/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_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 00:24:45,705 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 00:24:45,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 00:24:45,754 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 00:24:45,784 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 00:24:45,797 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 00:24:45,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 00:24:45,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 00:24:45,798 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 00:24:45,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 00:24:45,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 00:24:45,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 00:24:45,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 00:24:45,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 00:24:45,800 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 00:24:45,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:24:45,801 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 00:24:45,801 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 00:24:45,801 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 00:24:45,966 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 00:24:45,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 00:24:45,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 00:24:46,000 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 00:24:46,001 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 00:24:46,003 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2022-01-10 00:24:46,079 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2201e8d11/9dfdc002994b422aa1dfef659768daec/FLAGeda2974d8 [2022-01-10 00:24:46,531 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 00:24:46,532 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem17_label26.c [2022-01-10 00:24:46,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2201e8d11/9dfdc002994b422aa1dfef659768daec/FLAGeda2974d8 [2022-01-10 00:24:46,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2201e8d11/9dfdc002994b422aa1dfef659768daec [2022-01-10 00:24:46,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 00:24:46,835 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 00:24:46,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:46,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 00:24:46,838 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 00:24:46,839 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:46" (1/1) ... [2022-01-10 00:24:46,840 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4582cdc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:46, skipping insertion in model container [2022-01-10 00:24:46,840 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 12:24:46" (1/1) ... [2022-01-10 00:24:46,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 00:24:46,899 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 00:24:47,094 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_label26.c[4393,4406] [2022-01-10 00:24:47,527 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:47,533 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 00:24:47,559 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_label26.c[4393,4406] [2022-01-10 00:24:47,803 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 00:24:47,815 INFO L208 MainTranslator]: Completed translation [2022-01-10 00:24:47,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47 WrapperNode [2022-01-10 00:24:47,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 00:24:47,818 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:47,818 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 00:24:47,818 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 00:24:47,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:47,874 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,047 INFO L137 Inliner]: procedures = 15, calls = 9, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 2611 [2022-01-10 00:24:48,048 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 00:24:48,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 00:24:48,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 00:24:48,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 00:24:48,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,086 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,339 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 00:24:48,368 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 00:24:48,368 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 00:24:48,368 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 00:24:48,369 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (1/1) ... [2022-01-10 00:24:48,375 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 00:24:48,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:24:48,406 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 00:24:48,415 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 00:24:48,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 00:24:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 00:24:48,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 00:24:48,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 00:24:48,528 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 00:24:48,529 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 00:24:50,625 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 00:24:50,640 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 00:24:50,640 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 00:24:50,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:50 BoogieIcfgContainer [2022-01-10 00:24:50,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 00:24:50,645 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 00:24:50,645 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 00:24:50,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 00:24:50,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 12:24:46" (1/3) ... [2022-01-10 00:24:50,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7238ebef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:50, skipping insertion in model container [2022-01-10 00:24:50,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 12:24:47" (2/3) ... [2022-01-10 00:24:50,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7238ebef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 12:24:50, skipping insertion in model container [2022-01-10 00:24:50,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 12:24:50" (3/3) ... [2022-01-10 00:24:50,651 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label26.c [2022-01-10 00:24:50,655 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 00:24:50,655 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 00:24:50,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 00:24:50,712 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 00:24:50,713 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 00:24:50,735 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 00:24:50,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-10 00:24:50,740 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:50,740 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:24:50,741 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:50,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:50,785 INFO L85 PathProgramCache]: Analyzing trace with hash -716875070, now seen corresponding path program 1 times [2022-01-10 00:24:50,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:50,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167783159] [2022-01-10 00:24:50,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:50,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:51,014 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 00:24:51,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:51,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167783159] [2022-01-10 00:24:51,016 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167783159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:51,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:51,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:51,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874451379] [2022-01-10 00:24:51,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:51,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:51,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:51,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:51,047 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 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 00:24:53,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:53,317 INFO L93 Difference]: Finished difference Result 1642 states and 3024 transitions. [2022-01-10 00:24:53,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:53,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 28 [2022-01-10 00:24:53,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:53,356 INFO L225 Difference]: With dead ends: 1642 [2022-01-10 00:24:53,356 INFO L226 Difference]: Without dead ends: 975 [2022-01-10 00:24:53,366 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 00:24:53,378 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 462 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 1413 mSolverCounterSat, 372 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1785 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 372 IncrementalHoareTripleChecker+Valid, 1413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:53,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 550 Invalid, 1785 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [372 Valid, 1413 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:24:53,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-10 00:24:53,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 972. [2022-01-10 00:24:53,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 971 states have (on average 1.5077239958805355) internal successors, (1464), 971 states have internal predecessors, (1464), 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 00:24:53,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1464 transitions. [2022-01-10 00:24:53,430 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1464 transitions. Word has length 28 [2022-01-10 00:24:53,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:53,430 INFO L470 AbstractCegarLoop]: Abstraction has 972 states and 1464 transitions. [2022-01-10 00:24:53,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 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 00:24:53,431 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1464 transitions. [2022-01-10 00:24:53,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-10 00:24:53,433 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:53,433 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:24:53,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 00:24:53,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:53,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:53,434 INFO L85 PathProgramCache]: Analyzing trace with hash 176078254, now seen corresponding path program 1 times [2022-01-10 00:24:53,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:53,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984237834] [2022-01-10 00:24:53,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:53,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:53,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:53,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:53,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984237834] [2022-01-10 00:24:53,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984237834] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:53,511 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:53,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:53,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776018824] [2022-01-10 00:24:53,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:53,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:53,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:53,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:53,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:53,513 INFO L87 Difference]: Start difference. First operand 972 states and 1464 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:55,320 INFO L93 Difference]: Finished difference Result 2814 states and 4242 transitions. [2022-01-10 00:24:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 98 [2022-01-10 00:24:55,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:55,328 INFO L225 Difference]: With dead ends: 2814 [2022-01-10 00:24:55,328 INFO L226 Difference]: Without dead ends: 1844 [2022-01-10 00:24:55,333 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 00:24:55,335 INFO L933 BasicCegarLoop]: 853 mSDtfsCounter, 463 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 1283 mSolverCounterSat, 414 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 463 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 1697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 414 IncrementalHoareTripleChecker+Valid, 1283 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:55,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [463 Valid, 921 Invalid, 1697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [414 Valid, 1283 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:24:55,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1844 states. [2022-01-10 00:24:55,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1844 to 1842. [2022-01-10 00:24:55,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1842 states, 1841 states have (on average 1.3601303639326452) internal successors, (2504), 1841 states have internal predecessors, (2504), 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 00:24:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1842 states to 1842 states and 2504 transitions. [2022-01-10 00:24:55,377 INFO L78 Accepts]: Start accepts. Automaton has 1842 states and 2504 transitions. Word has length 98 [2022-01-10 00:24:55,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:55,379 INFO L470 AbstractCegarLoop]: Abstraction has 1842 states and 2504 transitions. [2022-01-10 00:24:55,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 00:24:55,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1842 states and 2504 transitions. [2022-01-10 00:24:55,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-01-10 00:24:55,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:55,385 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 00:24:55,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 00:24:55,385 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:55,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:55,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1322137327, now seen corresponding path program 1 times [2022-01-10 00:24:55,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:55,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602990528] [2022-01-10 00:24:55,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:55,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:55,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:55,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602990528] [2022-01-10 00:24:55,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602990528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:55,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:55,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 00:24:55,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461107640] [2022-01-10 00:24:55,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:55,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:55,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:55,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:55,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:55,522 INFO L87 Difference]: Start difference. First operand 1842 states and 2504 transitions. Second operand has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 00:24:57,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:57,148 INFO L93 Difference]: Finished difference Result 5395 states and 7326 transitions. [2022-01-10 00:24:57,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:57,148 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 120 [2022-01-10 00:24:57,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:57,155 INFO L225 Difference]: With dead ends: 5395 [2022-01-10 00:24:57,155 INFO L226 Difference]: Without dead ends: 2701 [2022-01-10 00:24:57,157 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 00:24:57,158 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 368 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 1081 mSolverCounterSat, 548 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 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, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:24:57,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [368 Valid, 591 Invalid, 1629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [548 Valid, 1081 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:24:57,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-10 00:24:57,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-01-10 00:24:57,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2700 states have (on average 1.191851851851852) internal successors, (3218), 2700 states have internal predecessors, (3218), 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 00:24:57,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 3218 transitions. [2022-01-10 00:24:57,186 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 3218 transitions. Word has length 120 [2022-01-10 00:24:57,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:57,186 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 3218 transitions. [2022-01-10 00:24:57,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.0) internal successors, (120), 2 states have internal predecessors, (120), 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 00:24:57,187 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 3218 transitions. [2022-01-10 00:24:57,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-10 00:24:57,188 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:57,188 INFO L514 BasicCegarLoop]: trace histogram [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, 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 00:24:57,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 00:24:57,188 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:57,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:57,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1416376421, now seen corresponding path program 1 times [2022-01-10 00:24:57,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:57,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025160581] [2022-01-10 00:24:57,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:57,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:57,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:57,296 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 119 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:24:57,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:57,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025160581] [2022-01-10 00:24:57,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025160581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:57,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:57,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:57,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975211357] [2022-01-10 00:24:57,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:57,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:57,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:57,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:57,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:57,299 INFO L87 Difference]: Start difference. First operand 2701 states and 3218 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:24:58,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:24:58,644 INFO L93 Difference]: Finished difference Result 7108 states and 8598 transitions. [2022-01-10 00:24:58,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:24:58,645 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 180 [2022-01-10 00:24:58,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:24:58,656 INFO L225 Difference]: With dead ends: 7108 [2022-01-10 00:24:58,657 INFO L226 Difference]: Without dead ends: 4409 [2022-01-10 00:24:58,660 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 00:24:58,661 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 00:24:58,661 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 00:24:58,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4409 states. [2022-01-10 00:24:58,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4409 to 4409. [2022-01-10 00:24:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4409 states, 4408 states have (on average 1.1705989110707804) internal successors, (5160), 4408 states have internal predecessors, (5160), 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 00:24:58,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4409 states to 4409 states and 5160 transitions. [2022-01-10 00:24:58,710 INFO L78 Accepts]: Start accepts. Automaton has 4409 states and 5160 transitions. Word has length 180 [2022-01-10 00:24:58,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:24:58,711 INFO L470 AbstractCegarLoop]: Abstraction has 4409 states and 5160 transitions. [2022-01-10 00:24:58,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 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 00:24:58,711 INFO L276 IsEmpty]: Start isEmpty. Operand 4409 states and 5160 transitions. [2022-01-10 00:24:58,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 00:24:58,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:24:58,712 INFO L514 BasicCegarLoop]: trace histogram [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, 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 00:24:58,712 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 00:24:58,712 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:24:58,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:24:58,713 INFO L85 PathProgramCache]: Analyzing trace with hash 744727648, now seen corresponding path program 1 times [2022-01-10 00:24:58,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:24:58,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215818333] [2022-01-10 00:24:58,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:24:58,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:24:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:24:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-01-10 00:24:58,781 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:24:58,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215818333] [2022-01-10 00:24:58,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215818333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:24:58,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:24:58,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:24:58,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886598829] [2022-01-10 00:24:58,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:24:58,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:24:58,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:24:58,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:24:58,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:24:58,783 INFO L87 Difference]: Start difference. First operand 4409 states and 5160 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 00:25:00,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:00,362 INFO L93 Difference]: Finished difference Result 10936 states and 12970 transitions. [2022-01-10 00:25:00,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:00,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 182 [2022-01-10 00:25:00,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:00,383 INFO L225 Difference]: With dead ends: 10936 [2022-01-10 00:25:00,383 INFO L226 Difference]: Without dead ends: 6528 [2022-01-10 00:25:00,389 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 00:25:00,390 INFO L933 BasicCegarLoop]: 382 mSDtfsCounter, 423 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 1215 mSolverCounterSat, 274 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 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 00:25:00,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 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 00:25:00,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2022-01-10 00:25:00,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 4382. [2022-01-10 00:25:00,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4382 states, 4381 states have (on average 1.1684546907098836) internal successors, (5119), 4381 states have internal predecessors, (5119), 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 00:25:00,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4382 states to 4382 states and 5119 transitions. [2022-01-10 00:25:00,485 INFO L78 Accepts]: Start accepts. Automaton has 4382 states and 5119 transitions. Word has length 182 [2022-01-10 00:25:00,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:00,486 INFO L470 AbstractCegarLoop]: Abstraction has 4382 states and 5119 transitions. [2022-01-10 00:25:00,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 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 00:25:00,486 INFO L276 IsEmpty]: Start isEmpty. Operand 4382 states and 5119 transitions. [2022-01-10 00:25:00,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2022-01-10 00:25:00,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:00,488 INFO L514 BasicCegarLoop]: trace histogram [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, 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] [2022-01-10 00:25:00,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 00:25:00,489 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:00,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:00,490 INFO L85 PathProgramCache]: Analyzing trace with hash -929604570, now seen corresponding path program 1 times [2022-01-10 00:25:00,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:00,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304762049] [2022-01-10 00:25:00,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:00,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:00,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:00,714 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:25:00,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304762049] [2022-01-10 00:25:00,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304762049] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:00,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1874515838] [2022-01-10 00:25:00,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:00,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:00,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:00,717 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 00:25:00,752 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 00:25:00,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:00,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:25:00,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:01,532 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 51 proven. 82 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:25:01,532 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:25:01,980 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 133 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:25:01,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1874515838] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:01,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:25:01,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:25:01,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050743171] [2022-01-10 00:25:01,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:01,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:01,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:01,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:01,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:25:01,982 INFO L87 Difference]: Start difference. First operand 4382 states and 5119 transitions. Second operand has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 00:25:04,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:04,618 INFO L93 Difference]: Finished difference Result 15171 states and 17882 transitions. [2022-01-10 00:25:04,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:04,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 248 [2022-01-10 00:25:04,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:04,643 INFO L225 Difference]: With dead ends: 15171 [2022-01-10 00:25:04,643 INFO L226 Difference]: Without dead ends: 10791 [2022-01-10 00:25:04,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 497 GetRequests, 491 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:25:04,650 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 980 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 1022 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 3193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1022 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:04,650 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 145 Invalid, 3193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1022 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-10 00:25:04,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10791 states. [2022-01-10 00:25:04,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10791 to 10789. [2022-01-10 00:25:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10789 states, 10788 states have (on average 1.1710233592880979) internal successors, (12633), 10788 states have internal predecessors, (12633), 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 00:25:04,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10789 states to 10789 states and 12633 transitions. [2022-01-10 00:25:04,799 INFO L78 Accepts]: Start accepts. Automaton has 10789 states and 12633 transitions. Word has length 248 [2022-01-10 00:25:04,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:04,799 INFO L470 AbstractCegarLoop]: Abstraction has 10789 states and 12633 transitions. [2022-01-10 00:25:04,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 62.0) internal successors, (248), 3 states have internal predecessors, (248), 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 00:25:04,800 INFO L276 IsEmpty]: Start isEmpty. Operand 10789 states and 12633 transitions. [2022-01-10 00:25:04,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2022-01-10 00:25:04,802 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:04,802 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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 00:25:04,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 00:25:05,015 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,SelfDestructingSolverStorable5 [2022-01-10 00:25:05,016 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:05,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:05,016 INFO L85 PathProgramCache]: Analyzing trace with hash -2024788157, now seen corresponding path program 1 times [2022-01-10 00:25:05,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:05,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239425271] [2022-01-10 00:25:05,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:05,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:05,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:05,137 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 184 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 00:25:05,137 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:05,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239425271] [2022-01-10 00:25:05,138 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239425271] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:05,138 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:05,138 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:05,138 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979911115] [2022-01-10 00:25:05,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:05,139 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:05,139 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:05,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:05,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:05,140 INFO L87 Difference]: Start difference. First operand 10789 states and 12633 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 00:25:06,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:06,794 INFO L93 Difference]: Finished difference Result 23703 states and 27793 transitions. [2022-01-10 00:25:06,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:06,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 260 [2022-01-10 00:25:06,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:06,817 INFO L225 Difference]: With dead ends: 23703 [2022-01-10 00:25:06,818 INFO L226 Difference]: Without dead ends: 12491 [2022-01-10 00:25:06,827 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 00:25:06,828 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 383 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 1194 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 842 SdHoareTripleChecker+Invalid, 1400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:06,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 842 Invalid, 1400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1194 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-10 00:25:06,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-01-10 00:25:06,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12491. [2022-01-10 00:25:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12491 states, 12490 states have (on average 1.1501200960768614) internal successors, (14365), 12490 states have internal predecessors, (14365), 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 00:25:07,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12491 states to 12491 states and 14365 transitions. [2022-01-10 00:25:07,022 INFO L78 Accepts]: Start accepts. Automaton has 12491 states and 14365 transitions. Word has length 260 [2022-01-10 00:25:07,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:07,023 INFO L470 AbstractCegarLoop]: Abstraction has 12491 states and 14365 transitions. [2022-01-10 00:25:07,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 00:25:07,023 INFO L276 IsEmpty]: Start isEmpty. Operand 12491 states and 14365 transitions. [2022-01-10 00:25:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 301 [2022-01-10 00:25:07,026 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:07,026 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:07,026 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 00:25:07,027 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:07,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:07,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1710928730, now seen corresponding path program 1 times [2022-01-10 00:25:07,027 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:07,027 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034896527] [2022-01-10 00:25:07,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:07,027 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:07,129 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-01-10 00:25:07,129 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:07,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034896527] [2022-01-10 00:25:07,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034896527] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:07,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:07,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:07,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562174135] [2022-01-10 00:25:07,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:07,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:07,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:07,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:07,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:07,130 INFO L87 Difference]: Start difference. First operand 12491 states and 14365 transitions. Second operand has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 00:25:08,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:08,688 INFO L93 Difference]: Finished difference Result 27534 states and 31665 transitions. [2022-01-10 00:25:08,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:08,688 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 300 [2022-01-10 00:25:08,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:08,710 INFO L225 Difference]: With dead ends: 27534 [2022-01-10 00:25:08,711 INFO L226 Difference]: Without dead ends: 14611 [2022-01-10 00:25:08,722 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 00:25:08,722 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 464 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 1207 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 354 SdHoareTripleChecker+Invalid, 1482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 1207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:08,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 354 Invalid, 1482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 1207 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-10 00:25:08,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14611 states. [2022-01-10 00:25:09,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14611 to 14182. [2022-01-10 00:25:09,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14182 states, 14181 states have (on average 1.1389887878146816) internal successors, (16152), 14181 states have internal predecessors, (16152), 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 00:25:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14182 states to 14182 states and 16152 transitions. [2022-01-10 00:25:09,065 INFO L78 Accepts]: Start accepts. Automaton has 14182 states and 16152 transitions. Word has length 300 [2022-01-10 00:25:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:09,066 INFO L470 AbstractCegarLoop]: Abstraction has 14182 states and 16152 transitions. [2022-01-10 00:25:09,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.333333333333336) internal successors, (136), 3 states have internal predecessors, (136), 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 00:25:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 14182 states and 16152 transitions. [2022-01-10 00:25:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2022-01-10 00:25:09,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:09,070 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 00:25:09,071 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:09,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:09,087 INFO L85 PathProgramCache]: Analyzing trace with hash 335207748, now seen corresponding path program 1 times [2022-01-10 00:25:09,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:09,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425947722] [2022-01-10 00:25:09,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:09,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:09,305 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 00:25:09,306 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:09,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425947722] [2022-01-10 00:25:09,306 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [425947722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:09,306 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:09,306 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:09,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215511540] [2022-01-10 00:25:09,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:09,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:09,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:09,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:09,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:09,310 INFO L87 Difference]: Start difference. First operand 14182 states and 16152 transitions. Second operand has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 00:25:10,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:10,998 INFO L93 Difference]: Finished difference Result 37316 states and 42354 transitions. [2022-01-10 00:25:10,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:10,999 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 322 [2022-01-10 00:25:10,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:11,030 INFO L225 Difference]: With dead ends: 37316 [2022-01-10 00:25:11,030 INFO L226 Difference]: Without dead ends: 23136 [2022-01-10 00:25:11,044 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 00:25:11,045 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 322 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 1351 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 825 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:11,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [322 Valid, 825 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1351 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:25:11,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23136 states. [2022-01-10 00:25:11,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23136 to 21418. [2022-01-10 00:25:11,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21418 states, 21417 states have (on average 1.120885278050147) internal successors, (24006), 21417 states have internal predecessors, (24006), 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 00:25:11,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21418 states to 21418 states and 24006 transitions. [2022-01-10 00:25:11,278 INFO L78 Accepts]: Start accepts. Automaton has 21418 states and 24006 transitions. Word has length 322 [2022-01-10 00:25:11,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:11,278 INFO L470 AbstractCegarLoop]: Abstraction has 21418 states and 24006 transitions. [2022-01-10 00:25:11,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 83.33333333333333) internal successors, (250), 3 states have internal predecessors, (250), 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 00:25:11,279 INFO L276 IsEmpty]: Start isEmpty. Operand 21418 states and 24006 transitions. [2022-01-10 00:25:11,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2022-01-10 00:25:11,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:11,283 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:11,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 00:25:11,283 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:11,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:11,284 INFO L85 PathProgramCache]: Analyzing trace with hash 185029324, now seen corresponding path program 1 times [2022-01-10 00:25:11,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:11,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554809860] [2022-01-10 00:25:11,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:11,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:11,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:11,399 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:11,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554809860] [2022-01-10 00:25:11,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554809860] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:11,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616035773] [2022-01-10 00:25:11,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:11,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:11,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:11,401 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 00:25:11,402 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 00:25:11,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:11,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 00:25:11,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 212 proven. 78 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:12,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:25:12,748 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 290 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:12,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616035773] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:12,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-10 00:25:12,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3, 3] total 5 [2022-01-10 00:25:12,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391103178] [2022-01-10 00:25:12,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:12,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:12,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:12,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:12,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:25:12,750 INFO L87 Difference]: Start difference. First operand 21418 states and 24006 transitions. Second operand has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 00:25:15,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:15,886 INFO L93 Difference]: Finished difference Result 51365 states and 57788 transitions. [2022-01-10 00:25:15,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:15,887 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 327 [2022-01-10 00:25:15,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:15,925 INFO L225 Difference]: With dead ends: 51365 [2022-01-10 00:25:15,925 INFO L226 Difference]: Without dead ends: 29521 [2022-01-10 00:25:15,943 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 655 GetRequests, 649 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2022-01-10 00:25:15,943 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 891 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 2274 mSolverCounterSat, 584 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 891 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 2858 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 584 IncrementalHoareTripleChecker+Valid, 2274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:15,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [891 Valid, 175 Invalid, 2858 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [584 Valid, 2274 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-10 00:25:15,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29521 states. [2022-01-10 00:25:16,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29521 to 28244. [2022-01-10 00:25:16,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28244 states, 28243 states have (on average 1.1312537619941225) internal successors, (31950), 28243 states have internal predecessors, (31950), 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 00:25:16,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28244 states to 28244 states and 31950 transitions. [2022-01-10 00:25:16,223 INFO L78 Accepts]: Start accepts. Automaton has 28244 states and 31950 transitions. Word has length 327 [2022-01-10 00:25:16,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:16,223 INFO L470 AbstractCegarLoop]: Abstraction has 28244 states and 31950 transitions. [2022-01-10 00:25:16,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 75.5) internal successors, (302), 3 states have internal predecessors, (302), 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 00:25:16,224 INFO L276 IsEmpty]: Start isEmpty. Operand 28244 states and 31950 transitions. [2022-01-10 00:25:16,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2022-01-10 00:25:16,228 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:16,228 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:16,247 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 00:25:16,447 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,SelfDestructingSolverStorable9 [2022-01-10 00:25:16,447 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:16,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:16,447 INFO L85 PathProgramCache]: Analyzing trace with hash 182989261, now seen corresponding path program 1 times [2022-01-10 00:25:16,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:16,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136111458] [2022-01-10 00:25:16,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:16,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:16,606 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:16,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:16,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136111458] [2022-01-10 00:25:16,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136111458] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:16,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1826668808] [2022-01-10 00:25:16,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:16,606 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:16,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:16,612 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:25:16,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 00:25:16,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:16,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 00:25:16,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:18,429 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:18,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 00:25:19,665 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 238 proven. 82 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:19,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1826668808] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 00:25:19,665 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 00:25:19,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 3, 3] total 8 [2022-01-10 00:25:19,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [629074445] [2022-01-10 00:25:19,666 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 00:25:19,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 00:25:19,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:19,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 00:25:19,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-01-10 00:25:19,668 INFO L87 Difference]: Start difference. First operand 28244 states and 31950 transitions. Second operand has 9 states, 9 states have (on average 67.77777777777777) internal successors, (610), 8 states have internal predecessors, (610), 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 00:25:24,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:24,760 INFO L93 Difference]: Finished difference Result 64690 states and 72502 transitions. [2022-01-10 00:25:24,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 00:25:24,760 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 67.77777777777777) internal successors, (610), 8 states have internal predecessors, (610), 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 340 [2022-01-10 00:25:24,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:24,815 INFO L225 Difference]: With dead ends: 64690 [2022-01-10 00:25:24,816 INFO L226 Difference]: Without dead ends: 36023 [2022-01-10 00:25:24,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 686 GetRequests, 675 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-10 00:25:24,828 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 2659 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 6381 mSolverCounterSat, 439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 8745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 439 IncrementalHoareTripleChecker+Valid, 6381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1925 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:24,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 518 Invalid, 8745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [439 Valid, 6381 Invalid, 0 Unknown, 1925 Unchecked, 4.8s Time] [2022-01-10 00:25:24,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36023 states. [2022-01-10 00:25:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36023 to 33024. [2022-01-10 00:25:25,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33024 states, 33023 states have (on average 1.1206734700057535) internal successors, (37008), 33023 states have internal predecessors, (37008), 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 00:25:25,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33024 states to 33024 states and 37008 transitions. [2022-01-10 00:25:25,484 INFO L78 Accepts]: Start accepts. Automaton has 33024 states and 37008 transitions. Word has length 340 [2022-01-10 00:25:25,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:25,484 INFO L470 AbstractCegarLoop]: Abstraction has 33024 states and 37008 transitions. [2022-01-10 00:25:25,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.77777777777777) internal successors, (610), 8 states have internal predecessors, (610), 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 00:25:25,484 INFO L276 IsEmpty]: Start isEmpty. Operand 33024 states and 37008 transitions. [2022-01-10 00:25:25,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2022-01-10 00:25:25,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:25,491 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:25:25,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 00:25:25,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:25,700 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:25,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:25,700 INFO L85 PathProgramCache]: Analyzing trace with hash -202956488, now seen corresponding path program 1 times [2022-01-10 00:25:25,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:25,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148115595] [2022-01-10 00:25:25,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:25,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:25,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 00:25:25,841 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:25,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148115595] [2022-01-10 00:25:25,841 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148115595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:25,841 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:25,841 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:25,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375591167] [2022-01-10 00:25:25,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:25,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:25,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:25,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:25,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 00:25:25,842 INFO L87 Difference]: Start difference. First operand 33024 states and 37008 transitions. Second operand has 4 states, 4 states have (on average 91.75) internal successors, (367), 3 states have internal predecessors, (367), 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 00:25:28,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:28,098 INFO L93 Difference]: Finished difference Result 68491 states and 76657 transitions. [2022-01-10 00:25:28,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:28,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 3 states have internal predecessors, (367), 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 00:25:28,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:28,134 INFO L225 Difference]: With dead ends: 68491 [2022-01-10 00:25:28,135 INFO L226 Difference]: Without dead ends: 35574 [2022-01-10 00:25:28,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 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 00:25:28,153 INFO L933 BasicCegarLoop]: 136 mSDtfsCounter, 595 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 2328 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 595 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 2610 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 2328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:28,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [595 Valid, 247 Invalid, 2610 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 2328 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 00:25:28,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35574 states. [2022-01-10 00:25:28,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35574 to 33024. [2022-01-10 00:25:28,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33024 states, 33023 states have (on average 1.1206431880810344) internal successors, (37007), 33023 states have internal predecessors, (37007), 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 00:25:28,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33024 states to 33024 states and 37007 transitions. [2022-01-10 00:25:28,493 INFO L78 Accepts]: Start accepts. Automaton has 33024 states and 37007 transitions. Word has length 367 [2022-01-10 00:25:28,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:28,494 INFO L470 AbstractCegarLoop]: Abstraction has 33024 states and 37007 transitions. [2022-01-10 00:25:28,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.75) internal successors, (367), 3 states have internal predecessors, (367), 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 00:25:28,494 INFO L276 IsEmpty]: Start isEmpty. Operand 33024 states and 37007 transitions. [2022-01-10 00:25:28,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2022-01-10 00:25:28,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:28,498 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:28,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 00:25:28,498 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:28,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:28,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1005236947, now seen corresponding path program 1 times [2022-01-10 00:25:28,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:28,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786674975] [2022-01-10 00:25:28,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:28,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:28,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 283 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-01-10 00:25:28,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:28,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786674975] [2022-01-10 00:25:28,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786674975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:28,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:28,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738009756] [2022-01-10 00:25:28,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:28,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:28,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:28,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:28,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:28,760 INFO L87 Difference]: Start difference. First operand 33024 states and 37007 transitions. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 00:25:30,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:30,599 INFO L93 Difference]: Finished difference Result 81725 states and 92143 transitions. [2022-01-10 00:25:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 383 [2022-01-10 00:25:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:30,719 INFO L225 Difference]: With dead ends: 81725 [2022-01-10 00:25:30,720 INFO L226 Difference]: Without dead ends: 48804 [2022-01-10 00:25:30,743 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 00:25:30,744 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 370 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 1310 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:30,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 275 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1310 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:25:30,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48804 states. [2022-01-10 00:25:31,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48804 to 47503. [2022-01-10 00:25:31,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47503 states, 47502 states have (on average 1.1183739632015495) internal successors, (53125), 47502 states have internal predecessors, (53125), 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 00:25:31,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47503 states to 47503 states and 53125 transitions. [2022-01-10 00:25:31,330 INFO L78 Accepts]: Start accepts. Automaton has 47503 states and 53125 transitions. Word has length 383 [2022-01-10 00:25:31,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:31,331 INFO L470 AbstractCegarLoop]: Abstraction has 47503 states and 53125 transitions. [2022-01-10 00:25:31,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 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 00:25:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand 47503 states and 53125 transitions. [2022-01-10 00:25:31,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2022-01-10 00:25:31,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:31,337 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:31,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 00:25:31,338 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:31,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:31,338 INFO L85 PathProgramCache]: Analyzing trace with hash -166528410, now seen corresponding path program 1 times [2022-01-10 00:25:31,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:31,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727455058] [2022-01-10 00:25:31,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:31,338 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:31,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:31,638 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 511 proven. 80 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:31,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727455058] [2022-01-10 00:25:31,639 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727455058] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:31,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545274580] [2022-01-10 00:25:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:31,639 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:31,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:31,656 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:25:31,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-10 00:25:31,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:31,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-10 00:25:31,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 591 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:32,590 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 00:25:32,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545274580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:32,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 00:25:32,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 8 [2022-01-10 00:25:32,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050362464] [2022-01-10 00:25:32,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:32,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 00:25:32,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:32,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 00:25:32,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:25:32,592 INFO L87 Difference]: Start difference. First operand 47503 states and 53125 transitions. Second operand has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 00:25:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:34,669 INFO L93 Difference]: Finished difference Result 96599 states and 107913 transitions. [2022-01-10 00:25:34,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 00:25:34,669 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 422 [2022-01-10 00:25:34,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:34,732 INFO L225 Difference]: With dead ends: 96599 [2022-01-10 00:25:34,732 INFO L226 Difference]: Without dead ends: 49628 [2022-01-10 00:25:34,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 427 GetRequests, 421 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-10 00:25:34,760 INFO L933 BasicCegarLoop]: 250 mSDtfsCounter, 803 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 265 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 2413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 265 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:34,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 355 Invalid, 2413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [265 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 00:25:34,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49628 states. [2022-01-10 00:25:35,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49628 to 48778. [2022-01-10 00:25:35,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48778 states, 48777 states have (on average 1.1159357894089428) internal successors, (54432), 48777 states have internal predecessors, (54432), 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 00:25:35,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48778 states to 48778 states and 54432 transitions. [2022-01-10 00:25:35,484 INFO L78 Accepts]: Start accepts. Automaton has 48778 states and 54432 transitions. Word has length 422 [2022-01-10 00:25:35,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:35,484 INFO L470 AbstractCegarLoop]: Abstraction has 48778 states and 54432 transitions. [2022-01-10 00:25:35,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 99.25) internal successors, (397), 4 states have internal predecessors, (397), 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 00:25:35,484 INFO L276 IsEmpty]: Start isEmpty. Operand 48778 states and 54432 transitions. [2022-01-10 00:25:35,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 429 [2022-01-10 00:25:35,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:35,491 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-01-10 00:25:35,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-10 00:25:35,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:35,708 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:35,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:35,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1024507897, now seen corresponding path program 1 times [2022-01-10 00:25:35,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:35,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901476807] [2022-01-10 00:25:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:35,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:35,942 INFO L134 CoverageAnalysis]: Checked inductivity of 610 backedges. 503 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 00:25:35,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:35,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901476807] [2022-01-10 00:25:35,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901476807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:35,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:35,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:35,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546224345] [2022-01-10 00:25:35,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:35,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:35,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:35,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:35,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:35,944 INFO L87 Difference]: Start difference. First operand 48778 states and 54432 transitions. Second operand has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 00:25:38,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:38,018 INFO L93 Difference]: Finished difference Result 114475 states and 127617 transitions. [2022-01-10 00:25:38,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:38,019 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 428 [2022-01-10 00:25:38,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:38,092 INFO L225 Difference]: With dead ends: 114475 [2022-01-10 00:25:38,092 INFO L226 Difference]: Without dead ends: 64091 [2022-01-10 00:25:38,109 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 00:25:38,110 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 446 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 1489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:38,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 604 Invalid, 1489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:25:38,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64091 states. [2022-01-10 00:25:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64091 to 59397. [2022-01-10 00:25:38,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59397 states, 59396 states have (on average 1.1050575796349922) internal successors, (65636), 59396 states have internal predecessors, (65636), 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 00:25:38,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59397 states to 59397 states and 65636 transitions. [2022-01-10 00:25:38,895 INFO L78 Accepts]: Start accepts. Automaton has 59397 states and 65636 transitions. Word has length 428 [2022-01-10 00:25:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:38,896 INFO L470 AbstractCegarLoop]: Abstraction has 59397 states and 65636 transitions. [2022-01-10 00:25:38,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 107.66666666666667) internal successors, (323), 3 states have internal predecessors, (323), 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 00:25:38,896 INFO L276 IsEmpty]: Start isEmpty. Operand 59397 states and 65636 transitions. [2022-01-10 00:25:38,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 453 [2022-01-10 00:25:38,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:38,921 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 00:25:38,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 00:25:38,921 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:38,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:38,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1533610740, now seen corresponding path program 1 times [2022-01-10 00:25:38,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:38,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422705885] [2022-01-10 00:25:38,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:38,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:39,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:39,111 INFO L134 CoverageAnalysis]: Checked inductivity of 628 backedges. 389 proven. 0 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2022-01-10 00:25:39,111 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:39,111 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422705885] [2022-01-10 00:25:39,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422705885] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:39,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:39,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:39,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874393712] [2022-01-10 00:25:39,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:39,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:39,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:39,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:39,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:39,113 INFO L87 Difference]: Start difference. First operand 59397 states and 65636 transitions. Second operand has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 00:25:41,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:41,178 INFO L93 Difference]: Finished difference Result 136578 states and 150995 transitions. [2022-01-10 00:25:41,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:41,179 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 452 [2022-01-10 00:25:41,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:41,277 INFO L225 Difference]: With dead ends: 136578 [2022-01-10 00:25:41,278 INFO L226 Difference]: Without dead ends: 78138 [2022-01-10 00:25:41,315 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 00:25:41,315 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 383 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 216 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 383 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 1442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 216 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:41,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [383 Valid, 249 Invalid, 1442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [216 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 00:25:41,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78138 states. [2022-01-10 00:25:42,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78138 to 74707. [2022-01-10 00:25:42,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74707 states, 74706 states have (on average 1.0994431504832276) internal successors, (82135), 74706 states have internal predecessors, (82135), 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 00:25:42,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74707 states to 74707 states and 82135 transitions. [2022-01-10 00:25:42,501 INFO L78 Accepts]: Start accepts. Automaton has 74707 states and 82135 transitions. Word has length 452 [2022-01-10 00:25:42,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:42,501 INFO L470 AbstractCegarLoop]: Abstraction has 74707 states and 82135 transitions. [2022-01-10 00:25:42,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 97.66666666666667) internal successors, (293), 3 states have internal predecessors, (293), 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 00:25:42,501 INFO L276 IsEmpty]: Start isEmpty. Operand 74707 states and 82135 transitions. [2022-01-10 00:25:42,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 454 [2022-01-10 00:25:42,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:42,508 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2022-01-10 00:25:42,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 00:25:42,508 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:42,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:42,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1646221535, now seen corresponding path program 1 times [2022-01-10 00:25:42,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:42,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576029207] [2022-01-10 00:25:42,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:42,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:42,663 INFO L134 CoverageAnalysis]: Checked inductivity of 389 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2022-01-10 00:25:42,664 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:42,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576029207] [2022-01-10 00:25:42,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576029207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 00:25:42,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 00:25:42,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 00:25:42,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485412230] [2022-01-10 00:25:42,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 00:25:42,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 00:25:42,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 00:25:42,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 00:25:42,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 00:25:42,665 INFO L87 Difference]: Start difference. First operand 74707 states and 82135 transitions. Second operand has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 00:25:44,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 00:25:44,863 INFO L93 Difference]: Finished difference Result 171032 states and 188052 transitions. [2022-01-10 00:25:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 00:25:44,863 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 453 [2022-01-10 00:25:44,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 00:25:44,976 INFO L225 Difference]: With dead ends: 171032 [2022-01-10 00:25:44,976 INFO L226 Difference]: Without dead ends: 96853 [2022-01-10 00:25:45,006 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 00:25:45,007 INFO L933 BasicCegarLoop]: 151 mSDtfsCounter, 479 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 1250 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 1509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 00:25:45,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 194 Invalid, 1509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1250 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 00:25:45,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96853 states. [2022-01-10 00:25:46,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96853 to 95551. [2022-01-10 00:25:46,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95551 states, 95550 states have (on average 1.0967974882260596) internal successors, (104799), 95550 states have internal predecessors, (104799), 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 00:25:46,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95551 states to 95551 states and 104799 transitions. [2022-01-10 00:25:46,167 INFO L78 Accepts]: Start accepts. Automaton has 95551 states and 104799 transitions. Word has length 453 [2022-01-10 00:25:46,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 00:25:46,167 INFO L470 AbstractCegarLoop]: Abstraction has 95551 states and 104799 transitions. [2022-01-10 00:25:46,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 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 00:25:46,168 INFO L276 IsEmpty]: Start isEmpty. Operand 95551 states and 104799 transitions. [2022-01-10 00:25:46,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 466 [2022-01-10 00:25:46,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 00:25:46,333 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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 00:25:46,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 00:25:46,334 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 00:25:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 00:25:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash -2101201011, now seen corresponding path program 1 times [2022-01-10 00:25:46,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 00:25:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007510218] [2022-01-10 00:25:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:46,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 00:25:46,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 554 proven. 103 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:46,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 00:25:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007510218] [2022-01-10 00:25:46,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007510218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 00:25:46,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099214815] [2022-01-10 00:25:46,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 00:25:46,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 00:25:46,608 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 00:25:46,608 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 00:25:46,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-10 00:25:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 00:25:46,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 629 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 00:25:46,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 00:25:48,423 INFO L134 CoverageAnalysis]: Checked inductivity of 683 backedges. 388 proven. 269 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 00:25:48,423 INFO L328 TraceCheckSpWp]: Computing backward predicates...