/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_BITWISE.epf -i ../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:28:24,125 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:28:24,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:28:24,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 08:28:24,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:28:24,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:28:24,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:28:24,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:28:24,173 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:28:24,174 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:28:24,175 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:28:24,176 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:28:24,177 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:28:24,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:28:24,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:28:24,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:28:24,180 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:28:24,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:28:24,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:28:24,185 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:28:24,186 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_BITWISE.epf [2022-01-10 08:28:24,199 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:28:24,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:28:24,200 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:28:24,200 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:28:24,200 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:28:24,201 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:28:24,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:28:24,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:28:24,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 08:28:24,202 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:28:24,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:28:24,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:28:24,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 08:28:24,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:28:24,203 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 08:28:24,203 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_BITWISE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:28:24,371 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:28:24,395 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:28:24,397 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:28:24,398 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:28:24,399 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:28:24,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2022-01-10 08:28:24,445 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82cdbe2/4dcc6c41c5b441f1af3202b2066f4267/FLAGc07ef0e26 [2022-01-10 08:28:24,760 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:28:24,761 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c [2022-01-10 08:28:24,768 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82cdbe2/4dcc6c41c5b441f1af3202b2066f4267/FLAGc07ef0e26 [2022-01-10 08:28:25,173 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f82cdbe2/4dcc6c41c5b441f1af3202b2066f4267 [2022-01-10 08:28:25,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:28:25,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 08:28:25,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:28:25,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:28:25,181 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:28:25,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,182 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8efdb45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25, skipping insertion in model container [2022-01-10 08:28:25,182 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,188 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:28:25,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:28:25,308 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2022-01-10 08:28:25,359 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:28:25,366 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:28:25,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/bitvector/soft_float_3a.c.cil.c[728,741] [2022-01-10 08:28:25,389 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:28:25,398 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:28:25,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25 WrapperNode [2022-01-10 08:28:25,399 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:28:25,399 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:28:25,399 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:28:25,399 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:28:25,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,421 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,453 INFO L137 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 10, calls inlined = 8, statements flattened = 276 [2022-01-10 08:28:25,453 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:28:25,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:28:25,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:28:25,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:28:25,459 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,464 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,465 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,469 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,473 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:28:25,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:28:25,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:28:25,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:28:25,508 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (1/1) ... [2022-01-10 08:28:25,516 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:28:25,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:28:25,536 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 08:28:25,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 08:28:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:28:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:28:25,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:28:25,565 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:28:25,638 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:28:25,639 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:28:26,002 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:28:26,011 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:28:26,011 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 08:28:26,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:26 BoogieIcfgContainer [2022-01-10 08:28:26,013 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:28:26,013 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 08:28:26,013 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 08:28:26,014 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 08:28:26,016 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:26" (1/1) ... [2022-01-10 08:28:26,189 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:28:26 BasicIcfg [2022-01-10 08:28:26,189 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 08:28:26,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:28:26,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:28:26,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:28:26,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:28:25" (1/4) ... [2022-01-10 08:28:26,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b7a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:28:26, skipping insertion in model container [2022-01-10 08:28:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:28:25" (2/4) ... [2022-01-10 08:28:26,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b7a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:28:26, skipping insertion in model container [2022-01-10 08:28:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:28:26" (3/4) ... [2022-01-10 08:28:26,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@522b7a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 08:28:26, skipping insertion in model container [2022-01-10 08:28:26,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 08:28:26" (4/4) ... [2022-01-10 08:28:26,197 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_3a.c.cil.cTransformedIcfg [2022-01-10 08:28:26,201 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:28:26,201 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 08:28:26,247 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:28:26,253 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 08:28:26,253 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 08:28:26,265 INFO L276 IsEmpty]: Start isEmpty. Operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:26,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-10 08:28:26,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:28:26,270 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] [2022-01-10 08:28:26,271 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:28:26,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:28:26,275 INFO L85 PathProgramCache]: Analyzing trace with hash 611487743, now seen corresponding path program 1 times [2022-01-10 08:28:26,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:28:26,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6125525] [2022-01-10 08:28:26,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:28:26,281 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:28:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:28:26,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:28:26,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:28:26,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6125525] [2022-01-10 08:28:26,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6125525] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:28:26,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:28:26,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:28:26,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737538826] [2022-01-10 08:28:26,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:28:26,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:28:26,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:28:26,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:28:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:26,495 INFO L87 Difference]: Start difference. First operand has 72 states, 70 states have (on average 1.7714285714285714) internal successors, (124), 71 states have internal predecessors, (124), 0 states have call successors, (0), 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 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:28,556 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:30,637 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:32,977 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.29s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:35,126 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:35,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:28:35,129 INFO L93 Difference]: Finished difference Result 135 states and 228 transitions. [2022-01-10 08:28:35,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:28:35,213 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-10 08:28:35,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:28:35,218 INFO L225 Difference]: With dead ends: 135 [2022-01-10 08:28:35,219 INFO L226 Difference]: Without dead ends: 68 [2022-01-10 08:28:35,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:35,222 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 5 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:28:35,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 154 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 4 Unknown, 0 Unchecked, 8.6s Time] [2022-01-10 08:28:35,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2022-01-10 08:28:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 64. [2022-01-10 08:28:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.492063492063492) internal successors, (94), 63 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:35,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 94 transitions. [2022-01-10 08:28:35,258 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 94 transitions. Word has length 24 [2022-01-10 08:28:35,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:28:35,259 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 94 transitions. [2022-01-10 08:28:35,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:35,259 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 94 transitions. [2022-01-10 08:28:35,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-10 08:28:35,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:28:35,261 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] [2022-01-10 08:28:35,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 08:28:35,261 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:28:35,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:28:35,263 INFO L85 PathProgramCache]: Analyzing trace with hash -530159138, now seen corresponding path program 1 times [2022-01-10 08:28:35,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:28:35,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372796855] [2022-01-10 08:28:35,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:28:35,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:28:35,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:28:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:28:35,358 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:28:35,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372796855] [2022-01-10 08:28:35,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372796855] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:28:35,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:28:35,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:28:35,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836307536] [2022-01-10 08:28:35,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:28:35,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:28:35,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:28:35,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:28:35,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:35,364 INFO L87 Difference]: Start difference. First operand 64 states and 94 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:35,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:28:35,390 INFO L93 Difference]: Finished difference Result 72 states and 103 transitions. [2022-01-10 08:28:35,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:28:35,391 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-10 08:28:35,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:28:35,392 INFO L225 Difference]: With dead ends: 72 [2022-01-10 08:28:35,392 INFO L226 Difference]: Without dead ends: 64 [2022-01-10 08:28:35,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:35,394 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:28:35,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 184 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:28:35,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2022-01-10 08:28:35,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2022-01-10 08:28:35,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 63 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:35,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 93 transitions. [2022-01-10 08:28:35,398 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 93 transitions. Word has length 27 [2022-01-10 08:28:35,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:28:35,398 INFO L470 AbstractCegarLoop]: Abstraction has 64 states and 93 transitions. [2022-01-10 08:28:35,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:35,399 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 93 transitions. [2022-01-10 08:28:35,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-01-10 08:28:35,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:28:35,399 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] [2022-01-10 08:28:35,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 08:28:35,400 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:28:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:28:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash 1802121558, now seen corresponding path program 1 times [2022-01-10 08:28:35,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:28:35,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877819251] [2022-01-10 08:28:35,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:28:35,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:28:35,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:28:35,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:28:35,480 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:28:35,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877819251] [2022-01-10 08:28:35,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877819251] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:28:35,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:28:35,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:28:35,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661455999] [2022-01-10 08:28:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:28:35,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:28:35,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:28:35,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:28:35,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:35,484 INFO L87 Difference]: Start difference. First operand 64 states and 93 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:37,513 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:39,596 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:41,721 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:43,813 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:28:43,815 INFO L93 Difference]: Finished difference Result 127 states and 183 transitions. [2022-01-10 08:28:43,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:28:43,884 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 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 29 [2022-01-10 08:28:43,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:28:43,885 INFO L225 Difference]: With dead ends: 127 [2022-01-10 08:28:43,885 INFO L226 Difference]: Without dead ends: 74 [2022-01-10 08:28:43,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:28:43,886 INFO L933 BasicCegarLoop]: 89 mSDtfsCounter, 9 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:28:43,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 154 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 4 Unknown, 0 Unchecked, 8.3s Time] [2022-01-10 08:28:43,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-01-10 08:28:43,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 71. [2022-01-10 08:28:43,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 71 states, 70 states have (on average 1.4428571428571428) internal successors, (101), 70 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:43,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 101 transitions. [2022-01-10 08:28:43,892 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 101 transitions. Word has length 29 [2022-01-10 08:28:43,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:28:43,892 INFO L470 AbstractCegarLoop]: Abstraction has 71 states and 101 transitions. [2022-01-10 08:28:43,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:43,892 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 101 transitions. [2022-01-10 08:28:43,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-01-10 08:28:43,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:28:43,893 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] [2022-01-10 08:28:43,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 08:28:43,893 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:28:43,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:28:43,894 INFO L85 PathProgramCache]: Analyzing trace with hash -1552418962, now seen corresponding path program 1 times [2022-01-10 08:28:43,894 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:28:43,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951940178] [2022-01-10 08:28:43,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:28:43,894 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:28:44,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:28:44,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:28:44,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:28:44,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951940178] [2022-01-10 08:28:44,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951940178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:28:44,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:28:44,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:28:44,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069204992] [2022-01-10 08:28:44,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:28:44,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:28:44,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:28:44,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:28:44,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:28:44,187 INFO L87 Difference]: Start difference. First operand 71 states and 101 transitions. Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:46,228 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:48,321 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:50,498 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:52,674 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:54,830 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:54,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:28:54,956 INFO L93 Difference]: Finished difference Result 167 states and 227 transitions. [2022-01-10 08:28:54,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 08:28:54,956 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 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 31 [2022-01-10 08:28:54,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:28:54,957 INFO L225 Difference]: With dead ends: 167 [2022-01-10 08:28:54,957 INFO L226 Difference]: Without dead ends: 163 [2022-01-10 08:28:54,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-10 08:28:54,958 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 221 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 14 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:28:54,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 397 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 64 Invalid, 5 Unknown, 0 Unchecked, 10.6s Time] [2022-01-10 08:28:54,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2022-01-10 08:28:54,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 99. [2022-01-10 08:28:54,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 98 states have (on average 1.4591836734693877) internal successors, (143), 98 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) [2022-01-10 08:28:54,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 143 transitions. [2022-01-10 08:28:54,971 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 143 transitions. Word has length 31 [2022-01-10 08:28:54,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:28:54,972 INFO L470 AbstractCegarLoop]: Abstraction has 99 states and 143 transitions. [2022-01-10 08:28:54,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:54,972 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 143 transitions. [2022-01-10 08:28:54,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 08:28:54,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:28:54,973 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] [2022-01-10 08:28:54,973 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 08:28:54,973 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:28:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:28:54,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1491351416, now seen corresponding path program 1 times [2022-01-10 08:28:54,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:28:54,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877107124] [2022-01-10 08:28:54,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:28:54,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:28:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:28:55,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:28:55,133 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:28:55,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877107124] [2022-01-10 08:28:55,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877107124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:28:55,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:28:55,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:28:55,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044937220] [2022-01-10 08:28:55,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:28:55,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:28:55,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:28:55,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:28:55,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:28:55,135 INFO L87 Difference]: Start difference. First operand 99 states and 143 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:28:57,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:28:59,274 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:01,432 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:03,538 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:05,577 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:05,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:29:05,677 INFO L93 Difference]: Finished difference Result 185 states and 254 transitions. [2022-01-10 08:29:05,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:29:05,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-10 08:29:05,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:29:05,679 INFO L225 Difference]: With dead ends: 185 [2022-01-10 08:29:05,679 INFO L226 Difference]: Without dead ends: 151 [2022-01-10 08:29:05,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:29:05,680 INFO L933 BasicCegarLoop]: 84 mSDtfsCounter, 73 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 11 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:29:05,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 348 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time] [2022-01-10 08:29:05,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-01-10 08:29:05,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 105. [2022-01-10 08:29:05,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 104 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 149 transitions. [2022-01-10 08:29:05,687 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 149 transitions. Word has length 33 [2022-01-10 08:29:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:29:05,687 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 149 transitions. [2022-01-10 08:29:05,687 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:05,687 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 149 transitions. [2022-01-10 08:29:05,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 08:29:05,688 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:29:05,688 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] [2022-01-10 08:29:05,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 08:29:05,688 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:29:05,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:29:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1996910041, now seen corresponding path program 1 times [2022-01-10 08:29:05,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:29:05,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109772140] [2022-01-10 08:29:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:05,689 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:29:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:29:05,847 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:29:05,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109772140] [2022-01-10 08:29:05,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109772140] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:29:05,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:29:05,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:29:05,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370024606] [2022-01-10 08:29:05,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:29:05,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:29:05,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:29:05,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:29:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:29:05,850 INFO L87 Difference]: Start difference. First operand 105 states and 149 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:07,933 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:08,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:29:08,034 INFO L93 Difference]: Finished difference Result 135 states and 180 transitions. [2022-01-10 08:29:08,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:29:08,034 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-10 08:29:08,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:29:08,035 INFO L225 Difference]: With dead ends: 135 [2022-01-10 08:29:08,035 INFO L226 Difference]: Without dead ends: 130 [2022-01-10 08:29:08,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-01-10 08:29:08,036 INFO L933 BasicCegarLoop]: 86 mSDtfsCounter, 95 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:29:08,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 385 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 35 Invalid, 1 Unknown, 0 Unchecked, 2.1s Time] [2022-01-10 08:29:08,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2022-01-10 08:29:08,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 120. [2022-01-10 08:29:08,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120 states, 119 states have (on average 1.403361344537815) internal successors, (167), 119 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:08,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 167 transitions. [2022-01-10 08:29:08,043 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 167 transitions. Word has length 33 [2022-01-10 08:29:08,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:29:08,043 INFO L470 AbstractCegarLoop]: Abstraction has 120 states and 167 transitions. [2022-01-10 08:29:08,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 6 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:08,043 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 167 transitions. [2022-01-10 08:29:08,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2022-01-10 08:29:08,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:29:08,044 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] [2022-01-10 08:29:08,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 08:29:08,044 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:29:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:29:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1995986520, now seen corresponding path program 1 times [2022-01-10 08:29:08,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:29:08,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955678115] [2022-01-10 08:29:08,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:08,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:29:08,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:08,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:29:08,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:29:08,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955678115] [2022-01-10 08:29:08,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955678115] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:29:08,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:29:08,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:29:08,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296317739] [2022-01-10 08:29:08,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:29:08,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:29:08,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:29:08,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:29:08,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:29:08,129 INFO L87 Difference]: Start difference. First operand 120 states and 167 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:10,171 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:12,334 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:14,462 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:16,505 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:18,625 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:20,700 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:22,851 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:24,954 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:24,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:29:24,957 INFO L93 Difference]: Finished difference Result 289 states and 396 transitions. [2022-01-10 08:29:25,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:29:25,045 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 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 33 [2022-01-10 08:29:25,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:29:25,046 INFO L225 Difference]: With dead ends: 289 [2022-01-10 08:29:25,046 INFO L226 Difference]: Without dead ends: 178 [2022-01-10 08:29:25,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:29:25,047 INFO L933 BasicCegarLoop]: 79 mSDtfsCounter, 44 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 6 mSolverCounterUnsat, 8 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 8 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:29:25,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 175 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 66 Invalid, 8 Unknown, 0 Unchecked, 16.8s Time] [2022-01-10 08:29:25,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-01-10 08:29:25,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 115. [2022-01-10 08:29:25,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.3859649122807018) internal successors, (158), 114 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:25,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 158 transitions. [2022-01-10 08:29:25,054 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 158 transitions. Word has length 33 [2022-01-10 08:29:25,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:29:25,054 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 158 transitions. [2022-01-10 08:29:25,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:25,054 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 158 transitions. [2022-01-10 08:29:25,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-10 08:29:25,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:29:25,055 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:29:25,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 08:29:25,055 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:29:25,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:29:25,056 INFO L85 PathProgramCache]: Analyzing trace with hash -695856664, now seen corresponding path program 1 times [2022-01-10 08:29:25,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:29:25,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798535668] [2022-01-10 08:29:25,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:25,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:29:25,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:25,113 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:29:25,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:29:25,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798535668] [2022-01-10 08:29:25,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798535668] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:29:25,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:29:25,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:29:25,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985765414] [2022-01-10 08:29:25,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:29:25,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:29:25,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:29:25,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:29:25,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:29:25,115 INFO L87 Difference]: Start difference. First operand 115 states and 158 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:25,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:29:25,158 INFO L93 Difference]: Finished difference Result 120 states and 162 transitions. [2022-01-10 08:29:25,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:29:25,159 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 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 34 [2022-01-10 08:29:25,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:29:25,160 INFO L225 Difference]: With dead ends: 120 [2022-01-10 08:29:25,160 INFO L226 Difference]: Without dead ends: 107 [2022-01-10 08:29:25,160 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 [2022-01-10 08:29:25,160 INFO L933 BasicCegarLoop]: 85 mSDtfsCounter, 3 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 335 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:29:25,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 335 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:29:25,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-01-10 08:29:25,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-01-10 08:29:25,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 106 states have (on average 1.3679245283018868) internal successors, (145), 106 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:25,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 145 transitions. [2022-01-10 08:29:25,165 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 145 transitions. Word has length 34 [2022-01-10 08:29:25,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:29:25,166 INFO L470 AbstractCegarLoop]: Abstraction has 107 states and 145 transitions. [2022-01-10 08:29:25,166 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:25,166 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 145 transitions. [2022-01-10 08:29:25,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-01-10 08:29:25,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:29:25,166 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:29:25,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 08:29:25,167 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:29:25,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:29:25,171 INFO L85 PathProgramCache]: Analyzing trace with hash -205405774, now seen corresponding path program 1 times [2022-01-10 08:29:25,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:29:25,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947768434] [2022-01-10 08:29:25,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:25,172 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:29:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:29:25,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:29:25,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947768434] [2022-01-10 08:29:25,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947768434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:29:25,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:29:25,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:29:25,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290617751] [2022-01-10 08:29:25,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:29:25,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:29:25,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:29:25,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:29:25,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:29:25,302 INFO L87 Difference]: Start difference. First operand 107 states and 145 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:27,333 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:29,459 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:31,583 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:33,701 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:35,807 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:35,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:29:35,834 INFO L93 Difference]: Finished difference Result 174 states and 225 transitions. [2022-01-10 08:29:35,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:29:35,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 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 35 [2022-01-10 08:29:35,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:29:35,835 INFO L225 Difference]: With dead ends: 174 [2022-01-10 08:29:35,835 INFO L226 Difference]: Without dead ends: 131 [2022-01-10 08:29:35,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:29:35,836 INFO L933 BasicCegarLoop]: 76 mSDtfsCounter, 55 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 10 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 312 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:29:35,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 312 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 39 Invalid, 5 Unknown, 0 Unchecked, 10.5s Time] [2022-01-10 08:29:35,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-01-10 08:29:35,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 105. [2022-01-10 08:29:35,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 104 states have (on average 1.3557692307692308) internal successors, (141), 104 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:35,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 141 transitions. [2022-01-10 08:29:35,843 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 141 transitions. Word has length 35 [2022-01-10 08:29:35,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:29:35,843 INFO L470 AbstractCegarLoop]: Abstraction has 105 states and 141 transitions. [2022-01-10 08:29:35,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:35,843 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 141 transitions. [2022-01-10 08:29:35,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-10 08:29:35,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:29:35,844 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:29:35,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 08:29:35,844 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:29:35,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:29:35,844 INFO L85 PathProgramCache]: Analyzing trace with hash -43911494, now seen corresponding path program 1 times [2022-01-10 08:29:35,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 08:29:35,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106580888] [2022-01-10 08:29:35,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:35,845 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 08:29:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:29:35,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 08:29:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106580888] [2022-01-10 08:29:35,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106580888] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 08:29:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824313185] [2022-01-10 08:29:35,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:29:35,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 08:29:35,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:29:35,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 08:29:35,946 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 08:29:36,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:29:36,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:29:36,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:29:36,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:29:36,417 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:29:36,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:29:36,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824313185] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:29:36,591 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 08:29:36,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-01-10 08:29:36,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911360465] [2022-01-10 08:29:36,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 08:29:36,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:29:36,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 08:29:36,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:29:36,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:29:36,592 INFO L87 Difference]: Start difference. First operand 105 states and 141 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 08:29:38,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:40,853 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:43,027 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-01-10 08:29:45,272 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []