/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/transmitter.04.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:19:11,484 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:19:11,486 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:19:11,556 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:19:11,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:19:11,574 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:19:11,575 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:19:11,575 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:19:11,576 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:19:11,577 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:19:11,578 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:19:11,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:19:11,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:19:11,583 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:19:11,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:19:11,589 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:19:11,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 00:19:11,604 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:19:11,605 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:19:11,605 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:19:11,609 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 00:19:11,638 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:19:11,638 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:19:11,639 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:19:11,639 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:19:11,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:19:11,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:19:11,643 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:19:11,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:19:11,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:19:11,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:19:11,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:19:11,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:19:11,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:19:11,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:19:11,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:19:11,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:19:11,647 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:19:11,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:19:11,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:19:11,648 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:19:11,650 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:19:11,650 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:19:11,842 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:19:11,869 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:19:11,871 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:19:11,872 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:19:11,873 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:19:11,874 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/transmitter.04.cil.c [2022-01-11 00:19:11,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716953e1d/9e51be2b5ab24b8890d408ede924d43f/FLAG1001bdd61 [2022-01-11 00:19:12,309 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:19:12,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/transmitter.04.cil.c [2022-01-11 00:19:12,319 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716953e1d/9e51be2b5ab24b8890d408ede924d43f/FLAG1001bdd61 [2022-01-11 00:19:12,332 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716953e1d/9e51be2b5ab24b8890d408ede924d43f [2022-01-11 00:19:12,335 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:19:12,336 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:19:12,337 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:19:12,337 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:19:12,340 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:19:12,341 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,342 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b4a4f34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12, skipping insertion in model container [2022-01-11 00:19:12,342 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,346 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:19:12,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:19:12,505 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/transmitter.04.cil.c[706,719] [2022-01-11 00:19:12,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:19:12,570 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:19:12,581 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/transmitter.04.cil.c[706,719] [2022-01-11 00:19:12,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:19:12,626 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:19:12,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12 WrapperNode [2022-01-11 00:19:12,628 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:19:12,629 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:19:12,629 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:19:12,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:19:12,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,679 INFO L137 Inliner]: procedures = 36, calls = 42, calls flagged for inlining = 37, calls inlined = 70, statements flattened = 966 [2022-01-11 00:19:12,679 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:19:12,680 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:19:12,680 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:19:12,680 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:19:12,687 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,694 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,694 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,708 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,730 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:19:12,731 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:19:12,731 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:19:12,731 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:19:12,732 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (1/1) ... [2022-01-11 00:19:12,744 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:19:12,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:19:12,781 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 00:19:12,783 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 00:19:12,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:19:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:19:12,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:19:12,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:19:12,879 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:19:12,880 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:19:13,602 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:19:13,613 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:19:13,614 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-11 00:19:13,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:13 BoogieIcfgContainer [2022-01-11 00:19:13,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:19:13,617 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:19:13,617 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:19:13,618 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:19:13,620 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:13" (1/1) ... [2022-01-11 00:19:13,951 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:19:13 BasicIcfg [2022-01-11 00:19:13,951 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:19:13,953 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:19:13,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:19:13,956 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:19:13,957 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:19:12" (1/4) ... [2022-01-11 00:19:13,957 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb4b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:19:13, skipping insertion in model container [2022-01-11 00:19:13,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:19:12" (2/4) ... [2022-01-11 00:19:13,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb4b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:19:13, skipping insertion in model container [2022-01-11 00:19:13,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:19:13" (3/4) ... [2022-01-11 00:19:13,958 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ebb4b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:19:13, skipping insertion in model container [2022-01-11 00:19:13,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:19:13" (4/4) ... [2022-01-11 00:19:13,959 INFO L111 eAbstractionObserver]: Analyzing ICFG transmitter.04.cil.cTransformedIcfg [2022-01-11 00:19:13,968 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:19:13,968 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-11 00:19:14,019 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:19:14,025 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 00:19:14,026 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-11 00:19:14,060 INFO L276 IsEmpty]: Start isEmpty. Operand has 392 states, 390 states have (on average 1.541025641025641) internal successors, (601), 391 states have internal predecessors, (601), 0 states have call successors, (0), 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 00:19:14,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:14,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:14,070 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] [2022-01-11 00:19:14,071 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:14,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:14,074 INFO L85 PathProgramCache]: Analyzing trace with hash 1676494306, now seen corresponding path program 1 times [2022-01-11 00:19:14,081 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:14,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935778694] [2022-01-11 00:19:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:14,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:14,348 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 00:19:14,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:14,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935778694] [2022-01-11 00:19:14,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935778694] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:14,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:14,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:14,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14964339] [2022-01-11 00:19:14,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:14,358 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:14,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:14,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:14,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:14,394 INFO L87 Difference]: Start difference. First operand has 392 states, 390 states have (on average 1.541025641025641) internal successors, (601), 391 states have internal predecessors, (601), 0 states have call successors, (0), 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 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:14,614 INFO L93 Difference]: Finished difference Result 1061 states and 1628 transitions. [2022-01-11 00:19:14,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:14,621 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:14,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:14,641 INFO L225 Difference]: With dead ends: 1061 [2022-01-11 00:19:14,642 INFO L226 Difference]: Without dead ends: 672 [2022-01-11 00:19:14,649 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 00:19:14,653 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 509 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 1031 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:14,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 1031 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:14,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 672 states. [2022-01-11 00:19:14,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 672 to 669. [2022-01-11 00:19:14,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4820359281437125) internal successors, (990), 668 states have internal predecessors, (990), 0 states have call successors, (0), 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 00:19:14,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 990 transitions. [2022-01-11 00:19:14,768 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 990 transitions. Word has length 78 [2022-01-11 00:19:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:14,769 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 990 transitions. [2022-01-11 00:19:14,769 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,770 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 990 transitions. [2022-01-11 00:19:14,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:14,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:14,772 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] [2022-01-11 00:19:14,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:19:14,773 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:14,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:14,774 INFO L85 PathProgramCache]: Analyzing trace with hash -918457663, now seen corresponding path program 1 times [2022-01-11 00:19:14,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:14,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134829829] [2022-01-11 00:19:14,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:14,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:14,872 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 00:19:14,873 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:14,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134829829] [2022-01-11 00:19:14,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134829829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:14,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:14,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:14,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442634290] [2022-01-11 00:19:14,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:14,876 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:14,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:14,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:14,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:14,878 INFO L87 Difference]: Start difference. First operand 669 states and 990 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:14,940 INFO L93 Difference]: Finished difference Result 1326 states and 1962 transitions. [2022-01-11 00:19:14,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:14,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:14,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:14,943 INFO L225 Difference]: With dead ends: 1326 [2022-01-11 00:19:14,943 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:14,948 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 00:19:14,949 INFO L933 BasicCegarLoop]: 566 mSDtfsCounter, 560 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 566 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 00:19:14,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 566 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:14,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:14,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:14,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.470059880239521) internal successors, (982), 668 states have internal predecessors, (982), 0 states have call successors, (0), 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 00:19:14,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 982 transitions. [2022-01-11 00:19:14,977 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 982 transitions. Word has length 78 [2022-01-11 00:19:14,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:14,978 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 982 transitions. [2022-01-11 00:19:14,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:14,978 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 982 transitions. [2022-01-11 00:19:14,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:14,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:14,984 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] [2022-01-11 00:19:14,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:19:14,986 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:14,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:14,991 INFO L85 PathProgramCache]: Analyzing trace with hash -564920509, now seen corresponding path program 1 times [2022-01-11 00:19:14,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:14,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974114190] [2022-01-11 00:19:14,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:14,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,072 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 00:19:15,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974114190] [2022-01-11 00:19:15,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974114190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766160964] [2022-01-11 00:19:15,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,074 INFO L87 Difference]: Start difference. First operand 669 states and 982 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,113 INFO L93 Difference]: Finished difference Result 1325 states and 1945 transitions. [2022-01-11 00:19:15,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,118 INFO L225 Difference]: With dead ends: 1325 [2022-01-11 00:19:15,118 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,121 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 00:19:15,125 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 554 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 561 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 00:19:15,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 561 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4580838323353293) internal successors, (974), 668 states have internal predecessors, (974), 0 states have call successors, (0), 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 00:19:15,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 974 transitions. [2022-01-11 00:19:15,158 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 974 transitions. Word has length 78 [2022-01-11 00:19:15,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:15,160 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 974 transitions. [2022-01-11 00:19:15,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,160 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 974 transitions. [2022-01-11 00:19:15,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:15,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:15,163 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] [2022-01-11 00:19:15,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:19:15,164 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:15,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:15,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1247599233, now seen corresponding path program 1 times [2022-01-11 00:19:15,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:15,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698151062] [2022-01-11 00:19:15,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:15,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,242 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 00:19:15,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698151062] [2022-01-11 00:19:15,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698151062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,243 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,243 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705433882] [2022-01-11 00:19:15,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,244 INFO L87 Difference]: Start difference. First operand 669 states and 974 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,285 INFO L93 Difference]: Finished difference Result 1324 states and 1928 transitions. [2022-01-11 00:19:15,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,288 INFO L225 Difference]: With dead ends: 1324 [2022-01-11 00:19:15,288 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,289 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 00:19:15,295 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 548 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 548 SdHoareTripleChecker+Valid, 556 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 00:19:15,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [548 Valid, 556 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4461077844311376) internal successors, (966), 668 states have internal predecessors, (966), 0 states have call successors, (0), 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 00:19:15,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 966 transitions. [2022-01-11 00:19:15,324 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 966 transitions. Word has length 78 [2022-01-11 00:19:15,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:15,324 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 966 transitions. [2022-01-11 00:19:15,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,325 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 966 transitions. [2022-01-11 00:19:15,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:15,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:15,325 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] [2022-01-11 00:19:15,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:19:15,326 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:15,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:15,327 INFO L85 PathProgramCache]: Analyzing trace with hash 474783619, now seen corresponding path program 1 times [2022-01-11 00:19:15,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:15,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1029024284] [2022-01-11 00:19:15,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:15,328 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,388 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 00:19:15,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1029024284] [2022-01-11 00:19:15,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1029024284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856943817] [2022-01-11 00:19:15,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,390 INFO L87 Difference]: Start difference. First operand 669 states and 966 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,443 INFO L93 Difference]: Finished difference Result 1323 states and 1911 transitions. [2022-01-11 00:19:15,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,450 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,453 INFO L225 Difference]: With dead ends: 1323 [2022-01-11 00:19:15,453 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,454 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 00:19:15,454 INFO L933 BasicCegarLoop]: 551 mSDtfsCounter, 542 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 551 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 00:19:15,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 551 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.4341317365269461) internal successors, (958), 668 states have internal predecessors, (958), 0 states have call successors, (0), 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 00:19:15,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 958 transitions. [2022-01-11 00:19:15,519 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 958 transitions. Word has length 78 [2022-01-11 00:19:15,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:15,520 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 958 transitions. [2022-01-11 00:19:15,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,523 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 958 transitions. [2022-01-11 00:19:15,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:15,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:15,529 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] [2022-01-11 00:19:15,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:19:15,529 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:15,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:15,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1766903231, now seen corresponding path program 1 times [2022-01-11 00:19:15,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:15,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686707667] [2022-01-11 00:19:15,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:15,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,579 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 00:19:15,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686707667] [2022-01-11 00:19:15,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686707667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468295906] [2022-01-11 00:19:15,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,581 INFO L87 Difference]: Start difference. First operand 669 states and 958 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,638 INFO L93 Difference]: Finished difference Result 1321 states and 1892 transitions. [2022-01-11 00:19:15,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,639 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,641 INFO L225 Difference]: With dead ends: 1321 [2022-01-11 00:19:15,641 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,643 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 00:19:15,644 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 477 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:15,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [477 Valid, 582 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.407185628742515) internal successors, (940), 668 states have internal predecessors, (940), 0 states have call successors, (0), 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 00:19:15,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 940 transitions. [2022-01-11 00:19:15,674 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 940 transitions. Word has length 78 [2022-01-11 00:19:15,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:15,674 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 940 transitions. [2022-01-11 00:19:15,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,675 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 940 transitions. [2022-01-11 00:19:15,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:15,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:15,675 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] [2022-01-11 00:19:15,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:19:15,676 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:15,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1607700704, now seen corresponding path program 1 times [2022-01-11 00:19:15,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:15,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948176882] [2022-01-11 00:19:15,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:15,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,724 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 00:19:15,724 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948176882] [2022-01-11 00:19:15,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948176882] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512484282] [2022-01-11 00:19:15,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,728 INFO L87 Difference]: Start difference. First operand 669 states and 940 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,790 INFO L93 Difference]: Finished difference Result 1320 states and 1855 transitions. [2022-01-11 00:19:15,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,796 INFO L225 Difference]: With dead ends: 1320 [2022-01-11 00:19:15,796 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,797 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 00:19:15,798 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 466 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:15,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 570 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.3802395209580838) internal successors, (922), 668 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 00:19:15,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 922 transitions. [2022-01-11 00:19:15,832 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 922 transitions. Word has length 78 [2022-01-11 00:19:15,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:15,834 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 922 transitions. [2022-01-11 00:19:15,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,835 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 922 transitions. [2022-01-11 00:19:15,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:15,835 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:15,836 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] [2022-01-11 00:19:15,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:19:15,836 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:15,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:15,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1348134019, now seen corresponding path program 1 times [2022-01-11 00:19:15,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:15,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912888515] [2022-01-11 00:19:15,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:15,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:15,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:15,876 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 00:19:15,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:15,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912888515] [2022-01-11 00:19:15,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912888515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:15,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:15,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:15,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246787502] [2022-01-11 00:19:15,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:15,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:15,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:15,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:15,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:15,879 INFO L87 Difference]: Start difference. First operand 669 states and 922 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:15,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:15,959 INFO L93 Difference]: Finished difference Result 1319 states and 1818 transitions. [2022-01-11 00:19:15,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:15,961 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:15,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:15,964 INFO L225 Difference]: With dead ends: 1319 [2022-01-11 00:19:15,965 INFO L226 Difference]: Without dead ends: 669 [2022-01-11 00:19:15,966 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 00:19:15,966 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 455 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:15,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 558 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:15,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 669 states. [2022-01-11 00:19:15,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 669 to 669. [2022-01-11 00:19:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 669 states, 668 states have (on average 1.3532934131736527) internal successors, (904), 668 states have internal predecessors, (904), 0 states have call successors, (0), 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 00:19:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 669 states to 669 states and 904 transitions. [2022-01-11 00:19:15,999 INFO L78 Accepts]: Start accepts. Automaton has 669 states and 904 transitions. Word has length 78 [2022-01-11 00:19:15,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:16,000 INFO L470 AbstractCegarLoop]: Abstraction has 669 states and 904 transitions. [2022-01-11 00:19:16,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,000 INFO L276 IsEmpty]: Start isEmpty. Operand 669 states and 904 transitions. [2022-01-11 00:19:16,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:16,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:16,001 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] [2022-01-11 00:19:16,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:19:16,001 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:16,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:16,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1993327202, now seen corresponding path program 1 times [2022-01-11 00:19:16,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:16,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118471432] [2022-01-11 00:19:16,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:16,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:16,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:16,036 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 00:19:16,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:16,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118471432] [2022-01-11 00:19:16,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118471432] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:16,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:16,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:16,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140926204] [2022-01-11 00:19:16,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:16,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:16,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:16,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:16,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:16,039 INFO L87 Difference]: Start difference. First operand 669 states and 904 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:16,117 INFO L93 Difference]: Finished difference Result 1826 states and 2467 transitions. [2022-01-11 00:19:16,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:16,118 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:16,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:16,122 INFO L225 Difference]: With dead ends: 1826 [2022-01-11 00:19:16,122 INFO L226 Difference]: Without dead ends: 1185 [2022-01-11 00:19:16,125 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 00:19:16,127 INFO L933 BasicCegarLoop]: 513 mSDtfsCounter, 424 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 936 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:16,127 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 936 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:16,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1185 states. [2022-01-11 00:19:16,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1185 to 1178. [2022-01-11 00:19:16,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 1177 states have (on average 1.3440951571792694) internal successors, (1582), 1177 states have internal predecessors, (1582), 0 states have call successors, (0), 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 00:19:16,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1582 transitions. [2022-01-11 00:19:16,188 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1582 transitions. Word has length 78 [2022-01-11 00:19:16,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:16,189 INFO L470 AbstractCegarLoop]: Abstraction has 1178 states and 1582 transitions. [2022-01-11 00:19:16,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,189 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1582 transitions. [2022-01-11 00:19:16,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:16,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:16,190 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] [2022-01-11 00:19:16,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:19:16,190 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:16,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:16,191 INFO L85 PathProgramCache]: Analyzing trace with hash 733911107, now seen corresponding path program 1 times [2022-01-11 00:19:16,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:16,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888003234] [2022-01-11 00:19:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:16,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:16,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:16,259 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 00:19:16,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:16,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888003234] [2022-01-11 00:19:16,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888003234] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:16,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:16,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:16,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145221289] [2022-01-11 00:19:16,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:16,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:16,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:16,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:16,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:16,262 INFO L87 Difference]: Start difference. First operand 1178 states and 1582 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:16,504 INFO L93 Difference]: Finished difference Result 3356 states and 4506 transitions. [2022-01-11 00:19:16,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:16,505 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:16,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:16,512 INFO L225 Difference]: With dead ends: 3356 [2022-01-11 00:19:16,512 INFO L226 Difference]: Without dead ends: 2210 [2022-01-11 00:19:16,514 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 00:19:16,514 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 1528 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1528 SdHoareTripleChecker+Valid, 2505 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:16,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1528 Valid, 2505 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2210 states. [2022-01-11 00:19:16,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2210 to 1211. [2022-01-11 00:19:16,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1211 states, 1210 states have (on average 1.3264462809917354) internal successors, (1605), 1210 states have internal predecessors, (1605), 0 states have call successors, (0), 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 00:19:16,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1211 states to 1211 states and 1605 transitions. [2022-01-11 00:19:16,592 INFO L78 Accepts]: Start accepts. Automaton has 1211 states and 1605 transitions. Word has length 78 [2022-01-11 00:19:16,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:16,593 INFO L470 AbstractCegarLoop]: Abstraction has 1211 states and 1605 transitions. [2022-01-11 00:19:16,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 5 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1211 states and 1605 transitions. [2022-01-11 00:19:16,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:16,593 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:16,594 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] [2022-01-11 00:19:16,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:19:16,594 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:16,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:16,595 INFO L85 PathProgramCache]: Analyzing trace with hash 1703492130, now seen corresponding path program 1 times [2022-01-11 00:19:16,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:16,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373138948] [2022-01-11 00:19:16,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:16,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:16,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:16,639 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 00:19:16,639 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:16,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373138948] [2022-01-11 00:19:16,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373138948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:16,640 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:16,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:16,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770066469] [2022-01-11 00:19:16,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:16,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:16,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:16,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:16,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:16,641 INFO L87 Difference]: Start difference. First operand 1211 states and 1605 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:16,759 INFO L93 Difference]: Finished difference Result 2379 states and 3152 transitions. [2022-01-11 00:19:16,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:16,760 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:16,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:16,766 INFO L225 Difference]: With dead ends: 2379 [2022-01-11 00:19:16,766 INFO L226 Difference]: Without dead ends: 1184 [2022-01-11 00:19:16,768 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 00:19:16,770 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 400 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 400 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:16,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [400 Valid, 539 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:16,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1184 states. [2022-01-11 00:19:16,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1184 to 1184. [2022-01-11 00:19:16,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 1183 states have (on average 1.3068469991546914) internal successors, (1546), 1183 states have internal predecessors, (1546), 0 states have call successors, (0), 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 00:19:16,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1546 transitions. [2022-01-11 00:19:16,861 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1546 transitions. Word has length 78 [2022-01-11 00:19:16,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:16,861 INFO L470 AbstractCegarLoop]: Abstraction has 1184 states and 1546 transitions. [2022-01-11 00:19:16,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 2 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:16,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1546 transitions. [2022-01-11 00:19:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-11 00:19:16,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:16,862 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] [2022-01-11 00:19:16,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:19:16,863 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:16,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:16,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1346710685, now seen corresponding path program 1 times [2022-01-11 00:19:16,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:16,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196560109] [2022-01-11 00:19:16,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:16,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:16,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:16,912 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 00:19:16,912 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:16,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196560109] [2022-01-11 00:19:16,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196560109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:16,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:16,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:16,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071607790] [2022-01-11 00:19:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:16,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:16,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:16,914 INFO L87 Difference]: Start difference. First operand 1184 states and 1546 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:17,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:17,075 INFO L93 Difference]: Finished difference Result 3387 states and 4389 transitions. [2022-01-11 00:19:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:17,076 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-11 00:19:17,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:17,084 INFO L225 Difference]: With dead ends: 3387 [2022-01-11 00:19:17,084 INFO L226 Difference]: Without dead ends: 2267 [2022-01-11 00:19:17,086 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 00:19:17,087 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 386 mSDsluCounter, 480 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 982 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 00:19:17,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 982 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:17,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-01-11 00:19:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2132. [2022-01-11 00:19:17,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2132 states, 2131 states have (on average 1.2857813233223838) internal successors, (2740), 2131 states have internal predecessors, (2740), 0 states have call successors, (0), 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 00:19:17,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2132 states to 2132 states and 2740 transitions. [2022-01-11 00:19:17,242 INFO L78 Accepts]: Start accepts. Automaton has 2132 states and 2740 transitions. Word has length 78 [2022-01-11 00:19:17,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:17,243 INFO L470 AbstractCegarLoop]: Abstraction has 2132 states and 2740 transitions. [2022-01-11 00:19:17,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:19:17,243 INFO L276 IsEmpty]: Start isEmpty. Operand 2132 states and 2740 transitions. [2022-01-11 00:19:17,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:19:17,244 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:17,245 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] [2022-01-11 00:19:17,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:19:17,245 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:17,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:17,245 INFO L85 PathProgramCache]: Analyzing trace with hash 1079141089, now seen corresponding path program 1 times [2022-01-11 00:19:17,245 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:17,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677409518] [2022-01-11 00:19:17,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:17,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:17,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:17,290 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 00:19:17,290 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:17,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677409518] [2022-01-11 00:19:17,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677409518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:17,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:17,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:17,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775820665] [2022-01-11 00:19:17,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:17,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:17,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:17,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:17,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:17,292 INFO L87 Difference]: Start difference. First operand 2132 states and 2740 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:19:17,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:17,539 INFO L93 Difference]: Finished difference Result 6050 states and 7752 transitions. [2022-01-11 00:19:17,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:17,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-11 00:19:17,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:17,555 INFO L225 Difference]: With dead ends: 6050 [2022-01-11 00:19:17,556 INFO L226 Difference]: Without dead ends: 4041 [2022-01-11 00:19:17,560 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 00:19:17,561 INFO L933 BasicCegarLoop]: 639 mSDtfsCounter, 358 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1123 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 00:19:17,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 1123 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:17,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4041 states. [2022-01-11 00:19:17,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4041 to 4038. [2022-01-11 00:19:17,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4038 states, 4037 states have (on average 1.2727272727272727) internal successors, (5138), 4037 states have internal predecessors, (5138), 0 states have call successors, (0), 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 00:19:17,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4038 states to 4038 states and 5138 transitions. [2022-01-11 00:19:17,841 INFO L78 Accepts]: Start accepts. Automaton has 4038 states and 5138 transitions. Word has length 79 [2022-01-11 00:19:17,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:17,841 INFO L470 AbstractCegarLoop]: Abstraction has 4038 states and 5138 transitions. [2022-01-11 00:19:17,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:19:17,842 INFO L276 IsEmpty]: Start isEmpty. Operand 4038 states and 5138 transitions. [2022-01-11 00:19:17,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-11 00:19:17,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:17,843 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] [2022-01-11 00:19:17,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:19:17,844 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:17,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:17,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1522752512, now seen corresponding path program 1 times [2022-01-11 00:19:17,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:17,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909939761] [2022-01-11 00:19:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:17,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:17,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:17,884 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 00:19:17,884 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:17,884 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909939761] [2022-01-11 00:19:17,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909939761] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:17,884 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:17,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:17,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361391101] [2022-01-11 00:19:17,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:17,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:17,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:17,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:17,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:17,886 INFO L87 Difference]: Start difference. First operand 4038 states and 5138 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:19:18,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:18,112 INFO L93 Difference]: Finished difference Result 6935 states and 8835 transitions. [2022-01-11 00:19:18,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:18,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-11 00:19:18,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:18,123 INFO L225 Difference]: With dead ends: 6935 [2022-01-11 00:19:18,123 INFO L226 Difference]: Without dead ends: 3020 [2022-01-11 00:19:18,129 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 00:19:18,129 INFO L933 BasicCegarLoop]: 502 mSDtfsCounter, 498 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 498 SdHoareTripleChecker+Valid, 502 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 00:19:18,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [498 Valid, 502 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:18,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3020 states. [2022-01-11 00:19:18,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3020 to 3020. [2022-01-11 00:19:18,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3020 states, 3019 states have (on average 1.2729380589599204) internal successors, (3843), 3019 states have internal predecessors, (3843), 0 states have call successors, (0), 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 00:19:18,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3020 states to 3020 states and 3843 transitions. [2022-01-11 00:19:18,309 INFO L78 Accepts]: Start accepts. Automaton has 3020 states and 3843 transitions. Word has length 79 [2022-01-11 00:19:18,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:18,310 INFO L470 AbstractCegarLoop]: Abstraction has 3020 states and 3843 transitions. [2022-01-11 00:19:18,310 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 00:19:18,310 INFO L276 IsEmpty]: Start isEmpty. Operand 3020 states and 3843 transitions. [2022-01-11 00:19:18,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:19:18,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:18,311 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] [2022-01-11 00:19:18,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:19:18,311 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:18,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:18,312 INFO L85 PathProgramCache]: Analyzing trace with hash -982154999, now seen corresponding path program 1 times [2022-01-11 00:19:18,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:18,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847313559] [2022-01-11 00:19:18,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:18,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:18,346 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 00:19:18,347 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:18,347 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847313559] [2022-01-11 00:19:18,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847313559] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:18,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:18,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:18,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824778813] [2022-01-11 00:19:18,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:18,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:18,348 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:18,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:18,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:18,348 INFO L87 Difference]: Start difference. First operand 3020 states and 3843 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 00:19:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:18,640 INFO L93 Difference]: Finished difference Result 8620 states and 10953 transitions. [2022-01-11 00:19:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:18,641 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-11 00:19:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:18,662 INFO L225 Difference]: With dead ends: 8620 [2022-01-11 00:19:18,663 INFO L226 Difference]: Without dead ends: 5723 [2022-01-11 00:19:18,669 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 00:19:18,670 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 408 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:18,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1067 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:18,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5723 states. [2022-01-11 00:19:18,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5723 to 5504. [2022-01-11 00:19:18,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5504 states, 5503 states have (on average 1.264764673814283) internal successors, (6960), 5503 states have internal predecessors, (6960), 0 states have call successors, (0), 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 00:19:18,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5504 states to 5504 states and 6960 transitions. [2022-01-11 00:19:18,988 INFO L78 Accepts]: Start accepts. Automaton has 5504 states and 6960 transitions. Word has length 80 [2022-01-11 00:19:18,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:18,988 INFO L470 AbstractCegarLoop]: Abstraction has 5504 states and 6960 transitions. [2022-01-11 00:19:18,988 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 00:19:18,988 INFO L276 IsEmpty]: Start isEmpty. Operand 5504 states and 6960 transitions. [2022-01-11 00:19:18,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-01-11 00:19:18,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:18,990 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] [2022-01-11 00:19:18,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:19:18,990 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:18,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:18,991 INFO L85 PathProgramCache]: Analyzing trace with hash -1563237497, now seen corresponding path program 1 times [2022-01-11 00:19:18,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:18,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724496998] [2022-01-11 00:19:18,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:18,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:19,015 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 00:19:19,015 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:19,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724496998] [2022-01-11 00:19:19,015 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724496998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:19,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:19,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:19,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521651840] [2022-01-11 00:19:19,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:19,016 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:19,016 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:19,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:19,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:19,017 INFO L87 Difference]: Start difference. First operand 5504 states and 6960 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 00:19:19,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:19,317 INFO L93 Difference]: Finished difference Result 10821 states and 13698 transitions. [2022-01-11 00:19:19,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:19,317 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2022-01-11 00:19:19,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:19,344 INFO L225 Difference]: With dead ends: 10821 [2022-01-11 00:19:19,344 INFO L226 Difference]: Without dead ends: 5390 [2022-01-11 00:19:19,352 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 00:19:19,353 INFO L933 BasicCegarLoop]: 501 mSDtfsCounter, 496 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 496 SdHoareTripleChecker+Valid, 501 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 00:19:19,353 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [496 Valid, 501 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:19,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5390 states. [2022-01-11 00:19:19,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5390 to 5390. [2022-01-11 00:19:19,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5390 states, 5389 states have (on average 1.2662831694191872) internal successors, (6824), 5389 states have internal predecessors, (6824), 0 states have call successors, (0), 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 00:19:19,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5390 states to 5390 states and 6824 transitions. [2022-01-11 00:19:19,697 INFO L78 Accepts]: Start accepts. Automaton has 5390 states and 6824 transitions. Word has length 80 [2022-01-11 00:19:19,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:19,697 INFO L470 AbstractCegarLoop]: Abstraction has 5390 states and 6824 transitions. [2022-01-11 00:19:19,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 0 states have call successors, (0), 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 00:19:19,698 INFO L276 IsEmpty]: Start isEmpty. Operand 5390 states and 6824 transitions. [2022-01-11 00:19:19,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:19:19,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:19,699 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] [2022-01-11 00:19:19,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:19:19,700 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:19,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:19,700 INFO L85 PathProgramCache]: Analyzing trace with hash -470747754, now seen corresponding path program 1 times [2022-01-11 00:19:19,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:19,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469380907] [2022-01-11 00:19:19,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:19,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:19,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:19,742 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 00:19:19,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:19,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469380907] [2022-01-11 00:19:19,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469380907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:19,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:19,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:19,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910897485] [2022-01-11 00:19:19,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:19,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:19,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:19,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:19,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:19,744 INFO L87 Difference]: Start difference. First operand 5390 states and 6824 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:19:20,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:20,257 INFO L93 Difference]: Finished difference Result 15270 states and 19298 transitions. [2022-01-11 00:19:20,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:20,258 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 00:19:20,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:20,288 INFO L225 Difference]: With dead ends: 15270 [2022-01-11 00:19:20,289 INFO L226 Difference]: Without dead ends: 10003 [2022-01-11 00:19:20,299 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 00:19:20,300 INFO L933 BasicCegarLoop]: 564 mSDtfsCounter, 408 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 408 SdHoareTripleChecker+Valid, 1038 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:20,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [408 Valid, 1038 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:20,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10003 states. [2022-01-11 00:19:20,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10003 to 9736. [2022-01-11 00:19:20,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9736 states, 9735 states have (on average 1.258346173600411) internal successors, (12250), 9735 states have internal predecessors, (12250), 0 states have call successors, (0), 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 00:19:20,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9736 states to 9736 states and 12250 transitions. [2022-01-11 00:19:20,851 INFO L78 Accepts]: Start accepts. Automaton has 9736 states and 12250 transitions. Word has length 81 [2022-01-11 00:19:20,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:20,851 INFO L470 AbstractCegarLoop]: Abstraction has 9736 states and 12250 transitions. [2022-01-11 00:19:20,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:19:20,852 INFO L276 IsEmpty]: Start isEmpty. Operand 9736 states and 12250 transitions. [2022-01-11 00:19:20,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-01-11 00:19:20,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:20,853 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] [2022-01-11 00:19:20,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:19:20,854 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:20,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:20,854 INFO L85 PathProgramCache]: Analyzing trace with hash -949819914, now seen corresponding path program 1 times [2022-01-11 00:19:20,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:20,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493370452] [2022-01-11 00:19:20,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:20,854 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:20,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:20,879 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 00:19:20,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:20,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493370452] [2022-01-11 00:19:20,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493370452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:20,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:20,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:20,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643203280] [2022-01-11 00:19:20,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:20,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:20,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:20,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:20,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:20,881 INFO L87 Difference]: Start difference. First operand 9736 states and 12250 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:19:21,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:21,511 INFO L93 Difference]: Finished difference Result 19273 states and 24266 transitions. [2022-01-11 00:19:21,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:21,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2022-01-11 00:19:21,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:21,537 INFO L225 Difference]: With dead ends: 19273 [2022-01-11 00:19:21,538 INFO L226 Difference]: Without dead ends: 9624 [2022-01-11 00:19:21,555 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 00:19:21,556 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 494 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 494 SdHoareTripleChecker+Valid, 500 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 00:19:21,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [494 Valid, 500 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:21,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9624 states. [2022-01-11 00:19:22,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9624 to 9624. [2022-01-11 00:19:22,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9624 states, 9623 states have (on average 1.2592746544736568) internal successors, (12118), 9623 states have internal predecessors, (12118), 0 states have call successors, (0), 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 00:19:22,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9624 states to 9624 states and 12118 transitions. [2022-01-11 00:19:22,133 INFO L78 Accepts]: Start accepts. Automaton has 9624 states and 12118 transitions. Word has length 81 [2022-01-11 00:19:22,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:22,133 INFO L470 AbstractCegarLoop]: Abstraction has 9624 states and 12118 transitions. [2022-01-11 00:19:22,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 00:19:22,134 INFO L276 IsEmpty]: Start isEmpty. Operand 9624 states and 12118 transitions. [2022-01-11 00:19:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-11 00:19:22,135 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:22,135 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] [2022-01-11 00:19:22,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:19:22,135 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:22,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:22,135 INFO L85 PathProgramCache]: Analyzing trace with hash -546479463, now seen corresponding path program 1 times [2022-01-11 00:19:22,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:22,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31044915] [2022-01-11 00:19:22,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:22,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:22,168 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 00:19:22,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:22,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31044915] [2022-01-11 00:19:22,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31044915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:22,169 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:22,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:22,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263888402] [2022-01-11 00:19:22,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:22,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:22,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:22,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:22,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:22,170 INFO L87 Difference]: Start difference. First operand 9624 states and 12118 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:19:22,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:22,953 INFO L93 Difference]: Finished difference Result 28397 states and 35772 transitions. [2022-01-11 00:19:22,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:22,954 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 82 [2022-01-11 00:19:22,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:22,997 INFO L225 Difference]: With dead ends: 28397 [2022-01-11 00:19:22,998 INFO L226 Difference]: Without dead ends: 18864 [2022-01-11 00:19:23,014 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 00:19:23,015 INFO L933 BasicCegarLoop]: 491 mSDtfsCounter, 401 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:23,015 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 901 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:23,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18864 states. [2022-01-11 00:19:23,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18864 to 18768. [2022-01-11 00:19:23,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18768 states, 18767 states have (on average 1.2498534661906537) internal successors, (23456), 18767 states have internal predecessors, (23456), 0 states have call successors, (0), 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 00:19:23,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18768 states to 18768 states and 23456 transitions. [2022-01-11 00:19:23,957 INFO L78 Accepts]: Start accepts. Automaton has 18768 states and 23456 transitions. Word has length 82 [2022-01-11 00:19:23,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:23,957 INFO L470 AbstractCegarLoop]: Abstraction has 18768 states and 23456 transitions. [2022-01-11 00:19:23,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 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 00:19:23,957 INFO L276 IsEmpty]: Start isEmpty. Operand 18768 states and 23456 transitions. [2022-01-11 00:19:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-01-11 00:19:23,963 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:23,963 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:23,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:19:23,964 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash 105762895, now seen corresponding path program 1 times [2022-01-11 00:19:23,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:23,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271130231] [2022-01-11 00:19:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:23,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:23,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:24,004 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:24,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:24,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271130231] [2022-01-11 00:19:24,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271130231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:24,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:24,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:24,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737863791] [2022-01-11 00:19:24,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:24,005 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:24,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:24,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:24,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:24,006 INFO L87 Difference]: Start difference. First operand 18768 states and 23456 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 00:19:25,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:25,675 INFO L93 Difference]: Finished difference Result 55783 states and 69636 transitions. [2022-01-11 00:19:25,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:25,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 102 [2022-01-11 00:19:25,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:25,773 INFO L225 Difference]: With dead ends: 55783 [2022-01-11 00:19:25,774 INFO L226 Difference]: Without dead ends: 37136 [2022-01-11 00:19:25,814 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 00:19:25,815 INFO L933 BasicCegarLoop]: 957 mSDtfsCounter, 452 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:25,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1435 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:25,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37136 states. [2022-01-11 00:19:27,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37136 to 37136. [2022-01-11 00:19:27,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37136 states, 37135 states have (on average 1.244378618553925) internal successors, (46210), 37135 states have internal predecessors, (46210), 0 states have call successors, (0), 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 00:19:27,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37136 states to 37136 states and 46210 transitions. [2022-01-11 00:19:27,873 INFO L78 Accepts]: Start accepts. Automaton has 37136 states and 46210 transitions. Word has length 102 [2022-01-11 00:19:27,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:27,873 INFO L470 AbstractCegarLoop]: Abstraction has 37136 states and 46210 transitions. [2022-01-11 00:19:27,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 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 00:19:27,873 INFO L276 IsEmpty]: Start isEmpty. Operand 37136 states and 46210 transitions. [2022-01-11 00:19:27,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 00:19:27,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:27,900 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:27,900 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:19:27,900 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:27,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:27,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1569641740, now seen corresponding path program 1 times [2022-01-11 00:19:27,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:27,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333634871] [2022-01-11 00:19:27,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:27,901 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:27,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:27,945 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:27,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:27,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333634871] [2022-01-11 00:19:27,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333634871] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:27,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:27,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:27,946 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684440714] [2022-01-11 00:19:27,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:27,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:27,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:27,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:27,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:27,948 INFO L87 Difference]: Start difference. First operand 37136 states and 46210 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 00:19:29,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:29,558 INFO L93 Difference]: Finished difference Result 55847 states and 69674 transitions. [2022-01-11 00:19:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:29,558 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 139 [2022-01-11 00:19:29,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:29,624 INFO L225 Difference]: With dead ends: 55847 [2022-01-11 00:19:29,624 INFO L226 Difference]: Without dead ends: 37136 [2022-01-11 00:19:29,655 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 00:19:29,656 INFO L933 BasicCegarLoop]: 889 mSDtfsCounter, 381 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:29,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 1359 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:29,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37136 states. [2022-01-11 00:19:31,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37136 to 37042. [2022-01-11 00:19:31,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37042 states, 37041 states have (on average 1.2337679868254097) internal successors, (45700), 37041 states have internal predecessors, (45700), 0 states have call successors, (0), 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 00:19:31,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37042 states to 37042 states and 45700 transitions. [2022-01-11 00:19:31,635 INFO L78 Accepts]: Start accepts. Automaton has 37042 states and 45700 transitions. Word has length 139 [2022-01-11 00:19:31,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:31,636 INFO L470 AbstractCegarLoop]: Abstraction has 37042 states and 45700 transitions. [2022-01-11 00:19:31,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 0 states have call successors, (0), 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 00:19:31,636 INFO L276 IsEmpty]: Start isEmpty. Operand 37042 states and 45700 transitions. [2022-01-11 00:19:31,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-01-11 00:19:31,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:31,656 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:31,656 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:19:31,657 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:31,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:31,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1566669199, now seen corresponding path program 1 times [2022-01-11 00:19:31,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:31,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347546771] [2022-01-11 00:19:31,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:31,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-01-11 00:19:31,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:31,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347546771] [2022-01-11 00:19:31,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347546771] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:31,708 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:31,708 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:19:31,708 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803334796] [2022-01-11 00:19:31,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:31,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:31,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:31,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:31,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:31,709 INFO L87 Difference]: Start difference. First operand 37042 states and 45700 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 00:19:34,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:34,112 INFO L93 Difference]: Finished difference Result 90424 states and 111548 transitions. [2022-01-11 00:19:34,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:19:34,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 139 [2022-01-11 00:19:34,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:34,208 INFO L225 Difference]: With dead ends: 90424 [2022-01-11 00:19:34,209 INFO L226 Difference]: Without dead ends: 53523 [2022-01-11 00:19:34,250 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 00:19:34,251 INFO L933 BasicCegarLoop]: 489 mSDtfsCounter, 339 mSDsluCounter, 409 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:34,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 898 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:19:34,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53523 states. [2022-01-11 00:19:36,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53523 to 53326. [2022-01-11 00:19:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53326 states, 53325 states have (on average 1.2272667604313174) internal successors, (65444), 53325 states have internal predecessors, (65444), 0 states have call successors, (0), 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 00:19:36,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53326 states to 53326 states and 65444 transitions. [2022-01-11 00:19:36,941 INFO L78 Accepts]: Start accepts. Automaton has 53326 states and 65444 transitions. Word has length 139 [2022-01-11 00:19:36,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:36,941 INFO L470 AbstractCegarLoop]: Abstraction has 53326 states and 65444 transitions. [2022-01-11 00:19:36,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 2 states have internal predecessors, (126), 0 states have call successors, (0), 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 00:19:36,941 INFO L276 IsEmpty]: Start isEmpty. Operand 53326 states and 65444 transitions. [2022-01-11 00:19:36,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 00:19:36,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:36,966 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:36,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:19:36,966 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:36,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1090138705, now seen corresponding path program 1 times [2022-01-11 00:19:36,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:36,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055657410] [2022-01-11 00:19:36,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:36,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:37,027 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 00:19:37,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:37,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055657410] [2022-01-11 00:19:37,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055657410] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:37,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:37,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:37,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797126425] [2022-01-11 00:19:37,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:37,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:37,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:37,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:37,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:37,029 INFO L87 Difference]: Start difference. First operand 53326 states and 65444 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:41,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:41,083 INFO L93 Difference]: Finished difference Result 132041 states and 163096 transitions. [2022-01-11 00:19:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:41,083 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 140 [2022-01-11 00:19:41,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:41,219 INFO L225 Difference]: With dead ends: 132041 [2022-01-11 00:19:41,219 INFO L226 Difference]: Without dead ends: 78848 [2022-01-11 00:19:41,270 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 00:19:41,271 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 1204 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1204 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:41,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1204 Valid, 1522 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78848 states. [2022-01-11 00:19:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78848 to 53614. [2022-01-11 00:19:44,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53614 states, 53613 states have (on average 1.210751123794602) internal successors, (64912), 53613 states have internal predecessors, (64912), 0 states have call successors, (0), 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 00:19:44,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53614 states to 53614 states and 64912 transitions. [2022-01-11 00:19:44,485 INFO L78 Accepts]: Start accepts. Automaton has 53614 states and 64912 transitions. Word has length 140 [2022-01-11 00:19:44,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:44,485 INFO L470 AbstractCegarLoop]: Abstraction has 53614 states and 64912 transitions. [2022-01-11 00:19:44,485 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:44,485 INFO L276 IsEmpty]: Start isEmpty. Operand 53614 states and 64912 transitions. [2022-01-11 00:19:44,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 00:19:44,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:44,512 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:44,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:19:44,512 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:44,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:44,513 INFO L85 PathProgramCache]: Analyzing trace with hash -44691761, now seen corresponding path program 1 times [2022-01-11 00:19:44,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:44,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494825478] [2022-01-11 00:19:44,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:44,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:44,563 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 00:19:44,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:44,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494825478] [2022-01-11 00:19:44,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494825478] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:44,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:44,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:44,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465792562] [2022-01-11 00:19:44,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:44,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:44,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:44,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:44,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:44,565 INFO L87 Difference]: Start difference. First operand 53614 states and 64912 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:49,279 INFO L93 Difference]: Finished difference Result 135329 states and 164904 transitions. [2022-01-11 00:19:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:49,280 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 140 [2022-01-11 00:19:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:49,418 INFO L225 Difference]: With dead ends: 135329 [2022-01-11 00:19:49,418 INFO L226 Difference]: Without dead ends: 81872 [2022-01-11 00:19:49,454 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 00:19:49,455 INFO L933 BasicCegarLoop]: 463 mSDtfsCounter, 1130 mSDsluCounter, 976 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1130 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:49,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1130 Valid, 1439 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81872 states. [2022-01-11 00:19:52,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81872 to 53902. [2022-01-11 00:19:52,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53902 states, 53901 states have (on average 1.1944119775143318) internal successors, (64380), 53901 states have internal predecessors, (64380), 0 states have call successors, (0), 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 00:19:52,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53902 states to 53902 states and 64380 transitions. [2022-01-11 00:19:52,953 INFO L78 Accepts]: Start accepts. Automaton has 53902 states and 64380 transitions. Word has length 140 [2022-01-11 00:19:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:52,954 INFO L470 AbstractCegarLoop]: Abstraction has 53902 states and 64380 transitions. [2022-01-11 00:19:52,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:52,954 INFO L276 IsEmpty]: Start isEmpty. Operand 53902 states and 64380 transitions. [2022-01-11 00:19:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-01-11 00:19:52,976 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:52,976 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:19:52,977 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:52,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:52,977 INFO L85 PathProgramCache]: Analyzing trace with hash 1219864559, now seen corresponding path program 1 times [2022-01-11 00:19:52,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:52,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936929782] [2022-01-11 00:19:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:52,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:52,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:53,027 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-01-11 00:19:53,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:53,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936929782] [2022-01-11 00:19:53,028 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936929782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:53,028 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:53,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:19:53,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788784949] [2022-01-11 00:19:53,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:53,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:19:53,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:53,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:19:53,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:19:53,029 INFO L87 Difference]: Start difference. First operand 53902 states and 64380 transitions. Second operand has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:57,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:19:57,123 INFO L93 Difference]: Finished difference Result 103995 states and 124958 transitions. [2022-01-11 00:19:57,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:19:57,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 140 [2022-01-11 00:19:57,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:19:57,214 INFO L225 Difference]: With dead ends: 103995 [2022-01-11 00:19:57,215 INFO L226 Difference]: Without dead ends: 50190 [2022-01-11 00:19:57,254 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 00:19:57,255 INFO L933 BasicCegarLoop]: 461 mSDtfsCounter, 1031 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1031 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:19:57,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1031 Valid, 1676 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:19:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50190 states. [2022-01-11 00:19:59,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50190 to 36626. [2022-01-11 00:19:59,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36626 states, 36625 states have (on average 1.1804505119453925) internal successors, (43234), 36625 states have internal predecessors, (43234), 0 states have call successors, (0), 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 00:19:59,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36626 states to 36626 states and 43234 transitions. [2022-01-11 00:19:59,805 INFO L78 Accepts]: Start accepts. Automaton has 36626 states and 43234 transitions. Word has length 140 [2022-01-11 00:19:59,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:19:59,805 INFO L470 AbstractCegarLoop]: Abstraction has 36626 states and 43234 transitions. [2022-01-11 00:19:59,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 25.0) internal successors, (125), 5 states have internal predecessors, (125), 0 states have call successors, (0), 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 00:19:59,805 INFO L276 IsEmpty]: Start isEmpty. Operand 36626 states and 43234 transitions. [2022-01-11 00:19:59,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-01-11 00:19:59,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:19:59,820 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:19:59,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:19:59,820 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:19:59,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:19:59,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1908667389, now seen corresponding path program 1 times [2022-01-11 00:19:59,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:19:59,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571840823] [2022-01-11 00:19:59,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:19:59,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:19:59,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:19:59,890 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:19:59,891 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:19:59,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571840823] [2022-01-11 00:19:59,891 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571840823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:19:59,891 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:19:59,891 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:19:59,891 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350600030] [2022-01-11 00:19:59,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:19:59,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:19:59,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:19:59,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:19:59,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:19:59,893 INFO L87 Difference]: Start difference. First operand 36626 states and 43234 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 00:20:02,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:20:02,513 INFO L93 Difference]: Finished difference Result 64898 states and 76766 transitions. [2022-01-11 00:20:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:20:02,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 143 [2022-01-11 00:20:02,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:20:02,561 INFO L225 Difference]: With dead ends: 64898 [2022-01-11 00:20:02,561 INFO L226 Difference]: Without dead ends: 36631 [2022-01-11 00:20:02,590 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 00:20:02,591 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 333 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:20:02,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1256 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:20:02,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36631 states. [2022-01-11 00:20:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36631 to 36626. [2022-01-11 00:20:05,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36626 states, 36625 states have (on average 1.1779931740614336) internal successors, (43144), 36625 states have internal predecessors, (43144), 0 states have call successors, (0), 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 00:20:05,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36626 states to 36626 states and 43144 transitions. [2022-01-11 00:20:05,208 INFO L78 Accepts]: Start accepts. Automaton has 36626 states and 43144 transitions. Word has length 143 [2022-01-11 00:20:05,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:20:05,208 INFO L470 AbstractCegarLoop]: Abstraction has 36626 states and 43144 transitions. [2022-01-11 00:20:05,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 0 states have call successors, (0), 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 00:20:05,208 INFO L276 IsEmpty]: Start isEmpty. Operand 36626 states and 43144 transitions. [2022-01-11 00:20:05,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 00:20:05,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:20:05,223 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:20:05,223 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:20:05,223 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:20:05,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:20:05,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1488439154, now seen corresponding path program 1 times [2022-01-11 00:20:05,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:20:05,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620368232] [2022-01-11 00:20:05,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:20:05,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:20:05,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:20:05,269 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-01-11 00:20:05,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:20:05,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620368232] [2022-01-11 00:20:05,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620368232] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:20:05,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:20:05,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:20:05,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249461123] [2022-01-11 00:20:05,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:20:05,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:20:05,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:20:05,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:20:05,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:20:05,270 INFO L87 Difference]: Start difference. First operand 36626 states and 43144 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 00:20:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:20:08,135 INFO L93 Difference]: Finished difference Result 80635 states and 94892 transitions. [2022-01-11 00:20:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:20:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 181 [2022-01-11 00:20:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:20:08,189 INFO L225 Difference]: With dead ends: 80635 [2022-01-11 00:20:08,190 INFO L226 Difference]: Without dead ends: 44072 [2022-01-11 00:20:08,209 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 00:20:08,210 INFO L933 BasicCegarLoop]: 469 mSDtfsCounter, 258 mSDsluCounter, 394 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 863 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:20:08,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 863 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:20:08,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44072 states. [2022-01-11 00:20:11,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44072 to 43880. [2022-01-11 00:20:11,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43880 states, 43879 states have (on average 1.1728617334032225) internal successors, (51464), 43879 states have internal predecessors, (51464), 0 states have call successors, (0), 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 00:20:11,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43880 states to 43880 states and 51464 transitions. [2022-01-11 00:20:11,121 INFO L78 Accepts]: Start accepts. Automaton has 43880 states and 51464 transitions. Word has length 181 [2022-01-11 00:20:11,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:20:11,121 INFO L470 AbstractCegarLoop]: Abstraction has 43880 states and 51464 transitions. [2022-01-11 00:20:11,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 2 states have internal predecessors, (170), 0 states have call successors, (0), 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 00:20:11,121 INFO L276 IsEmpty]: Start isEmpty. Operand 43880 states and 51464 transitions. [2022-01-11 00:20:11,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 00:20:11,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:20:11,144 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 00:20:11,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:20:11,145 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:20:11,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:20:11,145 INFO L85 PathProgramCache]: Analyzing trace with hash 503038784, now seen corresponding path program 1 times [2022-01-11 00:20:11,145 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:20:11,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454831448] [2022-01-11 00:20:11,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:20:11,146 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:20:11,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:20:11,189 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:20:11,189 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:20:11,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454831448] [2022-01-11 00:20:11,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454831448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:20:11,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:20:11,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:20:11,190 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312875256] [2022-01-11 00:20:11,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:20:11,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:20:11,191 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:20:11,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:20:11,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:20:11,191 INFO L87 Difference]: Start difference. First operand 43880 states and 51464 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)