/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/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/psyco/psyco_abp_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 23:18:14,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 23:18:14,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 23:18:15,036 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 23:18:15,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 23:18:15,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 23:18:15,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 23:18:15,066 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 23:18:15,067 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 23:18:15,067 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 23:18:15,070 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 23:18:15,075 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 23:18:15,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 23:18:15,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 23:18:15,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 23:18:15,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 23:18:15,085 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 23:18:15,092 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 23:18:15,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 23:18:15,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 23:18:15,094 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-10 23:18:15,131 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 23:18:15,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 23:18:15,132 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 23:18:15,132 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 23:18:15,133 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 23:18:15,133 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 23:18:15,134 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 23:18:15,134 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 23:18:15,134 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 23:18:15,134 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 23:18:15,134 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 23:18:15,135 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 23:18:15,135 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 23:18:15,135 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 23:18:15,135 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 23:18:15,135 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 23:18:15,136 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 23:18:15,136 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 23:18:15,136 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 23:18:15,136 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 23:18:15,136 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 23:18:15,137 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:18:15,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 23:18:15,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 23:18:15,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 23:18:15,139 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 23:18:15,139 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 23:18:15,387 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 23:18:15,406 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 23:18:15,409 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 23:18:15,409 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 23:18:15,410 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 23:18:15,411 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_abp_1-1.c [2022-01-10 23:18:15,473 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34f4a3d3/df8d7bac889f4293be34c69c0e67b4ac/FLAG7c6d46f32 [2022-01-10 23:18:15,885 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 23:18:15,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-1.c [2022-01-10 23:18:15,906 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34f4a3d3/df8d7bac889f4293be34c69c0e67b4ac/FLAG7c6d46f32 [2022-01-10 23:18:16,267 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c34f4a3d3/df8d7bac889f4293be34c69c0e67b4ac [2022-01-10 23:18:16,269 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 23:18:16,270 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 23:18:16,271 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 23:18:16,271 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 23:18:16,274 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 23:18:16,275 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,275 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4438108a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16, skipping insertion in model container [2022-01-10 23:18:16,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 23:18:16,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 23:18:16,559 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-1.c[24818,24831] [2022-01-10 23:18:16,564 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:18:16,573 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 23:18:16,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_abp_1-1.c[24818,24831] [2022-01-10 23:18:16,623 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 23:18:16,633 INFO L208 MainTranslator]: Completed translation [2022-01-10 23:18:16,634 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16 WrapperNode [2022-01-10 23:18:16,634 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 23:18:16,635 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 23:18:16,635 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 23:18:16,635 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 23:18:16,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,651 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,703 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 377 [2022-01-10 23:18:16,703 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 23:18:16,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 23:18:16,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 23:18:16,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 23:18:16,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,715 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,716 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,741 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,747 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,749 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 23:18:16,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 23:18:16,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 23:18:16,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 23:18:16,760 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (1/1) ... [2022-01-10 23:18:16,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 23:18:16,779 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:18:16,793 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 23:18:16,795 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 23:18:16,820 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 23:18:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 23:18:16,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 23:18:16,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 23:18:16,887 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 23:18:16,889 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 23:18:17,402 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 23:18:17,409 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 23:18:17,409 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-01-10 23:18:17,411 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:18:17 BoogieIcfgContainer [2022-01-10 23:18:17,411 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 23:18:17,412 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 23:18:17,412 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 23:18:17,413 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 23:18:17,415 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:18:17" (1/1) ... [2022-01-10 23:18:17,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:18:17 BasicIcfg [2022-01-10 23:18:17,715 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 23:18:17,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 23:18:17,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 23:18:17,719 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 23:18:17,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 11:18:16" (1/4) ... [2022-01-10 23:18:17,720 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487608d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:18:17, skipping insertion in model container [2022-01-10 23:18:17,720 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 11:18:16" (2/4) ... [2022-01-10 23:18:17,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487608d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 11:18:17, skipping insertion in model container [2022-01-10 23:18:17,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 11:18:17" (3/4) ... [2022-01-10 23:18:17,721 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@487608d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 11:18:17, skipping insertion in model container [2022-01-10 23:18:17,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 11:18:17" (4/4) ... [2022-01-10 23:18:17,724 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_abp_1-1.cTransformedIcfg [2022-01-10 23:18:17,729 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 23:18:17,729 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 23:18:17,779 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 23:18:17,784 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 23:18:17,784 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 23:18:17,797 INFO L276 IsEmpty]: Start isEmpty. Operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 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 23:18:17,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-10 23:18:17,801 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:17,801 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:17,802 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:17,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:17,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1327763274, now seen corresponding path program 1 times [2022-01-10 23:18:17,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:17,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158892500] [2022-01-10 23:18:17,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:17,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:17,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:18,018 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 23:18:18,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158892500] [2022-01-10 23:18:18,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158892500] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:18,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:18,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 23:18:18,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618535257] [2022-01-10 23:18:18,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:18,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 23:18:18,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:18,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 23:18:18,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:18:18,059 INFO L87 Difference]: Start difference. First operand has 110 states, 108 states have (on average 1.9537037037037037) internal successors, (211), 109 states have internal predecessors, (211), 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 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 23:18:18,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:18,097 INFO L93 Difference]: Finished difference Result 218 states and 420 transitions. [2022-01-10 23:18:18,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 23:18:18,099 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 10 [2022-01-10 23:18:18,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:18,106 INFO L225 Difference]: With dead ends: 218 [2022-01-10 23:18:18,106 INFO L226 Difference]: Without dead ends: 106 [2022-01-10 23:18:18,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 23:18:18,111 INFO L933 BasicCegarLoop]: 206 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 206 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:18,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:18:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2022-01-10 23:18:18,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2022-01-10 23:18:18,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.6857142857142857) internal successors, (177), 105 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:18:18,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 177 transitions. [2022-01-10 23:18:18,145 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 177 transitions. Word has length 10 [2022-01-10 23:18:18,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:18,145 INFO L470 AbstractCegarLoop]: Abstraction has 106 states and 177 transitions. [2022-01-10 23:18:18,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.0) internal successors, (10), 2 states have internal predecessors, (10), 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 23:18:18,146 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 177 transitions. [2022-01-10 23:18:18,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-10 23:18:18,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:18,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:18,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 23:18:18,147 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:18,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:18,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1819549786, now seen corresponding path program 1 times [2022-01-10 23:18:18,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:18,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547162929] [2022-01-10 23:18:18,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:18,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:18,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:18,202 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 23:18:18,203 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:18,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547162929] [2022-01-10 23:18:18,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547162929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:18,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:18,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:18,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085119312] [2022-01-10 23:18:18,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:18,206 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:18,206 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:18,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:18,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:18,207 INFO L87 Difference]: Start difference. First operand 106 states and 177 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 23:18:18,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:18,277 INFO L93 Difference]: Finished difference Result 214 states and 358 transitions. [2022-01-10 23:18:18,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:18,278 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 11 [2022-01-10 23:18:18,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:18,279 INFO L225 Difference]: With dead ends: 214 [2022-01-10 23:18:18,279 INFO L226 Difference]: Without dead ends: 110 [2022-01-10 23:18:18,280 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 23:18:18,281 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 5 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:18,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 332 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:18:18,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2022-01-10 23:18:18,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2022-01-10 23:18:18,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 109 states have (on average 1.6697247706422018) internal successors, (182), 109 states have internal predecessors, (182), 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 23:18:18,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 182 transitions. [2022-01-10 23:18:18,291 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 182 transitions. Word has length 11 [2022-01-10 23:18:18,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:18,292 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 182 transitions. [2022-01-10 23:18:18,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 23:18:18,292 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 182 transitions. [2022-01-10 23:18:18,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 23:18:18,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:18,293 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:18,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 23:18:18,299 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:18,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:18,300 INFO L85 PathProgramCache]: Analyzing trace with hash 576605350, now seen corresponding path program 1 times [2022-01-10 23:18:18,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:18,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872710155] [2022-01-10 23:18:18,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:18,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:18,456 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-10 23:18:18,456 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:18,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872710155] [2022-01-10 23:18:18,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872710155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:18,457 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:18,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:18,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854124406] [2022-01-10 23:18:18,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:18,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:18,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:18,458 INFO L87 Difference]: Start difference. First operand 110 states and 182 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23:18:20,527 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:22,614 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:24,707 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.09s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:26,790 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:28,906 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:31,019 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:33,101 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:35,175 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:37,276 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:39,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:39,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:39,515 INFO L93 Difference]: Finished difference Result 324 states and 540 transitions. [2022-01-10 23:18:39,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:39,516 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2022-01-10 23:18:39,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:39,518 INFO L225 Difference]: With dead ends: 324 [2022-01-10 23:18:39,518 INFO L226 Difference]: Without dead ends: 204 [2022-01-10 23:18:39,519 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 23:18:39,520 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 145 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 17 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:39,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 294 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 39 Invalid, 10 Unknown, 0 Unchecked, 21.0s Time] [2022-01-10 23:18:39,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-01-10 23:18:39,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 185. [2022-01-10 23:18:39,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 1.701086956521739) internal successors, (313), 184 states have internal predecessors, (313), 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 23:18:39,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 313 transitions. [2022-01-10 23:18:39,534 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 313 transitions. Word has length 17 [2022-01-10 23:18:39,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:39,534 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 313 transitions. [2022-01-10 23:18:39,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23:18:39,535 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 313 transitions. [2022-01-10 23:18:39,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-10 23:18:39,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:39,535 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:39,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 23:18:39,536 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:39,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:39,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1170706024, now seen corresponding path program 1 times [2022-01-10 23:18:39,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:39,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465110846] [2022-01-10 23:18:39,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:39,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:39,637 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:39,638 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:39,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465110846] [2022-01-10 23:18:39,638 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465110846] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:39,638 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:39,638 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:39,639 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123951385] [2022-01-10 23:18:39,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:39,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:39,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:39,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:39,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:39,640 INFO L87 Difference]: Start difference. First operand 185 states and 313 transitions. Second operand has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23:18:41,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:43,846 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:45,947 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:48,034 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:50,122 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:50,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:50,203 INFO L93 Difference]: Finished difference Result 281 states and 465 transitions. [2022-01-10 23:18:50,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:50,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 17 [2022-01-10 23:18:50,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:50,206 INFO L225 Difference]: With dead ends: 281 [2022-01-10 23:18:50,206 INFO L226 Difference]: Without dead ends: 270 [2022-01-10 23:18:50,207 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 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 23:18:50,208 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 127 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:50,208 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 312 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 44 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time] [2022-01-10 23:18:50,209 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2022-01-10 23:18:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 255. [2022-01-10 23:18:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 1.6811023622047243) internal successors, (427), 254 states have internal predecessors, (427), 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 23:18:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 427 transitions. [2022-01-10 23:18:50,225 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 427 transitions. Word has length 17 [2022-01-10 23:18:50,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:50,225 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 427 transitions. [2022-01-10 23:18:50,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.666666666666667) internal successors, (17), 3 states have internal predecessors, (17), 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 23:18:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 427 transitions. [2022-01-10 23:18:50,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-10 23:18:50,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:50,226 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:50,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 23:18:50,226 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:50,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1962750742, now seen corresponding path program 1 times [2022-01-10 23:18:50,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:50,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739547052] [2022-01-10 23:18:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:50,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:50,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:50,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:50,258 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:50,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739547052] [2022-01-10 23:18:50,258 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739547052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:50,258 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:50,258 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:50,258 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508335469] [2022-01-10 23:18:50,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:50,259 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:50,259 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:50,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:50,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:50,260 INFO L87 Difference]: Start difference. First operand 255 states and 427 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 23:18:50,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:50,291 INFO L93 Difference]: Finished difference Result 389 states and 645 transitions. [2022-01-10 23:18:50,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:50,291 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 18 [2022-01-10 23:18:50,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:50,292 INFO L225 Difference]: With dead ends: 389 [2022-01-10 23:18:50,292 INFO L226 Difference]: Without dead ends: 137 [2022-01-10 23:18:50,293 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 23:18:50,294 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 33 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:50,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 307 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:18:50,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2022-01-10 23:18:50,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 135. [2022-01-10 23:18:50,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 134 states have (on average 1.6119402985074627) internal successors, (216), 134 states have internal predecessors, (216), 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 23:18:50,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 216 transitions. [2022-01-10 23:18:50,302 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 216 transitions. Word has length 18 [2022-01-10 23:18:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:50,302 INFO L470 AbstractCegarLoop]: Abstraction has 135 states and 216 transitions. [2022-01-10 23:18:50,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 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 23:18:50,302 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 216 transitions. [2022-01-10 23:18:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 23:18:50,303 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:50,303 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:50,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 23:18:50,304 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:50,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:50,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1842789708, now seen corresponding path program 1 times [2022-01-10 23:18:50,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:50,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735747175] [2022-01-10 23:18:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:50,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:50,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:50,349 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 23:18:50,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:50,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735747175] [2022-01-10 23:18:50,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735747175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:50,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:50,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:50,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122262776] [2022-01-10 23:18:50,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:50,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:50,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:50,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:50,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:50,351 INFO L87 Difference]: Start difference. First operand 135 states and 216 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23:18:50,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:50,376 INFO L93 Difference]: Finished difference Result 243 states and 389 transitions. [2022-01-10 23:18:50,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:50,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 23:18:50,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:50,378 INFO L225 Difference]: With dead ends: 243 [2022-01-10 23:18:50,378 INFO L226 Difference]: Without dead ends: 115 [2022-01-10 23:18:50,378 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 23:18:50,379 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 101 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:50,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 180 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:18:50,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2022-01-10 23:18:50,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2022-01-10 23:18:50,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 112 states have (on average 1.5803571428571428) internal successors, (177), 112 states have internal predecessors, (177), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 23:18:50,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 177 transitions. [2022-01-10 23:18:50,385 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 177 transitions. Word has length 24 [2022-01-10 23:18:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:50,385 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 177 transitions. [2022-01-10 23:18:50,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 23:18:50,386 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 177 transitions. [2022-01-10 23:18:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-10 23:18:50,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:50,386 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 23:18:50,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 23:18:50,387 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:50,387 INFO L85 PathProgramCache]: Analyzing trace with hash -415106918, now seen corresponding path program 1 times [2022-01-10 23:18:50,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:50,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734410404] [2022-01-10 23:18:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:50,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:50,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:50,558 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:50,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734410404] [2022-01-10 23:18:50,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734410404] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:18:50,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730122315] [2022-01-10 23:18:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:50,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:18:50,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:18:50,560 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 23:18:50,561 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 23:18:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:50,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 23:18:50,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 23:18:51,073 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:51,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 23:18:51,154 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:51,154 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730122315] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 23:18:51,154 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 23:18:51,154 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 23:18:51,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394731157] [2022-01-10 23:18:51,155 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 23:18:51,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 23:18:51,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:51,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 23:18:51,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:18:51,156 INFO L87 Difference]: Start difference. First operand 113 states and 177 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 23:18:53,215 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:55,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 23:18:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:55,384 INFO L93 Difference]: Finished difference Result 182 states and 286 transitions. [2022-01-10 23:18:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 23:18:55,384 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 26 [2022-01-10 23:18:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:55,385 INFO L225 Difference]: With dead ends: 182 [2022-01-10 23:18:55,386 INFO L226 Difference]: Without dead ends: 179 [2022-01-10 23:18:55,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 23:18:55,387 INFO L933 BasicCegarLoop]: 133 mSDtfsCounter, 177 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 7 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 22 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:55,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 607 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 25 Invalid, 2 Unknown, 22 Unchecked, 4.2s Time] [2022-01-10 23:18:55,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-01-10 23:18:55,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 158. [2022-01-10 23:18:55,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 1.6624203821656052) internal successors, (261), 157 states have internal predecessors, (261), 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 23:18:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 261 transitions. [2022-01-10 23:18:55,394 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 261 transitions. Word has length 26 [2022-01-10 23:18:55,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:55,395 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 261 transitions. [2022-01-10 23:18:55,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 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 23:18:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 261 transitions. [2022-01-10 23:18:55,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 23:18:55,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:55,396 INFO L514 BasicCegarLoop]: trace histogram [3, 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 23:18:55,424 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-10 23:18:55,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:18:55,612 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:55,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:55,612 INFO L85 PathProgramCache]: Analyzing trace with hash 47191532, now seen corresponding path program 1 times [2022-01-10 23:18:55,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:55,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143337979] [2022-01-10 23:18:55,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:55,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:55,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:55,672 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 23:18:55,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:55,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143337979] [2022-01-10 23:18:55,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143337979] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 23:18:55,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 23:18:55,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 23:18:55,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897205827] [2022-01-10 23:18:55,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 23:18:55,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 23:18:55,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 23:18:55,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 23:18:55,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 23:18:55,673 INFO L87 Difference]: Start difference. First operand 158 states and 261 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 23:18:55,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 23:18:55,707 INFO L93 Difference]: Finished difference Result 271 states and 444 transitions. [2022-01-10 23:18:55,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 23:18:55,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 27 [2022-01-10 23:18:55,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 23:18:55,709 INFO L225 Difference]: With dead ends: 271 [2022-01-10 23:18:55,709 INFO L226 Difference]: Without dead ends: 139 [2022-01-10 23:18:55,709 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 23:18:55,710 INFO L933 BasicCegarLoop]: 145 mSDtfsCounter, 33 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 23:18:55,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 244 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 23:18:55,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2022-01-10 23:18:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 137. [2022-01-10 23:18:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 136 states have (on average 1.5735294117647058) internal successors, (214), 136 states have internal predecessors, (214), 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 23:18:55,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 214 transitions. [2022-01-10 23:18:55,723 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 214 transitions. Word has length 27 [2022-01-10 23:18:55,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 23:18:55,724 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 214 transitions. [2022-01-10 23:18:55,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 23:18:55,725 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 214 transitions. [2022-01-10 23:18:55,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 23:18:55,726 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 23:18:55,726 INFO L514 BasicCegarLoop]: trace histogram [3, 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 23:18:55,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 23:18:55,726 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 23:18:55,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 23:18:55,726 INFO L85 PathProgramCache]: Analyzing trace with hash 17575248, now seen corresponding path program 1 times [2022-01-10 23:18:55,726 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 23:18:55,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935155321] [2022-01-10 23:18:55,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:55,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 23:18:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 23:18:55,823 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 23:18:55,823 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 23:18:55,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935155321] [2022-01-10 23:18:55,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935155321] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 23:18:55,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606124537] [2022-01-10 23:18:55,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 23:18:55,824 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 23:18:55,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 23:18:55,825 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 23:18:55,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process