/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_2-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-09 22:20:44,367 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-09 22:20:44,370 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-09 22:20:44,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-09 22:20:44,458 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-09 22:20:44,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-09 22:20:44,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-09 22:20:44,461 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-09 22:20:44,494 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-09 22:20:44,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-09 22:20:44,495 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-09 22:20:44,495 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-09 22:20:44,496 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-09 22:20:44,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-09 22:20:44,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-09 22:20:44,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-09 22:20:44,497 INFO L138 SettingsManager]: * Use SBE=true [2022-01-09 22:20:44,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-09 22:20:44,498 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-09 22:20:44,499 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-09 22:20:44,499 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-09 22:20:44,499 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-09 22:20:44,499 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-09 22:20:44,499 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:44,499 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-09 22:20:44,499 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-09 22:20:44,500 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-09 22:20:44,500 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-09 22:20:44,501 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-09 22:20:44,501 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-09 22:20:44,501 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-09 22:20:44,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-09 22:20:44,501 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-09 22:20:44,719 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-09 22:20:44,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-09 22:20:44,742 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-09 22:20:44,743 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-09 22:20:44,744 INFO L275 PluginConnector]: CDTParser initialized [2022-01-09 22:20:44,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_2-2.i [2022-01-09 22:20:44,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fc45e1c/03b8a20159054224b489e248b98f346d/FLAG01299db32 [2022-01-09 22:20:45,204 INFO L306 CDTParser]: Found 1 translation units. [2022-01-09 22:20:45,204 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/array_2-2.i [2022-01-09 22:20:45,213 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fc45e1c/03b8a20159054224b489e248b98f346d/FLAG01299db32 [2022-01-09 22:20:45,228 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e7fc45e1c/03b8a20159054224b489e248b98f346d [2022-01-09 22:20:45,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-09 22:20:45,233 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-09 22:20:45,235 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:45,236 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-09 22:20:45,238 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-09 22:20:45,238 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,242 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d10ef7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45, skipping insertion in model container [2022-01-09 22:20:45,242 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,248 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-09 22:20:45,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-09 22:20:45,395 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-acceleration/array_2-2.i[849,862] [2022-01-09 22:20:45,422 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:45,434 INFO L203 MainTranslator]: Completed pre-run [2022-01-09 22:20:45,446 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-acceleration/array_2-2.i[849,862] [2022-01-09 22:20:45,454 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-09 22:20:45,466 INFO L208 MainTranslator]: Completed translation [2022-01-09 22:20:45,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45 WrapperNode [2022-01-09 22:20:45,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-09 22:20:45,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:45,470 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-09 22:20:45,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-09 22:20:45,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,498 INFO L137 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 54 [2022-01-09 22:20:45,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-09 22:20:45,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-09 22:20:45,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-09 22:20:45,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-09 22:20:45,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,526 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,527 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,528 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-09 22:20:45,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-09 22:20:45,529 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-09 22:20:45,529 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-09 22:20:45,532 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (1/1) ... [2022-01-09 22:20:45,537 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-09 22:20:45,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:45,560 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) [2022-01-09 22:20:45,588 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 [2022-01-09 22:20:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-09 22:20:45,602 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-09 22:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-01-09 22:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-09 22:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-09 22:20:45,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-09 22:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-09 22:20:45,603 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-09 22:20:45,660 INFO L234 CfgBuilder]: Building ICFG [2022-01-09 22:20:45,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-09 22:20:45,817 INFO L275 CfgBuilder]: Performing block encoding [2022-01-09 22:20:45,821 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-09 22:20:45,822 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-09 22:20:45,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:45 BoogieIcfgContainer [2022-01-09 22:20:45,823 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-09 22:20:45,824 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-09 22:20:45,824 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-09 22:20:45,837 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-09 22:20:45,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.01 10:20:45" (1/3) ... [2022-01-09 22:20:45,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14adfe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:45, skipping insertion in model container [2022-01-09 22:20:45,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.01 10:20:45" (2/3) ... [2022-01-09 22:20:45,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14adfe1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.01 10:20:45, skipping insertion in model container [2022-01-09 22:20:45,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.01 10:20:45" (3/3) ... [2022-01-09 22:20:45,840 INFO L111 eAbstractionObserver]: Analyzing ICFG array_2-2.i [2022-01-09 22:20:45,844 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-09 22:20:45,845 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-09 22:20:45,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-09 22:20:45,916 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-09 22:20:45,916 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-09 22:20:45,929 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) [2022-01-09 22:20:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-09 22:20:45,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:45,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:45,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:45,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:45,950 INFO L85 PathProgramCache]: Analyzing trace with hash 212047733, now seen corresponding path program 1 times [2022-01-09 22:20:45,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:45,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [695360282] [2022-01-09 22:20:45,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:45,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:46,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:46,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-09 22:20:46,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:46,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [695360282] [2022-01-09 22:20:46,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [695360282] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-09 22:20:46,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-09 22:20:46,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-09 22:20:46,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258001993] [2022-01-09 22:20:46,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-09 22:20:46,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-09 22:20:46,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:46,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-09 22:20:46,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:20:46,161 INFO L87 Difference]: Start difference. First operand has 15 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 14 states have internal predecessors, (19), 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) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-09 22:20:46,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:46,212 INFO L93 Difference]: Finished difference Result 30 states and 40 transitions. [2022-01-09 22:20:46,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-09 22:20:46,215 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) Word has length 8 [2022-01-09 22:20:46,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:46,222 INFO L225 Difference]: With dead ends: 30 [2022-01-09 22:20:46,222 INFO L226 Difference]: Without dead ends: 15 [2022-01-09 22:20:46,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-09 22:20:46,228 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 2 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:46,229 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 20 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:46,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-01-09 22:20:46,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 13. [2022-01-09 22:20:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 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) [2022-01-09 22:20:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2022-01-09 22:20:46,257 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2022-01-09 22:20:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:46,257 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2022-01-09 22:20:46,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2022-01-09 22:20:46,259 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2022-01-09 22:20:46,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-01-09 22:20:46,259 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:46,260 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:46,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-09 22:20:46,260 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:46,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:46,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1312443705, now seen corresponding path program 1 times [2022-01-09 22:20:46,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:46,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824599273] [2022-01-09 22:20:46,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:46,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:46,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:46,353 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:20:46,353 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:46,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824599273] [2022-01-09 22:20:46,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824599273] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:46,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [982999906] [2022-01-09 22:20:46,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:46,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:46,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:46,360 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:20:46,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-09 22:20:46,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:46,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-09 22:20:46,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:46,511 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:20:46,511 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:46,547 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-09 22:20:46,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [982999906] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:46,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:46,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-09 22:20:46,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569924647] [2022-01-09 22:20:46,549 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:46,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-09 22:20:46,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:46,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-09 22:20:46,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:20:46,550 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-01-09 22:20:46,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:46,593 INFO L93 Difference]: Finished difference Result 33 states and 40 transitions. [2022-01-09 22:20:46,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-09 22:20:46,593 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) Word has length 12 [2022-01-09 22:20:46,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:46,594 INFO L225 Difference]: With dead ends: 33 [2022-01-09 22:20:46,594 INFO L226 Difference]: Without dead ends: 25 [2022-01-09 22:20:46,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-01-09 22:20:46,596 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 11 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:46,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 16 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-09 22:20:46,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-01-09 22:20:46,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-01-09 22:20:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 24 states have internal predecessors, (26), 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) [2022-01-09 22:20:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2022-01-09 22:20:46,601 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 12 [2022-01-09 22:20:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:46,601 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2022-01-09 22:20:46,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 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) [2022-01-09 22:20:46,602 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2022-01-09 22:20:46,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-09 22:20:46,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:46,603 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:46,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:46,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:46,826 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:46,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:46,826 INFO L85 PathProgramCache]: Analyzing trace with hash 682476165, now seen corresponding path program 2 times [2022-01-09 22:20:46,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:46,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508354995] [2022-01-09 22:20:46,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:46,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:46,928 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 22:20:46,929 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:46,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508354995] [2022-01-09 22:20:46,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508354995] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:46,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127000400] [2022-01-09 22:20:46,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-09 22:20:46,930 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:46,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:46,931 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:20:46,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-09 22:20:47,020 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-09 22:20:47,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:20:47,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-09 22:20:47,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:47,088 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 22:20:47,088 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:47,184 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-01-09 22:20:47,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127000400] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:47,185 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:47,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2022-01-09 22:20:47,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170174345] [2022-01-09 22:20:47,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:47,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-09 22:20:47,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:47,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-09 22:20:47,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-09 22:20:47,187 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2022-01-09 22:20:47,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:47,323 INFO L93 Difference]: Finished difference Result 63 states and 76 transitions. [2022-01-09 22:20:47,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-09 22:20:47,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) Word has length 24 [2022-01-09 22:20:47,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:47,327 INFO L225 Difference]: With dead ends: 63 [2022-01-09 22:20:47,327 INFO L226 Difference]: Without dead ends: 49 [2022-01-09 22:20:47,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2022-01-09 22:20:47,329 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 38 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:47,330 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 16 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:20:47,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-01-09 22:20:47,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-01-09 22:20:47,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 48 states have (on average 1.0416666666666667) internal successors, (50), 48 states have internal predecessors, (50), 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) [2022-01-09 22:20:47,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2022-01-09 22:20:47,344 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 24 [2022-01-09 22:20:47,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:47,345 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2022-01-09 22:20:47,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.3846153846153846) internal successors, (31), 13 states have internal predecessors, (31), 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) [2022-01-09 22:20:47,345 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2022-01-09 22:20:47,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-09 22:20:47,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:47,347 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:47,371 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-01-09 22:20:47,563 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-01-09 22:20:47,564 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:47,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:47,564 INFO L85 PathProgramCache]: Analyzing trace with hash -1926519011, now seen corresponding path program 3 times [2022-01-09 22:20:47,564 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:47,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302376011] [2022-01-09 22:20:47,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:47,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:47,783 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-09 22:20:47,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:47,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302376011] [2022-01-09 22:20:47,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302376011] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:47,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [280383672] [2022-01-09 22:20:47,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-09 22:20:47,784 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:47,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:47,785 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:20:47,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-09 22:20:48,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-01-09 22:20:48,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:20:48,896 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-09 22:20:48,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:49,031 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-09 22:20:49,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:49,256 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-01-09 22:20:49,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [280383672] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:49,256 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:49,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2022-01-09 22:20:49,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813384375] [2022-01-09 22:20:49,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:49,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-09 22:20:49,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:49,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-09 22:20:49,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-01-09 22:20:49,261 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 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) [2022-01-09 22:20:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:49,434 INFO L93 Difference]: Finished difference Result 123 states and 148 transitions. [2022-01-09 22:20:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-09 22:20:49,435 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 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) Word has length 48 [2022-01-09 22:20:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:49,437 INFO L225 Difference]: With dead ends: 123 [2022-01-09 22:20:49,437 INFO L226 Difference]: Without dead ends: 97 [2022-01-09 22:20:49,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2022-01-09 22:20:49,442 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 66 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 102 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:49,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 24 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 102 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-09 22:20:49,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2022-01-09 22:20:49,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2022-01-09 22:20:49,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 96 states have (on average 1.0208333333333333) internal successors, (98), 96 states have internal predecessors, (98), 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) [2022-01-09 22:20:49,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2022-01-09 22:20:49,464 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 48 [2022-01-09 22:20:49,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:49,465 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2022-01-09 22:20:49,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 3.12) internal successors, (78), 25 states have internal predecessors, (78), 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) [2022-01-09 22:20:49,466 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2022-01-09 22:20:49,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-01-09 22:20:49,470 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:49,470 INFO L514 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:49,498 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:49,683 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:49,684 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:49,684 INFO L85 PathProgramCache]: Analyzing trace with hash -154707891, now seen corresponding path program 4 times [2022-01-09 22:20:49,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:49,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1574562000] [2022-01-09 22:20:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:49,685 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:49,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:50,118 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-01-09 22:20:50,118 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:50,118 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1574562000] [2022-01-09 22:20:50,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1574562000] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:50,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150846733] [2022-01-09 22:20:50,119 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-09 22:20:50,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:50,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:50,120 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:20:50,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-09 22:20:50,300 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-09 22:20:50,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-09 22:20:50,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-09 22:20:50,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-09 22:20:50,483 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-01-09 22:20:50,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-09 22:20:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 968 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2022-01-09 22:20:51,278 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150846733] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-09 22:20:51,278 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-09 22:20:51,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2022-01-09 22:20:51,279 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130220833] [2022-01-09 22:20:51,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-09 22:20:51,279 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-09 22:20:51,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-09 22:20:51,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-09 22:20:51,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-01-09 22:20:51,282 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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) [2022-01-09 22:20:51,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-09 22:20:51,599 INFO L93 Difference]: Finished difference Result 243 states and 292 transitions. [2022-01-09 22:20:51,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-01-09 22:20:51,599 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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) Word has length 96 [2022-01-09 22:20:51,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-09 22:20:51,601 INFO L225 Difference]: With dead ends: 243 [2022-01-09 22:20:51,601 INFO L226 Difference]: Without dead ends: 193 [2022-01-09 22:20:51,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2022-01-09 22:20:51,603 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 169 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-09 22:20:51,603 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [169 Valid, 36 Invalid, 373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-09 22:20:51,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-01-09 22:20:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 193. [2022-01-09 22:20:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 1.0104166666666667) internal successors, (194), 192 states have internal predecessors, (194), 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) [2022-01-09 22:20:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 194 transitions. [2022-01-09 22:20:51,615 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 194 transitions. Word has length 96 [2022-01-09 22:20:51,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-09 22:20:51,615 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 194 transitions. [2022-01-09 22:20:51,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 3.061224489795918) internal successors, (150), 49 states have internal predecessors, (150), 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) [2022-01-09 22:20:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 194 transitions. [2022-01-09 22:20:51,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2022-01-09 22:20:51,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-09 22:20:51,618 INFO L514 BasicCegarLoop]: trace histogram [46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-09 22:20:51,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-09 22:20:51,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:51,846 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-09 22:20:51,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-09 22:20:51,846 INFO L85 PathProgramCache]: Analyzing trace with hash -224503123, now seen corresponding path program 5 times [2022-01-09 22:20:51,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-09 22:20:51,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891301678] [2022-01-09 22:20:51,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-09 22:20:51,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-09 22:20:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-09 22:20:52,976 INFO L134 CoverageAnalysis]: Checked inductivity of 4232 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 2116 trivial. 0 not checked. [2022-01-09 22:20:52,976 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-09 22:20:52,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891301678] [2022-01-09 22:20:52,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891301678] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-09 22:20:52,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461610887] [2022-01-09 22:20:52,977 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-09 22:20:52,977 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-09 22:20:52,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-09 22:20:52,978 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-09 22:20:52,981 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process