/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:11:58,364 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:11:58,365 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:11:58,413 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 01:11:58,420 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:11:58,421 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:11:58,422 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:11:58,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:11:58,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:11:58,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:11:58,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:11:58,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:11:58,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:11:58,433 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:11:58,435 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:11:58,436 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:11:58,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 01:11:58,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 01:11:58,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 01:11:58,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 01:11:58,444 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 01:11:58,445 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-11 01:11:58,448 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:11:58,449 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:11:58,449 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:11:58,453 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 01:11:58,470 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:11:58,471 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:11:58,471 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:11:58,471 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:11:58,472 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:11:58,472 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:11:58,472 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:11:58,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:11:58,473 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:11:58,473 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:11:58,474 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:11:58,474 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:11:58,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:11:58,671 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:11:58,673 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:11:58,674 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:11:58,674 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:11:58,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-11 01:11:58,722 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c7dd41/80da6e1dba774497b8042bc22008b825/FLAG4b90b125b [2022-01-11 01:11:59,375 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:11:59,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-11 01:11:59,415 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c7dd41/80da6e1dba774497b8042bc22008b825/FLAG4b90b125b [2022-01-11 01:11:59,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e50c7dd41/80da6e1dba774497b8042bc22008b825 [2022-01-11 01:11:59,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:11:59,504 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:11:59,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:11:59,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:11:59,507 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:11:59,508 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:11:59" (1/1) ... [2022-01-11 01:11:59,509 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@401871df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:11:59, skipping insertion in model container [2022-01-11 01:11:59,509 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:11:59" (1/1) ... [2022-01-11 01:11:59,513 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:11:59,644 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:12:00,846 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-11 01:12:00,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-11 01:12:01,050 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:12:01,059 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:12:01,605 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-11 01:12:01,611 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-11 01:12:01,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:12:01,670 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:12:01,670 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01 WrapperNode [2022-01-11 01:12:01,670 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:12:01,671 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:12:01,671 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:12:01,671 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:12:01,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:01,736 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,025 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 57, calls inlined = 144, statements flattened = 14324 [2022-01-11 01:12:02,025 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:12:02,026 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:12:02,026 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:12:02,026 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:12:02,032 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,032 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,180 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,180 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,297 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,346 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,470 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:12:02,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:12:02,472 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:12:02,472 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:12:02,473 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (1/1) ... [2022-01-11 01:12:02,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:12:02,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:12:02,628 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 01:12:02,665 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 01:12:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:12:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:12:02,688 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:12:02,689 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:12:02,790 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:12:02,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:12:09,470 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:12:09,493 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:12:09,493 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 01:12:09,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:12:09 BoogieIcfgContainer [2022-01-11 01:12:09,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:12:09,497 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:12:09,497 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:12:09,498 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:12:09,500 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:12:09" (1/1) ... [2022-01-11 01:12:10,695 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:12:10 BasicIcfg [2022-01-11 01:12:10,695 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:12:10,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:12:10,697 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:12:10,699 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:12:10,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:11:59" (1/4) ... [2022-01-11 01:12:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a292fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:12:10, skipping insertion in model container [2022-01-11 01:12:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:12:01" (2/4) ... [2022-01-11 01:12:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a292fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:12:10, skipping insertion in model container [2022-01-11 01:12:10,700 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:12:09" (3/4) ... [2022-01-11 01:12:10,700 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45a292fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:12:10, skipping insertion in model container [2022-01-11 01:12:10,701 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:12:10" (4/4) ... [2022-01-11 01:12:10,701 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-1.cTransformedIcfg [2022-01-11 01:12:10,704 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:12:10,704 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 01:12:10,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:12:10,754 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 01:12:10,755 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 01:12:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:10,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:10,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:10,812 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:10,812 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:10,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:10,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1298378125, now seen corresponding path program 1 times [2022-01-11 01:12:10,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:10,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672066295] [2022-01-11 01:12:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:10,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:10,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:11,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:11,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:11,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672066295] [2022-01-11 01:12:11,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672066295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:11,074 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:11,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:11,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291511323] [2022-01-11 01:12:11,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:11,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:11,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:11,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:11,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,109 INFO L87 Difference]: Start difference. First operand has 3020 states, 3017 states have (on average 1.7742790851839576) internal successors, (5353), 3019 states have internal predecessors, (5353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:11,316 INFO L93 Difference]: Finished difference Result 6700 states and 11699 transitions. [2022-01-11 01:12:11,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:11,319 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:11,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:11,346 INFO L225 Difference]: With dead ends: 6700 [2022-01-11 01:12:11,346 INFO L226 Difference]: Without dead ends: 3624 [2022-01-11 01:12:11,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,361 INFO L933 BasicCegarLoop]: 5262 mSDtfsCounter, 5166 mSDsluCounter, 1074 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 6336 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:11,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 6336 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:11,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3624 states. [2022-01-11 01:12:11,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3624 to 3622. [2022-01-11 01:12:11,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7096685082872929) internal successors, (6189), 3621 states have internal predecessors, (6189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6189 transitions. [2022-01-11 01:12:11,503 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6189 transitions. Word has length 110 [2022-01-11 01:12:11,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:11,504 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6189 transitions. [2022-01-11 01:12:11,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,505 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6189 transitions. [2022-01-11 01:12:11,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:11,508 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:11,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:11,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:12:11,508 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:11,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:11,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1120812461, now seen corresponding path program 1 times [2022-01-11 01:12:11,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:11,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059712175] [2022-01-11 01:12:11,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:11,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:11,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:11,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:11,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:11,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059712175] [2022-01-11 01:12:11,607 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059712175] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:11,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:11,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:11,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534613411] [2022-01-11 01:12:11,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:11,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:11,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:11,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:11,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,609 INFO L87 Difference]: Start difference. First operand 3622 states and 6189 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:11,683 INFO L93 Difference]: Finished difference Result 5108 states and 8396 transitions. [2022-01-11 01:12:11,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:11,683 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:11,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:11,693 INFO L225 Difference]: With dead ends: 5108 [2022-01-11 01:12:11,694 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:11,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,699 INFO L933 BasicCegarLoop]: 5189 mSDtfsCounter, 5179 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5179 SdHoareTripleChecker+Valid, 5189 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:11,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5179 Valid, 5189 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:11,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:11,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7074585635359116) internal successors, (6181), 3621 states have internal predecessors, (6181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6181 transitions. [2022-01-11 01:12:11,765 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6181 transitions. Word has length 110 [2022-01-11 01:12:11,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:11,766 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6181 transitions. [2022-01-11 01:12:11,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6181 transitions. [2022-01-11 01:12:11,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:11,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:11,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:11,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:12:11,775 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:11,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:11,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1796505070, now seen corresponding path program 1 times [2022-01-11 01:12:11,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:11,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494931025] [2022-01-11 01:12:11,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:11,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:11,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:11,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:11,854 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:11,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494931025] [2022-01-11 01:12:11,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494931025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:11,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:11,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:11,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476837528] [2022-01-11 01:12:11,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:11,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:11,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:11,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:11,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,856 INFO L87 Difference]: Start difference. First operand 3622 states and 6181 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:11,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:11,923 INFO L93 Difference]: Finished difference Result 5107 states and 8379 transitions. [2022-01-11 01:12:11,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:11,924 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:11,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:11,935 INFO L225 Difference]: With dead ends: 5107 [2022-01-11 01:12:11,935 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:11,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:11,943 INFO L933 BasicCegarLoop]: 5184 mSDtfsCounter, 5173 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5173 SdHoareTripleChecker+Valid, 5184 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:11,943 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5173 Valid, 5184 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:11,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:12,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:12,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7052486187845304) internal successors, (6173), 3621 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6173 transitions. [2022-01-11 01:12:12,184 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6173 transitions. Word has length 110 [2022-01-11 01:12:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:12,184 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6173 transitions. [2022-01-11 01:12:12,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6173 transitions. [2022-01-11 01:12:12,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:12,186 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:12,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:12,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:12:12,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:12,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:12,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1680119310, now seen corresponding path program 1 times [2022-01-11 01:12:12,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:12,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876562930] [2022-01-11 01:12:12,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:12,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:12,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:12,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:12,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876562930] [2022-01-11 01:12:12,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876562930] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:12,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:12,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:12,243 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578414894] [2022-01-11 01:12:12,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:12,244 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:12,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:12,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:12,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,244 INFO L87 Difference]: Start difference. First operand 3622 states and 6173 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:12,311 INFO L93 Difference]: Finished difference Result 5105 states and 8360 transitions. [2022-01-11 01:12:12,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:12,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:12,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:12,322 INFO L225 Difference]: With dead ends: 5105 [2022-01-11 01:12:12,322 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:12,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,331 INFO L933 BasicCegarLoop]: 5179 mSDtfsCounter, 5166 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5166 SdHoareTripleChecker+Valid, 5179 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:12,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5166 Valid, 5179 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:12,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:12,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:12,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7030386740331491) internal successors, (6165), 3621 states have internal predecessors, (6165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6165 transitions. [2022-01-11 01:12:12,401 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6165 transitions. Word has length 110 [2022-01-11 01:12:12,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:12,402 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6165 transitions. [2022-01-11 01:12:12,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,402 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6165 transitions. [2022-01-11 01:12:12,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:12,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:12,403 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:12,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:12:12,403 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:12,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:12,404 INFO L85 PathProgramCache]: Analyzing trace with hash -1667484114, now seen corresponding path program 1 times [2022-01-11 01:12:12,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:12,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566094783] [2022-01-11 01:12:12,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:12,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:12,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:12,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:12,454 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:12,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566094783] [2022-01-11 01:12:12,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566094783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:12,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:12,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:12,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682499919] [2022-01-11 01:12:12,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:12,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:12,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:12,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:12,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,456 INFO L87 Difference]: Start difference. First operand 3622 states and 6165 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:12,526 INFO L93 Difference]: Finished difference Result 5104 states and 8343 transitions. [2022-01-11 01:12:12,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:12,526 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:12,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:12,537 INFO L225 Difference]: With dead ends: 5104 [2022-01-11 01:12:12,537 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:12,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,540 INFO L933 BasicCegarLoop]: 5174 mSDtfsCounter, 5160 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5160 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:12,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5160 Valid, 5174 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:12,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:12,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:12,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.7008287292817679) internal successors, (6157), 3621 states have internal predecessors, (6157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6157 transitions. [2022-01-11 01:12:12,627 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6157 transitions. Word has length 110 [2022-01-11 01:12:12,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:12,629 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6157 transitions. [2022-01-11 01:12:12,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,632 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6157 transitions. [2022-01-11 01:12:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:12,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:12,633 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:12,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:12:12,633 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:12,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:12,633 INFO L85 PathProgramCache]: Analyzing trace with hash 1688211982, now seen corresponding path program 1 times [2022-01-11 01:12:12,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:12,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735563938] [2022-01-11 01:12:12,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:12,634 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:12,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:12,675 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:12,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735563938] [2022-01-11 01:12:12,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735563938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:12,675 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:12,675 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:12,675 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024111063] [2022-01-11 01:12:12,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:12,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:12,676 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:12,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:12,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,677 INFO L87 Difference]: Start difference. First operand 3622 states and 6157 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:12,741 INFO L93 Difference]: Finished difference Result 5103 states and 8326 transitions. [2022-01-11 01:12:12,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:12,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:12,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:12,752 INFO L225 Difference]: With dead ends: 5103 [2022-01-11 01:12:12,753 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:12,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,757 INFO L933 BasicCegarLoop]: 5169 mSDtfsCounter, 5154 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5154 SdHoareTripleChecker+Valid, 5169 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:12,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5154 Valid, 5169 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:12,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:12,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:12,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6986187845303868) internal successors, (6149), 3621 states have internal predecessors, (6149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6149 transitions. [2022-01-11 01:12:12,838 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6149 transitions. Word has length 110 [2022-01-11 01:12:12,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:12,839 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6149 transitions. [2022-01-11 01:12:12,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,839 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6149 transitions. [2022-01-11 01:12:12,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:12,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:12,840 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:12,840 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:12:12,840 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:12,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:12,840 INFO L85 PathProgramCache]: Analyzing trace with hash 549534254, now seen corresponding path program 1 times [2022-01-11 01:12:12,841 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:12,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68187823] [2022-01-11 01:12:12,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:12,841 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:12,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:12,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:12,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:12,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68187823] [2022-01-11 01:12:12,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68187823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:12,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:12,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:12,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464699256] [2022-01-11 01:12:12,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:12,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:12,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:12,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:12,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,881 INFO L87 Difference]: Start difference. First operand 3622 states and 6149 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:12,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:12,984 INFO L93 Difference]: Finished difference Result 5101 states and 8307 transitions. [2022-01-11 01:12:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:12,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:12,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:12,995 INFO L225 Difference]: With dead ends: 5101 [2022-01-11 01:12:12,996 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:12,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:12,999 INFO L933 BasicCegarLoop]: 5144 mSDtfsCounter, 5055 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5055 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:12,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5055 Valid, 5222 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:13,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:13,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:13,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6914364640883979) internal successors, (6123), 3621 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6123 transitions. [2022-01-11 01:12:13,071 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6123 transitions. Word has length 110 [2022-01-11 01:12:13,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:13,072 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6123 transitions. [2022-01-11 01:12:13,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,072 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6123 transitions. [2022-01-11 01:12:13,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:13,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:13,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:13,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:12:13,073 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:13,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:13,073 INFO L85 PathProgramCache]: Analyzing trace with hash 108621773, now seen corresponding path program 1 times [2022-01-11 01:12:13,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:13,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462348869] [2022-01-11 01:12:13,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:13,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:13,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:13,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462348869] [2022-01-11 01:12:13,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462348869] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:13,107 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:13,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:13,108 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912878094] [2022-01-11 01:12:13,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:13,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:13,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:13,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:13,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,108 INFO L87 Difference]: Start difference. First operand 3622 states and 6123 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:13,186 INFO L93 Difference]: Finished difference Result 5100 states and 8254 transitions. [2022-01-11 01:12:13,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:13,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:13,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:13,200 INFO L225 Difference]: With dead ends: 5100 [2022-01-11 01:12:13,200 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:13,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,204 INFO L933 BasicCegarLoop]: 5129 mSDtfsCounter, 5040 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5040 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:13,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5040 Valid, 5206 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:13,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:13,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.684254143646409) internal successors, (6097), 3621 states have internal predecessors, (6097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6097 transitions. [2022-01-11 01:12:13,389 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6097 transitions. Word has length 110 [2022-01-11 01:12:13,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:13,389 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6097 transitions. [2022-01-11 01:12:13,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6097 transitions. [2022-01-11 01:12:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:13,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:13,390 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:13,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:12:13,391 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash -953709460, now seen corresponding path program 1 times [2022-01-11 01:12:13,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:13,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348851706] [2022-01-11 01:12:13,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:13,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:13,418 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:13,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348851706] [2022-01-11 01:12:13,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348851706] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:13,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:13,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:13,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721654217] [2022-01-11 01:12:13,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:13,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:13,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:13,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:13,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,419 INFO L87 Difference]: Start difference. First operand 3622 states and 6097 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:13,494 INFO L93 Difference]: Finished difference Result 5099 states and 8201 transitions. [2022-01-11 01:12:13,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:13,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:13,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:13,502 INFO L225 Difference]: With dead ends: 5099 [2022-01-11 01:12:13,502 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:13,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,506 INFO L933 BasicCegarLoop]: 5114 mSDtfsCounter, 5025 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5025 SdHoareTripleChecker+Valid, 5190 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:13,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5025 Valid, 5190 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:13,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:13,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:13,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.67707182320442) internal successors, (6071), 3621 states have internal predecessors, (6071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6071 transitions. [2022-01-11 01:12:13,577 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6071 transitions. Word has length 110 [2022-01-11 01:12:13,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:13,577 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6071 transitions. [2022-01-11 01:12:13,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,580 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6071 transitions. [2022-01-11 01:12:13,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:13,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:13,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:13,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 01:12:13,581 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:13,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:13,582 INFO L85 PathProgramCache]: Analyzing trace with hash -914206581, now seen corresponding path program 1 times [2022-01-11 01:12:13,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:13,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508809135] [2022-01-11 01:12:13,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:13,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:13,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:13,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:13,620 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:13,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508809135] [2022-01-11 01:12:13,620 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508809135] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:13,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:13,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:13,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002170972] [2022-01-11 01:12:13,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:13,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:13,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:13,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:13,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,622 INFO L87 Difference]: Start difference. First operand 3622 states and 6071 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:13,709 INFO L93 Difference]: Finished difference Result 5098 states and 8148 transitions. [2022-01-11 01:12:13,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:13,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:13,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:13,714 INFO L225 Difference]: With dead ends: 5098 [2022-01-11 01:12:13,714 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:13,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,717 INFO L933 BasicCegarLoop]: 5099 mSDtfsCounter, 5010 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5010 SdHoareTripleChecker+Valid, 5174 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:13,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5010 Valid, 5174 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:13,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:13,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:13,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.669889502762431) internal successors, (6045), 3621 states have internal predecessors, (6045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6045 transitions. [2022-01-11 01:12:13,781 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6045 transitions. Word has length 110 [2022-01-11 01:12:13,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:13,781 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6045 transitions. [2022-01-11 01:12:13,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6045 transitions. [2022-01-11 01:12:13,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:13,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:13,782 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:13,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:12:13,782 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:13,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:13,783 INFO L85 PathProgramCache]: Analyzing trace with hash 797821866, now seen corresponding path program 1 times [2022-01-11 01:12:13,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:13,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457879468] [2022-01-11 01:12:13,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:13,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:13,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:13,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:13,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:13,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457879468] [2022-01-11 01:12:13,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457879468] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:13,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:13,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:13,810 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550206711] [2022-01-11 01:12:13,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:13,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:13,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:13,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:13,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,811 INFO L87 Difference]: Start difference. First operand 3622 states and 6045 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:13,881 INFO L93 Difference]: Finished difference Result 5097 states and 8095 transitions. [2022-01-11 01:12:13,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:13,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:13,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:13,888 INFO L225 Difference]: With dead ends: 5097 [2022-01-11 01:12:13,888 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:13,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,891 INFO L933 BasicCegarLoop]: 5084 mSDtfsCounter, 4995 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4995 SdHoareTripleChecker+Valid, 5158 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:13,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4995 Valid, 5158 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:13,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:13,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.662707182320442) internal successors, (6019), 3621 states have internal predecessors, (6019), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 6019 transitions. [2022-01-11 01:12:13,949 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 6019 transitions. Word has length 110 [2022-01-11 01:12:13,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:13,950 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 6019 transitions. [2022-01-11 01:12:13,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:13,950 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 6019 transitions. [2022-01-11 01:12:13,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:13,951 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:13,951 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:13,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:12:13,951 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:13,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:13,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1564287415, now seen corresponding path program 1 times [2022-01-11 01:12:13,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:13,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412801227] [2022-01-11 01:12:13,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:13,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:13,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:13,989 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:13,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:13,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412801227] [2022-01-11 01:12:13,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412801227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:13,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:13,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:13,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12201086] [2022-01-11 01:12:13,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:13,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:13,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:13,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:13,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:13,991 INFO L87 Difference]: Start difference. First operand 3622 states and 6019 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:14,069 INFO L93 Difference]: Finished difference Result 5096 states and 8042 transitions. [2022-01-11 01:12:14,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:14,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:14,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:14,074 INFO L225 Difference]: With dead ends: 5096 [2022-01-11 01:12:14,074 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:14,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:14,076 INFO L933 BasicCegarLoop]: 5069 mSDtfsCounter, 4980 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4980 SdHoareTripleChecker+Valid, 5142 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:14,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4980 Valid, 5142 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:14,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:14,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.655524861878453) internal successors, (5993), 3621 states have internal predecessors, (5993), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5993 transitions. [2022-01-11 01:12:14,141 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5993 transitions. Word has length 110 [2022-01-11 01:12:14,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:14,141 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5993 transitions. [2022-01-11 01:12:14,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5993 transitions. [2022-01-11 01:12:14,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:14,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:14,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:14,142 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:12:14,142 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:14,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:14,143 INFO L85 PathProgramCache]: Analyzing trace with hash -2115012632, now seen corresponding path program 1 times [2022-01-11 01:12:14,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:14,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839642298] [2022-01-11 01:12:14,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:14,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:14,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:14,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:14,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:14,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839642298] [2022-01-11 01:12:14,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839642298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:14,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:14,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:14,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392752523] [2022-01-11 01:12:14,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:14,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:14,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:14,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:14,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:14,169 INFO L87 Difference]: Start difference. First operand 3622 states and 5993 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:14,246 INFO L93 Difference]: Finished difference Result 5095 states and 7989 transitions. [2022-01-11 01:12:14,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:14,247 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:14,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:14,252 INFO L225 Difference]: With dead ends: 5095 [2022-01-11 01:12:14,252 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:14,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:14,255 INFO L933 BasicCegarLoop]: 5054 mSDtfsCounter, 4965 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4965 SdHoareTripleChecker+Valid, 5126 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:14,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4965 Valid, 5126 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:14,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:14,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.648342541436464) internal successors, (5967), 3621 states have internal predecessors, (5967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5967 transitions. [2022-01-11 01:12:14,324 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5967 transitions. Word has length 110 [2022-01-11 01:12:14,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:14,325 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5967 transitions. [2022-01-11 01:12:14,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,325 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5967 transitions. [2022-01-11 01:12:14,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:14,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:14,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:14,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:12:14,326 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:14,326 INFO L85 PathProgramCache]: Analyzing trace with hash -178874105, now seen corresponding path program 1 times [2022-01-11 01:12:14,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:14,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1772037291] [2022-01-11 01:12:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:14,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:14,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:14,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:14,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1772037291] [2022-01-11 01:12:14,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1772037291] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:14,352 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:14,352 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:14,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209634403] [2022-01-11 01:12:14,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:14,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:14,353 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:14,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:14,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:14,353 INFO L87 Difference]: Start difference. First operand 3622 states and 5967 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:14,434 INFO L93 Difference]: Finished difference Result 5094 states and 7936 transitions. [2022-01-11 01:12:14,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:14,434 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:14,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:14,440 INFO L225 Difference]: With dead ends: 5094 [2022-01-11 01:12:14,440 INFO L226 Difference]: Without dead ends: 3622 [2022-01-11 01:12:14,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:14,443 INFO L933 BasicCegarLoop]: 5039 mSDtfsCounter, 4950 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4950 SdHoareTripleChecker+Valid, 5110 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:14,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4950 Valid, 5110 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:14,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2022-01-11 01:12:14,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 3622. [2022-01-11 01:12:14,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 3620 states have (on average 1.6411602209944751) internal successors, (5941), 3621 states have internal predecessors, (5941), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 5941 transitions. [2022-01-11 01:12:14,535 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 5941 transitions. Word has length 110 [2022-01-11 01:12:14,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:14,535 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 5941 transitions. [2022-01-11 01:12:14,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,535 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 5941 transitions. [2022-01-11 01:12:14,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:14,536 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:14,536 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:14,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:12:14,536 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:14,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:14,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1282928346, now seen corresponding path program 1 times [2022-01-11 01:12:14,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:14,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721918286] [2022-01-11 01:12:14,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:14,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:14,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:14,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:14,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:14,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721918286] [2022-01-11 01:12:14,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721918286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:14,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:14,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:12:14,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601764751] [2022-01-11 01:12:14,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:14,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:12:14,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:14,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:12:14,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:12:14,588 INFO L87 Difference]: Start difference. First operand 3622 states and 5941 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:14,830 INFO L93 Difference]: Finished difference Result 5776 states and 8827 transitions. [2022-01-11 01:12:14,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:12:14,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:14,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:14,837 INFO L225 Difference]: With dead ends: 5776 [2022-01-11 01:12:14,837 INFO L226 Difference]: Without dead ends: 4318 [2022-01-11 01:12:14,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:12:14,840 INFO L933 BasicCegarLoop]: 5128 mSDtfsCounter, 2950 mSDsluCounter, 13365 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2950 SdHoareTripleChecker+Valid, 18493 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:14,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2950 Valid, 18493 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:12:14,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4318 states. [2022-01-11 01:12:14,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4318 to 3628. [2022-01-11 01:12:14,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3628 states, 3626 states have (on average 1.635135135135135) internal successors, (5929), 3627 states have internal predecessors, (5929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3628 states to 3628 states and 5929 transitions. [2022-01-11 01:12:14,943 INFO L78 Accepts]: Start accepts. Automaton has 3628 states and 5929 transitions. Word has length 110 [2022-01-11 01:12:14,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:14,943 INFO L470 AbstractCegarLoop]: Abstraction has 3628 states and 5929 transitions. [2022-01-11 01:12:14,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:14,944 INFO L276 IsEmpty]: Start isEmpty. Operand 3628 states and 5929 transitions. [2022-01-11 01:12:14,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:14,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:14,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:14,945 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:12:14,945 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:14,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:14,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1529241433, now seen corresponding path program 1 times [2022-01-11 01:12:14,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:14,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178861805] [2022-01-11 01:12:14,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:14,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:14,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:14,985 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:14,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178861805] [2022-01-11 01:12:14,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178861805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:14,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:14,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:12:14,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976652506] [2022-01-11 01:12:14,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:14,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:12:14,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:14,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:12:14,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:12:14,986 INFO L87 Difference]: Start difference. First operand 3628 states and 5929 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:15,244 INFO L93 Difference]: Finished difference Result 6245 states and 9385 transitions. [2022-01-11 01:12:15,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:12:15,244 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:15,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:15,252 INFO L225 Difference]: With dead ends: 6245 [2022-01-11 01:12:15,253 INFO L226 Difference]: Without dead ends: 4816 [2022-01-11 01:12:15,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:12:15,257 INFO L933 BasicCegarLoop]: 5026 mSDtfsCounter, 2342 mSDsluCounter, 14517 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2342 SdHoareTripleChecker+Valid, 19543 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:15,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2342 Valid, 19543 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:12:15,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4816 states. [2022-01-11 01:12:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4816 to 3634. [2022-01-11 01:12:15,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 3632 states have (on average 1.6291299559471366) internal successors, (5917), 3633 states have internal predecessors, (5917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5917 transitions. [2022-01-11 01:12:15,379 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5917 transitions. Word has length 110 [2022-01-11 01:12:15,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:15,379 INFO L470 AbstractCegarLoop]: Abstraction has 3634 states and 5917 transitions. [2022-01-11 01:12:15,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5917 transitions. [2022-01-11 01:12:15,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:15,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:15,380 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:15,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:12:15,380 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:15,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:15,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1843042280, now seen corresponding path program 1 times [2022-01-11 01:12:15,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:15,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12706330] [2022-01-11 01:12:15,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:15,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:15,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:15,422 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:15,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12706330] [2022-01-11 01:12:15,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12706330] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:15,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:15,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:12:15,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344556026] [2022-01-11 01:12:15,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:15,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:12:15,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:15,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:12:15,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:12:15,423 INFO L87 Difference]: Start difference. First operand 3634 states and 5917 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:15,663 INFO L93 Difference]: Finished difference Result 6354 states and 9471 transitions. [2022-01-11 01:12:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:12:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:15,671 INFO L225 Difference]: With dead ends: 6354 [2022-01-11 01:12:15,671 INFO L226 Difference]: Without dead ends: 4926 [2022-01-11 01:12:15,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:12:15,674 INFO L933 BasicCegarLoop]: 4998 mSDtfsCounter, 2206 mSDsluCounter, 14726 mSDsCounter, 0 mSdLazyCounter, 83 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2206 SdHoareTripleChecker+Valid, 19724 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 83 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:15,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2206 Valid, 19724 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 83 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 01:12:15,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4926 states. [2022-01-11 01:12:15,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4926 to 3640. [2022-01-11 01:12:15,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6231445849367785) internal successors, (5905), 3639 states have internal predecessors, (5905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5905 transitions. [2022-01-11 01:12:15,808 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5905 transitions. Word has length 110 [2022-01-11 01:12:15,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:15,809 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5905 transitions. [2022-01-11 01:12:15,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 5 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5905 transitions. [2022-01-11 01:12:15,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:15,809 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:15,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:15,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:12:15,810 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:15,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:15,810 INFO L85 PathProgramCache]: Analyzing trace with hash -340634647, now seen corresponding path program 1 times [2022-01-11 01:12:15,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:15,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381227111] [2022-01-11 01:12:15,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:15,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:15,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:15,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:15,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381227111] [2022-01-11 01:12:15,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381227111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:15,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:15,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:15,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425921500] [2022-01-11 01:12:15,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:15,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:15,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:15,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:15,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:15,845 INFO L87 Difference]: Start difference. First operand 3640 states and 5905 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:15,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:15,941 INFO L93 Difference]: Finished difference Result 5142 states and 7826 transitions. [2022-01-11 01:12:15,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:15,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:15,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:15,948 INFO L225 Difference]: With dead ends: 5142 [2022-01-11 01:12:15,948 INFO L226 Difference]: Without dead ends: 3640 [2022-01-11 01:12:15,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:15,951 INFO L933 BasicCegarLoop]: 5014 mSDtfsCounter, 4937 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4937 SdHoareTripleChecker+Valid, 5014 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:15,951 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4937 Valid, 5014 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:15,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-11 01:12:16,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-11 01:12:16,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.620945574491479) internal successors, (5897), 3639 states have internal predecessors, (5897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5897 transitions. [2022-01-11 01:12:16,052 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5897 transitions. Word has length 110 [2022-01-11 01:12:16,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:16,052 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5897 transitions. [2022-01-11 01:12:16,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5897 transitions. [2022-01-11 01:12:16,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:16,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:16,053 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:16,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:12:16,053 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:16,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:16,054 INFO L85 PathProgramCache]: Analyzing trace with hash -595371192, now seen corresponding path program 1 times [2022-01-11 01:12:16,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:16,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918707599] [2022-01-11 01:12:16,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:16,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:16,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:16,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:16,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:16,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918707599] [2022-01-11 01:12:16,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918707599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:16,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:16,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:16,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549671199] [2022-01-11 01:12:16,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:16,088 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:16,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:16,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:16,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:16,089 INFO L87 Difference]: Start difference. First operand 3640 states and 5897 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:16,186 INFO L93 Difference]: Finished difference Result 5138 states and 7806 transitions. [2022-01-11 01:12:16,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:16,186 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:16,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:16,192 INFO L225 Difference]: With dead ends: 5138 [2022-01-11 01:12:16,192 INFO L226 Difference]: Without dead ends: 3640 [2022-01-11 01:12:16,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:16,196 INFO L933 BasicCegarLoop]: 5009 mSDtfsCounter, 4928 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4928 SdHoareTripleChecker+Valid, 5009 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:16,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4928 Valid, 5009 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:16,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3640 states. [2022-01-11 01:12:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3640 to 3640. [2022-01-11 01:12:16,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3640 states, 3638 states have (on average 1.6187465640461791) internal successors, (5889), 3639 states have internal predecessors, (5889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3640 states to 3640 states and 5889 transitions. [2022-01-11 01:12:16,329 INFO L78 Accepts]: Start accepts. Automaton has 3640 states and 5889 transitions. Word has length 110 [2022-01-11 01:12:16,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:16,329 INFO L470 AbstractCegarLoop]: Abstraction has 3640 states and 5889 transitions. [2022-01-11 01:12:16,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,329 INFO L276 IsEmpty]: Start isEmpty. Operand 3640 states and 5889 transitions. [2022-01-11 01:12:16,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-01-11 01:12:16,330 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:16,330 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:16,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:12:16,330 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:16,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:16,331 INFO L85 PathProgramCache]: Analyzing trace with hash -662377945, now seen corresponding path program 1 times [2022-01-11 01:12:16,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:16,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103466106] [2022-01-11 01:12:16,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:16,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:16,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:16,366 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:16,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103466106] [2022-01-11 01:12:16,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103466106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:16,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:16,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:12:16,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184737990] [2022-01-11 01:12:16,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:16,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:16,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:16,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:16,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:16,367 INFO L87 Difference]: Start difference. First operand 3640 states and 5889 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:16,554 INFO L93 Difference]: Finished difference Result 6516 states and 9554 transitions. [2022-01-11 01:12:16,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:16,554 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2022-01-11 01:12:16,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:16,562 INFO L225 Difference]: With dead ends: 6516 [2022-01-11 01:12:16,562 INFO L226 Difference]: Without dead ends: 5028 [2022-01-11 01:12:16,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:16,566 INFO L933 BasicCegarLoop]: 5000 mSDtfsCounter, 4877 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 5907 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:16,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4877 Valid, 5907 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:16,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5028 states. [2022-01-11 01:12:16,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5028 to 4912. [2022-01-11 01:12:16,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4912 states, 4910 states have (on average 1.5268839103869654) internal successors, (7497), 4911 states have internal predecessors, (7497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4912 states to 4912 states and 7497 transitions. [2022-01-11 01:12:16,744 INFO L78 Accepts]: Start accepts. Automaton has 4912 states and 7497 transitions. Word has length 110 [2022-01-11 01:12:16,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:16,744 INFO L470 AbstractCegarLoop]: Abstraction has 4912 states and 7497 transitions. [2022-01-11 01:12:16,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:16,744 INFO L276 IsEmpty]: Start isEmpty. Operand 4912 states and 7497 transitions. [2022-01-11 01:12:16,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 01:12:16,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:16,747 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:16,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:12:16,747 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:16,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:16,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1294335533, now seen corresponding path program 1 times [2022-01-11 01:12:16,747 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:16,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593634061] [2022-01-11 01:12:16,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:16,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:16,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:16,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:16,788 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:16,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593634061] [2022-01-11 01:12:16,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593634061] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:16,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:16,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:16,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420211643] [2022-01-11 01:12:16,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:16,789 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:16,789 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:16,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:16,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:16,790 INFO L87 Difference]: Start difference. First operand 4912 states and 7497 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:17,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:17,096 INFO L93 Difference]: Finished difference Result 10274 states and 14311 transitions. [2022-01-11 01:12:17,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:17,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 01:12:17,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:17,109 INFO L225 Difference]: With dead ends: 10274 [2022-01-11 01:12:17,109 INFO L226 Difference]: Without dead ends: 7520 [2022-01-11 01:12:17,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:17,116 INFO L933 BasicCegarLoop]: 4997 mSDtfsCounter, 4895 mSDsluCounter, 907 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4895 SdHoareTripleChecker+Valid, 5904 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:17,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4895 Valid, 5904 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:17,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7520 states. [2022-01-11 01:12:17,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7520 to 7318. [2022-01-11 01:12:17,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7318 states, 7316 states have (on average 1.4402679059595407) internal successors, (10537), 7317 states have internal predecessors, (10537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:17,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7318 states to 7318 states and 10537 transitions. [2022-01-11 01:12:17,440 INFO L78 Accepts]: Start accepts. Automaton has 7318 states and 10537 transitions. Word has length 178 [2022-01-11 01:12:17,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:17,440 INFO L470 AbstractCegarLoop]: Abstraction has 7318 states and 10537 transitions. [2022-01-11 01:12:17,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:17,440 INFO L276 IsEmpty]: Start isEmpty. Operand 7318 states and 10537 transitions. [2022-01-11 01:12:17,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 01:12:17,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:17,444 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:17,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:12:17,444 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:17,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:17,445 INFO L85 PathProgramCache]: Analyzing trace with hash 2045259373, now seen corresponding path program 1 times [2022-01-11 01:12:17,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:17,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297338493] [2022-01-11 01:12:17,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:17,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:17,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:17,494 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:17,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:17,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297338493] [2022-01-11 01:12:17,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297338493] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:17,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:17,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:17,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130290942] [2022-01-11 01:12:17,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:17,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:17,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:17,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:17,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:17,496 INFO L87 Difference]: Start difference. First operand 7318 states and 10537 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:18,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:18,051 INFO L93 Difference]: Finished difference Result 17195 states and 22939 transitions. [2022-01-11 01:12:18,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:18,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 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 178 [2022-01-11 01:12:18,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:18,069 INFO L225 Difference]: With dead ends: 17195 [2022-01-11 01:12:18,070 INFO L226 Difference]: Without dead ends: 12099 [2022-01-11 01:12:18,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:18,078 INFO L933 BasicCegarLoop]: 5526 mSDtfsCounter, 4734 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4734 SdHoareTripleChecker+Valid, 6558 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:18,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4734 Valid, 6558 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:18,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12099 states. [2022-01-11 01:12:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12099 to 12097. [2022-01-11 01:12:18,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12097 states, 12095 states have (on average 1.3598181066556427) internal successors, (16447), 12096 states have internal predecessors, (16447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:18,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12097 states to 12097 states and 16447 transitions. [2022-01-11 01:12:18,598 INFO L78 Accepts]: Start accepts. Automaton has 12097 states and 16447 transitions. Word has length 178 [2022-01-11 01:12:18,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:18,598 INFO L470 AbstractCegarLoop]: Abstraction has 12097 states and 16447 transitions. [2022-01-11 01:12:18,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:18,598 INFO L276 IsEmpty]: Start isEmpty. Operand 12097 states and 16447 transitions. [2022-01-11 01:12:18,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-01-11 01:12:18,603 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:18,603 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:18,603 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:12:18,603 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:18,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1361029068, now seen corresponding path program 1 times [2022-01-11 01:12:18,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:18,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887356357] [2022-01-11 01:12:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:18,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:18,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:18,628 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:12:18,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:18,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887356357] [2022-01-11 01:12:18,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887356357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:18,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:18,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:18,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320732852] [2022-01-11 01:12:18,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:18,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:18,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:18,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:18,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:18,629 INFO L87 Difference]: Start difference. First operand 12097 states and 16447 transitions. Second operand has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:19,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:19,164 INFO L93 Difference]: Finished difference Result 21877 states and 28704 transitions. [2022-01-11 01:12:19,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:19,164 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2022-01-11 01:12:19,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:19,182 INFO L225 Difference]: With dead ends: 21877 [2022-01-11 01:12:19,183 INFO L226 Difference]: Without dead ends: 12002 [2022-01-11 01:12:19,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:19,194 INFO L933 BasicCegarLoop]: 5008 mSDtfsCounter, 1046 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 8966 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:19,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1046 Valid, 8966 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:19,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12002 states. [2022-01-11 01:12:19,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12002 to 12002. [2022-01-11 01:12:19,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12002 states, 12000 states have (on average 1.3611666666666666) internal successors, (16334), 12001 states have internal predecessors, (16334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:19,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12002 states to 12002 states and 16334 transitions. [2022-01-11 01:12:19,751 INFO L78 Accepts]: Start accepts. Automaton has 12002 states and 16334 transitions. Word has length 178 [2022-01-11 01:12:19,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:19,751 INFO L470 AbstractCegarLoop]: Abstraction has 12002 states and 16334 transitions. [2022-01-11 01:12:19,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.666666666666664) internal successors, (170), 3 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:19,751 INFO L276 IsEmpty]: Start isEmpty. Operand 12002 states and 16334 transitions. [2022-01-11 01:12:19,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-11 01:12:19,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:19,756 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:19,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:12:19,756 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:19,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:19,757 INFO L85 PathProgramCache]: Analyzing trace with hash -788170566, now seen corresponding path program 1 times [2022-01-11 01:12:19,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:19,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444334982] [2022-01-11 01:12:19,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:19,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:19,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:19,796 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:19,796 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:19,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444334982] [2022-01-11 01:12:19,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444334982] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:19,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:19,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:19,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919258470] [2022-01-11 01:12:19,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:19,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:19,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:19,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:19,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:19,797 INFO L87 Difference]: Start difference. First operand 12002 states and 16334 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:20,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:20,914 INFO L93 Difference]: Finished difference Result 31152 states and 40222 transitions. [2022-01-11 01:12:20,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:20,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 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 179 [2022-01-11 01:12:20,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:20,945 INFO L225 Difference]: With dead ends: 31152 [2022-01-11 01:12:20,946 INFO L226 Difference]: Without dead ends: 21372 [2022-01-11 01:12:20,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:20,961 INFO L933 BasicCegarLoop]: 5240 mSDtfsCounter, 4893 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6260 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:20,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6260 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:20,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21372 states. [2022-01-11 01:12:22,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21372 to 20746. [2022-01-11 01:12:22,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20746 states, 20744 states have (on average 1.309101426918627) internal successors, (27156), 20745 states have internal predecessors, (27156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:22,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20746 states to 20746 states and 27156 transitions. [2022-01-11 01:12:22,168 INFO L78 Accepts]: Start accepts. Automaton has 20746 states and 27156 transitions. Word has length 179 [2022-01-11 01:12:22,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:22,168 INFO L470 AbstractCegarLoop]: Abstraction has 20746 states and 27156 transitions. [2022-01-11 01:12:22,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 20746 states and 27156 transitions. [2022-01-11 01:12:22,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-11 01:12:22,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:22,177 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:22,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:12:22,177 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:22,178 INFO L85 PathProgramCache]: Analyzing trace with hash -889981673, now seen corresponding path program 1 times [2022-01-11 01:12:22,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:22,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191266943] [2022-01-11 01:12:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:22,178 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:22,204 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:12:22,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:22,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191266943] [2022-01-11 01:12:22,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191266943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:22,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:22,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:22,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56449068] [2022-01-11 01:12:22,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:22,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:22,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:22,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:22,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:22,205 INFO L87 Difference]: Start difference. First operand 20746 states and 27156 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:23,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:23,189 INFO L93 Difference]: Finished difference Result 39229 states and 50186 transitions. [2022-01-11 01:12:23,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:23,189 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 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 179 [2022-01-11 01:12:23,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:23,215 INFO L225 Difference]: With dead ends: 39229 [2022-01-11 01:12:23,216 INFO L226 Difference]: Without dead ends: 20652 [2022-01-11 01:12:23,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:23,230 INFO L933 BasicCegarLoop]: 5007 mSDtfsCounter, 1044 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 8965 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:23,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 8965 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:23,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20652 states. [2022-01-11 01:12:24,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20652 to 20652. [2022-01-11 01:12:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20652 states, 20650 states have (on average 1.309685230024213) internal successors, (27045), 20651 states have internal predecessors, (27045), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:24,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20652 states to 20652 states and 27045 transitions. [2022-01-11 01:12:24,209 INFO L78 Accepts]: Start accepts. Automaton has 20652 states and 27045 transitions. Word has length 179 [2022-01-11 01:12:24,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:24,209 INFO L470 AbstractCegarLoop]: Abstraction has 20652 states and 27045 transitions. [2022-01-11 01:12:24,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 20652 states and 27045 transitions. [2022-01-11 01:12:24,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 01:12:24,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:24,217 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:24,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:12:24,217 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:24,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:24,217 INFO L85 PathProgramCache]: Analyzing trace with hash 546157628, now seen corresponding path program 1 times [2022-01-11 01:12:24,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:24,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826256604] [2022-01-11 01:12:24,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:24,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:24,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:24,275 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:24,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:24,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826256604] [2022-01-11 01:12:24,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826256604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:24,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:24,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:24,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707823281] [2022-01-11 01:12:24,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:24,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:24,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:24,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:24,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:24,277 INFO L87 Difference]: Start difference. First operand 20652 states and 27045 transitions. Second operand has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:26,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:26,149 INFO L93 Difference]: Finished difference Result 56517 states and 71619 transitions. [2022-01-11 01:12:26,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:26,149 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 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 180 [2022-01-11 01:12:26,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:26,194 INFO L225 Difference]: With dead ends: 56517 [2022-01-11 01:12:26,194 INFO L226 Difference]: Without dead ends: 38087 [2022-01-11 01:12:26,211 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:26,212 INFO L933 BasicCegarLoop]: 5287 mSDtfsCounter, 4893 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6305 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:26,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6305 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:26,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38087 states. [2022-01-11 01:12:28,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38087 to 37061. [2022-01-11 01:12:28,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37061 states, 37059 states have (on average 1.2775574084567851) internal successors, (47345), 37060 states have internal predecessors, (47345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:28,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37061 states to 37061 states and 47345 transitions. [2022-01-11 01:12:28,202 INFO L78 Accepts]: Start accepts. Automaton has 37061 states and 47345 transitions. Word has length 180 [2022-01-11 01:12:28,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:28,203 INFO L470 AbstractCegarLoop]: Abstraction has 37061 states and 47345 transitions. [2022-01-11 01:12:28,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.0) internal successors, (180), 3 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:28,203 INFO L276 IsEmpty]: Start isEmpty. Operand 37061 states and 47345 transitions. [2022-01-11 01:12:28,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2022-01-11 01:12:28,216 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:28,216 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:28,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:12:28,216 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:28,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:28,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1784398813, now seen corresponding path program 1 times [2022-01-11 01:12:28,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:28,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946647515] [2022-01-11 01:12:28,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:28,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:28,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:28,243 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:12:28,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:28,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946647515] [2022-01-11 01:12:28,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946647515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:28,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:28,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:28,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1634606591] [2022-01-11 01:12:28,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:28,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:28,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:28,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:28,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:28,246 INFO L87 Difference]: Start difference. First operand 37061 states and 47345 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:30,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:30,567 INFO L93 Difference]: Finished difference Result 71853 states and 90558 transitions. [2022-01-11 01:12:30,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:30,568 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 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 180 [2022-01-11 01:12:30,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:30,626 INFO L225 Difference]: With dead ends: 71853 [2022-01-11 01:12:30,626 INFO L226 Difference]: Without dead ends: 36968 [2022-01-11 01:12:30,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:30,657 INFO L933 BasicCegarLoop]: 5006 mSDtfsCounter, 1042 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1042 SdHoareTripleChecker+Valid, 8964 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:30,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1042 Valid, 8964 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:30,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36968 states. [2022-01-11 01:12:32,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36968 to 36968. [2022-01-11 01:12:32,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36968 states, 36966 states have (on average 1.2778228642536384) internal successors, (47236), 36967 states have internal predecessors, (47236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:32,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36968 states to 36968 states and 47236 transitions. [2022-01-11 01:12:32,733 INFO L78 Accepts]: Start accepts. Automaton has 36968 states and 47236 transitions. Word has length 180 [2022-01-11 01:12:32,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:32,733 INFO L470 AbstractCegarLoop]: Abstraction has 36968 states and 47236 transitions. [2022-01-11 01:12:32,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:32,733 INFO L276 IsEmpty]: Start isEmpty. Operand 36968 states and 47236 transitions. [2022-01-11 01:12:32,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 01:12:32,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:32,744 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:32,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:12:32,744 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:32,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:32,745 INFO L85 PathProgramCache]: Analyzing trace with hash -1584495378, now seen corresponding path program 1 times [2022-01-11 01:12:32,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:32,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536790760] [2022-01-11 01:12:32,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:32,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:32,782 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:32,782 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:32,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536790760] [2022-01-11 01:12:32,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536790760] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:32,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:32,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:32,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366521006] [2022-01-11 01:12:32,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:32,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:32,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:32,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:32,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:32,784 INFO L87 Difference]: Start difference. First operand 36968 states and 47236 transitions. Second operand has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:36,724 INFO L93 Difference]: Finished difference Result 104048 states and 130384 transitions. [2022-01-11 01:12:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:36,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-01-11 01:12:36,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:36,826 INFO L225 Difference]: With dead ends: 104048 [2022-01-11 01:12:36,826 INFO L226 Difference]: Without dead ends: 69302 [2022-01-11 01:12:36,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:36,860 INFO L933 BasicCegarLoop]: 5271 mSDtfsCounter, 4893 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6287 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:36,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6287 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:36,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69302 states. [2022-01-11 01:12:40,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69302 to 67700. [2022-01-11 01:12:40,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67700 states, 67698 states have (on average 1.2587373334515053) internal successors, (85214), 67699 states have internal predecessors, (85214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:40,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67700 states to 67700 states and 85214 transitions. [2022-01-11 01:12:40,921 INFO L78 Accepts]: Start accepts. Automaton has 67700 states and 85214 transitions. Word has length 181 [2022-01-11 01:12:40,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:40,921 INFO L470 AbstractCegarLoop]: Abstraction has 67700 states and 85214 transitions. [2022-01-11 01:12:40,922 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 60.333333333333336) internal successors, (181), 3 states have internal predecessors, (181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:40,922 INFO L276 IsEmpty]: Start isEmpty. Operand 67700 states and 85214 transitions. [2022-01-11 01:12:40,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2022-01-11 01:12:40,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:40,944 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:40,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:12:40,945 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:40,945 INFO L85 PathProgramCache]: Analyzing trace with hash 2123826891, now seen corresponding path program 1 times [2022-01-11 01:12:40,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:40,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844061482] [2022-01-11 01:12:40,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:40,945 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 01:12:40,971 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:40,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844061482] [2022-01-11 01:12:40,971 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844061482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:40,971 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:40,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:40,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773769020] [2022-01-11 01:12:40,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:40,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:40,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:40,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:40,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:40,972 INFO L87 Difference]: Start difference. First operand 67700 states and 85214 transitions. Second operand has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:45,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:45,171 INFO L93 Difference]: Finished difference Result 133125 states and 166290 transitions. [2022-01-11 01:12:45,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:45,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 181 [2022-01-11 01:12:45,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:45,360 INFO L225 Difference]: With dead ends: 133125 [2022-01-11 01:12:45,361 INFO L226 Difference]: Without dead ends: 67608 [2022-01-11 01:12:45,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:45,412 INFO L933 BasicCegarLoop]: 5005 mSDtfsCounter, 1040 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 8963 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:45,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1040 Valid, 8963 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67608 states. [2022-01-11 01:12:49,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67608 to 67608. [2022-01-11 01:12:49,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67608 states, 67606 states have (on average 1.258867556134071) internal successors, (85107), 67607 states have internal predecessors, (85107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67608 states to 67608 states and 85107 transitions. [2022-01-11 01:12:49,642 INFO L78 Accepts]: Start accepts. Automaton has 67608 states and 85107 transitions. Word has length 181 [2022-01-11 01:12:49,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:12:49,642 INFO L470 AbstractCegarLoop]: Abstraction has 67608 states and 85107 transitions. [2022-01-11 01:12:49,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.666666666666664) internal successors, (173), 3 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 67608 states and 85107 transitions. [2022-01-11 01:12:49,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-11 01:12:49,662 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:12:49,663 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:12:49,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:12:49,663 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:12:49,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:12:49,663 INFO L85 PathProgramCache]: Analyzing trace with hash -179773432, now seen corresponding path program 1 times [2022-01-11 01:12:49,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:12:49,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2113148585] [2022-01-11 01:12:49,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:12:49,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:12:49,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:12:49,703 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:12:49,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:12:49,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2113148585] [2022-01-11 01:12:49,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2113148585] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:12:49,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:12:49,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:12:49,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618823123] [2022-01-11 01:12:49,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:12:49,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:12:49,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:12:49,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:12:49,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:49,704 INFO L87 Difference]: Start difference. First operand 67608 states and 85107 transitions. Second operand has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:12:57,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:12:57,110 INFO L93 Difference]: Finished difference Result 192663 states and 239757 transitions. [2022-01-11 01:12:57,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:12:57,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 60.666666666666664) internal successors, (182), 3 states have internal predecessors, (182), 0 states have call successors, (0), 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 182 [2022-01-11 01:12:57,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:12:57,313 INFO L225 Difference]: With dead ends: 192663 [2022-01-11 01:12:57,313 INFO L226 Difference]: Without dead ends: 127277 [2022-01-11 01:12:57,362 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:12:57,363 INFO L933 BasicCegarLoop]: 5216 mSDtfsCounter, 4893 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4893 SdHoareTripleChecker+Valid, 6230 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:12:57,363 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4893 Valid, 6230 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:12:57,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127277 states.