/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/eca-rers2012/Problem17_label04.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:23:03,950 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:23:03,952 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:23:03,986 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:23:04,048 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 [2022-01-10 00:23:04,070 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:23:04,070 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:23:04,070 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:23:04,070 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:23:04,070 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:23:04,071 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:23:04,072 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:23:04,073 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:23:04,073 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:23:04,073 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:23:04,073 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:23:04,073 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:23:04,074 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:23:04,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:23:04,075 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:23:04,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:23:04,076 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:23:04,255 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:23:04,271 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:23:04,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:23:04,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:23:04,273 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:23:04,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2022-01-10 00:23:04,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10850221/429a020f6f8d41c1861f82983123dd60/FLAG2ce93ae41 [2022-01-10 00:23:04,835 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:23:04,835 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c [2022-01-10 00:23:04,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10850221/429a020f6f8d41c1861f82983123dd60/FLAG2ce93ae41 [2022-01-10 00:23:05,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e10850221/429a020f6f8d41c1861f82983123dd60 [2022-01-10 00:23:05,296 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:23:05,297 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:23:05,298 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:23:05,298 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:23:05,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:23:05,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:23:05" (1/1) ... [2022-01-10 00:23:05,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21e117c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:05, skipping insertion in model container [2022-01-10 00:23:05,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:23:05" (1/1) ... [2022-01-10 00:23:05,316 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:23:05,374 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:23:05,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c[3138,3151] [2022-01-10 00:23:05,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:23:05,970 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:23:05,990 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label04.c[3138,3151] [2022-01-10 00:23:06,173 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:23:06,185 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:23:06,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06 WrapperNode [2022-01-10 00:23:06,187 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:23:06,188 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:23:06,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:23:06,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:23:06,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,234 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,422 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:23:06,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:23:06,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:23:06,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:23:06,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:23:06,429 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,639 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,704 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,749 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:23:06,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:23:06,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:23:06,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:23:06,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (1/1) ... [2022-01-10 00:23:06,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:23:06,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:23:06,785 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) [2022-01-10 00:23:06,853 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 [2022-01-10 00:23:06,878 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:23:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:23:06,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:23:06,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:23:06,932 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:23:06,933 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:23:09,253 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:23:09,271 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:23:09,271 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:23:09,274 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:23:09 BoogieIcfgContainer [2022-01-10 00:23:09,275 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:23:09,276 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:23:09,276 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:23:09,279 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:23:09,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:23:05" (1/3) ... [2022-01-10 00:23:09,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336612be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:23:09, skipping insertion in model container [2022-01-10 00:23:09,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:23:06" (2/3) ... [2022-01-10 00:23:09,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@336612be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:23:09, skipping insertion in model container [2022-01-10 00:23:09,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:23:09" (3/3) ... [2022-01-10 00:23:09,282 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label04.c [2022-01-10 00:23:09,286 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:23:09,286 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:23:09,334 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:23:09,340 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 [2022-01-10 00:23:09,340 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:23:09,362 INFO L276 IsEmpty]: Start isEmpty. Operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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) [2022-01-10 00:23:09,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-10 00:23:09,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:09,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:09,369 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:09,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:09,373 INFO L85 PathProgramCache]: Analyzing trace with hash -279853278, now seen corresponding path program 1 times [2022-01-10 00:23:09,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:09,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960807779] [2022-01-10 00:23:09,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:09,382 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:09,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:09,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:09,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:09,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960807779] [2022-01-10 00:23:09,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960807779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:09,570 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:09,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:23:09,571 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896786370] [2022-01-10 00:23:09,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:09,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:09,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:09,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:09,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:09,600 INFO L87 Difference]: Start difference. First operand has 590 states, 588 states have (on average 1.8061224489795917) internal successors, (1062), 589 states have internal predecessors, (1062), 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 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-01-10 00:23:11,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:11,878 INFO L93 Difference]: Finished difference Result 1644 states and 3029 transitions. [2022-01-10 00:23:11,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:11,880 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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 20 [2022-01-10 00:23:11,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:11,905 INFO L225 Difference]: With dead ends: 1644 [2022-01-10 00:23:11,905 INFO L226 Difference]: Without dead ends: 977 [2022-01-10 00:23:11,909 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:11,915 INFO L933 BasicCegarLoop]: 425 mSDtfsCounter, 468 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 1470 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 468 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 1470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:11,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [468 Valid, 503 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 1470 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-10 00:23:11,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 977 states. [2022-01-10 00:23:11,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 977 to 971. [2022-01-10 00:23:11,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 970 states have (on average 1.5536082474226804) internal successors, (1507), 970 states have internal predecessors, (1507), 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) [2022-01-10 00:23:11,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1507 transitions. [2022-01-10 00:23:11,988 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1507 transitions. Word has length 20 [2022-01-10 00:23:11,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:11,988 INFO L470 AbstractCegarLoop]: Abstraction has 971 states and 1507 transitions. [2022-01-10 00:23:11,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 2 states have internal predecessors, (20), 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) [2022-01-10 00:23:11,988 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1507 transitions. [2022-01-10 00:23:11,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-01-10 00:23:11,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:11,992 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:11,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:23:11,993 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:11,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:11,994 INFO L85 PathProgramCache]: Analyzing trace with hash -560555142, now seen corresponding path program 1 times [2022-01-10 00:23:11,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:11,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774478247] [2022-01-10 00:23:11,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:11,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:12,102 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:12,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:12,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774478247] [2022-01-10 00:23:12,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774478247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:12,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:12,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:23:12,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957080790] [2022-01-10 00:23:12,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:12,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:12,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:12,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:12,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:12,106 INFO L87 Difference]: Start difference. First operand 971 states and 1507 transitions. Second operand has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2022-01-10 00:23:14,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:14,198 INFO L93 Difference]: Finished difference Result 2813 states and 4381 transitions. [2022-01-10 00:23:14,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:14,198 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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 87 [2022-01-10 00:23:14,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:14,204 INFO L225 Difference]: With dead ends: 2813 [2022-01-10 00:23:14,204 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 00:23:14,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:14,213 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 405 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:14,213 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 579 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 00:23:14,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 00:23:14,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1841. [2022-01-10 00:23:14,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1841 states, 1840 states have (on average 1.35) internal successors, (2484), 1840 states have internal predecessors, (2484), 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) [2022-01-10 00:23:14,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1841 states to 1841 states and 2484 transitions. [2022-01-10 00:23:14,259 INFO L78 Accepts]: Start accepts. Automaton has 1841 states and 2484 transitions. Word has length 87 [2022-01-10 00:23:14,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:14,260 INFO L470 AbstractCegarLoop]: Abstraction has 1841 states and 2484 transitions. [2022-01-10 00:23:14,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.0) internal successors, (87), 2 states have internal predecessors, (87), 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) [2022-01-10 00:23:14,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1841 states and 2484 transitions. [2022-01-10 00:23:14,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 00:23:14,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:14,265 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:14,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:23:14,265 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:14,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 405382798, now seen corresponding path program 1 times [2022-01-10 00:23:14,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:14,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707288317] [2022-01-10 00:23:14,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:14,267 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:14,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:14,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707288317] [2022-01-10 00:23:14,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707288317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:14,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:14,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:14,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682446690] [2022-01-10 00:23:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:14,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:14,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:14,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:14,354 INFO L87 Difference]: Start difference. First operand 1841 states and 2484 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 00:23:16,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:16,162 INFO L93 Difference]: Finished difference Result 4552 states and 6282 transitions. [2022-01-10 00:23:16,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:16,162 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 90 [2022-01-10 00:23:16,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:16,170 INFO L225 Difference]: With dead ends: 4552 [2022-01-10 00:23:16,170 INFO L226 Difference]: Without dead ends: 2713 [2022-01-10 00:23:16,172 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 [2022-01-10 00:23:16,173 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 487 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1264 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 1679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 1264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:16,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 886 Invalid, 1679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 1264 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:23:16,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2713 states. [2022-01-10 00:23:16,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2713 to 2711. [2022-01-10 00:23:16,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2710 states have (on average 1.3003690036900368) internal successors, (3524), 2710 states have internal predecessors, (3524), 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) [2022-01-10 00:23:16,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3524 transitions. [2022-01-10 00:23:16,207 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3524 transitions. Word has length 90 [2022-01-10 00:23:16,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:16,207 INFO L470 AbstractCegarLoop]: Abstraction has 2711 states and 3524 transitions. [2022-01-10 00:23:16,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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) [2022-01-10 00:23:16,208 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3524 transitions. [2022-01-10 00:23:16,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 00:23:16,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:16,215 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:16,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:23:16,216 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:16,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:16,216 INFO L85 PathProgramCache]: Analyzing trace with hash -41455991, now seen corresponding path program 1 times [2022-01-10 00:23:16,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:16,216 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620396284] [2022-01-10 00:23:16,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:16,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:16,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:16,336 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 00:23:16,337 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:16,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620396284] [2022-01-10 00:23:16,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620396284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:16,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:16,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:23:16,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791467029] [2022-01-10 00:23:16,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:16,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:16,338 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:16,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:16,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:16,338 INFO L87 Difference]: Start difference. First operand 2711 states and 3524 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-01-10 00:23:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:17,922 INFO L93 Difference]: Finished difference Result 7984 states and 10361 transitions. [2022-01-10 00:23:17,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:17,922 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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 159 [2022-01-10 00:23:17,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:17,933 INFO L225 Difference]: With dead ends: 7984 [2022-01-10 00:23:17,933 INFO L226 Difference]: Without dead ends: 4421 [2022-01-10 00:23:17,936 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:17,937 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 386 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 1629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 548 IncrementalHoareTripleChecker+Valid, 1081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:17,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:23:17,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4421 states. [2022-01-10 00:23:17,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4421 to 3571. [2022-01-10 00:23:17,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3571 states, 3570 states have (on average 1.1775910364145659) internal successors, (4204), 3570 states have internal predecessors, (4204), 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) [2022-01-10 00:23:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3571 states to 3571 states and 4204 transitions. [2022-01-10 00:23:17,978 INFO L78 Accepts]: Start accepts. Automaton has 3571 states and 4204 transitions. Word has length 159 [2022-01-10 00:23:17,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:17,978 INFO L470 AbstractCegarLoop]: Abstraction has 3571 states and 4204 transitions. [2022-01-10 00:23:17,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 2 states have internal predecessors, (92), 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) [2022-01-10 00:23:17,979 INFO L276 IsEmpty]: Start isEmpty. Operand 3571 states and 4204 transitions. [2022-01-10 00:23:17,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-01-10 00:23:17,980 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:17,980 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:17,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:23:17,980 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash -695550011, now seen corresponding path program 1 times [2022-01-10 00:23:17,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:17,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326636782] [2022-01-10 00:23:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:17,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:18,049 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:18,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:18,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326636782] [2022-01-10 00:23:18,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326636782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:18,050 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:18,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:18,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242406575] [2022-01-10 00:23:18,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:18,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:18,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:18,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:18,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:18,051 INFO L87 Difference]: Start difference. First operand 3571 states and 4204 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-10 00:23:19,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:19,434 INFO L93 Difference]: Finished difference Result 9273 states and 11087 transitions. [2022-01-10 00:23:19,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:19,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2022-01-10 00:23:19,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:19,449 INFO L225 Difference]: With dead ends: 9273 [2022-01-10 00:23:19,449 INFO L226 Difference]: Without dead ends: 5704 [2022-01-10 00:23:19,455 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 [2022-01-10 00:23:19,455 INFO L933 BasicCegarLoop]: 726 mSDtfsCounter, 496 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 1136 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:19,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 784 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1136 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:23:19,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5704 states. [2022-01-10 00:23:19,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5704 to 5704. [2022-01-10 00:23:19,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5704 states, 5703 states have (on average 1.1595651411537786) internal successors, (6613), 5703 states have internal predecessors, (6613), 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) [2022-01-10 00:23:19,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5704 states to 5704 states and 6613 transitions. [2022-01-10 00:23:19,523 INFO L78 Accepts]: Start accepts. Automaton has 5704 states and 6613 transitions. Word has length 172 [2022-01-10 00:23:19,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:19,524 INFO L470 AbstractCegarLoop]: Abstraction has 5704 states and 6613 transitions. [2022-01-10 00:23:19,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-10 00:23:19,525 INFO L276 IsEmpty]: Start isEmpty. Operand 5704 states and 6613 transitions. [2022-01-10 00:23:19,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-01-10 00:23:19,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:19,526 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:19,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:23:19,526 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:19,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:19,527 INFO L85 PathProgramCache]: Analyzing trace with hash -487366976, now seen corresponding path program 1 times [2022-01-10 00:23:19,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:19,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870054396] [2022-01-10 00:23:19,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:19,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:19,643 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:23:19,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:19,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870054396] [2022-01-10 00:23:19,644 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870054396] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:19,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:19,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:19,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360462501] [2022-01-10 00:23:19,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:19,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:19,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:19,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:19,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:19,645 INFO L87 Difference]: Start difference. First operand 5704 states and 6613 transitions. Second operand has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-01-10 00:23:21,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:21,259 INFO L93 Difference]: Finished difference Result 14376 states and 16776 transitions. [2022-01-10 00:23:21,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:21,260 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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 174 [2022-01-10 00:23:21,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:21,279 INFO L225 Difference]: With dead ends: 14376 [2022-01-10 00:23:21,279 INFO L226 Difference]: Without dead ends: 8673 [2022-01-10 00:23:21,285 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 [2022-01-10 00:23:21,285 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 431 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 274 IncrementalHoareTripleChecker+Valid, 1215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:21,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [431 Valid, 444 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [274 Valid, 1215 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:23:21,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8673 states. [2022-01-10 00:23:21,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8673 to 5677. [2022-01-10 00:23:21,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5677 states, 5676 states have (on average 1.1578576462297392) internal successors, (6572), 5676 states have internal predecessors, (6572), 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) [2022-01-10 00:23:21,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5677 states to 5677 states and 6572 transitions. [2022-01-10 00:23:21,385 INFO L78 Accepts]: Start accepts. Automaton has 5677 states and 6572 transitions. Word has length 174 [2022-01-10 00:23:21,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:21,385 INFO L470 AbstractCegarLoop]: Abstraction has 5677 states and 6572 transitions. [2022-01-10 00:23:21,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.0) internal successors, (105), 3 states have internal predecessors, (105), 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) [2022-01-10 00:23:21,385 INFO L276 IsEmpty]: Start isEmpty. Operand 5677 states and 6572 transitions. [2022-01-10 00:23:21,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-10 00:23:21,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:21,387 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:21,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 00:23:21,388 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:21,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:21,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1861125085, now seen corresponding path program 1 times [2022-01-10 00:23:21,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:21,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261987317] [2022-01-10 00:23:21,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:21,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:21,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 267 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 00:23:21,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:21,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261987317] [2022-01-10 00:23:21,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261987317] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:21,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:21,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:21,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371599521] [2022-01-10 00:23:21,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:21,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:21,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:21,471 INFO L87 Difference]: Start difference. First operand 5677 states and 6572 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-10 00:23:23,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:23,396 INFO L93 Difference]: Finished difference Result 13935 states and 16238 transitions. [2022-01-10 00:23:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:23,396 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 252 [2022-01-10 00:23:23,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:23,415 INFO L225 Difference]: With dead ends: 13935 [2022-01-10 00:23:23,415 INFO L226 Difference]: Without dead ends: 7832 [2022-01-10 00:23:23,421 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 [2022-01-10 00:23:23,422 INFO L933 BasicCegarLoop]: 586 mSDtfsCounter, 495 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1238 mSolverCounterSat, 350 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 350 IncrementalHoareTripleChecker+Valid, 1238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:23,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 629 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [350 Valid, 1238 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 00:23:23,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7832 states. [2022-01-10 00:23:23,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7832 to 7402. [2022-01-10 00:23:23,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7402 states, 7401 states have (on average 1.1638967707066612) internal successors, (8614), 7401 states have internal predecessors, (8614), 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) [2022-01-10 00:23:23,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7402 states to 7402 states and 8614 transitions. [2022-01-10 00:23:23,555 INFO L78 Accepts]: Start accepts. Automaton has 7402 states and 8614 transitions. Word has length 252 [2022-01-10 00:23:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:23,556 INFO L470 AbstractCegarLoop]: Abstraction has 7402 states and 8614 transitions. [2022-01-10 00:23:23,556 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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) [2022-01-10 00:23:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 7402 states and 8614 transitions. [2022-01-10 00:23:23,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2022-01-10 00:23:23,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:23,558 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:23,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:23:23,559 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:23,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:23,559 INFO L85 PathProgramCache]: Analyzing trace with hash 625857440, now seen corresponding path program 1 times [2022-01-10 00:23:23,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:23,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580560545] [2022-01-10 00:23:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:23,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:23,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:23,653 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-01-10 00:23:23,654 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:23,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580560545] [2022-01-10 00:23:23,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580560545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:23,654 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:23,654 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:23,654 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659088792] [2022-01-10 00:23:23,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:23,655 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:23,655 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:23,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:23,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:23,655 INFO L87 Difference]: Start difference. First operand 7402 states and 8614 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-01-10 00:23:25,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:25,169 INFO L93 Difference]: Finished difference Result 19038 states and 22311 transitions. [2022-01-10 00:23:25,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:25,169 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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 257 [2022-01-10 00:23:25,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:25,184 INFO L225 Difference]: With dead ends: 19038 [2022-01-10 00:23:25,184 INFO L226 Difference]: Without dead ends: 11213 [2022-01-10 00:23:25,192 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 [2022-01-10 00:23:25,192 INFO L933 BasicCegarLoop]: 775 mSDtfsCounter, 379 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 1196 mSolverCounterSat, 249 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 249 IncrementalHoareTripleChecker+Valid, 1196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:25,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 842 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [249 Valid, 1196 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:23:25,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11213 states. [2022-01-10 00:23:25,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11213 to 10363. [2022-01-10 00:23:25,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10363 states, 10362 states have (on average 1.132117351862575) internal successors, (11731), 10362 states have internal predecessors, (11731), 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) [2022-01-10 00:23:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10363 states to 10363 states and 11731 transitions. [2022-01-10 00:23:25,305 INFO L78 Accepts]: Start accepts. Automaton has 10363 states and 11731 transitions. Word has length 257 [2022-01-10 00:23:25,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:25,308 INFO L470 AbstractCegarLoop]: Abstraction has 10363 states and 11731 transitions. [2022-01-10 00:23:25,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 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) [2022-01-10 00:23:25,308 INFO L276 IsEmpty]: Start isEmpty. Operand 10363 states and 11731 transitions. [2022-01-10 00:23:25,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-10 00:23:25,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:25,311 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:25,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:23:25,311 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:25,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:25,313 INFO L85 PathProgramCache]: Analyzing trace with hash 680789272, now seen corresponding path program 1 times [2022-01-10 00:23:25,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:25,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397010367] [2022-01-10 00:23:25,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:25,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:25,431 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 186 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:23:25,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:25,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397010367] [2022-01-10 00:23:25,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397010367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:25,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:25,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:25,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038179330] [2022-01-10 00:23:25,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:25,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:25,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:25,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:25,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:25,433 INFO L87 Difference]: Start difference. First operand 10363 states and 11731 transitions. Second operand has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) [2022-01-10 00:23:27,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:27,007 INFO L93 Difference]: Finished difference Result 24567 states and 27907 transitions. [2022-01-10 00:23:27,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:27,007 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) Word has length 275 [2022-01-10 00:23:27,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:27,026 INFO L225 Difference]: With dead ends: 24567 [2022-01-10 00:23:27,026 INFO L226 Difference]: Without dead ends: 13774 [2022-01-10 00:23:27,036 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 [2022-01-10 00:23:27,037 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 444 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1279 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 444 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 1279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:27,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [444 Valid, 295 Invalid, 1507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 1279 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:23:27,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13774 states. [2022-01-10 00:23:27,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13774 to 12918. [2022-01-10 00:23:27,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12918 states, 12917 states have (on average 1.1388867384067507) internal successors, (14711), 12917 states have internal predecessors, (14711), 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) [2022-01-10 00:23:27,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12918 states to 12918 states and 14711 transitions. [2022-01-10 00:23:27,170 INFO L78 Accepts]: Start accepts. Automaton has 12918 states and 14711 transitions. Word has length 275 [2022-01-10 00:23:27,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:27,171 INFO L470 AbstractCegarLoop]: Abstraction has 12918 states and 14711 transitions. [2022-01-10 00:23:27,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.66666666666667) internal successors, (194), 3 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) [2022-01-10 00:23:27,171 INFO L276 IsEmpty]: Start isEmpty. Operand 12918 states and 14711 transitions. [2022-01-10 00:23:27,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-10 00:23:27,174 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:27,174 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:27,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:23:27,174 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:27,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:27,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1540121653, now seen corresponding path program 1 times [2022-01-10 00:23:27,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:27,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791288936] [2022-01-10 00:23:27,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:27,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:27,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:27,275 INFO L134 CoverageAnalysis]: Checked inductivity of 278 backedges. 196 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:23:27,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:27,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791288936] [2022-01-10 00:23:27,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791288936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:27,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:27,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 00:23:27,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359307625] [2022-01-10 00:23:27,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:27,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:23:27,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:27,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:23:27,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:23:27,277 INFO L87 Difference]: Start difference. First operand 12918 states and 14711 transitions. Second operand has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2022-01-10 00:23:30,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:30,516 INFO L93 Difference]: Finished difference Result 46351 states and 52889 transitions. [2022-01-10 00:23:30,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:23:30,516 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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 280 [2022-01-10 00:23:30,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:30,570 INFO L225 Difference]: With dead ends: 46351 [2022-01-10 00:23:30,570 INFO L226 Difference]: Without dead ends: 32154 [2022-01-10 00:23:30,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:23:30,585 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 897 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 2796 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 897 SdHoareTripleChecker+Valid, 336 SdHoareTripleChecker+Invalid, 3240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 2796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:30,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [897 Valid, 336 Invalid, 3240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 2796 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-10 00:23:30,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32154 states. [2022-01-10 00:23:30,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32154 to 31677. [2022-01-10 00:23:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31677 states, 31676 states have (on average 1.1246685187523677) internal successors, (35625), 31676 states have internal predecessors, (35625), 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) [2022-01-10 00:23:30,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31677 states to 31677 states and 35625 transitions. [2022-01-10 00:23:30,943 INFO L78 Accepts]: Start accepts. Automaton has 31677 states and 35625 transitions. Word has length 280 [2022-01-10 00:23:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:30,943 INFO L470 AbstractCegarLoop]: Abstraction has 31677 states and 35625 transitions. [2022-01-10 00:23:30,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.75) internal successors, (199), 4 states have internal predecessors, (199), 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) [2022-01-10 00:23:30,944 INFO L276 IsEmpty]: Start isEmpty. Operand 31677 states and 35625 transitions. [2022-01-10 00:23:30,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 00:23:30,947 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:30,947 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:30,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 00:23:30,948 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:30,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:30,948 INFO L85 PathProgramCache]: Analyzing trace with hash -2068453589, now seen corresponding path program 1 times [2022-01-10 00:23:30,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:30,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765679954] [2022-01-10 00:23:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:30,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:30,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:31,047 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:23:31,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:31,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765679954] [2022-01-10 00:23:31,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765679954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:23:31,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:23:31,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:23:31,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046610619] [2022-01-10 00:23:31,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:23:31,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:23:31,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:31,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:23:31,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:23:31,049 INFO L87 Difference]: Start difference. First operand 31677 states and 35625 transitions. Second operand has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-01-10 00:23:33,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:33,097 INFO L93 Difference]: Finished difference Result 76998 states and 86991 transitions. [2022-01-10 00:23:33,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:23:33,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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 309 [2022-01-10 00:23:33,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:33,161 INFO L225 Difference]: With dead ends: 76998 [2022-01-10 00:23:33,161 INFO L226 Difference]: Without dead ends: 44894 [2022-01-10 00:23:33,184 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 [2022-01-10 00:23:33,186 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 464 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1299 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 1506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 1299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:33,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 426 Invalid, 1506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 1299 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:23:33,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44894 states. [2022-01-10 00:23:33,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44894 to 43162. [2022-01-10 00:23:33,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43162 states, 43161 states have (on average 1.1074117837862885) internal successors, (47797), 43161 states have internal predecessors, (47797), 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) [2022-01-10 00:23:33,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43162 states to 43162 states and 47797 transitions. [2022-01-10 00:23:33,580 INFO L78 Accepts]: Start accepts. Automaton has 43162 states and 47797 transitions. Word has length 309 [2022-01-10 00:23:33,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:33,580 INFO L470 AbstractCegarLoop]: Abstraction has 43162 states and 47797 transitions. [2022-01-10 00:23:33,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 76.0) internal successors, (228), 3 states have internal predecessors, (228), 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) [2022-01-10 00:23:33,581 INFO L276 IsEmpty]: Start isEmpty. Operand 43162 states and 47797 transitions. [2022-01-10 00:23:33,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2022-01-10 00:23:33,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:33,786 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:33,786 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 00:23:33,786 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:33,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:33,787 INFO L85 PathProgramCache]: Analyzing trace with hash 856418989, now seen corresponding path program 1 times [2022-01-10 00:23:33,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:33,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435665476] [2022-01-10 00:23:33,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:33,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:33,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:33,898 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 217 proven. 105 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:23:33,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435665476] [2022-01-10 00:23:33,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435665476] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:23:33,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824989092] [2022-01-10 00:23:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:33,899 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:23:33,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:23:33,916 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) [2022-01-10 00:23:33,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 00:23:34,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:34,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 455 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 00:23:34,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:23:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 00:23:34,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:23:36,113 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 222 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 00:23:36,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824989092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:23:36,114 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:23:36,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 9 [2022-01-10 00:23:36,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609397432] [2022-01-10 00:23:36,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:23:36,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 00:23:36,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:36,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 00:23:36,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:23:36,116 INFO L87 Difference]: Start difference. First operand 43162 states and 47797 transitions. Second operand has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2022-01-10 00:23:48,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:23:48,362 INFO L93 Difference]: Finished difference Result 163441 states and 181226 transitions. [2022-01-10 00:23:48,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 00:23:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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 315 [2022-01-10 00:23:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:23:48,495 INFO L225 Difference]: With dead ends: 163441 [2022-01-10 00:23:48,496 INFO L226 Difference]: Without dead ends: 116020 [2022-01-10 00:23:48,514 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 661 GetRequests, 640 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=153, Invalid=353, Unknown=0, NotChecked=0, Total=506 [2022-01-10 00:23:48,515 INFO L933 BasicCegarLoop]: 118 mSDtfsCounter, 13031 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 11677 mSolverCounterSat, 2675 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13031 SdHoareTripleChecker+Valid, 470 SdHoareTripleChecker+Invalid, 14352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2675 IncrementalHoareTripleChecker+Valid, 11677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:23:48,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13031 Valid, 470 Invalid, 14352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2675 Valid, 11677 Invalid, 0 Unknown, 0 Unchecked, 11.1s Time] [2022-01-10 00:23:48,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116020 states. [2022-01-10 00:23:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116020 to 92127. [2022-01-10 00:23:49,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92127 states, 92126 states have (on average 1.1032933156763562) internal successors, (101642), 92126 states have internal predecessors, (101642), 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) [2022-01-10 00:23:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92127 states to 92127 states and 101642 transitions. [2022-01-10 00:23:49,679 INFO L78 Accepts]: Start accepts. Automaton has 92127 states and 101642 transitions. Word has length 315 [2022-01-10 00:23:49,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:23:49,680 INFO L470 AbstractCegarLoop]: Abstraction has 92127 states and 101642 transitions. [2022-01-10 00:23:49,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 89.0) internal successors, (801), 9 states have internal predecessors, (801), 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) [2022-01-10 00:23:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 92127 states and 101642 transitions. [2022-01-10 00:23:49,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-10 00:23:49,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:23:49,685 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:23:49,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 00:23:49,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-01-10 00:23:49,900 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:23:49,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:23:49,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2052661774, now seen corresponding path program 1 times [2022-01-10 00:23:49,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:23:49,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117942880] [2022-01-10 00:23:49,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:49,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:23:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:50,220 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 233 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 00:23:50,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:23:50,220 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117942880] [2022-01-10 00:23:50,220 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117942880] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:23:50,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2073127096] [2022-01-10 00:23:50,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:23:50,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:23:50,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:23:50,226 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) [2022-01-10 00:23:50,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 00:23:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:23:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 00:23:50,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:23:51,723 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 233 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 00:23:51,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:23:53,547 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 233 proven. 82 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-01-10 00:23:53,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2073127096] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:23:53,547 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:23:53,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2022-01-10 00:23:53,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25800710] [2022-01-10 00:23:53,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:23:53,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 00:23:53,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:23:53,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 00:23:53,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:23:53,550 INFO L87 Difference]: Start difference. First operand 92127 states and 101642 transitions. Second operand has 8 states, 8 states have (on average 101.75) internal successors, (814), 7 states have internal predecessors, (814), 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) [2022-01-10 00:24:00,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:00,287 INFO L93 Difference]: Finished difference Result 217453 states and 240266 transitions. [2022-01-10 00:24:00,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-10 00:24:00,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 101.75) internal successors, (814), 7 states have internal predecessors, (814), 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 367 [2022-01-10 00:24:00,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:00,437 INFO L225 Difference]: With dead ends: 217453 [2022-01-10 00:24:00,437 INFO L226 Difference]: Without dead ends: 125753 [2022-01-10 00:24:00,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 736 GetRequests, 729 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:24:00,487 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 2989 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 5537 mSolverCounterSat, 1222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2989 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 6759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1222 IncrementalHoareTripleChecker+Valid, 5537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:00,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2989 Valid, 337 Invalid, 6759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1222 Valid, 5537 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-01-10 00:24:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125753 states. [2022-01-10 00:24:01,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125753 to 109138. [2022-01-10 00:24:01,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109138 states, 109137 states have (on average 1.1063159148593054) internal successors, (120740), 109137 states have internal predecessors, (120740), 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) [2022-01-10 00:24:02,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109138 states to 109138 states and 120740 transitions. [2022-01-10 00:24:02,123 INFO L78 Accepts]: Start accepts. Automaton has 109138 states and 120740 transitions. Word has length 367 [2022-01-10 00:24:02,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:02,123 INFO L470 AbstractCegarLoop]: Abstraction has 109138 states and 120740 transitions. [2022-01-10 00:24:02,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.75) internal successors, (814), 7 states have internal predecessors, (814), 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) [2022-01-10 00:24:02,123 INFO L276 IsEmpty]: Start isEmpty. Operand 109138 states and 120740 transitions. [2022-01-10 00:24:02,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2022-01-10 00:24:02,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:02,127 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:02,143 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 00:24:02,343 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,SelfDestructingSolverStorable12 [2022-01-10 00:24:02,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:02,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:02,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1212771369, now seen corresponding path program 1 times [2022-01-10 00:24:02,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:02,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85941145] [2022-01-10 00:24:02,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:02,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:02,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 298 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-01-10 00:24:02,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:02,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85941145] [2022-01-10 00:24:02,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85941145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:02,463 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:02,463 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:02,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217260799] [2022-01-10 00:24:02,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:02,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:02,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:02,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:02,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:02,465 INFO L87 Difference]: Start difference. First operand 109138 states and 120740 transitions. Second operand has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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) [2022-01-10 00:24:04,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:04,515 INFO L93 Difference]: Finished difference Result 214861 states and 237724 transitions. [2022-01-10 00:24:04,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:04,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.66666666666667) internal successors, (227), 3 states have internal predecessors, (227), 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 389 [2022-01-10 00:24:04,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:04,678 INFO L225 Difference]: With dead ends: 214861 [2022-01-10 00:24:04,678 INFO L226 Difference]: Without dead ends: 106149 [2022-01-10 00:24:04,725 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 [2022-01-10 00:24:04,725 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 481 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 481 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:04,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [481 Valid, 720 Invalid, 1328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 00:24:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106149 states.