/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-invgen/NetBSD_loop.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 00:16:57,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 00:16:57,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 00:16:57,741 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 00:16:57,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 00:16:57,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 00:16:57,802 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 00:16:57,803 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 00:16:57,817 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 00:16:57,817 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 00:16:57,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 00:16:57,820 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 00:16:57,821 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 00:16:57,821 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 00:16:57,821 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 00:16:57,821 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:57,822 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 00:16:57,822 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 00:16:57,823 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 00:16:57,823 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 00:16:58,116 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 00:16:58,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 00:16:58,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 00:16:58,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 00:16:58,154 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 00:16:58,156 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2022-03-18 00:16:58,218 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34c8864d/feb68588fdb44ceca1be0b3698c2f0b0/FLAGdb209de18 [2022-03-18 00:16:58,700 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 00:16:58,700 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/NetBSD_loop.i [2022-03-18 00:16:58,707 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34c8864d/feb68588fdb44ceca1be0b3698c2f0b0/FLAGdb209de18 [2022-03-18 00:16:58,728 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b34c8864d/feb68588fdb44ceca1be0b3698c2f0b0 [2022-03-18 00:16:58,731 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 00:16:58,733 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 00:16:58,736 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:58,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 00:16:58,740 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 00:16:58,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:58,742 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@35ea6eb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58, skipping insertion in model container [2022-03-18 00:16:58,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:58,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 00:16:58,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 00:16:58,938 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-invgen/NetBSD_loop.i[893,906] [2022-03-18 00:16:58,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:58,959 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 00:16:58,971 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-invgen/NetBSD_loop.i[893,906] [2022-03-18 00:16:58,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 00:16:58,994 INFO L208 MainTranslator]: Completed translation [2022-03-18 00:16:58,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58 WrapperNode [2022-03-18 00:16:58,995 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 00:16:58,996 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 00:16:58,996 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 00:16:58,997 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 00:16:59,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,007 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,014 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,025 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,030 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,033 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 00:16:59,040 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 00:16:59,040 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 00:16:59,040 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 00:16:59,041 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (1/1) ... [2022-03-18 00:16:59,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 00:16:59,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 00:16:59,077 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 00:16:59,100 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 00:16:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 00:16:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 00:16:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 00:16:59,118 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 00:16:59,119 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 00:16:59,119 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 00:16:59,119 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 00:16:59,120 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 00:16:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 00:16:59,121 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 00:16:59,122 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 00:16:59,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 00:16:59,204 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 00:16:59,205 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 00:16:59,338 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 00:16:59,344 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 00:16:59,344 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 00:16:59,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:59 BoogieIcfgContainer [2022-03-18 00:16:59,346 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 00:16:59,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 00:16:59,348 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 00:16:59,351 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 00:16:59,351 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 12:16:58" (1/3) ... [2022-03-18 00:16:59,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c40e737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:59, skipping insertion in model container [2022-03-18 00:16:59,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 12:16:58" (2/3) ... [2022-03-18 00:16:59,353 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c40e737 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 12:16:59, skipping insertion in model container [2022-03-18 00:16:59,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 12:16:59" (3/3) ... [2022-03-18 00:16:59,354 INFO L111 eAbstractionObserver]: Analyzing ICFG NetBSD_loop.i [2022-03-18 00:16:59,373 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 00:16:59,374 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 00:16:59,430 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 00:16:59,441 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 00:16:59,441 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 00:16:59,460 INFO L276 IsEmpty]: Start isEmpty. Operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 00:16:59,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-18 00:16:59,478 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:16:59,479 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:16:59,479 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:16:59,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:16:59,488 INFO L85 PathProgramCache]: Analyzing trace with hash -390730657, now seen corresponding path program 1 times [2022-03-18 00:16:59,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:59,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [236479924] [2022-03-18 00:16:59,511 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:16:59,511 INFO L85 PathProgramCache]: Analyzing trace with hash -390730657, now seen corresponding path program 2 times [2022-03-18 00:16:59,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:16:59,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485656327] [2022-03-18 00:16:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:16:59,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:16:59,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:59,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:16:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:16:59,782 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 00:16:59,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:16:59,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485656327] [2022-03-18 00:16:59,783 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485656327] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:59,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:59,784 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:16:59,786 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:16:59,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [236479924] [2022-03-18 00:16:59,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [236479924] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:16:59,788 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:16:59,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 00:16:59,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026344683] [2022-03-18 00:16:59,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:16:59,793 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 00:16:59,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:16:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 00:16:59,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 00:16:59,825 INFO L87 Difference]: Start difference. First operand has 23 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 states have internal predecessors, (19), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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 00:17:00,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:17:00,015 INFO L93 Difference]: Finished difference Result 45 states and 54 transitions. [2022-03-18 00:17:00,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 00:17:00,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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 13 [2022-03-18 00:17:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:17:00,027 INFO L225 Difference]: With dead ends: 45 [2022-03-18 00:17:00,028 INFO L226 Difference]: Without dead ends: 22 [2022-03-18 00:17:00,030 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 00:17:00,034 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:17:00,035 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 42 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:17:00,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-03-18 00:17:00,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-03-18 00:17:00,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-18 00:17:00,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-03-18 00:17:00,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2022-03-18 00:17:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:17:00,068 INFO L478 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-03-18 00:17:00,068 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 4 states have internal predecessors, (9), 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 00:17:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-03-18 00:17:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-18 00:17:00,069 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:17:00,069 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:17:00,069 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 00:17:00,070 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:17:00,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:17:00,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1367367025, now seen corresponding path program 1 times [2022-03-18 00:17:00,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:17:00,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [206081805] [2022-03-18 00:17:00,072 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 00:17:00,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1367367025, now seen corresponding path program 2 times [2022-03-18 00:17:00,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:17:00,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891473897] [2022-03-18 00:17:00,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:17:00,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:17:00,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:17:00,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-03-18 00:17:00,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,161 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:17:00,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:17:00,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891473897] [2022-03-18 00:17:00,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891473897] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:17:00,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:17:00,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:17:00,163 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:17:00,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [206081805] [2022-03-18 00:17:00,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [206081805] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:17:00,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:17:00,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:17:00,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640554737] [2022-03-18 00:17:00,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:17:00,164 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-18 00:17:00,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:17:00,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-18 00:17:00,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-18 00:17:00,165 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:17:00,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:17:00,356 INFO L93 Difference]: Finished difference Result 32 states and 33 transitions. [2022-03-18 00:17:00,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-18 00:17:00,357 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-03-18 00:17:00,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:17:00,358 INFO L225 Difference]: With dead ends: 32 [2022-03-18 00:17:00,359 INFO L226 Difference]: Without dead ends: 30 [2022-03-18 00:17:00,359 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2022-03-18 00:17:00,361 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 19 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:17:00,361 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 37 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 00:17:00,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-18 00:17:00,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2022-03-18 00:17:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 19 states have internal predecessors, (19), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 00:17:00,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-03-18 00:17:00,374 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 18 [2022-03-18 00:17:00,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:17:00,374 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-03-18 00:17:00,374 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 00:17:00,374 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-03-18 00:17:00,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-03-18 00:17:00,376 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 00:17:00,376 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 00:17:00,376 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 00:17:00,377 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 00:17:00,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 00:17:00,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1382920975, now seen corresponding path program 1 times [2022-03-18 00:17:00,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 00:17:00,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [784047606] [2022-03-18 00:17:00,524 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-18 00:17:00,525 INFO L85 PathProgramCache]: Analyzing trace with hash -777149182, now seen corresponding path program 1 times [2022-03-18 00:17:00,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 00:17:00,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021228355] [2022-03-18 00:17:00,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 00:17:00,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 00:17:00,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 00:17:00,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-03-18 00:17:00,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 00:17:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 00:17:00,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 00:17:00,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021228355] [2022-03-18 00:17:00,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021228355] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:17:00,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:17:00,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-18 00:17:01,038 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 00:17:01,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [784047606] [2022-03-18 00:17:01,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [784047606] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 00:17:01,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 00:17:01,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-18 00:17:01,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182574943] [2022-03-18 00:17:01,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 00:17:01,040 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-03-18 00:17:01,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 00:17:01,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-03-18 00:17:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-03-18 00:17:01,044 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 00:17:01,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 00:17:01,250 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2022-03-18 00:17:01,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-18 00:17:01,251 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 30 [2022-03-18 00:17:01,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 00:17:01,251 INFO L225 Difference]: With dead ends: 33 [2022-03-18 00:17:01,251 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 00:17:01,252 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=111, Invalid=441, Unknown=0, NotChecked=0, Total=552 [2022-03-18 00:17:01,253 INFO L912 BasicCegarLoop]: 11 mSDtfsCounter, 23 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 7 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 00:17:01,254 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 58 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 59 Invalid, 0 Unknown, 7 Unchecked, 0.1s Time] [2022-03-18 00:17:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 00:17:01,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 00:17:01,255 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 00:17:01,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 00:17:01,255 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2022-03-18 00:17:01,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 00:17:01,256 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 00:17:01,256 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 11 states have internal predecessors, (20), 4 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 00:17:01,256 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 00:17:01,256 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 00:17:01,261 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 00:17:01,261 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 00:17:01,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 00:17:01,445 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2022-03-18 00:17:01,449 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2022-03-18 00:17:01,449 INFO L882 garLoopResultBuilder]: For program point L12-1(line 12) no Hoare annotation was computed. [2022-03-18 00:17:01,449 INFO L882 garLoopResultBuilder]: For program point L15(line 15) no Hoare annotation was computed. [2022-03-18 00:17:01,449 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:17:01,450 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:17:01,450 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2022-03-18 00:17:01,450 INFO L885 garLoopResultBuilder]: At program point L33(line 33) the Hoare annotation is: true [2022-03-18 00:17:01,450 INFO L878 garLoopResultBuilder]: At program point L33-1(line 33) the Hoare annotation is: (<= 1 main_~MAXPATHLEN~0) [2022-03-18 00:17:01,450 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 24 45) the Hoare annotation is: true [2022-03-18 00:17:01,450 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 24 45) the Hoare annotation is: true [2022-03-18 00:17:01,451 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 24 45) the Hoare annotation is: true [2022-03-18 00:17:01,451 INFO L885 garLoopResultBuilder]: At program point L44(lines 25 45) the Hoare annotation is: true [2022-03-18 00:17:01,451 INFO L878 garLoopResultBuilder]: At program point L42(lines 38 43) the Hoare annotation is: (and (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2022-03-18 00:17:01,451 INFO L878 garLoopResultBuilder]: At program point L41(line 41) the Hoare annotation is: (and (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2022-03-18 00:17:01,451 INFO L878 garLoopResultBuilder]: At program point L41-1(line 41) the Hoare annotation is: (and (<= (+ main_~glob2_p_off~0 1) main_~MAXPATHLEN~0) (<= 0 main_~glob2_p_off~0)) [2022-03-18 00:17:01,451 INFO L878 garLoopResultBuilder]: At program point L38-2(lines 38 43) the Hoare annotation is: (and (<= 1 main_~MAXPATHLEN~0) (< main_~glob2_p_off~0 (+ main_~MAXPATHLEN~0 1)) (<= 0 main_~glob2_p_off~0)) [2022-03-18 00:17:01,451 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,452 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|)) [2022-03-18 00:17:01,452 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,452 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,453 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,453 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,453 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 00:17:01,453 INFO L878 garLoopResultBuilder]: At program point L18-2(lines 17 22) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:17:01,453 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2022-03-18 00:17:01,453 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 17 22) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:17:01,454 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2022-03-18 00:17:01,454 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) the Hoare annotation is: (not (= |__VERIFIER_assert_#in~cond| 1)) [2022-03-18 00:17:01,454 INFO L878 garLoopResultBuilder]: At program point L18(lines 18 20) the Hoare annotation is: (or (not (= |__VERIFIER_assert_#in~cond| 1)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) [2022-03-18 00:17:01,458 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-03-18 00:17:01,459 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 00:17:01,484 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 12:17:01 BoogieIcfgContainer [2022-03-18 00:17:01,484 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 00:17:01,486 INFO L158 Benchmark]: Toolchain (without parser) took 2751.15ms. Allocated memory was 175.1MB in the beginning and 215.0MB in the end (delta: 39.8MB). Free memory was 126.3MB in the beginning and 163.5MB in the end (delta: -37.1MB). Peak memory consumption was 2.8MB. Max. memory is 8.0GB. [2022-03-18 00:17:01,486 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 175.1MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 00:17:01,487 INFO L158 Benchmark]: CACSL2BoogieTranslator took 258.78ms. Allocated memory is still 175.1MB. Free memory was 126.2MB in the beginning and 151.4MB in the end (delta: -25.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. [2022-03-18 00:17:01,487 INFO L158 Benchmark]: Boogie Preprocessor took 43.32ms. Allocated memory is still 175.1MB. Free memory was 151.4MB in the beginning and 150.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 00:17:01,487 INFO L158 Benchmark]: RCFGBuilder took 306.02ms. Allocated memory is still 175.1MB. Free memory was 150.2MB in the beginning and 139.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 00:17:01,488 INFO L158 Benchmark]: TraceAbstraction took 2136.45ms. Allocated memory was 175.1MB in the beginning and 215.0MB in the end (delta: 39.8MB). Free memory was 138.8MB in the beginning and 163.5MB in the end (delta: -24.6MB). Peak memory consumption was 16.0MB. Max. memory is 8.0GB. [2022-03-18 00:17:01,489 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 175.1MB. Free memory is still 142.8MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 258.78ms. Allocated memory is still 175.1MB. Free memory was 126.2MB in the beginning and 151.4MB in the end (delta: -25.2MB). Peak memory consumption was 10.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 43.32ms. Allocated memory is still 175.1MB. Free memory was 151.4MB in the beginning and 150.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 306.02ms. Allocated memory is still 175.1MB. Free memory was 150.2MB in the beginning and 139.3MB in the end (delta: 10.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2136.45ms. Allocated memory was 175.1MB in the beginning and 215.0MB in the end (delta: 39.8MB). Free memory was 138.8MB in the beginning and 163.5MB in the end (delta: -24.6MB). Peak memory consumption was 16.0MB. 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: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 67 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 67 mSDsluCounter, 137 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 54 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 191 IncrementalHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 54 mSolverCounterUnsat, 47 mSDtfsCounter, 191 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 63 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 27, 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 53 PreInvPairs, 75 NumberOfFragments, 93 HoareAnnotationTreeSize, 53 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 504 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: 38]: Loop Invariant Derived loop invariant: (1 <= MAXPATHLEN && glob2_p_off < MAXPATHLEN + 1) && 0 <= glob2_p_off - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - ProcedureContractResult [Line: 24]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 17]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: !(\old(cond) == 1) || \old(cond) == cond RESULT: Ultimate proved your program to be correct! [2022-03-18 00:17:01,534 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...