/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_LAZY.epf -i ../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:36:42,029 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:36:42,031 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:36:42,074 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 18:36:42,098 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:36:42,099 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:36:42,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:36:42,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:36:42,102 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:36:42,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:36:42,106 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:36:42,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:36:42,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:36:42,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:36:42,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:36:42,117 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:36:42,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:36:42,131 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:36:42,133 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:36:42,134 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:36:42,135 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_LAZY.epf [2022-01-10 18:36:42,164 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:36:42,165 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:36:42,165 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:36:42,165 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:36:42,166 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:36:42,166 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:36:42,167 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:36:42,167 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:36:42,167 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:36:42,167 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:36:42,168 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:36:42,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:36:42,168 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:36:42,168 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:36:42,169 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:36:42,169 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:36:42,169 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:36:42,169 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:36:42,169 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:36:42,169 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:36:42,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:36:42,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:36:42,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:36:42,171 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:36:42,171 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:36:42,171 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:36:42,172 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:36:42,173 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:36:42,173 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_LAZY 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:36:42,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:36:42,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:36:42,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:36:42,429 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:36:42,429 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:36:42,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2022-01-10 18:36:42,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be86987a/8f82eba194254483bff18c78b5d8ebf8/FLAG63cc8e9e8 [2022-01-10 18:36:42,879 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:36:42,880 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c [2022-01-10 18:36:42,892 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be86987a/8f82eba194254483bff18c78b5d8ebf8/FLAG63cc8e9e8 [2022-01-10 18:36:42,911 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2be86987a/8f82eba194254483bff18c78b5d8ebf8 [2022-01-10 18:36:42,913 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:36:42,915 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:36:42,918 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:36:42,918 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:36:42,921 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:36:42,922 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:36:42" (1/1) ... [2022-01-10 18:36:42,922 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7697757d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:42, skipping insertion in model container [2022-01-10 18:36:42,922 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:36:42" (1/1) ... [2022-01-10 18:36:42,927 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:36:42,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:36:43,205 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2022-01-10 18:36:43,209 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:36:43,220 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:36:43,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_lcr.3_overflow.ufo.UNBOUNDED.pals.c[6117,6130] [2022-01-10 18:36:43,267 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:36:43,283 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:36:43,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43 WrapperNode [2022-01-10 18:36:43,284 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:36:43,285 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:36:43,285 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:36:43,285 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:36:43,291 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,298 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,326 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 206 [2022-01-10 18:36:43,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:36:43,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:36:43,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:36:43,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:36:43,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,352 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,353 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,361 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,364 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:36:43,365 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:36:43,365 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:36:43,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:36:43,366 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:43,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:36:43,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:36:43,411 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 18:36:43,419 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 18:36:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:36:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:36:43,439 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:36:43,439 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:36:43,502 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:36:43,503 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:36:43,746 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:36:43,752 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:36:43,752 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:36:43,753 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:36:43 BoogieIcfgContainer [2022-01-10 18:36:43,754 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:36:43,754 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:36:43,754 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:36:43,755 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:36:43,758 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:36:43" (1/1) ... [2022-01-10 18:36:44,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:36:44 BasicIcfg [2022-01-10 18:36:44,087 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:36:44,089 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:36:44,089 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:36:44,091 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:36:44,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:36:42" (1/4) ... [2022-01-10 18:36:44,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6213fef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:36:44, skipping insertion in model container [2022-01-10 18:36:44,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:36:43" (2/4) ... [2022-01-10 18:36:44,092 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6213fef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:36:44, skipping insertion in model container [2022-01-10 18:36:44,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:36:43" (3/4) ... [2022-01-10 18:36:44,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6213fef3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:36:44, skipping insertion in model container [2022-01-10 18:36:44,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:36:44" (4/4) ... [2022-01-10 18:36:44,095 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3_overflow.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-10 18:36:44,099 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:36:44,099 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:36:44,137 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:36:44,144 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 18:36:44,144 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:36:44,156 INFO L276 IsEmpty]: Start isEmpty. Operand has 62 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 61 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 18:36:44,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 18:36:44,160 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:44,161 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] [2022-01-10 18:36:44,161 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:44,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:44,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1481866810, now seen corresponding path program 1 times [2022-01-10 18:36:44,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:44,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156278225] [2022-01-10 18:36:44,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:44,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:44,382 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 18:36:44,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:44,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156278225] [2022-01-10 18:36:44,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156278225] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:44,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:44,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:36:44,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499944438] [2022-01-10 18:36:44,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:44,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:36:44,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:44,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:36:44,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:36:44,418 INFO L87 Difference]: Start difference. First operand has 62 states, 60 states have (on average 1.6833333333333333) internal successors, (101), 61 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) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:44,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:44,444 INFO L93 Difference]: Finished difference Result 99 states and 161 transitions. [2022-01-10 18:36:44,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:36:44,446 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-10 18:36:44,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:44,454 INFO L225 Difference]: With dead ends: 99 [2022-01-10 18:36:44,455 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 18:36:44,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:36:44,460 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:44,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 18:36:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-10 18:36:44,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.6491228070175439) internal successors, (94), 57 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 18:36:44,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 94 transitions. [2022-01-10 18:36:44,490 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 94 transitions. Word has length 25 [2022-01-10 18:36:44,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:44,490 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 94 transitions. [2022-01-10 18:36:44,491 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:44,492 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 94 transitions. [2022-01-10 18:36:44,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-10 18:36:44,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:44,493 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] [2022-01-10 18:36:44,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:36:44,494 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:44,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:44,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1073042585, now seen corresponding path program 1 times [2022-01-10 18:36:44,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:44,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263979299] [2022-01-10 18:36:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:44,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:44,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:44,646 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 18:36:44,647 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:44,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263979299] [2022-01-10 18:36:44,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263979299] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:44,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:44,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:36:44,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118175439] [2022-01-10 18:36:44,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:44,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:36:44,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:44,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:36:44,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:36:44,650 INFO L87 Difference]: Start difference. First operand 58 states and 94 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:44,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:44,725 INFO L93 Difference]: Finished difference Result 98 states and 154 transitions. [2022-01-10 18:36:44,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:36:44,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-10 18:36:44,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:44,729 INFO L225 Difference]: With dead ends: 98 [2022-01-10 18:36:44,729 INFO L226 Difference]: Without dead ends: 58 [2022-01-10 18:36:44,732 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 18:36:44,733 INFO L933 BasicCegarLoop]: 92 mSDtfsCounter, 3 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:44,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 349 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:44,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-01-10 18:36:44,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2022-01-10 18:36:44,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 57 states have (on average 1.368421052631579) internal successors, (78), 57 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:44,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2022-01-10 18:36:44,739 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 25 [2022-01-10 18:36:44,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:44,739 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2022-01-10 18:36:44,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:44,740 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2022-01-10 18:36:44,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 18:36:44,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:44,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:44,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:36:44,741 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:44,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:44,742 INFO L85 PathProgramCache]: Analyzing trace with hash 536619058, now seen corresponding path program 1 times [2022-01-10 18:36:44,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:44,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377302153] [2022-01-10 18:36:44,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:44,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:44,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:44,950 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 18:36:44,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:44,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377302153] [2022-01-10 18:36:44,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377302153] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:44,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:44,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:44,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496260119] [2022-01-10 18:36:44,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:44,953 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:44,953 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:44,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:44,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:44,956 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:44,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:44,984 INFO L93 Difference]: Finished difference Result 124 states and 180 transitions. [2022-01-10 18:36:44,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:44,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 18:36:44,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:44,990 INFO L225 Difference]: With dead ends: 124 [2022-01-10 18:36:44,990 INFO L226 Difference]: Without dead ends: 88 [2022-01-10 18:36:44,990 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 18:36:44,991 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 46 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 174 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:44,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 174 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:44,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2022-01-10 18:36:44,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2022-01-10 18:36:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 85 states have (on average 1.4352941176470588) internal successors, (122), 85 states have internal predecessors, (122), 0 states have call successors, (0), 0 states 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 18:36:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 122 transitions. [2022-01-10 18:36:45,000 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 122 transitions. Word has length 40 [2022-01-10 18:36:45,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:45,001 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 122 transitions. [2022-01-10 18:36:45,001 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 122 transitions. [2022-01-10 18:36:45,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 18:36:45,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:45,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:45,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:36:45,003 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:45,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:45,003 INFO L85 PathProgramCache]: Analyzing trace with hash -1408020909, now seen corresponding path program 1 times [2022-01-10 18:36:45,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351251592] [2022-01-10 18:36:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:45,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:45,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:45,138 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 18:36:45,138 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:45,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351251592] [2022-01-10 18:36:45,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351251592] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:45,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:45,139 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:45,139 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327470653] [2022-01-10 18:36:45,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:45,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:45,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:45,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:45,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:45,141 INFO L87 Difference]: Start difference. First operand 86 states and 122 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:45,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:45,170 INFO L93 Difference]: Finished difference Result 202 states and 302 transitions. [2022-01-10 18:36:45,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:45,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 18:36:45,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:45,175 INFO L225 Difference]: With dead ends: 202 [2022-01-10 18:36:45,175 INFO L226 Difference]: Without dead ends: 138 [2022-01-10 18:36:45,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:45,177 INFO L933 BasicCegarLoop]: 115 mSDtfsCounter, 42 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:45,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 173 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:45,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2022-01-10 18:36:45,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2022-01-10 18:36:45,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 1.474074074074074) internal successors, (199), 135 states have internal predecessors, (199), 0 states have call successors, (0), 0 states 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 18:36:45,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 199 transitions. [2022-01-10 18:36:45,189 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 199 transitions. Word has length 40 [2022-01-10 18:36:45,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:45,189 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 199 transitions. [2022-01-10 18:36:45,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:45,190 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 199 transitions. [2022-01-10 18:36:45,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-01-10 18:36:45,191 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:45,191 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:45,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:36:45,191 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:45,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:45,192 INFO L85 PathProgramCache]: Analyzing trace with hash 925674740, now seen corresponding path program 1 times [2022-01-10 18:36:45,192 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:45,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466128109] [2022-01-10 18:36:45,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:45,192 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:45,398 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 18:36:45,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:45,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466128109] [2022-01-10 18:36:45,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466128109] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:45,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:45,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:36:45,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151611251] [2022-01-10 18:36:45,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:45,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:36:45,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:45,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:36:45,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:36:45,401 INFO L87 Difference]: Start difference. First operand 136 states and 199 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:45,885 INFO L93 Difference]: Finished difference Result 820 states and 1261 transitions. [2022-01-10 18:36:45,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:36:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 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 40 [2022-01-10 18:36:45,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:45,893 INFO L225 Difference]: With dead ends: 820 [2022-01-10 18:36:45,893 INFO L226 Difference]: Without dead ends: 706 [2022-01-10 18:36:45,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:36:45,902 INFO L933 BasicCegarLoop]: 72 mSDtfsCounter, 375 mSDsluCounter, 339 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:45,903 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 411 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:36:45,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2022-01-10 18:36:45,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 248. [2022-01-10 18:36:45,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 1.48582995951417) internal successors, (367), 247 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 18:36:45,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 367 transitions. [2022-01-10 18:36:45,991 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 367 transitions. Word has length 40 [2022-01-10 18:36:45,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:45,991 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 367 transitions. [2022-01-10 18:36:45,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states 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 18:36:45,991 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 367 transitions. [2022-01-10 18:36:45,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:36:45,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:45,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:45,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:36:45,993 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:45,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:45,994 INFO L85 PathProgramCache]: Analyzing trace with hash -433492746, now seen corresponding path program 1 times [2022-01-10 18:36:45,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:45,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1095898276] [2022-01-10 18:36:45,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:45,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:46,095 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 18:36:46,096 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:46,096 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1095898276] [2022-01-10 18:36:46,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1095898276] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:46,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:46,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:46,097 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000380368] [2022-01-10 18:36:46,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:46,097 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:46,097 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:46,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:46,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:46,098 INFO L87 Difference]: Start difference. First operand 248 states and 367 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:48,142 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 18:36:50,305 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 18:36:50,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:50,520 INFO L93 Difference]: Finished difference Result 600 states and 893 transitions. [2022-01-10 18:36:50,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:50,520 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 18:36:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:50,522 INFO L225 Difference]: With dead ends: 600 [2022-01-10 18:36:50,522 INFO L226 Difference]: Without dead ends: 374 [2022-01-10 18:36:50,523 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 18:36:50,524 INFO L933 BasicCegarLoop]: 117 mSDtfsCounter, 43 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:50,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 185 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 2 Unknown, 0 Unchecked, 4.3s Time] [2022-01-10 18:36:50,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-10 18:36:50,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 372. [2022-01-10 18:36:50,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.4420485175202156) internal successors, (535), 371 states have internal predecessors, (535), 0 states have call successors, (0), 0 states 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 18:36:50,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 535 transitions. [2022-01-10 18:36:50,610 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 535 transitions. Word has length 42 [2022-01-10 18:36:50,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:50,612 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 535 transitions. [2022-01-10 18:36:50,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:50,612 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 535 transitions. [2022-01-10 18:36:50,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:36:50,618 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:50,618 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:50,618 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:36:50,618 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:50,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:50,619 INFO L85 PathProgramCache]: Analyzing trace with hash -402093032, now seen corresponding path program 1 times [2022-01-10 18:36:50,619 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:50,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742084345] [2022-01-10 18:36:50,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:50,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:50,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:50,931 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 18:36:50,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:50,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742084345] [2022-01-10 18:36:50,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742084345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:50,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:50,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:36:50,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848256444] [2022-01-10 18:36:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:50,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:36:50,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:36:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:36:50,934 INFO L87 Difference]: Start difference. First operand 372 states and 535 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:51,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:51,494 INFO L93 Difference]: Finished difference Result 1428 states and 2077 transitions. [2022-01-10 18:36:51,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:36:51,495 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 18:36:51,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:51,502 INFO L225 Difference]: With dead ends: 1428 [2022-01-10 18:36:51,502 INFO L226 Difference]: Without dead ends: 1078 [2022-01-10 18:36:51,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:36:51,505 INFO L933 BasicCegarLoop]: 94 mSDtfsCounter, 324 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:51,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [324 Valid, 429 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 18:36:51,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1078 states. [2022-01-10 18:36:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1078 to 372. [2022-01-10 18:36:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 371 states have (on average 1.431266846361186) internal successors, (531), 371 states have internal predecessors, (531), 0 states have call successors, (0), 0 states 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 18:36:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 531 transitions. [2022-01-10 18:36:51,601 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 531 transitions. Word has length 42 [2022-01-10 18:36:51,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:51,602 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 531 transitions. [2022-01-10 18:36:51,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:51,602 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 531 transitions. [2022-01-10 18:36:51,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-01-10 18:36:51,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:51,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:51,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:36:51,604 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:51,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:51,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1653641233, now seen corresponding path program 1 times [2022-01-10 18:36:51,605 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:51,605 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895828741] [2022-01-10 18:36:51,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:51,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:51,733 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 18:36:51,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:51,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895828741] [2022-01-10 18:36:51,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895828741] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:51,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:51,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:51,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953262557] [2022-01-10 18:36:51,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:51,735 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:51,735 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:51,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:51,736 INFO L87 Difference]: Start difference. First operand 372 states and 531 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:51,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:51,914 INFO L93 Difference]: Finished difference Result 1000 states and 1429 transitions. [2022-01-10 18:36:51,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:51,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 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 42 [2022-01-10 18:36:51,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:51,918 INFO L225 Difference]: With dead ends: 1000 [2022-01-10 18:36:51,918 INFO L226 Difference]: Without dead ends: 650 [2022-01-10 18:36:51,919 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 18:36:51,920 INFO L933 BasicCegarLoop]: 110 mSDtfsCounter, 38 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 172 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:51,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 172 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-01-10 18:36:52,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 648. [2022-01-10 18:36:52,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 648 states, 647 states have (on average 1.401854714064915) internal successors, (907), 647 states have internal predecessors, (907), 0 states have call successors, (0), 0 states 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 18:36:52,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 907 transitions. [2022-01-10 18:36:52,116 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 907 transitions. Word has length 42 [2022-01-10 18:36:52,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:52,116 INFO L470 AbstractCegarLoop]: Abstraction has 648 states and 907 transitions. [2022-01-10 18:36:52,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 0 states have call successors, (0), 0 states 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 18:36:52,117 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 907 transitions. [2022-01-10 18:36:52,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 18:36:52,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:52,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:52,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:36:52,119 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:52,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:52,120 INFO L85 PathProgramCache]: Analyzing trace with hash -518430976, now seen corresponding path program 1 times [2022-01-10 18:36:52,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:52,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937046425] [2022-01-10 18:36:52,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:52,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:52,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:52,243 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 18:36:52,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:52,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937046425] [2022-01-10 18:36:52,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937046425] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:52,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:52,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:52,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523913568] [2022-01-10 18:36:52,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:52,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:52,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:52,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:52,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:52,246 INFO L87 Difference]: Start difference. First operand 648 states and 907 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:36:52,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:52,469 INFO L93 Difference]: Finished difference Result 1458 states and 2059 transitions. [2022-01-10 18:36:52,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:52,470 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 18:36:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:52,474 INFO L225 Difference]: With dead ends: 1458 [2022-01-10 18:36:52,474 INFO L226 Difference]: Without dead ends: 832 [2022-01-10 18:36:52,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 18:36:52,477 INFO L933 BasicCegarLoop]: 93 mSDtfsCounter, 30 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:52,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 144 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:52,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-10 18:36:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 830. [2022-01-10 18:36:52,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 829 states have (on average 1.4004825090470445) internal successors, (1161), 829 states have internal predecessors, (1161), 0 states have call successors, (0), 0 states 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 18:36:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 1161 transitions. [2022-01-10 18:36:52,672 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 1161 transitions. Word has length 43 [2022-01-10 18:36:52,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:52,673 INFO L470 AbstractCegarLoop]: Abstraction has 830 states and 1161 transitions. [2022-01-10 18:36:52,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:36:52,673 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 1161 transitions. [2022-01-10 18:36:52,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-01-10 18:36:52,674 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:52,674 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:52,674 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:36:52,674 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:52,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 392160730, now seen corresponding path program 1 times [2022-01-10 18:36:52,675 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:52,675 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1085432912] [2022-01-10 18:36:52,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:52,675 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:52,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:52,790 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 18:36:52,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:52,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1085432912] [2022-01-10 18:36:52,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1085432912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:52,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:52,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:36:52,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491147547] [2022-01-10 18:36:52,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:52,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:36:52,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:52,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:36:52,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:36:52,792 INFO L87 Difference]: Start difference. First operand 830 states and 1161 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:36:53,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:53,103 INFO L93 Difference]: Finished difference Result 1101 states and 1544 transitions. [2022-01-10 18:36:53,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:36:53,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 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 43 [2022-01-10 18:36:53,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:53,107 INFO L225 Difference]: With dead ends: 1101 [2022-01-10 18:36:53,107 INFO L226 Difference]: Without dead ends: 1099 [2022-01-10 18:36:53,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 18:36:53,108 INFO L933 BasicCegarLoop]: 97 mSDtfsCounter, 179 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 323 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:53,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 323 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:53,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1099 states. [2022-01-10 18:36:53,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1099 to 854. [2022-01-10 18:36:53,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.3751465416178195) internal successors, (1173), 853 states have internal predecessors, (1173), 0 states have call successors, (0), 0 states 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 18:36:53,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1173 transitions. [2022-01-10 18:36:53,287 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1173 transitions. Word has length 43 [2022-01-10 18:36:53,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:53,287 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1173 transitions. [2022-01-10 18:36:53,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states 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 18:36:53,288 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1173 transitions. [2022-01-10 18:36:53,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:36:53,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:53,289 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:53,289 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:36:53,289 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:53,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:53,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1914712865, now seen corresponding path program 1 times [2022-01-10 18:36:53,290 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:53,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951037970] [2022-01-10 18:36:53,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:53,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:53,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:53,370 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:36:53,371 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:53,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951037970] [2022-01-10 18:36:53,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951037970] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:36:53,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:36:53,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:36:53,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921404818] [2022-01-10 18:36:53,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:36:53,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:36:53,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:36:53,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:36:53,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:36:53,373 INFO L87 Difference]: Start difference. First operand 854 states and 1173 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 18:36:53,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:36:53,564 INFO L93 Difference]: Finished difference Result 1686 states and 2323 transitions. [2022-01-10 18:36:53,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:36:53,565 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2022-01-10 18:36:53,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:36:53,568 INFO L225 Difference]: With dead ends: 1686 [2022-01-10 18:36:53,568 INFO L226 Difference]: Without dead ends: 856 [2022-01-10 18:36:53,569 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 18:36:53,570 INFO L933 BasicCegarLoop]: 96 mSDtfsCounter, 31 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:36:53,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:36:53,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 856 states. [2022-01-10 18:36:53,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 856 to 854. [2022-01-10 18:36:53,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 853 states have (on average 1.3563892145369285) internal successors, (1157), 853 states have internal predecessors, (1157), 0 states have call successors, (0), 0 states 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 18:36:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1157 transitions. [2022-01-10 18:36:53,742 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1157 transitions. Word has length 63 [2022-01-10 18:36:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:36:53,742 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1157 transitions. [2022-01-10 18:36:53,742 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states 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 18:36:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1157 transitions. [2022-01-10 18:36:53,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:36:53,743 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:36:53,743 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:36:53,743 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:36:53,743 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:36:53,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:36:53,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1557394878, now seen corresponding path program 1 times [2022-01-10 18:36:53,744 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:36:53,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686359808] [2022-01-10 18:36:53,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:53,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:36:53,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:36:54,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 18:36:54,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:36:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686359808] [2022-01-10 18:36:54,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686359808] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 18:36:54,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2089842631] [2022-01-10 18:36:54,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:36:54,438 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 18:36:54,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:36:54,448 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 18:36:54,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process