/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-zilu/benchmark43_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 03:07:11,421 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 03:07:11,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 03:07:11,455 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 03:07:11,493 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 03:07:11,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 03:07:11,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 03:07:11,495 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 03:07:11,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 03:07:11,506 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 03:07:11,508 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 03:07:11,508 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 03:07:11,508 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 03:07:11,508 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 03:07:11,508 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 03:07:11,508 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 03:07:11,509 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 03:07:11,509 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 03:07:11,509 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 03:07:11,509 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 03:07:11,509 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 03:07:11,510 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 03:07:11,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 03:07:11,510 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 03:07:11,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 03:07:11,511 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 03:07:11,511 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 03:07:11,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 03:07:11,724 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 03:07:11,726 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 03:07:11,727 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 03:07:11,727 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 03:07:11,728 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark43_conjunctive.i [2022-03-19 03:07:11,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cfb0799/4d0228040fd24f6b93531730c802fddd/FLAGb5321bf78 [2022-03-19 03:07:12,109 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 03:07:12,109 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark43_conjunctive.i [2022-03-19 03:07:12,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cfb0799/4d0228040fd24f6b93531730c802fddd/FLAGb5321bf78 [2022-03-19 03:07:12,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8cfb0799/4d0228040fd24f6b93531730c802fddd [2022-03-19 03:07:12,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 03:07:12,131 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 03:07:12,140 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 03:07:12,140 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 03:07:12,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 03:07:12,143 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,144 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1530918b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12, skipping insertion in model container [2022-03-19 03:07:12,144 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,148 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 03:07:12,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 03:07:12,293 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark43_conjunctive.i[873,886] [2022-03-19 03:07:12,302 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 03:07:12,308 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 03:07:12,317 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark43_conjunctive.i[873,886] [2022-03-19 03:07:12,319 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 03:07:12,328 INFO L208 MainTranslator]: Completed translation [2022-03-19 03:07:12,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12 WrapperNode [2022-03-19 03:07:12,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 03:07:12,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 03:07:12,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 03:07:12,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 03:07:12,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,343 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,346 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 03:07:12,347 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 03:07:12,347 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 03:07:12,347 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 03:07:12,348 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (1/1) ... [2022-03-19 03:07:12,353 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 03:07:12,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 03:07:12,369 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) [2022-03-19 03:07:12,370 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 [2022-03-19 03:07:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 03:07:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 03:07:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 03:07:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 03:07:12,392 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 03:07:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 03:07:12,392 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 03:07:12,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 03:07:12,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 03:07:12,436 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 03:07:12,438 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 03:07:12,521 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 03:07:12,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 03:07:12,525 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 03:07:12,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 03:07:12 BoogieIcfgContainer [2022-03-19 03:07:12,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 03:07:12,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 03:07:12,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 03:07:12,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 03:07:12,530 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 03:07:12" (1/3) ... [2022-03-19 03:07:12,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611efd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 03:07:12, skipping insertion in model container [2022-03-19 03:07:12,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:07:12" (2/3) ... [2022-03-19 03:07:12,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@611efd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 03:07:12, skipping insertion in model container [2022-03-19 03:07:12,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 03:07:12" (3/3) ... [2022-03-19 03:07:12,532 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark43_conjunctive.i [2022-03-19 03:07:12,535 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 03:07:12,535 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 03:07:12,564 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 03:07:12,569 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 [2022-03-19 03:07:12,569 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 03:07:12,579 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 03:07:12,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 03:07:12,584 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:07:12,584 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:07:12,585 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:07:12,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:07:12,588 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-03-19 03:07:12,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:12,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1759976399] [2022-03-19 03:07:12,602 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 03:07:12,602 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 2 times [2022-03-19 03:07:12,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:07:12,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193230143] [2022-03-19 03:07:12,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:07:12,605 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:07:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:12,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 03:07:12,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:12,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 03:07:12,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 03:07:12,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193230143] [2022-03-19 03:07:12,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193230143] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:12,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:12,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 03:07:12,803 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 03:07:12,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1759976399] [2022-03-19 03:07:12,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1759976399] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:12,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:12,803 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 03:07:12,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132181518] [2022-03-19 03:07:12,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 03:07:12,807 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 03:07:12,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:12,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 03:07:12,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 03:07:12,825 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:07:12,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 03:07:12,877 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2022-03-19 03:07:12,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 03:07:12,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-19 03:07:12,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 03:07:12,884 INFO L225 Difference]: With dead ends: 33 [2022-03-19 03:07:12,884 INFO L226 Difference]: Without dead ends: 14 [2022-03-19 03:07:12,888 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 03:07:12,891 INFO L912 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 03:07:12,892 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 03:07:12,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-03-19 03:07:12,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-03-19 03:07:12,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:07:12,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2022-03-19 03:07:12,919 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2022-03-19 03:07:12,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 03:07:12,919 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2022-03-19 03:07:12,919 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:07:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2022-03-19 03:07:12,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2022-03-19 03:07:12,920 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:07:12,920 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:07:12,921 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 03:07:12,921 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:07:12,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:07:12,923 INFO L85 PathProgramCache]: Analyzing trace with hash -828987386, now seen corresponding path program 1 times [2022-03-19 03:07:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:12,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1805276993] [2022-03-19 03:07:13,077 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-19 03:07:13,079 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 03:07:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 28963623, now seen corresponding path program 1 times [2022-03-19 03:07:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:07:13,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727614720] [2022-03-19 03:07:13,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:07:13,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:07:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 03:07:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 03:07:13,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 03:07:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727614720] [2022-03-19 03:07:13,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727614720] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:13,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:13,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 03:07:15,341 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 03:07:15,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1805276993] [2022-03-19 03:07:15,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1805276993] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:15,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:15,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 03:07:15,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692956462] [2022-03-19 03:07:15,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 03:07:15,342 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 03:07:15,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:15,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 03:07:15,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=53, Unknown=1, NotChecked=0, Total=72 [2022-03-19 03:07:15,343 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-03-19 03:07:19,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 03:07:19,513 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2022-03-19 03:07:19,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-19 03:07:19,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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 [2022-03-19 03:07:19,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 03:07:19,514 INFO L225 Difference]: With dead ends: 20 [2022-03-19 03:07:19,514 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 03:07:19,515 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=38, Invalid=115, Unknown=3, NotChecked=0, Total=156 [2022-03-19 03:07:19,516 INFO L912 BasicCegarLoop]: 10 mSDtfsCounter, 8 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 03:07:19,516 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 32 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 30 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2022-03-19 03:07:19,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 03:07:19,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 03:07:19,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:07:19,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2022-03-19 03:07:19,520 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2022-03-19 03:07:19,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 03:07:19,520 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2022-03-19 03:07:19,521 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 6 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) [2022-03-19 03:07:19,521 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2022-03-19 03:07:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 03:07:19,521 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:07:19,521 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:07:19,521 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 03:07:19,521 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:07:19,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:07:19,522 INFO L85 PathProgramCache]: Analyzing trace with hash 106583640, now seen corresponding path program 2 times [2022-03-19 03:07:19,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:19,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1102177480] [2022-03-19 03:07:19,610 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 0 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-19 03:07:19,611 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 03:07:19,611 INFO L85 PathProgramCache]: Analyzing trace with hash 88068967, now seen corresponding path program 1 times [2022-03-19 03:07:19,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:07:19,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816903649] [2022-03-19 03:07:19,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:07:19,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:07:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 03:07:19,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:07:19,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 03:07:19,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 03:07:19,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816903649] [2022-03-19 03:07:19,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816903649] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:19,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:19,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 03:07:19,764 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 03:07:19,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1102177480] [2022-03-19 03:07:19,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1102177480] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:07:19,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:07:19,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-19 03:07:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469745564] [2022-03-19 03:07:19,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 03:07:19,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 03:07:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 03:07:19,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 03:07:19,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-19 03:07:19,766 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-19 03:07:19,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 03:07:19,833 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2022-03-19 03:07:19,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-19 03:07:19,833 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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 14 [2022-03-19 03:07:19,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 03:07:19,833 INFO L225 Difference]: With dead ends: 15 [2022-03-19 03:07:19,833 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 03:07:19,834 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-03-19 03:07:19,834 INFO L912 BasicCegarLoop]: 8 mSDtfsCounter, 6 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 03:07:19,835 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 30 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 03:07:19,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 03:07:19,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 03:07:19,835 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) [2022-03-19 03:07:19,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 03:07:19,836 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2022-03-19 03:07:19,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 03:07:19,836 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 03:07:19,836 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 5 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) [2022-03-19 03:07:19,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 03:07:19,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 03:07:19,838 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 03:07:19,838 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 03:07:19,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 03:07:19,901 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-03-19 03:07:19,901 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-03-19 03:07:19,901 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-03-19 03:07:19,901 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 29) the Hoare annotation is: true [2022-03-19 03:07:19,901 INFO L885 garLoopResultBuilder]: At program point L27(line 27) the Hoare annotation is: true [2022-03-19 03:07:19,901 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 29) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point L22(line 22) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L878 garLoopResultBuilder]: At program point L23-2(lines 23 26) the Hoare annotation is: (and (<= main_~y~0 100) (<= main_~x~0 100)) [2022-03-19 03:07:19,902 INFO L878 garLoopResultBuilder]: At program point L23-3(lines 23 26) the Hoare annotation is: (and (or (= main_~y~0 100) (< 99 main_~x~0)) (<= main_~y~0 100) (<= main_~x~0 100)) [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 29) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,902 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|)) [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,902 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,903 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-19 03:07:19,903 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-19 03:07:19,903 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-19 03:07:19,903 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-19 03:07:19,903 INFO L885 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: true [2022-03-19 03:07:19,903 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: true [2022-03-19 03:07:19,903 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-19 03:07:19,905 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-03-19 03:07:19,906 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 03:07:19,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 03:07:19 BoogieIcfgContainer [2022-03-19 03:07:19,916 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 03:07:19,917 INFO L158 Benchmark]: Toolchain (without parser) took 7785.40ms. Allocated memory was 197.1MB in the beginning and 264.2MB in the end (delta: 67.1MB). Free memory was 141.5MB in the beginning and 199.3MB in the end (delta: -57.8MB). Peak memory consumption was 10.1MB. Max. memory is 8.0GB. [2022-03-19 03:07:19,917 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 03:07:19,917 INFO L158 Benchmark]: CACSL2BoogieTranslator took 188.79ms. Allocated memory was 197.1MB in the beginning and 264.2MB in the end (delta: 67.1MB). Free memory was 141.4MB in the beginning and 235.7MB in the end (delta: -94.2MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. [2022-03-19 03:07:19,917 INFO L158 Benchmark]: Boogie Preprocessor took 17.52ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 234.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 03:07:19,918 INFO L158 Benchmark]: RCFGBuilder took 179.55ms. Allocated memory is still 264.2MB. Free memory was 234.0MB in the beginning and 224.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-19 03:07:19,918 INFO L158 Benchmark]: TraceAbstraction took 7388.41ms. Allocated memory is still 264.2MB. Free memory was 223.9MB in the beginning and 199.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.1MB. Max. memory is 8.0GB. [2022-03-19 03:07:19,919 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 197.1MB. Free memory is still 157.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 188.79ms. Allocated memory was 197.1MB in the beginning and 264.2MB in the end (delta: 67.1MB). Free memory was 141.4MB in the beginning and 235.7MB in the end (delta: -94.2MB). Peak memory consumption was 9.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.52ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 234.4MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 179.55ms. Allocated memory is still 264.2MB. Free memory was 234.0MB in the beginning and 224.6MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 7388.41ms. Allocated memory is still 264.2MB. Free memory was 223.9MB in the beginning and 199.3MB in the end (delta: 24.6MB). Peak memory consumption was 25.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 7.3s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 90 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2 IncrementalHoareTripleChecker+Unchecked, 53 mSDsCounter, 12 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 69 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 12 mSolverCounterUnsat, 37 mSDtfsCounter, 69 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 6.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 19, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 32 PreInvPairs, 44 NumberOfFragments, 56 HoareAnnotationTreeSize, 32 FomulaSimplifications, 6 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 65 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: y <= 100 && x <= 100 - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 RESULT: Ultimate proved your program to be correct! [2022-03-19 03:07:19,944 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...