/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/systemc/token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:17:20,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:17:20,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:17:20,157 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:17:20,163 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:17:20,164 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:17:20,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:17:20,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:17:20,166 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:17:20,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:17:20,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:17:20,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:17:20,179 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:17:20,183 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:17:20,185 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:17:20,186 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:17:20,188 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:17:20,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:17:20,194 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:17:20,195 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:17:20,196 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 [2022-01-11 00:17:20,220 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:17:20,220 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:17:20,221 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:17:20,221 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:17:20,221 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:17:20,222 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:17:20,222 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:17:20,222 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:17:20,222 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:17:20,222 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:17:20,223 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:17:20,223 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:17:20,224 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:17:20,224 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:17:20,225 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:17:20,226 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:17:20,226 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:17:20,432 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:17:20,449 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:17:20,450 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:17:20,452 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:17:20,452 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:17:20,453 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2022-01-11 00:17:20,497 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d63dd96/31ef555b6902442cb951b70f762248fb/FLAG7ece3fc76 [2022-01-11 00:17:20,814 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:17:20,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c [2022-01-11 00:17:20,826 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d63dd96/31ef555b6902442cb951b70f762248fb/FLAG7ece3fc76 [2022-01-11 00:17:21,232 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25d63dd96/31ef555b6902442cb951b70f762248fb [2022-01-11 00:17:21,234 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:17:21,236 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:17:21,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:17:21,244 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:17:21,246 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:17:21,247 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,248 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2dbdfaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21, skipping insertion in model container [2022-01-11 00:17:21,248 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:17:21,287 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:17:21,394 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2022-01-11 00:17:21,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:17:21,489 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:17:21,500 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.06.cil-2.c[671,684] [2022-01-11 00:17:21,538 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:17:21,556 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:17:21,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21 WrapperNode [2022-01-11 00:17:21,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:17:21,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:17:21,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:17:21,557 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:17:21,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,588 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,623 INFO L137 Inliner]: procedures = 40, calls = 49, calls flagged for inlining = 44, calls inlined = 113, statements flattened = 1650 [2022-01-11 00:17:21,623 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:17:21,624 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:17:21,624 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:17:21,624 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:17:21,629 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,630 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,648 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,678 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,682 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:17:21,683 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:17:21,683 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:17:21,683 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:17:21,694 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (1/1) ... [2022-01-11 00:17:21,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:17:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:17:21,724 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) [2022-01-11 00:17:21,741 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 [2022-01-11 00:17:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:17:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:17:21,762 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:17:21,762 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:17:21,848 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:17:21,849 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:17:22,773 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:17:22,796 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:17:22,796 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2022-01-11 00:17:22,798 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:22 BoogieIcfgContainer [2022-01-11 00:17:22,798 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:17:22,800 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:17:22,800 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:17:22,801 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:17:22,803 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:22" (1/1) ... [2022-01-11 00:17:22,986 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:17:22 BasicIcfg [2022-01-11 00:17:22,987 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:17:22,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:17:22,992 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:17:22,994 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:17:22,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:17:21" (1/4) ... [2022-01-11 00:17:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b735469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:17:22, skipping insertion in model container [2022-01-11 00:17:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:17:21" (2/4) ... [2022-01-11 00:17:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b735469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:17:22, skipping insertion in model container [2022-01-11 00:17:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:17:22" (3/4) ... [2022-01-11 00:17:22,995 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b735469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:17:22, skipping insertion in model container [2022-01-11 00:17:22,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:17:22" (4/4) ... [2022-01-11 00:17:22,996 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.06.cil-2.cTransformedIcfg [2022-01-11 00:17:23,000 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:17:23,000 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:17:23,031 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:17:23,035 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 [2022-01-11 00:17:23,036 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:17:23,061 INFO L276 IsEmpty]: Start isEmpty. Operand has 688 states, 686 states have (on average 1.5247813411078717) internal successors, (1046), 687 states have internal predecessors, (1046), 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) [2022-01-11 00:17:23,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:23,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:23,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:23,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:23,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:23,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1654984709, now seen corresponding path program 1 times [2022-01-11 00:17:23,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:23,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947895235] [2022-01-11 00:17:23,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:23,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:23,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:23,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:23,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:23,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947895235] [2022-01-11 00:17:23,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947895235] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:23,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:23,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:23,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503427083] [2022-01-11 00:17:23,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:23,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:23,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:23,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:23,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,349 INFO L87 Difference]: Start difference. First operand has 688 states, 686 states have (on average 1.5247813411078717) internal successors, (1046), 687 states have internal predecessors, (1046), 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 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:23,480 INFO L93 Difference]: Finished difference Result 1361 states and 2068 transitions. [2022-01-11 00:17:23,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:23,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:23,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:23,499 INFO L225 Difference]: With dead ends: 1361 [2022-01-11 00:17:23,499 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:23,507 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 [2022-01-11 00:17:23,510 INFO L933 BasicCegarLoop]: 1016 mSDtfsCounter, 1008 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1016 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:23,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1016 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:23,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:23,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4912023460410557) internal successors, (1017), 682 states have internal predecessors, (1017), 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) [2022-01-11 00:17:23,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1017 transitions. [2022-01-11 00:17:23,576 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1017 transitions. Word has length 98 [2022-01-11 00:17:23,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:23,576 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1017 transitions. [2022-01-11 00:17:23,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,576 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1017 transitions. [2022-01-11 00:17:23,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:23,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:23,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:23,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:17:23,579 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:23,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:23,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1176003803, now seen corresponding path program 1 times [2022-01-11 00:17:23,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:23,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124109985] [2022-01-11 00:17:23,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:23,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:23,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:23,680 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:23,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:23,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124109985] [2022-01-11 00:17:23,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124109985] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:23,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:23,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:23,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269487322] [2022-01-11 00:17:23,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:23,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:23,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:23,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:23,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,683 INFO L87 Difference]: Start difference. First operand 683 states and 1017 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:23,723 INFO L93 Difference]: Finished difference Result 1351 states and 2010 transitions. [2022-01-11 00:17:23,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:23,723 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:23,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:23,727 INFO L225 Difference]: With dead ends: 1351 [2022-01-11 00:17:23,727 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:23,731 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 [2022-01-11 00:17:23,732 INFO L933 BasicCegarLoop]: 1007 mSDtfsCounter, 998 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 998 SdHoareTripleChecker+Valid, 1007 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:23,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [998 Valid, 1007 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:23,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:23,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4838709677419355) internal successors, (1012), 682 states have internal predecessors, (1012), 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) [2022-01-11 00:17:23,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1012 transitions. [2022-01-11 00:17:23,771 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1012 transitions. Word has length 98 [2022-01-11 00:17:23,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:23,772 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1012 transitions. [2022-01-11 00:17:23,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,772 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1012 transitions. [2022-01-11 00:17:23,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:23,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:23,774 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:23,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:17:23,774 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:23,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:23,775 INFO L85 PathProgramCache]: Analyzing trace with hash -949431301, now seen corresponding path program 1 times [2022-01-11 00:17:23,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:23,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851875350] [2022-01-11 00:17:23,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:23,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:23,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:23,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:23,872 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:23,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851875350] [2022-01-11 00:17:23,873 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851875350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:23,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:23,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:23,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250824649] [2022-01-11 00:17:23,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:23,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:23,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:23,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:23,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:23,876 INFO L87 Difference]: Start difference. First operand 683 states and 1012 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:23,911 INFO L93 Difference]: Finished difference Result 1350 states and 1999 transitions. [2022-01-11 00:17:23,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:23,911 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:23,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:23,913 INFO L225 Difference]: With dead ends: 1350 [2022-01-11 00:17:23,914 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:23,917 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 [2022-01-11 00:17:23,919 INFO L933 BasicCegarLoop]: 1002 mSDtfsCounter, 992 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:23,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [992 Valid, 1002 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:23,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:23,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:23,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4765395894428153) internal successors, (1007), 682 states have internal predecessors, (1007), 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) [2022-01-11 00:17:23,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1007 transitions. [2022-01-11 00:17:23,942 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1007 transitions. Word has length 98 [2022-01-11 00:17:23,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:23,943 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1007 transitions. [2022-01-11 00:17:23,943 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:23,944 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1007 transitions. [2022-01-11 00:17:23,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:23,950 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:23,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:23,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:17:23,951 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:23,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:23,952 INFO L85 PathProgramCache]: Analyzing trace with hash 1891500251, now seen corresponding path program 1 times [2022-01-11 00:17:23,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:23,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447779897] [2022-01-11 00:17:23,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:23,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:23,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [447779897] [2022-01-11 00:17:24,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [447779897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647748049] [2022-01-11 00:17:24,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,020 INFO L87 Difference]: Start difference. First operand 683 states and 1007 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,051 INFO L93 Difference]: Finished difference Result 1349 states and 1988 transitions. [2022-01-11 00:17:24,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,052 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,054 INFO L225 Difference]: With dead ends: 1349 [2022-01-11 00:17:24,054 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,055 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 [2022-01-11 00:17:24,061 INFO L933 BasicCegarLoop]: 997 mSDtfsCounter, 986 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [986 Valid, 997 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.469208211143695) internal successors, (1002), 682 states have internal predecessors, (1002), 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) [2022-01-11 00:17:24,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1002 transitions. [2022-01-11 00:17:24,082 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1002 transitions. Word has length 98 [2022-01-11 00:17:24,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,082 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 1002 transitions. [2022-01-11 00:17:24,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,082 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1002 transitions. [2022-01-11 00:17:24,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:17:24,085 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,086 INFO L85 PathProgramCache]: Analyzing trace with hash 597669883, now seen corresponding path program 1 times [2022-01-11 00:17:24,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1956421040] [2022-01-11 00:17:24,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,127 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1956421040] [2022-01-11 00:17:24,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1956421040] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897398496] [2022-01-11 00:17:24,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,129 INFO L87 Difference]: Start difference. First operand 683 states and 1002 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,161 INFO L93 Difference]: Finished difference Result 1348 states and 1977 transitions. [2022-01-11 00:17:24,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,161 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,163 INFO L225 Difference]: With dead ends: 1348 [2022-01-11 00:17:24,163 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,164 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 [2022-01-11 00:17:24,165 INFO L933 BasicCegarLoop]: 992 mSDtfsCounter, 980 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 992 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [980 Valid, 992 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4618768328445748) internal successors, (997), 682 states have internal predecessors, (997), 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) [2022-01-11 00:17:24,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 997 transitions. [2022-01-11 00:17:24,190 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 997 transitions. Word has length 98 [2022-01-11 00:17:24,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,191 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 997 transitions. [2022-01-11 00:17:24,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,194 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 997 transitions. [2022-01-11 00:17:24,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,199 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:17:24,199 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,200 INFO L85 PathProgramCache]: Analyzing trace with hash 1744091, now seen corresponding path program 1 times [2022-01-11 00:17:24,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116186945] [2022-01-11 00:17:24,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116186945] [2022-01-11 00:17:24,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116186945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218409314] [2022-01-11 00:17:24,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,246 INFO L87 Difference]: Start difference. First operand 683 states and 997 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,285 INFO L93 Difference]: Finished difference Result 1347 states and 1966 transitions. [2022-01-11 00:17:24,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,287 INFO L225 Difference]: With dead ends: 1347 [2022-01-11 00:17:24,287 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,289 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 [2022-01-11 00:17:24,290 INFO L933 BasicCegarLoop]: 987 mSDtfsCounter, 974 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 974 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [974 Valid, 987 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4545454545454546) internal successors, (992), 682 states have internal predecessors, (992), 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) [2022-01-11 00:17:24,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 992 transitions. [2022-01-11 00:17:24,314 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 992 transitions. Word has length 98 [2022-01-11 00:17:24,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,314 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 992 transitions. [2022-01-11 00:17:24,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,314 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 992 transitions. [2022-01-11 00:17:24,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,315 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:17:24,315 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,316 INFO L85 PathProgramCache]: Analyzing trace with hash 675257339, now seen corresponding path program 1 times [2022-01-11 00:17:24,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118304176] [2022-01-11 00:17:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118304176] [2022-01-11 00:17:24,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118304176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849532694] [2022-01-11 00:17:24,378 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,380 INFO L87 Difference]: Start difference. First operand 683 states and 992 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,432 INFO L93 Difference]: Finished difference Result 1346 states and 1955 transitions. [2022-01-11 00:17:24,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,432 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,436 INFO L225 Difference]: With dead ends: 1346 [2022-01-11 00:17:24,436 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,437 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 [2022-01-11 00:17:24,437 INFO L933 BasicCegarLoop]: 964 mSDtfsCounter, 887 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 1032 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [887 Valid, 1032 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.434017595307918) internal successors, (978), 682 states have internal predecessors, (978), 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) [2022-01-11 00:17:24,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 978 transitions. [2022-01-11 00:17:24,460 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 978 transitions. Word has length 98 [2022-01-11 00:17:24,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,461 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 978 transitions. [2022-01-11 00:17:24,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,461 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 978 transitions. [2022-01-11 00:17:24,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,461 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,461 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:17:24,462 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,462 INFO L85 PathProgramCache]: Analyzing trace with hash 182103386, now seen corresponding path program 1 times [2022-01-11 00:17:24,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133964172] [2022-01-11 00:17:24,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133964172] [2022-01-11 00:17:24,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133964172] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469640989] [2022-01-11 00:17:24,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,494 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,494 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,495 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,495 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,495 INFO L87 Difference]: Start difference. First operand 683 states and 978 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,545 INFO L93 Difference]: Finished difference Result 1344 states and 1924 transitions. [2022-01-11 00:17:24,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,546 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,548 INFO L225 Difference]: With dead ends: 1344 [2022-01-11 00:17:24,548 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,549 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 [2022-01-11 00:17:24,549 INFO L933 BasicCegarLoop]: 950 mSDtfsCounter, 872 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1017 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.4134897360703813) internal successors, (964), 682 states have internal predecessors, (964), 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) [2022-01-11 00:17:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 964 transitions. [2022-01-11 00:17:24,576 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 964 transitions. Word has length 98 [2022-01-11 00:17:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,577 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 964 transitions. [2022-01-11 00:17:24,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 964 transitions. [2022-01-11 00:17:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,578 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:17:24,578 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,578 INFO L85 PathProgramCache]: Analyzing trace with hash 500890937, now seen corresponding path program 1 times [2022-01-11 00:17:24,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23157113] [2022-01-11 00:17:24,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,612 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,612 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23157113] [2022-01-11 00:17:24,612 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23157113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,612 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,612 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,612 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729286914] [2022-01-11 00:17:24,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,614 INFO L87 Difference]: Start difference. First operand 683 states and 964 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,670 INFO L93 Difference]: Finished difference Result 1343 states and 1895 transitions. [2022-01-11 00:17:24,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,670 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,672 INFO L225 Difference]: With dead ends: 1343 [2022-01-11 00:17:24,672 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,675 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 [2022-01-11 00:17:24,676 INFO L933 BasicCegarLoop]: 936 mSDtfsCounter, 858 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1002 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3929618768328447) internal successors, (950), 682 states have internal predecessors, (950), 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) [2022-01-11 00:17:24,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 950 transitions. [2022-01-11 00:17:24,705 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 950 transitions. Word has length 98 [2022-01-11 00:17:24,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,705 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 950 transitions. [2022-01-11 00:17:24,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,706 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 950 transitions. [2022-01-11 00:17:24,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:17:24,709 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,709 INFO L85 PathProgramCache]: Analyzing trace with hash 378040984, now seen corresponding path program 1 times [2022-01-11 00:17:24,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397913742] [2022-01-11 00:17:24,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397913742] [2022-01-11 00:17:24,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397913742] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497554517] [2022-01-11 00:17:24,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,756 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,756 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,757 INFO L87 Difference]: Start difference. First operand 683 states and 950 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,812 INFO L93 Difference]: Finished difference Result 1342 states and 1866 transitions. [2022-01-11 00:17:24,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,826 INFO L225 Difference]: With dead ends: 1342 [2022-01-11 00:17:24,826 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,827 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 [2022-01-11 00:17:24,827 INFO L933 BasicCegarLoop]: 922 mSDtfsCounter, 844 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 987 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [844 Valid, 987 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3724340175953078) internal successors, (936), 682 states have internal predecessors, (936), 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) [2022-01-11 00:17:24,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 936 transitions. [2022-01-11 00:17:24,852 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 936 transitions. Word has length 98 [2022-01-11 00:17:24,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,852 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 936 transitions. [2022-01-11 00:17:24,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,853 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 936 transitions. [2022-01-11 00:17:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,853 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,854 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:17:24,854 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,854 INFO L85 PathProgramCache]: Analyzing trace with hash -147734281, now seen corresponding path program 1 times [2022-01-11 00:17:24,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039848829] [2022-01-11 00:17:24,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,882 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039848829] [2022-01-11 00:17:24,882 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1039848829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,882 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136164812] [2022-01-11 00:17:24,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,883 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,883 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,884 INFO L87 Difference]: Start difference. First operand 683 states and 936 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:24,935 INFO L93 Difference]: Finished difference Result 1341 states and 1837 transitions. [2022-01-11 00:17:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:24,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:24,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:24,937 INFO L225 Difference]: With dead ends: 1341 [2022-01-11 00:17:24,937 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:24,938 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 [2022-01-11 00:17:24,939 INFO L933 BasicCegarLoop]: 908 mSDtfsCounter, 830 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:24,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [830 Valid, 972 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:24,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:24,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:24,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3519061583577712) internal successors, (922), 682 states have internal predecessors, (922), 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) [2022-01-11 00:17:24,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 922 transitions. [2022-01-11 00:17:24,964 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 922 transitions. Word has length 98 [2022-01-11 00:17:24,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:24,964 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 922 transitions. [2022-01-11 00:17:24,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:24,964 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 922 transitions. [2022-01-11 00:17:24,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:24,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:24,965 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:24,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:17:24,965 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:24,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:24,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1658280746, now seen corresponding path program 1 times [2022-01-11 00:17:24,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:24,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035010843] [2022-01-11 00:17:24,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:24,966 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:24,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:24,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:24,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:24,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035010843] [2022-01-11 00:17:24,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035010843] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:24,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:24,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:24,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966222059] [2022-01-11 00:17:24,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:24,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:24,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:24,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:24,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:24,991 INFO L87 Difference]: Start difference. First operand 683 states and 922 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:25,044 INFO L93 Difference]: Finished difference Result 1340 states and 1808 transitions. [2022-01-11 00:17:25,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,047 INFO L225 Difference]: With dead ends: 1340 [2022-01-11 00:17:25,047 INFO L226 Difference]: Without dead ends: 683 [2022-01-11 00:17:25,048 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 [2022-01-11 00:17:25,049 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 816 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 957 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:25,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-11 00:17:25,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-01-11 00:17:25,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 1.3313782991202345) internal successors, (908), 682 states have internal predecessors, (908), 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) [2022-01-11 00:17:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 908 transitions. [2022-01-11 00:17:25,075 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 908 transitions. Word has length 98 [2022-01-11 00:17:25,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:25,076 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 908 transitions. [2022-01-11 00:17:25,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:25,076 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 908 transitions. [2022-01-11 00:17:25,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:25,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:25,077 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:25,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:17:25,077 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash 652128693, now seen corresponding path program 1 times [2022-01-11 00:17:25,078 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:25,078 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994830216] [2022-01-11 00:17:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:25,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:25,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:25,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:25,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:25,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994830216] [2022-01-11 00:17:25,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994830216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:25,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:25,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:25,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403426063] [2022-01-11 00:17:25,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:25,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:25,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:25,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:25,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:25,126 INFO L87 Difference]: Start difference. First operand 683 states and 908 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:25,225 INFO L93 Difference]: Finished difference Result 1861 states and 2472 transitions. [2022-01-11 00:17:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,229 INFO L225 Difference]: With dead ends: 1861 [2022-01-11 00:17:25,230 INFO L226 Difference]: Without dead ends: 1213 [2022-01-11 00:17:25,231 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 [2022-01-11 00:17:25,231 INFO L933 BasicCegarLoop]: 895 mSDtfsCounter, 776 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 776 SdHoareTripleChecker+Valid, 1663 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [776 Valid, 1663 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:25,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1213 states. [2022-01-11 00:17:25,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1213 to 1209. [2022-01-11 00:17:25,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 1208 states have (on average 1.3228476821192052) internal successors, (1598), 1208 states have internal predecessors, (1598), 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) [2022-01-11 00:17:25,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 1598 transitions. [2022-01-11 00:17:25,288 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 1598 transitions. Word has length 98 [2022-01-11 00:17:25,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:25,289 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 1598 transitions. [2022-01-11 00:17:25,289 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:25,289 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 1598 transitions. [2022-01-11 00:17:25,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:25,290 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:25,290 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:25,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:17:25,291 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:25,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:25,291 INFO L85 PathProgramCache]: Analyzing trace with hash 1902129524, now seen corresponding path program 1 times [2022-01-11 00:17:25,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:25,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31888280] [2022-01-11 00:17:25,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:25,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:25,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:25,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:25,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31888280] [2022-01-11 00:17:25,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31888280] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:25,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:25,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:17:25,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790145275] [2022-01-11 00:17:25,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:25,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:17:25,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:25,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:17:25,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:17:25,341 INFO L87 Difference]: Start difference. First operand 1209 states and 1598 transitions. Second operand has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2022-01-11 00:17:25,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:25,566 INFO L93 Difference]: Finished difference Result 3419 states and 4519 transitions. [2022-01-11 00:17:25,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:17:25,567 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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 [2022-01-11 00:17:25,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,573 INFO L225 Difference]: With dead ends: 3419 [2022-01-11 00:17:25,573 INFO L226 Difference]: Without dead ends: 2249 [2022-01-11 00:17:25,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:17:25,575 INFO L933 BasicCegarLoop]: 973 mSDtfsCounter, 2840 mSDsluCounter, 3659 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2840 SdHoareTripleChecker+Valid, 4632 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2840 Valid, 4632 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:17:25,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2249 states. [2022-01-11 00:17:25,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2249 to 1236. [2022-01-11 00:17:25,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1236 states, 1235 states have (on average 1.308502024291498) internal successors, (1616), 1235 states have internal predecessors, (1616), 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) [2022-01-11 00:17:25,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1616 transitions. [2022-01-11 00:17:25,664 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1616 transitions. Word has length 98 [2022-01-11 00:17:25,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:25,664 INFO L470 AbstractCegarLoop]: Abstraction has 1236 states and 1616 transitions. [2022-01-11 00:17:25,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.6) internal successors, (98), 5 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) [2022-01-11 00:17:25,664 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1616 transitions. [2022-01-11 00:17:25,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:25,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:25,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:25,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:17:25,665 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:25,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:25,666 INFO L85 PathProgramCache]: Analyzing trace with hash 735433205, now seen corresponding path program 1 times [2022-01-11 00:17:25,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:25,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161629744] [2022-01-11 00:17:25,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:25,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:25,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:25,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:25,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161629744] [2022-01-11 00:17:25,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161629744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:25,701 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:25,701 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:25,701 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256873662] [2022-01-11 00:17:25,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:25,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:25,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:25,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:25,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:25,702 INFO L87 Difference]: Start difference. First operand 1236 states and 1616 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:25,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:25,836 INFO L93 Difference]: Finished difference Result 3501 states and 4581 transitions. [2022-01-11 00:17:25,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:25,836 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:25,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:25,842 INFO L225 Difference]: With dead ends: 3501 [2022-01-11 00:17:25,842 INFO L226 Difference]: Without dead ends: 2278 [2022-01-11 00:17:25,845 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 [2022-01-11 00:17:25,845 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 763 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 763 SdHoareTripleChecker+Valid, 1682 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:25,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [763 Valid, 1682 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:25,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2278 states. [2022-01-11 00:17:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2278 to 2276. [2022-01-11 00:17:26,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2276 states, 2275 states have (on average 1.3094505494505495) internal successors, (2979), 2275 states have internal predecessors, (2979), 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) [2022-01-11 00:17:26,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2979 transitions. [2022-01-11 00:17:26,005 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2979 transitions. Word has length 98 [2022-01-11 00:17:26,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:26,006 INFO L470 AbstractCegarLoop]: Abstraction has 2276 states and 2979 transitions. [2022-01-11 00:17:26,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:26,006 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2979 transitions. [2022-01-11 00:17:26,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:26,006 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:26,007 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:26,007 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:17:26,007 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:26,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:26,007 INFO L85 PathProgramCache]: Analyzing trace with hash 1428534902, now seen corresponding path program 1 times [2022-01-11 00:17:26,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:26,007 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789257855] [2022-01-11 00:17:26,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:26,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:26,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:26,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:26,050 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:26,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789257855] [2022-01-11 00:17:26,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789257855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:26,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:26,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:26,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309907545] [2022-01-11 00:17:26,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:26,052 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:26,052 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:26,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:26,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:26,053 INFO L87 Difference]: Start difference. First operand 2276 states and 2979 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:26,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:26,195 INFO L93 Difference]: Finished difference Result 4486 states and 5869 transitions. [2022-01-11 00:17:26,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:26,196 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:26,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:26,202 INFO L225 Difference]: With dead ends: 4486 [2022-01-11 00:17:26,202 INFO L226 Difference]: Without dead ends: 2231 [2022-01-11 00:17:26,205 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 [2022-01-11 00:17:26,205 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 738 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 930 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:26,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 930 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:26,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2022-01-11 00:17:26,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 2231. [2022-01-11 00:17:26,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2231 states, 2230 states have (on average 1.295964125560538) internal successors, (2890), 2230 states have internal predecessors, (2890), 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) [2022-01-11 00:17:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2231 states to 2231 states and 2890 transitions. [2022-01-11 00:17:26,339 INFO L78 Accepts]: Start accepts. Automaton has 2231 states and 2890 transitions. Word has length 98 [2022-01-11 00:17:26,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:26,339 INFO L470 AbstractCegarLoop]: Abstraction has 2231 states and 2890 transitions. [2022-01-11 00:17:26,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:26,339 INFO L276 IsEmpty]: Start isEmpty. Operand 2231 states and 2890 transitions. [2022-01-11 00:17:26,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-01-11 00:17:26,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:26,340 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:17:26,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:17:26,340 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:26,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:26,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1639885815, now seen corresponding path program 1 times [2022-01-11 00:17:26,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:26,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663636779] [2022-01-11 00:17:26,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:26,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:26,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:26,391 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:26,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663636779] [2022-01-11 00:17:26,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663636779] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:26,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:26,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:17:26,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558683161] [2022-01-11 00:17:26,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:26,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:26,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:26,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:26,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:26,393 INFO L87 Difference]: Start difference. First operand 2231 states and 2890 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:26,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:26,635 INFO L93 Difference]: Finished difference Result 6528 states and 8467 transitions. [2022-01-11 00:17:26,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:26,636 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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 [2022-01-11 00:17:26,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:26,648 INFO L225 Difference]: With dead ends: 6528 [2022-01-11 00:17:26,649 INFO L226 Difference]: Without dead ends: 4325 [2022-01-11 00:17:26,651 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 [2022-01-11 00:17:26,652 INFO L933 BasicCegarLoop]: 868 mSDtfsCounter, 758 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:26,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1617 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4325 states. [2022-01-11 00:17:26,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4325 to 4129. [2022-01-11 00:17:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4129 states, 4128 states have (on average 1.2911821705426356) internal successors, (5330), 4128 states have internal predecessors, (5330), 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) [2022-01-11 00:17:26,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4129 states to 4129 states and 5330 transitions. [2022-01-11 00:17:26,856 INFO L78 Accepts]: Start accepts. Automaton has 4129 states and 5330 transitions. Word has length 98 [2022-01-11 00:17:26,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:26,856 INFO L470 AbstractCegarLoop]: Abstraction has 4129 states and 5330 transitions. [2022-01-11 00:17:26,856 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 2 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) [2022-01-11 00:17:26,857 INFO L276 IsEmpty]: Start isEmpty. Operand 4129 states and 5330 transitions. [2022-01-11 00:17:26,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 00:17:26,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:26,859 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:26,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:17:26,859 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:26,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:26,859 INFO L85 PathProgramCache]: Analyzing trace with hash -2023748834, now seen corresponding path program 1 times [2022-01-11 00:17:26,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:26,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83060734] [2022-01-11 00:17:26,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:26,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:26,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:26,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:26,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83060734] [2022-01-11 00:17:26,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83060734] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:26,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:26,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:26,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541013160] [2022-01-11 00:17:26,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:26,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:26,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:26,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:26,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:26,942 INFO L87 Difference]: Start difference. First operand 4129 states and 5330 transitions. Second operand has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 00:17:27,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:27,384 INFO L93 Difference]: Finished difference Result 11938 states and 15331 transitions. [2022-01-11 00:17:27,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:27,384 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 00:17:27,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:27,405 INFO L225 Difference]: With dead ends: 11938 [2022-01-11 00:17:27,406 INFO L226 Difference]: Without dead ends: 7898 [2022-01-11 00:17:27,410 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 [2022-01-11 00:17:27,411 INFO L933 BasicCegarLoop]: 1275 mSDtfsCounter, 633 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 2134 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:27,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [633 Valid, 2134 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:27,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7898 states. [2022-01-11 00:17:27,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7898 to 7896. [2022-01-11 00:17:27,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7896 states, 7895 states have (on average 1.2761241291956935) internal successors, (10075), 7895 states have internal predecessors, (10075), 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) [2022-01-11 00:17:27,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7896 states to 7896 states and 10075 transitions. [2022-01-11 00:17:27,803 INFO L78 Accepts]: Start accepts. Automaton has 7896 states and 10075 transitions. Word has length 159 [2022-01-11 00:17:27,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:27,803 INFO L470 AbstractCegarLoop]: Abstraction has 7896 states and 10075 transitions. [2022-01-11 00:17:27,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.0) internal successors, (159), 3 states have internal predecessors, (159), 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) [2022-01-11 00:17:27,804 INFO L276 IsEmpty]: Start isEmpty. Operand 7896 states and 10075 transitions. [2022-01-11 00:17:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-11 00:17:27,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:27,808 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:27,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:17:27,808 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:27,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:27,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1965583933, now seen corresponding path program 1 times [2022-01-11 00:17:27,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:27,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412873179] [2022-01-11 00:17:27,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:27,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:27,834 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:27,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:27,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412873179] [2022-01-11 00:17:27,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412873179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:27,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:27,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:27,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556437630] [2022-01-11 00:17:27,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:27,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:27,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:27,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:27,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:27,836 INFO L87 Difference]: Start difference. First operand 7896 states and 10075 transitions. Second operand has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-01-11 00:17:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:28,143 INFO L93 Difference]: Finished difference Result 13735 states and 17518 transitions. [2022-01-11 00:17:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 159 [2022-01-11 00:17:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:28,163 INFO L225 Difference]: With dead ends: 13735 [2022-01-11 00:17:28,163 INFO L226 Difference]: Without dead ends: 5928 [2022-01-11 00:17:28,173 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 [2022-01-11 00:17:28,173 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 873 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:28,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 877 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:28,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5928 states. [2022-01-11 00:17:28,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5928 to 5928. [2022-01-11 00:17:28,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5928 states, 5927 states have (on average 1.2736628985996288) internal successors, (7549), 5927 states have internal predecessors, (7549), 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) [2022-01-11 00:17:28,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5928 states to 5928 states and 7549 transitions. [2022-01-11 00:17:28,560 INFO L78 Accepts]: Start accepts. Automaton has 5928 states and 7549 transitions. Word has length 159 [2022-01-11 00:17:28,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:28,560 INFO L470 AbstractCegarLoop]: Abstraction has 5928 states and 7549 transitions. [2022-01-11 00:17:28,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.333333333333336) internal successors, (151), 3 states have internal predecessors, (151), 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) [2022-01-11 00:17:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 5928 states and 7549 transitions. [2022-01-11 00:17:28,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 00:17:28,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:28,565 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:28,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:17:28,566 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:28,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:28,566 INFO L85 PathProgramCache]: Analyzing trace with hash -1803957582, now seen corresponding path program 1 times [2022-01-11 00:17:28,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:28,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881398229] [2022-01-11 00:17:28,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:28,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:28,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:28,616 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:28,617 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:28,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881398229] [2022-01-11 00:17:28,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881398229] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:28,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:28,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:28,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834376888] [2022-01-11 00:17:28,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:28,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:28,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:28,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:28,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:28,618 INFO L87 Difference]: Start difference. First operand 5928 states and 7549 transitions. Second operand has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 00:17:29,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:29,173 INFO L93 Difference]: Finished difference Result 17350 states and 22060 transitions. [2022-01-11 00:17:29,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:29,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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 160 [2022-01-11 00:17:29,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:29,197 INFO L225 Difference]: With dead ends: 17350 [2022-01-11 00:17:29,198 INFO L226 Difference]: Without dead ends: 11511 [2022-01-11 00:17:29,209 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 [2022-01-11 00:17:29,210 INFO L933 BasicCegarLoop]: 1074 mSDtfsCounter, 775 mSDsluCounter, 848 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1922 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:29,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1922 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:29,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11511 states. [2022-01-11 00:17:29,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11511 to 11125. [2022-01-11 00:17:29,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11125 states, 11124 states have (on average 1.267529665587918) internal successors, (14100), 11124 states have internal predecessors, (14100), 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) [2022-01-11 00:17:29,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11125 states to 11125 states and 14100 transitions. [2022-01-11 00:17:29,832 INFO L78 Accepts]: Start accepts. Automaton has 11125 states and 14100 transitions. Word has length 160 [2022-01-11 00:17:29,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:29,832 INFO L470 AbstractCegarLoop]: Abstraction has 11125 states and 14100 transitions. [2022-01-11 00:17:29,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.333333333333336) internal successors, (160), 3 states have internal predecessors, (160), 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) [2022-01-11 00:17:29,832 INFO L276 IsEmpty]: Start isEmpty. Operand 11125 states and 14100 transitions. [2022-01-11 00:17:29,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-11 00:17:29,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:29,837 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:29,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:17:29,837 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:29,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:29,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1147829651, now seen corresponding path program 1 times [2022-01-11 00:17:29,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:29,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876056133] [2022-01-11 00:17:29,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:29,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:29,862 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:29,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876056133] [2022-01-11 00:17:29,862 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876056133] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:29,862 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:29,862 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:29,862 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777386445] [2022-01-11 00:17:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:29,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:29,863 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:29,864 INFO L87 Difference]: Start difference. First operand 11125 states and 14100 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-01-11 00:17:30,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:30,467 INFO L93 Difference]: Finished difference Result 22123 states and 28049 transitions. [2022-01-11 00:17:30,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:30,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 160 [2022-01-11 00:17:30,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:30,490 INFO L225 Difference]: With dead ends: 22123 [2022-01-11 00:17:30,490 INFO L226 Difference]: Without dead ends: 11043 [2022-01-11 00:17:30,504 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 [2022-01-11 00:17:30,504 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 871 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:30,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [871 Valid, 876 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:30,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11043 states. [2022-01-11 00:17:31,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11043 to 11043. [2022-01-11 00:17:31,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11043 states, 11042 states have (on average 1.2680673790979895) internal successors, (14002), 11042 states have internal predecessors, (14002), 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) [2022-01-11 00:17:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11043 states to 11043 states and 14002 transitions. [2022-01-11 00:17:31,158 INFO L78 Accepts]: Start accepts. Automaton has 11043 states and 14002 transitions. Word has length 160 [2022-01-11 00:17:31,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:31,158 INFO L470 AbstractCegarLoop]: Abstraction has 11043 states and 14002 transitions. [2022-01-11 00:17:31,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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) [2022-01-11 00:17:31,158 INFO L276 IsEmpty]: Start isEmpty. Operand 11043 states and 14002 transitions. [2022-01-11 00:17:31,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 00:17:31,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:31,163 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:31,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:17:31,164 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:31,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:31,164 INFO L85 PathProgramCache]: Analyzing trace with hash -713783413, now seen corresponding path program 1 times [2022-01-11 00:17:31,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:31,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278487514] [2022-01-11 00:17:31,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:31,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:31,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:31,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:31,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278487514] [2022-01-11 00:17:31,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278487514] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:31,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:31,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:31,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116728817] [2022-01-11 00:17:31,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:31,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:31,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:31,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:31,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:31,205 INFO L87 Difference]: Start difference. First operand 11043 states and 14002 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-01-11 00:17:32,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:32,123 INFO L93 Difference]: Finished difference Result 32248 states and 40851 transitions. [2022-01-11 00:17:32,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2022-01-11 00:17:32,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:32,161 INFO L225 Difference]: With dead ends: 32248 [2022-01-11 00:17:32,161 INFO L226 Difference]: Without dead ends: 21294 [2022-01-11 00:17:32,176 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 [2022-01-11 00:17:32,177 INFO L933 BasicCegarLoop]: 1075 mSDtfsCounter, 775 mSDsluCounter, 846 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1921 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:32,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1921 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:32,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21294 states. [2022-01-11 00:17:33,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21294 to 20692. [2022-01-11 00:17:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20692 states, 20691 states have (on average 1.2637861872311633) internal successors, (26149), 20691 states have internal predecessors, (26149), 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) [2022-01-11 00:17:33,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20692 states to 20692 states and 26149 transitions. [2022-01-11 00:17:33,095 INFO L78 Accepts]: Start accepts. Automaton has 20692 states and 26149 transitions. Word has length 161 [2022-01-11 00:17:33,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 20692 states and 26149 transitions. [2022-01-11 00:17:33,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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) [2022-01-11 00:17:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 20692 states and 26149 transitions. [2022-01-11 00:17:33,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-11 00:17:33,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:33,103 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:33,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:17:33,103 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:33,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:33,104 INFO L85 PathProgramCache]: Analyzing trace with hash -659666520, now seen corresponding path program 1 times [2022-01-11 00:17:33,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:33,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791611391] [2022-01-11 00:17:33,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:33,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:33,126 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:33,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:33,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791611391] [2022-01-11 00:17:33,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791611391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:33,127 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:33,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:33,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023299727] [2022-01-11 00:17:33,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:33,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:33,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:33,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:33,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:33,128 INFO L87 Difference]: Start difference. First operand 20692 states and 26149 transitions. Second operand has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-11 00:17:34,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:34,314 INFO L93 Difference]: Finished difference Result 41251 states and 52141 transitions. [2022-01-11 00:17:34,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:34,315 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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 161 [2022-01-11 00:17:34,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:34,351 INFO L225 Difference]: With dead ends: 41251 [2022-01-11 00:17:34,351 INFO L226 Difference]: Without dead ends: 20611 [2022-01-11 00:17:34,375 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 [2022-01-11 00:17:34,376 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 869 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 869 SdHoareTripleChecker+Valid, 875 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:34,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [869 Valid, 875 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:34,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20611 states. [2022-01-11 00:17:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20611 to 20611. [2022-01-11 00:17:35,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20611 states, 20610 states have (on average 1.2640950994662785) internal successors, (26053), 20610 states have internal predecessors, (26053), 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) [2022-01-11 00:17:35,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20611 states to 20611 states and 26053 transitions. [2022-01-11 00:17:35,540 INFO L78 Accepts]: Start accepts. Automaton has 20611 states and 26053 transitions. Word has length 161 [2022-01-11 00:17:35,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:35,540 INFO L470 AbstractCegarLoop]: Abstraction has 20611 states and 26053 transitions. [2022-01-11 00:17:35,540 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.0) internal successors, (153), 3 states have internal predecessors, (153), 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) [2022-01-11 00:17:35,540 INFO L276 IsEmpty]: Start isEmpty. Operand 20611 states and 26053 transitions. [2022-01-11 00:17:35,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 00:17:35,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:35,565 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:35,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:17:35,565 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:35,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash 10036739, now seen corresponding path program 1 times [2022-01-11 00:17:35,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:35,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631928243] [2022-01-11 00:17:35,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:35,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:35,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:35,605 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:35,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:35,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631928243] [2022-01-11 00:17:35,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631928243] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:35,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:35,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:35,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217192604] [2022-01-11 00:17:35,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:35,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:35,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:35,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:35,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:35,608 INFO L87 Difference]: Start difference. First operand 20611 states and 26053 transitions. Second operand has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-01-11 00:17:37,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:37,346 INFO L93 Difference]: Finished difference Result 59879 states and 75628 transitions. [2022-01-11 00:17:37,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:37,347 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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 162 [2022-01-11 00:17:37,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:37,406 INFO L225 Difference]: With dead ends: 59879 [2022-01-11 00:17:37,406 INFO L226 Difference]: Without dead ends: 39357 [2022-01-11 00:17:37,434 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 [2022-01-11 00:17:37,435 INFO L933 BasicCegarLoop]: 1058 mSDtfsCounter, 775 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1902 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:37,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1902 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:37,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39357 states. [2022-01-11 00:17:39,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39357 to 38491. [2022-01-11 00:17:39,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38491 states, 38490 states have (on average 1.2604312808521694) internal successors, (48514), 38490 states have internal predecessors, (48514), 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) [2022-01-11 00:17:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38491 states to 38491 states and 48514 transitions. [2022-01-11 00:17:39,296 INFO L78 Accepts]: Start accepts. Automaton has 38491 states and 48514 transitions. Word has length 162 [2022-01-11 00:17:39,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:39,297 INFO L470 AbstractCegarLoop]: Abstraction has 38491 states and 48514 transitions. [2022-01-11 00:17:39,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.0) internal successors, (162), 3 states have internal predecessors, (162), 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) [2022-01-11 00:17:39,297 INFO L276 IsEmpty]: Start isEmpty. Operand 38491 states and 48514 transitions. [2022-01-11 00:17:39,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-11 00:17:39,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:39,310 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:39,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:17:39,310 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:39,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:39,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1110721380, now seen corresponding path program 1 times [2022-01-11 00:17:39,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:39,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107154471] [2022-01-11 00:17:39,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:39,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:39,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:39,333 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:39,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:39,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107154471] [2022-01-11 00:17:39,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107154471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:39,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:39,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:39,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974043730] [2022-01-11 00:17:39,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:39,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:39,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:39,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:39,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:39,335 INFO L87 Difference]: Start difference. First operand 38491 states and 48514 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-01-11 00:17:41,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:41,631 INFO L93 Difference]: Finished difference Result 76843 states and 96865 transitions. [2022-01-11 00:17:41,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:41,631 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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 162 [2022-01-11 00:17:41,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:41,683 INFO L225 Difference]: With dead ends: 76843 [2022-01-11 00:17:41,683 INFO L226 Difference]: Without dead ends: 38411 [2022-01-11 00:17:41,703 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 [2022-01-11 00:17:41,704 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 874 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:41,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [867 Valid, 874 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38411 states. [2022-01-11 00:17:43,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38411 to 38411. [2022-01-11 00:17:43,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38411 states, 38410 states have (on average 1.260609216349909) internal successors, (48420), 38410 states have internal predecessors, (48420), 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) [2022-01-11 00:17:43,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38411 states to 38411 states and 48420 transitions. [2022-01-11 00:17:43,570 INFO L78 Accepts]: Start accepts. Automaton has 38411 states and 48420 transitions. Word has length 162 [2022-01-11 00:17:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:43,570 INFO L470 AbstractCegarLoop]: Abstraction has 38411 states and 48420 transitions. [2022-01-11 00:17:43,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 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) [2022-01-11 00:17:43,570 INFO L276 IsEmpty]: Start isEmpty. Operand 38411 states and 48420 transitions. [2022-01-11 00:17:43,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 00:17:43,585 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:43,585 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:43,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:17:43,585 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:43,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:43,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1112438019, now seen corresponding path program 1 times [2022-01-11 00:17:43,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:43,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339996333] [2022-01-11 00:17:43,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:43,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:43,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:43,643 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:43,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339996333] [2022-01-11 00:17:43,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339996333] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:43,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:43,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:43,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48189681] [2022-01-11 00:17:43,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:43,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:43,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:43,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:43,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:43,645 INFO L87 Difference]: Start difference. First operand 38411 states and 48420 transitions. Second operand has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-01-11 00:17:47,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:47,381 INFO L93 Difference]: Finished difference Result 110786 states and 139521 transitions. [2022-01-11 00:17:47,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:47,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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 163 [2022-01-11 00:17:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:47,488 INFO L225 Difference]: With dead ends: 110786 [2022-01-11 00:17:47,488 INFO L226 Difference]: Without dead ends: 72464 [2022-01-11 00:17:47,530 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 [2022-01-11 00:17:47,531 INFO L933 BasicCegarLoop]: 1023 mSDtfsCounter, 775 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 1865 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:47,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 1865 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:47,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72464 states. [2022-01-11 00:17:51,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72464 to 71406. [2022-01-11 00:17:51,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71406 states, 71405 states have (on average 1.2569287864995449) internal successors, (89751), 71405 states have internal predecessors, (89751), 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) [2022-01-11 00:17:51,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71406 states to 71406 states and 89751 transitions. [2022-01-11 00:17:51,439 INFO L78 Accepts]: Start accepts. Automaton has 71406 states and 89751 transitions. Word has length 163 [2022-01-11 00:17:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:51,440 INFO L470 AbstractCegarLoop]: Abstraction has 71406 states and 89751 transitions. [2022-01-11 00:17:51,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.333333333333336) internal successors, (163), 3 states have internal predecessors, (163), 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) [2022-01-11 00:17:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 71406 states and 89751 transitions. [2022-01-11 00:17:51,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-01-11 00:17:51,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:51,469 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:51,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:17:51,470 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:51,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:51,470 INFO L85 PathProgramCache]: Analyzing trace with hash -66563430, now seen corresponding path program 1 times [2022-01-11 00:17:51,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:51,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656624101] [2022-01-11 00:17:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:51,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:51,499 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:17:51,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:51,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656624101] [2022-01-11 00:17:51,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656624101] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:51,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:51,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:51,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348354229] [2022-01-11 00:17:51,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:51,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:51,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:51,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:51,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:51,500 INFO L87 Difference]: Start difference. First operand 71406 states and 89751 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) [2022-01-11 00:17:55,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:17:55,373 INFO L93 Difference]: Finished difference Result 142667 states and 179333 transitions. [2022-01-11 00:17:55,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:17:55,374 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 163 [2022-01-11 00:17:55,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:17:55,485 INFO L225 Difference]: With dead ends: 142667 [2022-01-11 00:17:55,485 INFO L226 Difference]: Without dead ends: 71327 [2022-01-11 00:17:55,546 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 [2022-01-11 00:17:55,547 INFO L933 BasicCegarLoop]: 873 mSDtfsCounter, 865 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:17:55,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 873 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:17:55,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71327 states. [2022-01-11 00:17:59,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71327 to 71327. [2022-01-11 00:17:59,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71327 states, 71326 states have (on average 1.2570310966547964) internal successors, (89659), 71326 states have internal predecessors, (89659), 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) [2022-01-11 00:17:59,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71327 states to 71327 states and 89659 transitions. [2022-01-11 00:17:59,645 INFO L78 Accepts]: Start accepts. Automaton has 71327 states and 89659 transitions. Word has length 163 [2022-01-11 00:17:59,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:17:59,645 INFO L470 AbstractCegarLoop]: Abstraction has 71327 states and 89659 transitions. [2022-01-11 00:17:59,645 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) [2022-01-11 00:17:59,645 INFO L276 IsEmpty]: Start isEmpty. Operand 71327 states and 89659 transitions. [2022-01-11 00:17:59,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 00:17:59,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:17:59,665 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:17:59,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:17:59,665 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:17:59,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:17:59,666 INFO L85 PathProgramCache]: Analyzing trace with hash -2073637425, now seen corresponding path program 1 times [2022-01-11 00:17:59,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:17:59,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106549496] [2022-01-11 00:17:59,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:17:59,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:17:59,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:17:59,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:17:59,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:17:59,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106549496] [2022-01-11 00:17:59,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106549496] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:17:59,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:17:59,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:17:59,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849913725] [2022-01-11 00:17:59,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:17:59,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:17:59,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:17:59,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:17:59,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:17:59,704 INFO L87 Difference]: Start difference. First operand 71327 states and 89659 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-01-11 00:18:06,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:06,569 INFO L93 Difference]: Finished difference Result 203865 states and 255838 transitions. [2022-01-11 00:18:06,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:06,570 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2022-01-11 00:18:06,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:06,789 INFO L225 Difference]: With dead ends: 203865 [2022-01-11 00:18:06,789 INFO L226 Difference]: Without dead ends: 132627 [2022-01-11 00:18:06,966 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 [2022-01-11 00:18:06,966 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 774 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 774 SdHoareTripleChecker+Valid, 1809 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:06,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [774 Valid, 1809 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:07,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132627 states. [2022-01-11 00:18:13,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132627 to 131857. [2022-01-11 00:18:14,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131857 states, 131856 states have (on average 1.2537010071593253) internal successors, (165308), 131856 states have internal predecessors, (165308), 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) [2022-01-11 00:18:14,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131857 states to 131857 states and 165308 transitions. [2022-01-11 00:18:14,424 INFO L78 Accepts]: Start accepts. Automaton has 131857 states and 165308 transitions. Word has length 164 [2022-01-11 00:18:14,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:14,425 INFO L470 AbstractCegarLoop]: Abstraction has 131857 states and 165308 transitions. [2022-01-11 00:18:14,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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) [2022-01-11 00:18:14,425 INFO L276 IsEmpty]: Start isEmpty. Operand 131857 states and 165308 transitions. [2022-01-11 00:18:14,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2022-01-11 00:18:14,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:14,465 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-11 00:18:14,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:18:14,466 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:14,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:14,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1417657937, now seen corresponding path program 1 times [2022-01-11 00:18:14,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:14,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894782392] [2022-01-11 00:18:14,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:14,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:14,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:14,488 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:18:14,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:14,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894782392] [2022-01-11 00:18:14,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894782392] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:14,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:14,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:14,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827843099] [2022-01-11 00:18:14,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:14,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:14,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:14,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:14,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:14,489 INFO L87 Difference]: Start difference. First operand 131857 states and 165308 transitions. Second operand has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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) [2022-01-11 00:18:22,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:22,123 INFO L93 Difference]: Finished difference Result 263563 states and 330441 transitions. [2022-01-11 00:18:22,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:22,123 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.0) internal successors, (156), 3 states have internal predecessors, (156), 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 164 [2022-01-11 00:18:22,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:22,464 INFO L225 Difference]: With dead ends: 263563 [2022-01-11 00:18:22,464 INFO L226 Difference]: Without dead ends: 131779 [2022-01-11 00:18:22,547 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 [2022-01-11 00:18:22,548 INFO L933 BasicCegarLoop]: 872 mSDtfsCounter, 863 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:22,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 872 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:22,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131779 states.