8 [2022-02-15 01:38:38,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-15 01:38:38,797 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-15 01:38:38,798 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-15 01:38:38,798 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-15 01:38:38,813 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-15 01:38:38,813 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,814 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50bb9928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38, skipping insertion in model container [2022-02-15 01:38:38,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-15 01:38:38,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-15 01:38:38,920 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-new/count_by_1_variant.i[891,904] [2022-02-15 01:38:38,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:38:38,941 INFO L203 MainTranslator]: Completed pre-run [2022-02-15 01:38:38,948 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-new/count_by_1_variant.i[891,904] [2022-02-15 01:38:38,949 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-15 01:38:38,957 INFO L208 MainTranslator]: Completed translation [2022-02-15 01:38:38,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38 WrapperNode [2022-02-15 01:38:38,958 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-15 01:38:38,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-15 01:38:38,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-15 01:38:38,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-15 01:38:38,965 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,971 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,973 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,974 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,974 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-15 01:38:38,975 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-15 01:38:38,975 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-15 01:38:38,975 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-15 01:38:38,976 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (1/1) ... [2022-02-15 01:38:38,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-15 01:38:38,990 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-15 01:38:38,998 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) [2022-02-15 01:38:39,011 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 [2022-02-15 01:38:39,021 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-15 01:38:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-15 01:38:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-15 01:38:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-15 01:38:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-15 01:38:39,033 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-15 01:38:39,033 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-15 01:38:39,034 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-15 01:38:39,080 INFO L234 CfgBuilder]: Building ICFG [2022-02-15 01:38:39,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-15 01:38:39,154 INFO L275 CfgBuilder]: Performing block encoding [2022-02-15 01:38:39,158 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-15 01:38:39,158 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-15 01:38:39,159 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:38:39 BoogieIcfgContainer [2022-02-15 01:38:39,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-15 01:38:39,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-15 01:38:39,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-15 01:38:39,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-15 01:38:39,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.02 01:38:38" (1/3) ... [2022-02-15 01:38:39,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75358512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:38:39, skipping insertion in model container [2022-02-15 01:38:39,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.02 01:38:38" (2/3) ... [2022-02-15 01:38:39,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75358512 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.02 01:38:39, skipping insertion in model container [2022-02-15 01:38:39,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.02 01:38:39" (3/3) ... [2022-02-15 01:38:39,166 INFO L111 eAbstractionObserver]: Analyzing ICFG count_by_1_variant.i [2022-02-15 01:38:39,169 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-02-15 01:38:39,170 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-15 01:38:39,197 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-15 01:38:39,201 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=AcceleratedInterpolation, 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, mLoopAccelerationTechnique=JORDAN [2022-02-15 01:38:39,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-15 01:38:39,210 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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) [2022-02-15 01:38:39,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-15 01:38:39,214 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:38:39,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:38:39,215 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:38:39,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:38:39,218 INFO L85 PathProgramCache]: Analyzing trace with hash 1307585362, now seen corresponding path program 1 times [2022-02-15 01:38:39,223 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:38:39,224 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1179385443] [2022-02-15 01:38:39,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:38:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:38:39,270 INFO L274 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-02-15 01:38:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:39,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:38:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:38:39,470 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:38:39,471 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1179385443] [2022-02-15 01:38:39,472 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1179385443] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:38:39,472 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:38:39,472 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-15 01:38:39,473 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230849554] [2022-02-15 01:38:39,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:38:39,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-15 01:38:39,476 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:38:39,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-15 01:38:39,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-02-15 01:38:39,512 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 13 states have internal predecessors, (16), 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 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-02-15 01:38:39,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:38:39,643 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2022-02-15 01:38:39,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-02-15 01:38:39,645 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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 11 [2022-02-15 01:38:39,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:38:39,650 INFO L225 Difference]: With dead ends: 41 [2022-02-15 01:38:39,650 INFO L226 Difference]: Without dead ends: 22 [2022-02-15 01:38:39,653 INFO L932 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 [2022-02-15 01:38:39,657 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-15 01:38:39,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-15 01:38:39,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-15 01:38:39,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-02-15 01:38:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 14 states have internal predecessors, (14), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-15 01:38:39,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-02-15 01:38:39,691 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 11 [2022-02-15 01:38:39,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:38:39,691 INFO L470 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-02-15 01:38:39,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 4 states have internal predecessors, (7), 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) [2022-02-15 01:38:39,692 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-02-15 01:38:39,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-02-15 01:38:39,693 INFO L506 BasicCegarLoop]: Found error trace [2022-02-15 01:38:39,693 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-15 01:38:39,693 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-15 01:38:39,695 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-15 01:38:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-15 01:38:39,695 INFO L85 PathProgramCache]: Analyzing trace with hash 2000663987, now seen corresponding path program 1 times [2022-02-15 01:38:39,695 INFO L126 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2022-02-15 01:38:39,695 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413038132] [2022-02-15 01:38:39,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-15 01:38:39,827 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-02-15 01:38:39,827 INFO L262 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-02-15 01:38:39,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-15 01:38:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:39,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-15 01:38:39,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-15 01:38:39,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-15 01:38:40,110 INFO L144 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found an infeasible trace [2022-02-15 01:38:40,111 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413038132] [2022-02-15 01:38:40,112 INFO L165 FreeRefinementEngine]: IpTcStrategyModulePreferences [1413038132] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-15 01:38:40,112 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-15 01:38:40,112 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-02-15 01:38:40,112 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172477147] [2022-02-15 01:38:40,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-15 01:38:40,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-15 01:38:40,113 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2022-02-15 01:38:40,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-15 01:38:40,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-02-15 01:38:40,115 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 01:38:40,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-15 01:38:40,197 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-02-15 01:38:40,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-02-15 01:38:40,197 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-02-15 01:38:40,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-15 01:38:40,198 INFO L225 Difference]: With dead ends: 22 [2022-02-15 01:38:40,198 INFO L226 Difference]: Without dead ends: 0 [2022-02-15 01:38:40,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 3 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-02-15 01:38:40,199 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 8 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 11 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-15 01:38:40,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 40 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 24 Invalid, 0 Unknown, 11 Unchecked, 0.0s Time] [2022-02-15 01:38:40,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-02-15 01:38:40,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-02-15 01:38:40,200 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) [2022-02-15 01:38:40,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-02-15 01:38:40,201 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2022-02-15 01:38:40,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-15 01:38:40,201 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-02-15 01:38:40,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.2) internal successors, (12), 8 states have internal predecessors, (12), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-02-15 01:38:40,201 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-02-15 01:38:40,201 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-02-15 01:38:40,203 INFO L764 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-15 01:38:40,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-15 01:38:40,204 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-02-15 01:38:40,326 INFO L858 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-02-15 01:38:40,327 INFO L858 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-02-15 01:38:40,327 INFO L861 garLoopResultBuilder]: At program point mainENTRY(lines 24 30) the Hoare annotation is: true [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point L27-1(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point mainEXIT(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point L26-2(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000001) [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point L26-3(lines 26 28) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-15 01:38:40,327 INFO L854 garLoopResultBuilder]: At program point mainFINAL(lines 24 30) the Hoare annotation is: (<= main_~i~0 1000000) [2022-02-15 01:38:40,327 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L854 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L854 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (= v_main_~i~0_BEFORE_CALL_1 1000000) (let ((.cse0 (<= v_main_~i~0_BEFORE_CALL_1 1000000))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (and (or (<= 1000001 v_main_~i~0_BEFORE_CALL_1) (not (< 0 v_main_~i~0_BEFORE_CALL_1))) (not (= v_main_~i~0_BEFORE_CALL_1 0)))))) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-02-15 01:38:40,328 INFO L861 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-02-15 01:38:40,328 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (= v_main_~i~0_BEFORE_CALL_1 1000000) (let ((.cse0 (<= v_main_~i~0_BEFORE_CALL_1 1000000))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (and (or (<= 1000001 v_main_~i~0_BEFORE_CALL_1) (not (< 0 v_main_~i~0_BEFORE_CALL_1))) (not (= v_main_~i~0_BEFORE_CALL_1 0)))))) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-02-15 01:38:40,329 INFO L854 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-15 01:38:40,329 INFO L854 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-02-15 01:38:40,329 INFO L854 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (and (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (forall ((v_main_~i~0_BEFORE_CALL_1 Int)) (or (= v_main_~i~0_BEFORE_CALL_1 1000000) (let ((.cse0 (<= v_main_~i~0_BEFORE_CALL_1 1000000))) (and (or (not (= |__VERIFIER_assert_#in~cond| 1)) (not .cse0)) (or (not (= |__VERIFIER_assert_#in~cond| 0)) .cse0))) (and (or (<= 1000001 v_main_~i~0_BEFORE_CALL_1) (not (< 0 v_main_~i~0_BEFORE_CALL_1))) (not (= v_main_~i~0_BEFORE_CALL_1 0)))))) (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0)))) [2022-02-15 01:38:40,331 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-15 01:38:40,332 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-15 01:38:40,341 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,341 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,341 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,341 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,341 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,342 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.02 01:38:40 BoogieIcfgContainer [2022-02-15 01:38:40,342 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-15 01:38:40,343 INFO L158 Benchmark]: Toolchain (without parser) took 1545.37ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 129.0MB in the beginning and 178.4MB in the end (delta: -49.4MB). There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 01:38:40,343 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-15 01:38:40,343 INFO L158 Benchmark]: CACSL2BoogieTranslator took 159.65ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 156.0MB in the end (delta: -27.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-02-15 01:38:40,344 INFO L158 Benchmark]: Boogie Preprocessor took 16.13ms. Allocated memory is still 176.2MB. Free memory was 156.0MB in the beginning and 154.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-15 01:38:40,344 INFO L158 Benchmark]: RCFGBuilder took 184.27ms. Allocated memory is still 176.2MB. Free memory was 154.3MB in the beginning and 144.6MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-15 01:38:40,344 INFO L158 Benchmark]: TraceAbstraction took 1182.27ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 144.2MB in the beginning and 178.4MB in the end (delta: -34.2MB). Peak memory consumption was 15.6MB. Max. memory is 8.0GB. [2022-02-15 01:38:40,346 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 176.2MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 159.65ms. Allocated memory is still 176.2MB. Free memory was 128.8MB in the beginning and 156.0MB in the end (delta: -27.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.13ms. Allocated memory is still 176.2MB. Free memory was 156.0MB in the beginning and 154.7MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 184.27ms. Allocated memory is still 176.2MB. Free memory was 154.3MB in the beginning and 144.6MB in the end (delta: 9.7MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1182.27ms. Allocated memory was 176.2MB in the beginning and 224.4MB in the end (delta: 48.2MB). Free memory was 144.2MB in the beginning and 178.4MB in the end (delta: -34.2MB). Peak memory consumption was 15.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] * 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: 19]: 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, 27 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 34 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 33 mSDsluCounter, 75 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 11 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 71 IncrementalHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 22 mSDtfsCounter, 71 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 8 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=1, InterpolantAutomatonStates: 18, 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, 20 LocationsWithAnnotation, 32 PreInvPairs, 47 NumberOfFragments, 186 HoareAnnotationTreeSize, 32 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 340 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: 26]: Loop Invariant Derived loop invariant: i <= 1000001 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: i <= 1000000 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert [2022-02-15 01:38:40,355 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,355 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,355 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,355 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,355 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] [2022-02-15 01:38:40,356 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~i~0_BEFORE_CALL_1,QUANTIFIED] Derived contract for procedure __VERIFIER_assert: (\old(cond) == cond || (forall v_main_~i~0_BEFORE_CALL_1 : int :: (v_main_~i~0_BEFORE_CALL_1 == 1000000 || ((!(\old(cond) == 1) || !(v_main_~i~0_BEFORE_CALL_1 <= 1000000)) && (!(\old(cond) == 0) || v_main_~i~0_BEFORE_CALL_1 <= 1000000))) || ((1000001 <= v_main_~i~0_BEFORE_CALL_1 || !(0 < v_main_~i~0_BEFORE_CALL_1)) && !(v_main_~i~0_BEFORE_CALL_1 == 0)))) && (\old(cond) == 0 || !(cond == 0)) RESULT: Ultimate proved your program to be correct! [2022-02-15 01:38:40,379 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...