/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_floodmax.3.1.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 18:31:27,306 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 18:31:27,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 18:31:27,346 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 18:31:27,346 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 18:31:27,354 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 18:31:27,356 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 18:31:27,358 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 18:31:27,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 18:31:27,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 18:31:27,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 18:31:27,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 18:31:27,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 18:31:27,366 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 18:31:27,367 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 18:31:27,369 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 18:31:27,370 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 18:31:27,370 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 18:31:27,372 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 18:31:27,374 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 18:31:27,375 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 18:31:27,376 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 18:31:27,377 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 18:31:27,378 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 18:31:27,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 18:31:27,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 18:31:27,387 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 18:31:27,388 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 18:31:27,390 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 18:31:27,412 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 18:31:27,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 18:31:27,413 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 18:31:27,413 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 18:31:27,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 18:31:27,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 18:31:27,414 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 18:31:27,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 18:31:27,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 18:31:27,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 18:31:27,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 18:31:27,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 18:31:27,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 18:31:27,416 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:31:27,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-10 18:31:27,417 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 18:31:27,418 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-10 18:31:27,418 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 18:31:27,557 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 18:31:27,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 18:31:27,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 18:31:27,571 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 18:31:27,572 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 18:31:27,572 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2022-01-10 18:31:27,608 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e9037cb/6ee0b06b9f854d2c8df726b18f122a29/FLAGf9b015ffc [2022-01-10 18:31:28,014 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 18:31:28,015 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded/pals_floodmax.3.1.ufo.UNBOUNDED.pals.c [2022-01-10 18:31:28,025 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e9037cb/6ee0b06b9f854d2c8df726b18f122a29/FLAGf9b015ffc [2022-01-10 18:31:28,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e8e9037cb/6ee0b06b9f854d2c8df726b18f122a29 [2022-01-10 18:31:28,395 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 18:31:28,396 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-10 18:31:28,397 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 18:31:28,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 18:31:28,401 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 18:31:28,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9cf62e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28, skipping insertion in model container [2022-01-10 18:31:28,403 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 18:31:28,436 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 18:31:28,596 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_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2022-01-10 18:31:28,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:31:28,610 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 18:31:28,672 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_floodmax.3.1.ufo.UNBOUNDED.pals.c[11552,11565] [2022-01-10 18:31:28,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 18:31:28,682 INFO L208 MainTranslator]: Completed translation [2022-01-10 18:31:28,683 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28 WrapperNode [2022-01-10 18:31:28,683 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 18:31:28,697 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 18:31:28,697 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 18:31:28,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 18:31:28,702 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,710 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,730 INFO L137 Inliner]: procedures = 23, calls = 14, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 414 [2022-01-10 18:31:28,730 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 18:31:28,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 18:31:28,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 18:31:28,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 18:31:28,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,737 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,741 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,747 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 18:31:28,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 18:31:28,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 18:31:28,756 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 18:31:28,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (1/1) ... [2022-01-10 18:31:28,761 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 18:31:28,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 18:31:28,804 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 18:31:28,853 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 18:31:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 18:31:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 18:31:28,857 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 18:31:28,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 18:31:28,972 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 18:31:28,973 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 18:31:29,313 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 18:31:29,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 18:31:29,319 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-10 18:31:29,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:29 BoogieIcfgContainer [2022-01-10 18:31:29,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 18:31:29,321 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-10 18:31:29,322 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-10 18:31:29,322 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-10 18:31:29,325 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:29" (1/1) ... [2022-01-10 18:31:29,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:31:29 BasicIcfg [2022-01-10 18:31:29,521 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-10 18:31:29,522 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 18:31:29,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 18:31:29,524 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 18:31:29,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:31:28" (1/4) ... [2022-01-10 18:31:29,525 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a46948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:29, skipping insertion in model container [2022-01-10 18:31:29,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:31:28" (2/4) ... [2022-01-10 18:31:29,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a46948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:31:29, skipping insertion in model container [2022-01-10 18:31:29,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:31:29" (3/4) ... [2022-01-10 18:31:29,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17a46948 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.01 06:31:29, skipping insertion in model container [2022-01-10 18:31:29,526 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 10.01 06:31:29" (4/4) ... [2022-01-10 18:31:29,528 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.1.ufo.UNBOUNDED.pals.cTransformedIcfg [2022-01-10 18:31:29,534 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 18:31:29,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 18:31:29,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 18:31:29,587 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 18:31:29,587 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 18:31:29,601 INFO L276 IsEmpty]: Start isEmpty. Operand has 131 states, 129 states have (on average 1.7364341085271318) internal successors, (224), 130 states have internal predecessors, (224), 0 states have call successors, (0), 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 18:31:29,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:31:29,608 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:29,609 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] [2022-01-10 18:31:29,609 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:29,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:29,613 INFO L85 PathProgramCache]: Analyzing trace with hash -1332070561, now seen corresponding path program 1 times [2022-01-10 18:31:29,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:29,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473514178] [2022-01-10 18:31:29,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:29,623 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:29,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:29,921 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 18:31:29,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:29,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473514178] [2022-01-10 18:31:29,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473514178] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:29,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:29,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 18:31:29,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686921517] [2022-01-10 18:31:29,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:29,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-01-10 18:31:29,928 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-01-10 18:31:29,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-01-10 18:31:29,951 INFO L87 Difference]: Start difference. First operand has 131 states, 129 states have (on average 1.7364341085271318) internal successors, (224), 130 states have internal predecessors, (224), 0 states have call successors, (0), 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 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 18:31:29,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:29,981 INFO L93 Difference]: Finished difference Result 208 states and 355 transitions. [2022-01-10 18:31:29,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-01-10 18:31:29,982 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 18:31:29,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:29,991 INFO L225 Difference]: With dead ends: 208 [2022-01-10 18:31:29,991 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 18:31:29,993 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 18:31:29,999 INFO L933 BasicCegarLoop]: 217 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, 217 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 18:31:29,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 18:31:30,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-01-10 18:31:30,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.7222222222222223) internal successors, (217), 126 states have internal predecessors, (217), 0 states have call successors, (0), 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 18:31:30,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 217 transitions. [2022-01-10 18:31:30,034 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 217 transitions. Word has length 37 [2022-01-10 18:31:30,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,035 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 217 transitions. [2022-01-10 18:31:30,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 0 states have call successors, (0), 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 18:31:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 217 transitions. [2022-01-10 18:31:30,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-10 18:31:30,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,038 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] [2022-01-10 18:31:30,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 18:31:30,039 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1740894786, now seen corresponding path program 1 times [2022-01-10 18:31:30,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387815286] [2022-01-10 18:31:30,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,199 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 18:31:30,200 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,200 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387815286] [2022-01-10 18:31:30,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387815286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,200 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,201 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:30,201 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311242079] [2022-01-10 18:31:30,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:30,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:30,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:30,204 INFO L87 Difference]: Start difference. First operand 127 states and 217 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 18:31:30,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,288 INFO L93 Difference]: Finished difference Result 207 states and 348 transitions. [2022-01-10 18:31:30,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 18:31:30,289 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 37 [2022-01-10 18:31:30,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,290 INFO L225 Difference]: With dead ends: 207 [2022-01-10 18:31:30,290 INFO L226 Difference]: Without dead ends: 127 [2022-01-10 18:31:30,290 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 18:31:30,291 INFO L933 BasicCegarLoop]: 215 mSDtfsCounter, 3 mSDsluCounter, 621 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 836 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 836 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2022-01-10 18:31:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 127. [2022-01-10 18:31:30,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 126 states have (on average 1.5555555555555556) internal successors, (196), 126 states have internal predecessors, (196), 0 states have call successors, (0), 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 18:31:30,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 196 transitions. [2022-01-10 18:31:30,297 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 196 transitions. Word has length 37 [2022-01-10 18:31:30,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,297 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 196 transitions. [2022-01-10 18:31:30,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 0 states have call successors, (0), 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 18:31:30,297 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 196 transitions. [2022-01-10 18:31:30,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 18:31:30,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 18:31:30,302 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1478709749, now seen corresponding path program 1 times [2022-01-10 18:31:30,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335240679] [2022-01-10 18:31:30,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,449 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 18:31:30,449 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335240679] [2022-01-10 18:31:30,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335240679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:30,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029754871] [2022-01-10 18:31:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:30,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:30,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:30,451 INFO L87 Difference]: Start difference. First operand 127 states and 196 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:31:30,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,486 INFO L93 Difference]: Finished difference Result 270 states and 433 transitions. [2022-01-10 18:31:30,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:30,487 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 57 [2022-01-10 18:31:30,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,489 INFO L225 Difference]: With dead ends: 270 [2022-01-10 18:31:30,489 INFO L226 Difference]: Without dead ends: 194 [2022-01-10 18:31:30,492 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 18:31:30,495 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 101 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 350 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-01-10 18:31:30,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 191. [2022-01-10 18:31:30,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 1.568421052631579) internal successors, (298), 190 states have internal predecessors, (298), 0 states have call successors, (0), 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 18:31:30,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 298 transitions. [2022-01-10 18:31:30,511 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 298 transitions. Word has length 57 [2022-01-10 18:31:30,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,511 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 298 transitions. [2022-01-10 18:31:30,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 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 18:31:30,511 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 298 transitions. [2022-01-10 18:31:30,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-01-10 18:31:30,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 18:31:30,512 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,513 INFO L85 PathProgramCache]: Analyzing trace with hash -948064413, now seen corresponding path program 1 times [2022-01-10 18:31:30,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448112955] [2022-01-10 18:31:30,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,629 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 18:31:30,630 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448112955] [2022-01-10 18:31:30,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448112955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:30,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146149922] [2022-01-10 18:31:30,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:30,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:30,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:30,631 INFO L87 Difference]: Start difference. First operand 191 states and 298 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:31:30,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,670 INFO L93 Difference]: Finished difference Result 536 states and 831 transitions. [2022-01-10 18:31:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 59 [2022-01-10 18:31:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,671 INFO L225 Difference]: With dead ends: 536 [2022-01-10 18:31:30,672 INFO L226 Difference]: Without dead ends: 370 [2022-01-10 18:31:30,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:30,673 INFO L933 BasicCegarLoop]: 270 mSDtfsCounter, 432 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 432 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [432 Valid, 447 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-10 18:31:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 368. [2022-01-10 18:31:30,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.553133514986376) internal successors, (570), 367 states have internal predecessors, (570), 0 states have call successors, (0), 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 18:31:30,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 570 transitions. [2022-01-10 18:31:30,683 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 570 transitions. Word has length 59 [2022-01-10 18:31:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,683 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 570 transitions. [2022-01-10 18:31:30,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 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 18:31:30,683 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 570 transitions. [2022-01-10 18:31:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-01-10 18:31:30,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,685 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 18:31:30,685 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 1639702766, now seen corresponding path program 1 times [2022-01-10 18:31:30,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713367980] [2022-01-10 18:31:30,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,739 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 18:31:30,739 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713367980] [2022-01-10 18:31:30,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713367980] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:30,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174292994] [2022-01-10 18:31:30,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:30,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:30,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:30,740 INFO L87 Difference]: Start difference. First operand 368 states and 570 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:31:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,754 INFO L93 Difference]: Finished difference Result 1066 states and 1646 transitions. [2022-01-10 18:31:30,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 60 [2022-01-10 18:31:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,756 INFO L225 Difference]: With dead ends: 1066 [2022-01-10 18:31:30,756 INFO L226 Difference]: Without dead ends: 726 [2022-01-10 18:31:30,757 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 18:31:30,758 INFO L933 BasicCegarLoop]: 366 mSDtfsCounter, 185 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 553 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 726 states. [2022-01-10 18:31:30,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 726 to 370. [2022-01-10 18:31:30,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 369 states have (on average 1.5501355013550135) internal successors, (572), 369 states have internal predecessors, (572), 0 states have call successors, (0), 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 18:31:30,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 572 transitions. [2022-01-10 18:31:30,767 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 572 transitions. Word has length 60 [2022-01-10 18:31:30,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,768 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 572 transitions. [2022-01-10 18:31:30,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 0 states have call successors, (0), 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 18:31:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 572 transitions. [2022-01-10 18:31:30,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:31:30,769 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 18:31:30,769 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,769 INFO L85 PathProgramCache]: Analyzing trace with hash 794357726, now seen corresponding path program 1 times [2022-01-10 18:31:30,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532468523] [2022-01-10 18:31:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,819 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 18:31:30,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532468523] [2022-01-10 18:31:30,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532468523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:30,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882907628] [2022-01-10 18:31:30,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:30,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:30,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:30,820 INFO L87 Difference]: Start difference. First operand 370 states and 572 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:30,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,834 INFO L93 Difference]: Finished difference Result 638 states and 1018 transitions. [2022-01-10 18:31:30,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:30,835 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 18:31:30,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,836 INFO L225 Difference]: With dead ends: 638 [2022-01-10 18:31:30,836 INFO L226 Difference]: Without dead ends: 489 [2022-01-10 18:31:30,836 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 18:31:30,837 INFO L933 BasicCegarLoop]: 282 mSDtfsCounter, 108 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 453 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 18:31:30,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 453 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 489 states. [2022-01-10 18:31:30,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 489 to 487. [2022-01-10 18:31:30,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 486 states have (on average 1.5740740740740742) internal successors, (765), 486 states have internal predecessors, (765), 0 states have call successors, (0), 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 18:31:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 765 transitions. [2022-01-10 18:31:30,847 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 765 transitions. Word has length 61 [2022-01-10 18:31:30,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,847 INFO L470 AbstractCegarLoop]: Abstraction has 487 states and 765 transitions. [2022-01-10 18:31:30,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:30,847 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 765 transitions. [2022-01-10 18:31:30,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:31:30,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,848 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 18:31:30,848 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,848 INFO L85 PathProgramCache]: Analyzing trace with hash -2023927091, now seen corresponding path program 1 times [2022-01-10 18:31:30,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323277539] [2022-01-10 18:31:30,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:30,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:30,911 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 18:31:30,911 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:30,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323277539] [2022-01-10 18:31:30,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323277539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:30,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:30,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:30,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346870341] [2022-01-10 18:31:30,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:30,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:30,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:30,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:30,913 INFO L87 Difference]: Start difference. First operand 487 states and 765 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:30,959 INFO L93 Difference]: Finished difference Result 1421 states and 2231 transitions. [2022-01-10 18:31:30,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:30,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 18:31:30,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:30,963 INFO L225 Difference]: With dead ends: 1421 [2022-01-10 18:31:30,963 INFO L226 Difference]: Without dead ends: 946 [2022-01-10 18:31:30,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:30,965 INFO L933 BasicCegarLoop]: 299 mSDtfsCounter, 392 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 476 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:30,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 476 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:30,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 946 states. [2022-01-10 18:31:30,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 946 to 944. [2022-01-10 18:31:30,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 944 states, 943 states have (on average 1.5588547189819724) internal successors, (1470), 943 states have internal predecessors, (1470), 0 states have call successors, (0), 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 18:31:30,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 944 states to 944 states and 1470 transitions. [2022-01-10 18:31:30,990 INFO L78 Accepts]: Start accepts. Automaton has 944 states and 1470 transitions. Word has length 61 [2022-01-10 18:31:30,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:30,990 INFO L470 AbstractCegarLoop]: Abstraction has 944 states and 1470 transitions. [2022-01-10 18:31:30,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:30,991 INFO L276 IsEmpty]: Start isEmpty. Operand 944 states and 1470 transitions. [2022-01-10 18:31:30,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-01-10 18:31:30,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:30,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:30,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 18:31:30,992 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:30,992 INFO L85 PathProgramCache]: Analyzing trace with hash 872546980, now seen corresponding path program 1 times [2022-01-10 18:31:30,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:30,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554787239] [2022-01-10 18:31:30,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:30,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:31,115 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 18:31:31,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:31,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554787239] [2022-01-10 18:31:31,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554787239] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:31,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:31,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:31,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048855961] [2022-01-10 18:31:31,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:31,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:31,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:31,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:31,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:31,116 INFO L87 Difference]: Start difference. First operand 944 states and 1470 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:31,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:31,171 INFO L93 Difference]: Finished difference Result 2374 states and 3790 transitions. [2022-01-10 18:31:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 61 [2022-01-10 18:31:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:31,177 INFO L225 Difference]: With dead ends: 2374 [2022-01-10 18:31:31,177 INFO L226 Difference]: Without dead ends: 1620 [2022-01-10 18:31:31,178 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 18:31:31,178 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 103 mSDsluCounter, 169 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 363 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:31,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 363 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:31,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1620 states. [2022-01-10 18:31:31,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1620 to 1606. [2022-01-10 18:31:31,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1605 states have (on average 1.5725856697819314) internal successors, (2524), 1605 states have internal predecessors, (2524), 0 states have call successors, (0), 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 18:31:31,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2524 transitions. [2022-01-10 18:31:31,231 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2524 transitions. Word has length 61 [2022-01-10 18:31:31,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:31,233 INFO L470 AbstractCegarLoop]: Abstraction has 1606 states and 2524 transitions. [2022-01-10 18:31:31,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 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 18:31:31,234 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2524 transitions. [2022-01-10 18:31:31,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-01-10 18:31:31,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:31,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:31,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 18:31:31,235 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:31,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1723257412, now seen corresponding path program 1 times [2022-01-10 18:31:31,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:31,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845571465] [2022-01-10 18:31:31,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:31,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:31,310 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 18:31:31,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:31,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845571465] [2022-01-10 18:31:31,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845571465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:31,311 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:31,311 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:31,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536902956] [2022-01-10 18:31:31,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:31,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:31,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:31,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:31,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:31,312 INFO L87 Difference]: Start difference. First operand 1606 states and 2524 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 18:31:31,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:31,454 INFO L93 Difference]: Finished difference Result 4666 states and 7326 transitions. [2022-01-10 18:31:31,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:31,455 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 18:31:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:31,462 INFO L225 Difference]: With dead ends: 4666 [2022-01-10 18:31:31,462 INFO L226 Difference]: Without dead ends: 3122 [2022-01-10 18:31:31,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:31,465 INFO L933 BasicCegarLoop]: 259 mSDtfsCounter, 407 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 407 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:31,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [407 Valid, 436 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:31,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2022-01-10 18:31:31,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3120. [2022-01-10 18:31:31,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3120 states, 3119 states have (on average 1.5607566527733248) internal successors, (4868), 3119 states have internal predecessors, (4868), 0 states have call successors, (0), 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 18:31:31,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3120 states to 3120 states and 4868 transitions. [2022-01-10 18:31:31,582 INFO L78 Accepts]: Start accepts. Automaton has 3120 states and 4868 transitions. Word has length 63 [2022-01-10 18:31:31,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:31,583 INFO L470 AbstractCegarLoop]: Abstraction has 3120 states and 4868 transitions. [2022-01-10 18:31:31,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 18:31:31,584 INFO L276 IsEmpty]: Start isEmpty. Operand 3120 states and 4868 transitions. [2022-01-10 18:31:31,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 18:31:31,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:31,586 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:31,586 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 18:31:31,586 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:31,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:31,587 INFO L85 PathProgramCache]: Analyzing trace with hash -1923855833, now seen corresponding path program 1 times [2022-01-10 18:31:31,587 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:31,587 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507039503] [2022-01-10 18:31:31,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:31,587 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:31,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:31,621 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 18:31:31,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507039503] [2022-01-10 18:31:31,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507039503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:31,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:31,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:31,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863212666] [2022-01-10 18:31:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:31,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:31,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:31,622 INFO L87 Difference]: Start difference. First operand 3120 states and 4868 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:31:31,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:31,828 INFO L93 Difference]: Finished difference Result 9236 states and 14402 transitions. [2022-01-10 18:31:31,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:31,828 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2022-01-10 18:31:31,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:31,844 INFO L225 Difference]: With dead ends: 9236 [2022-01-10 18:31:31,844 INFO L226 Difference]: Without dead ends: 6190 [2022-01-10 18:31:31,848 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 18:31:31,849 INFO L933 BasicCegarLoop]: 364 mSDtfsCounter, 171 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 171 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:31,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [171 Valid, 551 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:31,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6190 states. [2022-01-10 18:31:31,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6190 to 3128. [2022-01-10 18:31:31,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3128 states, 3127 states have (on average 1.5593220338983051) internal successors, (4876), 3127 states have internal predecessors, (4876), 0 states have call successors, (0), 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 18:31:31,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3128 states to 3128 states and 4876 transitions. [2022-01-10 18:31:31,962 INFO L78 Accepts]: Start accepts. Automaton has 3128 states and 4876 transitions. Word has length 64 [2022-01-10 18:31:31,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:31,962 INFO L470 AbstractCegarLoop]: Abstraction has 3128 states and 4876 transitions. [2022-01-10 18:31:31,962 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 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 18:31:31,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3128 states and 4876 transitions. [2022-01-10 18:31:31,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:31:31,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:31,964 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:31,964 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 18:31:31,964 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:31,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:31,964 INFO L85 PathProgramCache]: Analyzing trace with hash -2104597530, now seen corresponding path program 1 times [2022-01-10 18:31:31,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:31,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394453167] [2022-01-10 18:31:31,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:31,965 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:32,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:32,040 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 18:31:32,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:32,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394453167] [2022-01-10 18:31:32,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394453167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:32,040 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:32,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:32,040 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191545399] [2022-01-10 18:31:32,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:32,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:32,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:32,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:32,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:32,041 INFO L87 Difference]: Start difference. First operand 3128 states and 4876 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:32,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:32,224 INFO L93 Difference]: Finished difference Result 8836 states and 13880 transitions. [2022-01-10 18:31:32,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:32,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:31:32,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:32,238 INFO L225 Difference]: With dead ends: 8836 [2022-01-10 18:31:32,238 INFO L226 Difference]: Without dead ends: 6062 [2022-01-10 18:31:32,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:32,241 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 465 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 465 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:32,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [465 Valid, 387 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:32,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6062 states. [2022-01-10 18:31:32,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6062 to 6060. [2022-01-10 18:31:32,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6060 states, 6059 states have (on average 1.541178412279254) internal successors, (9338), 6059 states have internal predecessors, (9338), 0 states have call successors, (0), 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 18:31:32,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6060 states to 6060 states and 9338 transitions. [2022-01-10 18:31:32,453 INFO L78 Accepts]: Start accepts. Automaton has 6060 states and 9338 transitions. Word has length 65 [2022-01-10 18:31:32,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:32,453 INFO L470 AbstractCegarLoop]: Abstraction has 6060 states and 9338 transitions. [2022-01-10 18:31:32,453 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:32,453 INFO L276 IsEmpty]: Start isEmpty. Operand 6060 states and 9338 transitions. [2022-01-10 18:31:32,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:31:32,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:32,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:32,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 18:31:32,456 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash -1598213769, now seen corresponding path program 1 times [2022-01-10 18:31:32,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755964946] [2022-01-10 18:31:32,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:32,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:32,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:32,507 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 18:31:32,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:32,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755964946] [2022-01-10 18:31:32,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755964946] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:32,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:32,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:32,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067300277] [2022-01-10 18:31:32,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:32,508 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:32,508 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:32,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:32,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:32,508 INFO L87 Difference]: Start difference. First operand 6060 states and 9338 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:32,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:32,739 INFO L93 Difference]: Finished difference Result 11272 states and 17652 transitions. [2022-01-10 18:31:32,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:32,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:31:32,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:32,782 INFO L225 Difference]: With dead ends: 11272 [2022-01-10 18:31:32,783 INFO L226 Difference]: Without dead ends: 8374 [2022-01-10 18:31:32,785 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 18:31:32,786 INFO L933 BasicCegarLoop]: 276 mSDtfsCounter, 102 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 448 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 18:31:32,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 448 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8374 states. [2022-01-10 18:31:33,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8374 to 8372. [2022-01-10 18:31:33,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8372 states, 8371 states have (on average 1.5465296858200932) internal successors, (12946), 8371 states have internal predecessors, (12946), 0 states have call successors, (0), 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 18:31:33,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8372 states to 8372 states and 12946 transitions. [2022-01-10 18:31:33,139 INFO L78 Accepts]: Start accepts. Automaton has 8372 states and 12946 transitions. Word has length 65 [2022-01-10 18:31:33,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:33,140 INFO L470 AbstractCegarLoop]: Abstraction has 8372 states and 12946 transitions. [2022-01-10 18:31:33,140 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:33,140 INFO L276 IsEmpty]: Start isEmpty. Operand 8372 states and 12946 transitions. [2022-01-10 18:31:33,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 18:31:33,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:33,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:33,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 18:31:33,142 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:33,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:33,143 INFO L85 PathProgramCache]: Analyzing trace with hash 2124144957, now seen corresponding path program 1 times [2022-01-10 18:31:33,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:33,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806189852] [2022-01-10 18:31:33,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:33,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:33,231 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 18:31:33,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:33,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806189852] [2022-01-10 18:31:33,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806189852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:33,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:33,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:33,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870653767] [2022-01-10 18:31:33,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:33,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:33,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:33,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:33,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:33,233 INFO L87 Difference]: Start difference. First operand 8372 states and 12946 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:33,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:33,620 INFO L93 Difference]: Finished difference Result 22680 states and 35508 transitions. [2022-01-10 18:31:33,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:33,620 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2022-01-10 18:31:33,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:33,640 INFO L225 Difference]: With dead ends: 22680 [2022-01-10 18:31:33,641 INFO L226 Difference]: Without dead ends: 15094 [2022-01-10 18:31:33,649 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 18:31:33,649 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 97 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 375 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:33,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 375 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15094 states. [2022-01-10 18:31:34,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15094 to 14948. [2022-01-10 18:31:34,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14948 states, 14947 states have (on average 1.543721148056466) internal successors, (23074), 14947 states have internal predecessors, (23074), 0 states have call successors, (0), 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 18:31:34,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14948 states to 14948 states and 23074 transitions. [2022-01-10 18:31:34,223 INFO L78 Accepts]: Start accepts. Automaton has 14948 states and 23074 transitions. Word has length 65 [2022-01-10 18:31:34,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:34,224 INFO L470 AbstractCegarLoop]: Abstraction has 14948 states and 23074 transitions. [2022-01-10 18:31:34,224 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 0 states have call successors, (0), 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 18:31:34,224 INFO L276 IsEmpty]: Start isEmpty. Operand 14948 states and 23074 transitions. [2022-01-10 18:31:34,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-01-10 18:31:34,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:34,226 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:34,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 18:31:34,226 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:34,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:34,227 INFO L85 PathProgramCache]: Analyzing trace with hash 266647061, now seen corresponding path program 1 times [2022-01-10 18:31:34,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:34,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818494727] [2022-01-10 18:31:34,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:34,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:34,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:34,293 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 18:31:34,293 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818494727] [2022-01-10 18:31:34,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818494727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:34,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:34,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:34,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851571890] [2022-01-10 18:31:34,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:34,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:34,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:34,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:34,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:34,294 INFO L87 Difference]: Start difference. First operand 14948 states and 23074 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:31:35,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:35,155 INFO L93 Difference]: Finished difference Result 43272 states and 67042 transitions. [2022-01-10 18:31:35,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:35,156 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2022-01-10 18:31:35,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:35,205 INFO L225 Difference]: With dead ends: 43272 [2022-01-10 18:31:35,205 INFO L226 Difference]: Without dead ends: 29110 [2022-01-10 18:31:35,220 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:35,221 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 403 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:35,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 431 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29110 states. [2022-01-10 18:31:36,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29110 to 29108. [2022-01-10 18:31:36,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29108 states, 29107 states have (on average 1.5298038272580479) internal successors, (44528), 29107 states have internal predecessors, (44528), 0 states have call successors, (0), 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 18:31:36,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29108 states to 29108 states and 44528 transitions. [2022-01-10 18:31:36,409 INFO L78 Accepts]: Start accepts. Automaton has 29108 states and 44528 transitions. Word has length 67 [2022-01-10 18:31:36,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:36,409 INFO L470 AbstractCegarLoop]: Abstraction has 29108 states and 44528 transitions. [2022-01-10 18:31:36,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 0 states have call successors, (0), 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 18:31:36,410 INFO L276 IsEmpty]: Start isEmpty. Operand 29108 states and 44528 transitions. [2022-01-10 18:31:36,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-01-10 18:31:36,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:36,413 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:36,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 18:31:36,413 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:36,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:36,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1843062112, now seen corresponding path program 1 times [2022-01-10 18:31:36,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:36,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064405270] [2022-01-10 18:31:36,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:36,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:36,454 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 18:31:36,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:36,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064405270] [2022-01-10 18:31:36,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064405270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:36,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:36,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:36,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041276132] [2022-01-10 18:31:36,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:36,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:36,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:36,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:36,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:36,456 INFO L87 Difference]: Start difference. First operand 29108 states and 44528 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 18:31:38,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:38,153 INFO L93 Difference]: Finished difference Result 86472 states and 132362 transitions. [2022-01-10 18:31:38,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:38,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2022-01-10 18:31:38,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:38,256 INFO L225 Difference]: With dead ends: 86472 [2022-01-10 18:31:38,256 INFO L226 Difference]: Without dead ends: 57958 [2022-01-10 18:31:38,278 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 18:31:38,279 INFO L933 BasicCegarLoop]: 350 mSDtfsCounter, 157 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:38,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 537 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:38,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57958 states. [2022-01-10 18:31:39,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57958 to 29156. [2022-01-10 18:31:39,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29156 states, 29155 states have (on average 1.5289315726290515) internal successors, (44576), 29155 states have internal predecessors, (44576), 0 states have call successors, (0), 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 18:31:39,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29156 states to 29156 states and 44576 transitions. [2022-01-10 18:31:39,517 INFO L78 Accepts]: Start accepts. Automaton has 29156 states and 44576 transitions. Word has length 68 [2022-01-10 18:31:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:39,518 INFO L470 AbstractCegarLoop]: Abstraction has 29156 states and 44576 transitions. [2022-01-10 18:31:39,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 18:31:39,518 INFO L276 IsEmpty]: Start isEmpty. Operand 29156 states and 44576 transitions. [2022-01-10 18:31:39,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:31:39,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:39,527 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:39,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 18:31:39,527 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:39,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:39,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1124565455, now seen corresponding path program 1 times [2022-01-10 18:31:39,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876530326] [2022-01-10 18:31:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:39,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:39,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:39,578 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 18:31:39,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:39,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876530326] [2022-01-10 18:31:39,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876530326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:39,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:39,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 18:31:39,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475381477] [2022-01-10 18:31:39,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:39,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 18:31:39,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:39,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 18:31:39,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 18:31:39,581 INFO L87 Difference]: Start difference. First operand 29156 states and 44576 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:31:41,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:41,194 INFO L93 Difference]: Finished difference Result 54792 states and 84610 transitions. [2022-01-10 18:31:41,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 18:31:41,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:31:41,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:41,238 INFO L225 Difference]: With dead ends: 54792 [2022-01-10 18:31:41,238 INFO L226 Difference]: Without dead ends: 39926 [2022-01-10 18:31:41,250 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 18:31:41,251 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 96 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 435 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 18:31:41,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 435 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39926 states. [2022-01-10 18:31:42,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39926 to 39924. [2022-01-10 18:31:42,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39924 states, 39923 states have (on average 1.5273401297497684) internal successors, (60976), 39923 states have internal predecessors, (60976), 0 states have call successors, (0), 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 18:31:42,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39924 states to 39924 states and 60976 transitions. [2022-01-10 18:31:42,720 INFO L78 Accepts]: Start accepts. Automaton has 39924 states and 60976 transitions. Word has length 69 [2022-01-10 18:31:42,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:42,720 INFO L470 AbstractCegarLoop]: Abstraction has 39924 states and 60976 transitions. [2022-01-10 18:31:42,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:31:42,720 INFO L276 IsEmpty]: Start isEmpty. Operand 39924 states and 60976 transitions. [2022-01-10 18:31:42,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:31:42,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:42,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:42,723 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 18:31:42,724 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:42,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:42,724 INFO L85 PathProgramCache]: Analyzing trace with hash -849379585, now seen corresponding path program 1 times [2022-01-10 18:31:42,724 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:42,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660723810] [2022-01-10 18:31:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:42,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:42,779 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 18:31:42,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:42,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660723810] [2022-01-10 18:31:42,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660723810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:42,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:42,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:31:42,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380970363] [2022-01-10 18:31:42,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:42,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:31:42,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:42,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:31:42,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:31:42,780 INFO L87 Difference]: Start difference. First operand 39924 states and 60976 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:31:45,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:31:45,913 INFO L93 Difference]: Finished difference Result 117737 states and 179717 transitions. [2022-01-10 18:31:45,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 18:31:45,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:31:45,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:31:46,018 INFO L225 Difference]: With dead ends: 117737 [2022-01-10 18:31:46,018 INFO L226 Difference]: Without dead ends: 78113 [2022-01-10 18:31:46,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:46,049 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 370 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 370 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 18:31:46,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [370 Valid, 464 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 18:31:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78113 states. [2022-01-10 18:31:49,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78113 to 78111. [2022-01-10 18:31:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 78111 states, 78110 states have (on average 1.514517987453591) internal successors, (118299), 78110 states have internal predecessors, (118299), 0 states have call successors, (0), 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 18:31:49,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78111 states to 78111 states and 118299 transitions. [2022-01-10 18:31:49,256 INFO L78 Accepts]: Start accepts. Automaton has 78111 states and 118299 transitions. Word has length 69 [2022-01-10 18:31:49,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:31:49,258 INFO L470 AbstractCegarLoop]: Abstraction has 78111 states and 118299 transitions. [2022-01-10 18:31:49,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:31:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 78111 states and 118299 transitions. [2022-01-10 18:31:49,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-01-10 18:31:49,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:31:49,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:31:49,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 18:31:49,284 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:31:49,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:31:49,284 INFO L85 PathProgramCache]: Analyzing trace with hash -423700010, now seen corresponding path program 1 times [2022-01-10 18:31:49,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:31:49,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519307241] [2022-01-10 18:31:49,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:31:49,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:31:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:31:49,496 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 18:31:49,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:31:49,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519307241] [2022-01-10 18:31:49,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519307241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:31:49,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:31:49,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 18:31:49,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387103981] [2022-01-10 18:31:49,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:31:49,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 18:31:49,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:31:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 18:31:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 18:31:49,497 INFO L87 Difference]: Start difference. First operand 78111 states and 118299 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:32:18,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 18:32:18,054 INFO L93 Difference]: Finished difference Result 401067 states and 620193 transitions. [2022-01-10 18:32:18,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 18:32:18,055 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2022-01-10 18:32:18,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 18:32:18,895 INFO L225 Difference]: With dead ends: 401067 [2022-01-10 18:32:18,896 INFO L226 Difference]: Without dead ends: 326185 [2022-01-10 18:32:19,050 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 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 18:32:19,052 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 828 mSDsluCounter, 1057 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1256 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 18:32:19,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1256 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 18:32:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326185 states. [2022-01-10 18:32:34,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326185 to 148255. [2022-01-10 18:32:34,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148255 states, 148254 states have (on average 1.5093758009901925) internal successors, (223771), 148254 states have internal predecessors, (223771), 0 states have call successors, (0), 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 18:32:35,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148255 states to 148255 states and 223771 transitions. [2022-01-10 18:32:35,132 INFO L78 Accepts]: Start accepts. Automaton has 148255 states and 223771 transitions. Word has length 69 [2022-01-10 18:32:35,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 18:32:35,133 INFO L470 AbstractCegarLoop]: Abstraction has 148255 states and 223771 transitions. [2022-01-10 18:32:35,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 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 18:32:35,133 INFO L276 IsEmpty]: Start isEmpty. Operand 148255 states and 223771 transitions. [2022-01-10 18:32:35,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-01-10 18:32:35,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 18:32:35,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 18:32:35,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 18:32:35,152 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 18:32:35,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 18:32:35,153 INFO L85 PathProgramCache]: Analyzing trace with hash -279591620, now seen corresponding path program 1 times [2022-01-10 18:32:35,153 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 18:32:35,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152842256] [2022-01-10 18:32:35,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 18:32:35,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 18:32:35,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 18:32:35,289 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 18:32:35,289 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 18:32:35,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152842256] [2022-01-10 18:32:35,289 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152842256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 18:32:35,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 18:32:35,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 18:32:35,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111067507] [2022-01-10 18:32:35,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 18:32:35,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 18:32:35,290 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 18:32:35,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 18:32:35,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 18:32:35,290 INFO L87 Difference]: Start difference. First operand 148255 states and 223771 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)