/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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 01:46:27,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 01:46:27,870 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 01:46:27,917 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 01:46:27,929 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 01:46:27,929 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 01:46:27,930 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 01:46:27,931 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 01:46:27,931 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 01:46:27,932 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 01:46:27,948 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 01:46:27,949 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 01:46:27,950 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 01:46:27,950 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 01:46:27,951 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 01:46:27,952 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 01:46:27,953 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-11 01:46:27,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 01:46:27,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 01:46:27,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 01:46:27,964 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 01:46:27,992 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 01:46:27,993 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 01:46:27,993 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 01:46:27,993 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 01:46:27,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 01:46:27,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 01:46:27,994 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 01:46:27,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 01:46:27,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 01:46:27,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 01:46:27,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 01:46:27,995 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 01:46:27,995 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:46:27,996 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 01:46:27,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 01:46:27,997 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 01:46:27,997 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 01:46:27,997 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 01:46:27,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 01:46:28,162 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 01:46:28,175 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 01:46:28,176 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 01:46:28,177 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 01:46:28,178 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 01:46:28,178 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-01-11 01:46:28,233 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67bdc86c/904592f755f1427cb0a73d3935a0839f/FLAG53d5d16a5 [2022-01-11 01:46:28,598 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 01:46:28,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_1.cil-2+token_ring.04.cil-1.c [2022-01-11 01:46:28,608 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67bdc86c/904592f755f1427cb0a73d3935a0839f/FLAG53d5d16a5 [2022-01-11 01:46:28,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d67bdc86c/904592f755f1427cb0a73d3935a0839f [2022-01-11 01:46:28,620 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 01:46:28,620 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 01:46:28,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 01:46:28,627 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 01:46:28,632 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 01:46:28,633 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:28,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d9934be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28, skipping insertion in model container [2022-01-11 01:46:28,634 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:28,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 01:46:28,674 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 01:46:28,776 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-01-11 01:46:28,814 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-01-11 01:46:28,849 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:46:28,865 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 01:46:28,872 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[913,926] [2022-01-11 01:46:28,884 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/pc_sfifo_1.cil-2+token_ring.04.cil-1.c[5977,5990] [2022-01-11 01:46:28,917 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 01:46:28,933 INFO L208 MainTranslator]: Completed translation [2022-01-11 01:46:28,934 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28 WrapperNode [2022-01-11 01:46:28,934 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 01:46:28,934 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 01:46:28,934 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 01:46:28,934 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 01:46:28,946 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:28,954 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:28,999 INFO L137 Inliner]: procedures = 57, calls = 60, calls flagged for inlining = 55, calls inlined = 96, statements flattened = 1315 [2022-01-11 01:46:28,999 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 01:46:29,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 01:46:29,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 01:46:29,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 01:46:29,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,012 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,026 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,052 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,056 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 01:46:29,056 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 01:46:29,056 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 01:46:29,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 01:46:29,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (1/1) ... [2022-01-11 01:46:29,068 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 01:46:29,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:46:29,114 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 01:46:29,119 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 01:46:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 01:46:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 01:46:29,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 01:46:29,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 01:46:29,237 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 01:46:29,238 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 01:46:29,932 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 01:46:29,952 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 01:46:29,953 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-11 01:46:29,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:46:29 BoogieIcfgContainer [2022-01-11 01:46:29,955 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 01:46:29,955 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 01:46:29,955 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 01:46:29,956 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 01:46:29,959 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:46:29" (1/1) ... [2022-01-11 01:46:30,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:46:30 BasicIcfg [2022-01-11 01:46:30,127 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 01:46:30,128 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 01:46:30,128 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 01:46:30,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 01:46:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 01:46:28" (1/4) ... [2022-01-11 01:46:30,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195d7ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:46:30, skipping insertion in model container [2022-01-11 01:46:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 01:46:28" (2/4) ... [2022-01-11 01:46:30,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195d7ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 01:46:30, skipping insertion in model container [2022-01-11 01:46:30,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 01:46:29" (3/4) ... [2022-01-11 01:46:30,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@195d7ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 01:46:30, skipping insertion in model container [2022-01-11 01:46:30,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 01:46:30" (4/4) ... [2022-01-11 01:46:30,133 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.04.cil-1.cTransformedIcfg [2022-01-11 01:46:30,136 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 01:46:30,136 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2022-01-11 01:46:30,185 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 01:46:30,189 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 01:46:30,190 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-11 01:46:30,212 INFO L276 IsEmpty]: Start isEmpty. Operand has 511 states, 507 states have (on average 1.5404339250493098) internal successors, (781), 510 states have internal predecessors, (781), 0 states have call successors, (0), 0 states 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 01:46:30,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-11 01:46:30,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:30,222 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] [2022-01-11 01:46:30,223 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:30,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1086388923, now seen corresponding path program 1 times [2022-01-11 01:46:30,235 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:30,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533480593] [2022-01-11 01:46:30,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:30,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:30,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:30,491 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 01:46:30,492 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:30,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533480593] [2022-01-11 01:46:30,492 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533480593] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:30,492 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:30,493 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:30,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500640168] [2022-01-11 01:46:30,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:30,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:30,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:30,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:30,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:30,527 INFO L87 Difference]: Start difference. First operand has 511 states, 507 states have (on average 1.5404339250493098) internal successors, (781), 510 states have internal predecessors, (781), 0 states have call successors, (0), 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 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 01:46:30,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:30,668 INFO L93 Difference]: Finished difference Result 1017 states and 1548 transitions. [2022-01-11 01:46:30,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:30,671 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 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 36 [2022-01-11 01:46:30,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:30,681 INFO L225 Difference]: With dead ends: 1017 [2022-01-11 01:46:30,681 INFO L226 Difference]: Without dead ends: 566 [2022-01-11 01:46:30,687 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 01:46:30,689 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 724 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 857 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:30,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 857 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:30,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 566 states. [2022-01-11 01:46:30,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 566 to 545. [2022-01-11 01:46:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 542 states have (on average 1.485239852398524) internal successors, (805), 544 states have internal predecessors, (805), 0 states have call successors, (0), 0 states 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 01:46:30,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 805 transitions. [2022-01-11 01:46:30,746 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 805 transitions. Word has length 36 [2022-01-11 01:46:30,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:30,746 INFO L470 AbstractCegarLoop]: Abstraction has 545 states and 805 transitions. [2022-01-11 01:46:30,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states 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 01:46:30,746 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 805 transitions. [2022-01-11 01:46:30,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 01:46:30,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:30,748 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:30,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 01:46:30,748 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:30,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:30,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1121483165, now seen corresponding path program 1 times [2022-01-11 01:46:30,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:30,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864559399] [2022-01-11 01:46:30,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:30,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:30,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:30,802 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 01:46:30,803 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:30,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864559399] [2022-01-11 01:46:30,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864559399] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:30,803 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:30,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:30,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561009201] [2022-01-11 01:46:30,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:30,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:30,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:30,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:30,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:30,805 INFO L87 Difference]: Start difference. First operand 545 states and 805 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:30,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:30,837 INFO L93 Difference]: Finished difference Result 758 states and 1099 transitions. [2022-01-11 01:46:30,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:30,838 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 01:46:30,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:30,841 INFO L225 Difference]: With dead ends: 758 [2022-01-11 01:46:30,842 INFO L226 Difference]: Without dead ends: 647 [2022-01-11 01:46:30,845 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 01:46:30,846 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 715 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 715 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:30,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [715 Valid, 830 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:30,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-01-11 01:46:30,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 643. [2022-01-11 01:46:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 643 states, 640 states have (on average 1.465625) internal successors, (938), 642 states have internal predecessors, (938), 0 states have call successors, (0), 0 states 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 01:46:30,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 938 transitions. [2022-01-11 01:46:30,882 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 938 transitions. Word has length 37 [2022-01-11 01:46:30,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:30,882 INFO L470 AbstractCegarLoop]: Abstraction has 643 states and 938 transitions. [2022-01-11 01:46:30,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:30,883 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 938 transitions. [2022-01-11 01:46:30,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-01-11 01:46:30,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:30,890 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:30,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 01:46:30,892 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:30,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:30,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1744335931, now seen corresponding path program 1 times [2022-01-11 01:46:30,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:30,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583592892] [2022-01-11 01:46:30,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:30,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:30,957 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 01:46:30,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:30,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583592892] [2022-01-11 01:46:30,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583592892] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:30,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:30,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:30,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835777095] [2022-01-11 01:46:30,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:30,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:30,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:30,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:30,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:30,960 INFO L87 Difference]: Start difference. First operand 643 states and 938 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:30,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:30,996 INFO L93 Difference]: Finished difference Result 962 states and 1377 transitions. [2022-01-11 01:46:30,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:30,996 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2022-01-11 01:46:30,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:30,998 INFO L225 Difference]: With dead ends: 962 [2022-01-11 01:46:30,999 INFO L226 Difference]: Without dead ends: 753 [2022-01-11 01:46:31,002 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 01:46:31,005 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 60 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1447 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-11 01:46:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 729. [2022-01-11 01:46:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 729 states, 726 states have (on average 1.4517906336088153) internal successors, (1054), 728 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states 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 01:46:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 729 states to 729 states and 1054 transitions. [2022-01-11 01:46:31,025 INFO L78 Accepts]: Start accepts. Automaton has 729 states and 1054 transitions. Word has length 37 [2022-01-11 01:46:31,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,026 INFO L470 AbstractCegarLoop]: Abstraction has 729 states and 1054 transitions. [2022-01-11 01:46:31,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 729 states and 1054 transitions. [2022-01-11 01:46:31,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-11 01:46:31,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,029 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:31,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 01:46:31,030 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash -1869724085, now seen corresponding path program 1 times [2022-01-11 01:46:31,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467706148] [2022-01-11 01:46:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:31,090 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:31,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:31,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467706148] [2022-01-11 01:46:31,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467706148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:31,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:31,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:31,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083029871] [2022-01-11 01:46:31,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:31,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:31,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:31,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:31,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:31,093 INFO L87 Difference]: Start difference. First operand 729 states and 1054 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 01:46:31,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:31,124 INFO L93 Difference]: Finished difference Result 1180 states and 1661 transitions. [2022-01-11 01:46:31,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:31,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 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 51 [2022-01-11 01:46:31,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:31,127 INFO L225 Difference]: With dead ends: 1180 [2022-01-11 01:46:31,127 INFO L226 Difference]: Without dead ends: 885 [2022-01-11 01:46:31,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:31,134 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 48 mSDsluCounter, 731 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 1527 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 885 states. [2022-01-11 01:46:31,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 885 to 885. [2022-01-11 01:46:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 885 states, 882 states have (on average 1.4081632653061225) internal successors, (1242), 884 states have internal predecessors, (1242), 0 states have call successors, (0), 0 states 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 01:46:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 885 states to 885 states and 1242 transitions. [2022-01-11 01:46:31,151 INFO L78 Accepts]: Start accepts. Automaton has 885 states and 1242 transitions. Word has length 51 [2022-01-11 01:46:31,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,151 INFO L470 AbstractCegarLoop]: Abstraction has 885 states and 1242 transitions. [2022-01-11 01:46:31,151 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states 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 01:46:31,151 INFO L276 IsEmpty]: Start isEmpty. Operand 885 states and 1242 transitions. [2022-01-11 01:46:31,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-11 01:46:31,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,153 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] [2022-01-11 01:46:31,153 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 01:46:31,153 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1003008896, now seen corresponding path program 1 times [2022-01-11 01:46:31,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810941430] [2022-01-11 01:46:31,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:31,209 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 01:46:31,209 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:31,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810941430] [2022-01-11 01:46:31,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810941430] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:31,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:31,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:31,210 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231477656] [2022-01-11 01:46:31,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:31,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:31,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:31,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:31,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:31,210 INFO L87 Difference]: Start difference. First operand 885 states and 1242 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 01:46:31,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:31,254 INFO L93 Difference]: Finished difference Result 1358 states and 1858 transitions. [2022-01-11 01:46:31,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:31,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 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 55 [2022-01-11 01:46:31,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:31,259 INFO L225 Difference]: With dead ends: 1358 [2022-01-11 01:46:31,259 INFO L226 Difference]: Without dead ends: 993 [2022-01-11 01:46:31,259 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 01:46:31,260 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 689 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 831 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-01-11 01:46:31,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 993. [2022-01-11 01:46:31,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 990 states have (on average 1.3838383838383839) internal successors, (1370), 992 states have internal predecessors, (1370), 0 states have call successors, (0), 0 states 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 01:46:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1370 transitions. [2022-01-11 01:46:31,281 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1370 transitions. Word has length 55 [2022-01-11 01:46:31,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,283 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 1370 transitions. [2022-01-11 01:46:31,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 0 states have call successors, (0), 0 states 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 01:46:31,284 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1370 transitions. [2022-01-11 01:46:31,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 01:46:31,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,286 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:31,286 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 01:46:31,286 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,287 INFO L85 PathProgramCache]: Analyzing trace with hash -2092140992, now seen corresponding path program 1 times [2022-01-11 01:46:31,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922258558] [2022-01-11 01:46:31,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:31,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:31,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922258558] [2022-01-11 01:46:31,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922258558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:31,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:31,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:46:31,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400002390] [2022-01-11 01:46:31,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:31,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:46:31,362 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:31,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:46:31,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:31,363 INFO L87 Difference]: Start difference. First operand 993 states and 1370 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:31,479 INFO L93 Difference]: Finished difference Result 2076 states and 2774 transitions. [2022-01-11 01:46:31,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:46:31,479 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 01:46:31,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:31,484 INFO L225 Difference]: With dead ends: 2076 [2022-01-11 01:46:31,484 INFO L226 Difference]: Without dead ends: 1653 [2022-01-11 01:46:31,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 01:46:31,486 INFO L933 BasicCegarLoop]: 816 mSDtfsCounter, 302 mSDsluCounter, 2366 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [302 Valid, 3182 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1653 states. [2022-01-11 01:46:31,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1653 to 1017. [2022-01-11 01:46:31,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1017 states, 1014 states have (on average 1.370808678500986) internal successors, (1390), 1016 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states 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 01:46:31,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1017 states to 1017 states and 1390 transitions. [2022-01-11 01:46:31,528 INFO L78 Accepts]: Start accepts. Automaton has 1017 states and 1390 transitions. Word has length 56 [2022-01-11 01:46:31,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,529 INFO L470 AbstractCegarLoop]: Abstraction has 1017 states and 1390 transitions. [2022-01-11 01:46:31,529 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,529 INFO L276 IsEmpty]: Start isEmpty. Operand 1017 states and 1390 transitions. [2022-01-11 01:46:31,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 01:46:31,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,530 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:31,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 01:46:31,530 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1741341055, now seen corresponding path program 1 times [2022-01-11 01:46:31,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808231464] [2022-01-11 01:46:31,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:31,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:31,591 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:31,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808231464] [2022-01-11 01:46:31,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808231464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:31,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:31,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:46:31,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506710231] [2022-01-11 01:46:31,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:31,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:46:31,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:31,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:46:31,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:31,592 INFO L87 Difference]: Start difference. First operand 1017 states and 1390 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:31,701 INFO L93 Difference]: Finished difference Result 1806 states and 2400 transitions. [2022-01-11 01:46:31,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:46:31,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 01:46:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:31,705 INFO L225 Difference]: With dead ends: 1806 [2022-01-11 01:46:31,705 INFO L226 Difference]: Without dead ends: 1308 [2022-01-11 01:46:31,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 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 01:46:31,707 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 276 mSDsluCounter, 2335 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [276 Valid, 3128 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1308 states. [2022-01-11 01:46:31,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1308 to 915. [2022-01-11 01:46:31,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 915 states, 912 states have (on average 1.3804824561403508) internal successors, (1259), 914 states have internal predecessors, (1259), 0 states have call successors, (0), 0 states 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 01:46:31,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 915 states to 915 states and 1259 transitions. [2022-01-11 01:46:31,743 INFO L78 Accepts]: Start accepts. Automaton has 915 states and 1259 transitions. Word has length 56 [2022-01-11 01:46:31,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,744 INFO L470 AbstractCegarLoop]: Abstraction has 915 states and 1259 transitions. [2022-01-11 01:46:31,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,744 INFO L276 IsEmpty]: Start isEmpty. Operand 915 states and 1259 transitions. [2022-01-11 01:46:31,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-11 01:46:31,745 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,745 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:31,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 01:46:31,745 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,746 INFO L85 PathProgramCache]: Analyzing trace with hash 476446689, now seen corresponding path program 1 times [2022-01-11 01:46:31,746 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372004200] [2022-01-11 01:46:31,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:31,828 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:31,828 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:31,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372004200] [2022-01-11 01:46:31,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372004200] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:31,828 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:31,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-11 01:46:31,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325384234] [2022-01-11 01:46:31,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:31,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-11 01:46:31,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:31,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-11 01:46:31,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-11 01:46:31,830 INFO L87 Difference]: Start difference. First operand 915 states and 1259 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:31,911 INFO L93 Difference]: Finished difference Result 965 states and 1319 transitions. [2022-01-11 01:46:31,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-11 01:46:31,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 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 56 [2022-01-11 01:46:31,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:31,914 INFO L225 Difference]: With dead ends: 965 [2022-01-11 01:46:31,914 INFO L226 Difference]: Without dead ends: 963 [2022-01-11 01:46:31,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:31,915 INFO L933 BasicCegarLoop]: 743 mSDtfsCounter, 1454 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 812 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:31,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1454 Valid, 812 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:31,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-01-11 01:46:31,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 913. [2022-01-11 01:46:31,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 913 states, 911 states have (on average 1.3787047200878155) internal successors, (1256), 912 states have internal predecessors, (1256), 0 states have call successors, (0), 0 states 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 01:46:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 913 states to 913 states and 1256 transitions. [2022-01-11 01:46:31,960 INFO L78 Accepts]: Start accepts. Automaton has 913 states and 1256 transitions. Word has length 56 [2022-01-11 01:46:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:31,960 INFO L470 AbstractCegarLoop]: Abstraction has 913 states and 1256 transitions. [2022-01-11 01:46:31,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 0 states have call successors, (0), 0 states 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 01:46:31,960 INFO L276 IsEmpty]: Start isEmpty. Operand 913 states and 1256 transitions. [2022-01-11 01:46:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-11 01:46:31,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:31,961 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:31,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 01:46:31,961 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:31,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1884946620, now seen corresponding path program 1 times [2022-01-11 01:46:31,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:31,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908239487] [2022-01-11 01:46:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:31,962 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:32,086 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:32,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908239487] [2022-01-11 01:46:32,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908239487] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-11 01:46:32,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [488419379] [2022-01-11 01:46:32,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:32,086 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:46:32,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 01:46:32,088 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-11 01:46:32,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-11 01:46:32,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:32,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-11 01:46:32,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-11 01:46:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:32,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-11 01:46:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:32,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [488419379] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-11 01:46:32,685 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-11 01:46:32,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-01-11 01:46:32,685 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455998252] [2022-01-11 01:46:32,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-11 01:46:32,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-11 01:46:32,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:32,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-11 01:46:32,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 01:46:32,687 INFO L87 Difference]: Start difference. First operand 913 states and 1256 transitions. Second operand has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 01:46:32,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:32,864 INFO L93 Difference]: Finished difference Result 1799 states and 2384 transitions. [2022-01-11 01:46:32,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-11 01:46:32,865 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-11 01:46:32,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:32,871 INFO L225 Difference]: With dead ends: 1799 [2022-01-11 01:46:32,871 INFO L226 Difference]: Without dead ends: 1797 [2022-01-11 01:46:32,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 108 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-11 01:46:32,873 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1672 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:32,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 4260 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:32,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-01-11 01:46:32,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1185. [2022-01-11 01:46:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 1183 states have (on average 1.360101437024514) internal successors, (1609), 1184 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states 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 01:46:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1609 transitions. [2022-01-11 01:46:32,955 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1609 transitions. Word has length 57 [2022-01-11 01:46:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:32,956 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1609 transitions. [2022-01-11 01:46:32,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 15.1) internal successors, (151), 10 states have internal predecessors, (151), 0 states have call successors, (0), 0 states 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 01:46:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1609 transitions. [2022-01-11 01:46:32,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-11 01:46:32,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:32,958 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:32,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-11 01:46:33,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-11 01:46:33,167 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:33,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:33,168 INFO L85 PathProgramCache]: Analyzing trace with hash 417954163, now seen corresponding path program 2 times [2022-01-11 01:46:33,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:33,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550911320] [2022-01-11 01:46:33,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:33,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:33,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:33,206 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:33,207 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:33,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550911320] [2022-01-11 01:46:33,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550911320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:33,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:33,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:33,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541983512] [2022-01-11 01:46:33,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:33,210 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:33,210 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:33,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:33,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:33,210 INFO L87 Difference]: Start difference. First operand 1185 states and 1609 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:46:33,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:33,290 INFO L93 Difference]: Finished difference Result 1692 states and 2269 transitions. [2022-01-11 01:46:33,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:33,290 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2022-01-11 01:46:33,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:33,293 INFO L225 Difference]: With dead ends: 1692 [2022-01-11 01:46:33,293 INFO L226 Difference]: Without dead ends: 1096 [2022-01-11 01:46:33,295 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 01:46:33,296 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 693 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:33,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [693 Valid, 846 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:33,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1096 states. [2022-01-11 01:46:33,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1096 to 1070. [2022-01-11 01:46:33,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1070 states, 1068 states have (on average 1.3642322097378277) internal successors, (1457), 1069 states have internal predecessors, (1457), 0 states have call successors, (0), 0 states 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 01:46:33,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1457 transitions. [2022-01-11 01:46:33,358 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1457 transitions. Word has length 72 [2022-01-11 01:46:33,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:33,358 INFO L470 AbstractCegarLoop]: Abstraction has 1070 states and 1457 transitions. [2022-01-11 01:46:33,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states 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 01:46:33,358 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1457 transitions. [2022-01-11 01:46:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:33,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:33,361 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] [2022-01-11 01:46:33,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 01:46:33,361 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:33,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1989801897, now seen corresponding path program 1 times [2022-01-11 01:46:33,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:33,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694443543] [2022-01-11 01:46:33,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:33,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:46:33,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:33,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694443543] [2022-01-11 01:46:33,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694443543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:33,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:33,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:33,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531730320] [2022-01-11 01:46:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:33,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:33,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:33,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:33,384 INFO L87 Difference]: Start difference. First operand 1070 states and 1457 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:33,461 INFO L93 Difference]: Finished difference Result 1809 states and 2560 transitions. [2022-01-11 01:46:33,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:33,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:33,465 INFO L225 Difference]: With dead ends: 1809 [2022-01-11 01:46:33,466 INFO L226 Difference]: Without dead ends: 1393 [2022-01-11 01:46:33,466 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 01:46:33,467 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 673 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 673 SdHoareTripleChecker+Valid, 1262 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 01:46:33,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [673 Valid, 1262 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:33,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1393 states. [2022-01-11 01:46:33,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1393 to 1391. [2022-01-11 01:46:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3909287257019438) internal successors, (1932), 1390 states have internal predecessors, (1932), 0 states have call successors, (0), 0 states 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 01:46:33,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1932 transitions. [2022-01-11 01:46:33,547 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1932 transitions. Word has length 77 [2022-01-11 01:46:33,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:33,548 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1932 transitions. [2022-01-11 01:46:33,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1932 transitions. [2022-01-11 01:46:33,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:33,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:33,549 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] [2022-01-11 01:46:33,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 01:46:33,549 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:33,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:33,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1694092489, now seen corresponding path program 1 times [2022-01-11 01:46:33,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:33,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495763672] [2022-01-11 01:46:33,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:33,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:33,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:33,568 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 01:46:33,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:33,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495763672] [2022-01-11 01:46:33,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495763672] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:33,569 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:33,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:33,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001507193] [2022-01-11 01:46:33,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:33,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:33,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:33,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:33,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:33,570 INFO L87 Difference]: Start difference. First operand 1391 states and 1932 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:33,640 INFO L93 Difference]: Finished difference Result 2127 states and 3029 transitions. [2022-01-11 01:46:33,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:33,640 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:33,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:33,644 INFO L225 Difference]: With dead ends: 2127 [2022-01-11 01:46:33,645 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:33,646 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 01:46:33,647 INFO L933 BasicCegarLoop]: 730 mSDtfsCounter, 723 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 723 SdHoareTripleChecker+Valid, 730 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 01:46:33,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [723 Valid, 730 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:33,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:33,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3851691864650828) internal successors, (1924), 1390 states have internal predecessors, (1924), 0 states have call successors, (0), 0 states 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 01:46:33,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1924 transitions. [2022-01-11 01:46:33,726 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1924 transitions. Word has length 77 [2022-01-11 01:46:33,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:33,727 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1924 transitions. [2022-01-11 01:46:33,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,727 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1924 transitions. [2022-01-11 01:46:33,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:33,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:33,728 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] [2022-01-11 01:46:33,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 01:46:33,728 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:33,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:33,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1363487831, now seen corresponding path program 1 times [2022-01-11 01:46:33,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:33,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712485149] [2022-01-11 01:46:33,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:33,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:33,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:33,783 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 01:46:33,783 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:33,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712485149] [2022-01-11 01:46:33,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712485149] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:33,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:33,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:33,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767542876] [2022-01-11 01:46:33,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:33,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:33,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:33,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:33,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:33,785 INFO L87 Difference]: Start difference. First operand 1391 states and 1924 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:33,877 INFO L93 Difference]: Finished difference Result 2126 states and 3012 transitions. [2022-01-11 01:46:33,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:33,877 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:33,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:33,881 INFO L225 Difference]: With dead ends: 2126 [2022-01-11 01:46:33,881 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:33,882 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 01:46:33,883 INFO L933 BasicCegarLoop]: 725 mSDtfsCounter, 717 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 717 SdHoareTripleChecker+Valid, 725 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 01:46:33,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [717 Valid, 725 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:33,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:33,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:33,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3794096472282218) internal successors, (1916), 1390 states have internal predecessors, (1916), 0 states have call successors, (0), 0 states 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 01:46:33,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1916 transitions. [2022-01-11 01:46:33,956 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1916 transitions. Word has length 77 [2022-01-11 01:46:33,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:33,957 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1916 transitions. [2022-01-11 01:46:33,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:33,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1916 transitions. [2022-01-11 01:46:33,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:33,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:33,958 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] [2022-01-11 01:46:33,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 01:46:33,958 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:33,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:33,960 INFO L85 PathProgramCache]: Analyzing trace with hash 2001563849, now seen corresponding path program 1 times [2022-01-11 01:46:33,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:33,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451330582] [2022-01-11 01:46:33,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:33,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:33,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:33,984 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 01:46:33,984 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:33,985 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451330582] [2022-01-11 01:46:33,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451330582] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:33,985 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:33,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:33,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594884523] [2022-01-11 01:46:33,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:33,986 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:33,986 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:33,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:33,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:33,986 INFO L87 Difference]: Start difference. First operand 1391 states and 1916 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:34,059 INFO L93 Difference]: Finished difference Result 2125 states and 2995 transitions. [2022-01-11 01:46:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:34,059 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:34,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:34,063 INFO L225 Difference]: With dead ends: 2125 [2022-01-11 01:46:34,063 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:34,064 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 01:46:34,064 INFO L933 BasicCegarLoop]: 720 mSDtfsCounter, 711 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 711 SdHoareTripleChecker+Valid, 720 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 01:46:34,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [711 Valid, 720 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:34,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:34,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3736501079913608) internal successors, (1908), 1390 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states 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 01:46:34,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1908 transitions. [2022-01-11 01:46:34,141 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1908 transitions. Word has length 77 [2022-01-11 01:46:34,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:34,141 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1908 transitions. [2022-01-11 01:46:34,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1908 transitions. [2022-01-11 01:46:34,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:34,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:34,143 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] [2022-01-11 01:46:34,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 01:46:34,143 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:34,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:34,143 INFO L85 PathProgramCache]: Analyzing trace with hash -245190743, now seen corresponding path program 1 times [2022-01-11 01:46:34,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:34,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986617743] [2022-01-11 01:46:34,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:34,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:34,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:34,170 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 01:46:34,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:34,171 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986617743] [2022-01-11 01:46:34,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986617743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:34,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:34,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:34,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638749802] [2022-01-11 01:46:34,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:34,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:34,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:34,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:34,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:34,174 INFO L87 Difference]: Start difference. First operand 1391 states and 1908 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:34,249 INFO L93 Difference]: Finished difference Result 2124 states and 2978 transitions. [2022-01-11 01:46:34,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:34,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:34,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:34,252 INFO L225 Difference]: With dead ends: 2124 [2022-01-11 01:46:34,252 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:34,254 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 01:46:34,255 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 705 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 715 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 01:46:34,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 715 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:34,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:34,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3678905687544995) internal successors, (1900), 1390 states have internal predecessors, (1900), 0 states have call successors, (0), 0 states 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 01:46:34,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1900 transitions. [2022-01-11 01:46:34,349 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1900 transitions. Word has length 77 [2022-01-11 01:46:34,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:34,349 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1900 transitions. [2022-01-11 01:46:34,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,350 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1900 transitions. [2022-01-11 01:46:34,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:34,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:34,351 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] [2022-01-11 01:46:34,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 01:46:34,351 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:34,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1841687351, now seen corresponding path program 1 times [2022-01-11 01:46:34,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:34,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864537915] [2022-01-11 01:46:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:34,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:34,375 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 01:46:34,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:34,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864537915] [2022-01-11 01:46:34,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864537915] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:34,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:34,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:34,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444348851] [2022-01-11 01:46:34,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:34,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:34,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:34,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:34,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:34,376 INFO L87 Difference]: Start difference. First operand 1391 states and 1900 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:34,459 INFO L93 Difference]: Finished difference Result 2123 states and 2961 transitions. [2022-01-11 01:46:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:34,463 INFO L225 Difference]: With dead ends: 2123 [2022-01-11 01:46:34,463 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:34,464 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 01:46:34,465 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 640 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:34,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [640 Valid, 744 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:34,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:34,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:34,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.353491720662347) internal successors, (1880), 1390 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states 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 01:46:34,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1880 transitions. [2022-01-11 01:46:34,542 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1880 transitions. Word has length 77 [2022-01-11 01:46:34,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:34,543 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1880 transitions. [2022-01-11 01:46:34,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,543 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1880 transitions. [2022-01-11 01:46:34,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:34,544 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:34,544 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] [2022-01-11 01:46:34,544 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 01:46:34,544 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:34,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:34,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1847796184, now seen corresponding path program 1 times [2022-01-11 01:46:34,545 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:34,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405893357] [2022-01-11 01:46:34,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:34,545 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:34,564 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 01:46:34,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:34,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405893357] [2022-01-11 01:46:34,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405893357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:34,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:34,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:34,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859108414] [2022-01-11 01:46:34,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:34,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:34,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:34,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:34,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:34,565 INFO L87 Difference]: Start difference. First operand 1391 states and 1880 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:34,659 INFO L93 Difference]: Finished difference Result 2122 states and 2920 transitions. [2022-01-11 01:46:34,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:34,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:34,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:34,663 INFO L225 Difference]: With dead ends: 2122 [2022-01-11 01:46:34,663 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:34,664 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 01:46:34,664 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 628 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:34,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 731 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:34,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:34,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:34,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3390928725701945) internal successors, (1860), 1390 states have internal predecessors, (1860), 0 states have call successors, (0), 0 states 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 01:46:34,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1860 transitions. [2022-01-11 01:46:34,735 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1860 transitions. Word has length 77 [2022-01-11 01:46:34,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:34,736 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1860 transitions. [2022-01-11 01:46:34,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1860 transitions. [2022-01-11 01:46:34,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:34,737 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:34,737 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] [2022-01-11 01:46:34,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 01:46:34,737 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:34,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:34,737 INFO L85 PathProgramCache]: Analyzing trace with hash -659953401, now seen corresponding path program 1 times [2022-01-11 01:46:34,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:34,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150561916] [2022-01-11 01:46:34,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:34,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:34,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:34,756 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 01:46:34,757 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:34,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150561916] [2022-01-11 01:46:34,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150561916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:34,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:34,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:34,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817157017] [2022-01-11 01:46:34,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:34,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:34,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:34,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:34,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:34,758 INFO L87 Difference]: Start difference. First operand 1391 states and 1860 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:34,851 INFO L93 Difference]: Finished difference Result 2121 states and 2879 transitions. [2022-01-11 01:46:34,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:34,851 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:34,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:34,855 INFO L225 Difference]: With dead ends: 2121 [2022-01-11 01:46:34,855 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:34,856 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 01:46:34,856 INFO L933 BasicCegarLoop]: 672 mSDtfsCounter, 616 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:34,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 718 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:34,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:34,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:34,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3246940244780419) internal successors, (1840), 1390 states have internal predecessors, (1840), 0 states have call successors, (0), 0 states 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 01:46:34,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1840 transitions. [2022-01-11 01:46:34,937 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1840 transitions. Word has length 77 [2022-01-11 01:46:34,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:34,937 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1840 transitions. [2022-01-11 01:46:34,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:34,937 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1840 transitions. [2022-01-11 01:46:34,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:34,938 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:34,938 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] [2022-01-11 01:46:34,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 01:46:34,938 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:34,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:34,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1577226010, now seen corresponding path program 1 times [2022-01-11 01:46:34,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:34,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865203665] [2022-01-11 01:46:34,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:34,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:34,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:34,959 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 01:46:34,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:34,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865203665] [2022-01-11 01:46:34,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865203665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:34,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:34,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:34,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175931255] [2022-01-11 01:46:34,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:34,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:34,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:34,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:34,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:34,960 INFO L87 Difference]: Start difference. First operand 1391 states and 1840 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:35,051 INFO L93 Difference]: Finished difference Result 2120 states and 2838 transitions. [2022-01-11 01:46:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:35,051 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:35,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:35,054 INFO L225 Difference]: With dead ends: 2120 [2022-01-11 01:46:35,055 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:35,056 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 01:46:35,056 INFO L933 BasicCegarLoop]: 660 mSDtfsCounter, 604 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:35,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [604 Valid, 705 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:35,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:35,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:35,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.3102951763858892) internal successors, (1820), 1390 states have internal predecessors, (1820), 0 states have call successors, (0), 0 states 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 01:46:35,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1820 transitions. [2022-01-11 01:46:35,142 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1820 transitions. Word has length 77 [2022-01-11 01:46:35,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:35,142 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1820 transitions. [2022-01-11 01:46:35,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,143 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1820 transitions. [2022-01-11 01:46:35,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:35,144 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:35,144 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] [2022-01-11 01:46:35,144 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 01:46:35,144 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:35,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:35,144 INFO L85 PathProgramCache]: Analyzing trace with hash 2075830853, now seen corresponding path program 1 times [2022-01-11 01:46:35,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:35,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917509453] [2022-01-11 01:46:35,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:35,145 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:35,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:35,162 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 01:46:35,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:35,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917509453] [2022-01-11 01:46:35,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917509453] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:35,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:35,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:35,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970384999] [2022-01-11 01:46:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:35,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:35,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:35,164 INFO L87 Difference]: Start difference. First operand 1391 states and 1820 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:35,258 INFO L93 Difference]: Finished difference Result 2119 states and 2797 transitions. [2022-01-11 01:46:35,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:35,259 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:35,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:35,262 INFO L225 Difference]: With dead ends: 2119 [2022-01-11 01:46:35,262 INFO L226 Difference]: Without dead ends: 1391 [2022-01-11 01:46:35,263 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 01:46:35,263 INFO L933 BasicCegarLoop]: 648 mSDtfsCounter, 592 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 592 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:35,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [592 Valid, 692 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:35,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2022-01-11 01:46:35,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1391. [2022-01-11 01:46:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1391 states, 1389 states have (on average 1.2958963282937366) internal successors, (1800), 1390 states have internal predecessors, (1800), 0 states have call successors, (0), 0 states 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 01:46:35,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1391 states to 1391 states and 1800 transitions. [2022-01-11 01:46:35,356 INFO L78 Accepts]: Start accepts. Automaton has 1391 states and 1800 transitions. Word has length 77 [2022-01-11 01:46:35,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:35,356 INFO L470 AbstractCegarLoop]: Abstraction has 1391 states and 1800 transitions. [2022-01-11 01:46:35,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,356 INFO L276 IsEmpty]: Start isEmpty. Operand 1391 states and 1800 transitions. [2022-01-11 01:46:35,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:35,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:35,357 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] [2022-01-11 01:46:35,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 01:46:35,357 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:35,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:35,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1725779804, now seen corresponding path program 1 times [2022-01-11 01:46:35,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:35,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958966446] [2022-01-11 01:46:35,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:35,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:35,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:35,393 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 01:46:35,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:35,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958966446] [2022-01-11 01:46:35,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958966446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:35,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:35,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:46:35,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574961228] [2022-01-11 01:46:35,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:35,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:46:35,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:35,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:46:35,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:35,395 INFO L87 Difference]: Start difference. First operand 1391 states and 1800 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:35,564 INFO L93 Difference]: Finished difference Result 2490 states and 3269 transitions. [2022-01-11 01:46:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:46:35,564 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:35,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:35,569 INFO L225 Difference]: With dead ends: 2490 [2022-01-11 01:46:35,570 INFO L226 Difference]: Without dead ends: 1769 [2022-01-11 01:46:35,571 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 01:46:35,571 INFO L933 BasicCegarLoop]: 708 mSDtfsCounter, 1512 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:35,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1512 Valid, 1800 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:35,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2022-01-11 01:46:35,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1397. [2022-01-11 01:46:35,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1397 states, 1395 states have (on average 1.2860215053763442) internal successors, (1794), 1396 states have internal predecessors, (1794), 0 states have call successors, (0), 0 states 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 01:46:35,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1397 states to 1397 states and 1794 transitions. [2022-01-11 01:46:35,684 INFO L78 Accepts]: Start accepts. Automaton has 1397 states and 1794 transitions. Word has length 77 [2022-01-11 01:46:35,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:35,684 INFO L470 AbstractCegarLoop]: Abstraction has 1397 states and 1794 transitions. [2022-01-11 01:46:35,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1397 states and 1794 transitions. [2022-01-11 01:46:35,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:35,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:35,686 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] [2022-01-11 01:46:35,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 01:46:35,686 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:35,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:35,686 INFO L85 PathProgramCache]: Analyzing trace with hash -592589211, now seen corresponding path program 1 times [2022-01-11 01:46:35,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:35,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444756541] [2022-01-11 01:46:35,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:35,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:35,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:35,719 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 01:46:35,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:35,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444756541] [2022-01-11 01:46:35,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444756541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:35,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:35,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:46:35,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241676139] [2022-01-11 01:46:35,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:35,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:46:35,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:35,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:46:35,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:35,721 INFO L87 Difference]: Start difference. First operand 1397 states and 1794 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:35,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:35,907 INFO L93 Difference]: Finished difference Result 2606 states and 3384 transitions. [2022-01-11 01:46:35,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:46:35,908 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:35,921 INFO L225 Difference]: With dead ends: 2606 [2022-01-11 01:46:35,921 INFO L226 Difference]: Without dead ends: 1893 [2022-01-11 01:46:35,923 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 01:46:35,924 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 1318 mSDsluCounter, 1397 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1318 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:35,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1318 Valid, 2062 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2022-01-11 01:46:36,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1403. [2022-01-11 01:46:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1403 states, 1401 states have (on average 1.2762312633832977) internal successors, (1788), 1402 states have internal predecessors, (1788), 0 states have call successors, (0), 0 states 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 01:46:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1403 states to 1403 states and 1788 transitions. [2022-01-11 01:46:36,054 INFO L78 Accepts]: Start accepts. Automaton has 1403 states and 1788 transitions. Word has length 77 [2022-01-11 01:46:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:36,054 INFO L470 AbstractCegarLoop]: Abstraction has 1403 states and 1788 transitions. [2022-01-11 01:46:36,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 1403 states and 1788 transitions. [2022-01-11 01:46:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:36,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:36,056 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] [2022-01-11 01:46:36,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 01:46:36,056 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:36,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash -1515272794, now seen corresponding path program 1 times [2022-01-11 01:46:36,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:36,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686332912] [2022-01-11 01:46:36,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:36,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:36,090 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 01:46:36,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:36,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686332912] [2022-01-11 01:46:36,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686332912] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:36,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:36,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:46:36,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992117264] [2022-01-11 01:46:36,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:36,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:46:36,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:36,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:46:36,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:46:36,093 INFO L87 Difference]: Start difference. First operand 1403 states and 1788 transitions. Second operand has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:36,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:36,296 INFO L93 Difference]: Finished difference Result 2673 states and 3434 transitions. [2022-01-11 01:46:36,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:46:36,297 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:36,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:36,300 INFO L225 Difference]: With dead ends: 2673 [2022-01-11 01:46:36,300 INFO L226 Difference]: Without dead ends: 1961 [2022-01-11 01:46:36,301 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 01:46:36,301 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1215 mSDsluCounter, 1534 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1215 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:36,302 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1215 Valid, 2174 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:36,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-01-11 01:46:36,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1409. [2022-01-11 01:46:36,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1409 states, 1407 states have (on average 1.2665245202558635) internal successors, (1782), 1408 states have internal predecessors, (1782), 0 states have call successors, (0), 0 states 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 01:46:36,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1409 states to 1409 states and 1782 transitions. [2022-01-11 01:46:36,395 INFO L78 Accepts]: Start accepts. Automaton has 1409 states and 1782 transitions. Word has length 77 [2022-01-11 01:46:36,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:36,395 INFO L470 AbstractCegarLoop]: Abstraction has 1409 states and 1782 transitions. [2022-01-11 01:46:36,395 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 5 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:36,395 INFO L276 IsEmpty]: Start isEmpty. Operand 1409 states and 1782 transitions. [2022-01-11 01:46:36,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-11 01:46:36,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:36,398 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] [2022-01-11 01:46:36,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 01:46:36,398 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:36,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:36,398 INFO L85 PathProgramCache]: Analyzing trace with hash 596017575, now seen corresponding path program 1 times [2022-01-11 01:46:36,398 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:36,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625326841] [2022-01-11 01:46:36,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:36,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:36,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:36,423 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 01:46:36,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:36,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625326841] [2022-01-11 01:46:36,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625326841] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:36,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:36,424 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:46:36,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249138980] [2022-01-11 01:46:36,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:36,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:36,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:36,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:36,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:36,424 INFO L87 Difference]: Start difference. First operand 1409 states and 1782 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:36,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:36,582 INFO L93 Difference]: Finished difference Result 2824 states and 3570 transitions. [2022-01-11 01:46:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:36,583 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 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 77 [2022-01-11 01:46:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:36,586 INFO L225 Difference]: With dead ends: 2824 [2022-01-11 01:46:36,586 INFO L226 Difference]: Without dead ends: 2080 [2022-01-11 01:46:36,587 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 01:46:36,588 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 540 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 540 SdHoareTripleChecker+Valid, 1067 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:36,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [540 Valid, 1067 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:36,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2080 states. [2022-01-11 01:46:36,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2080 to 2012. [2022-01-11 01:46:36,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2010 states have (on average 1.2611940298507462) internal successors, (2535), 2011 states have internal predecessors, (2535), 0 states have call successors, (0), 0 states 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 01:46:36,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2535 transitions. [2022-01-11 01:46:36,761 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2535 transitions. Word has length 77 [2022-01-11 01:46:36,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:36,761 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2535 transitions. [2022-01-11 01:46:36,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 2 states have internal predecessors, (77), 0 states have call successors, (0), 0 states 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 01:46:36,761 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2535 transitions. [2022-01-11 01:46:36,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-11 01:46:36,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:36,762 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:36,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 01:46:36,762 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:36,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:36,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1431008906, now seen corresponding path program 1 times [2022-01-11 01:46:36,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:36,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543978859] [2022-01-11 01:46:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:36,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:36,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:46:36,791 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:36,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543978859] [2022-01-11 01:46:36,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543978859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:36,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:36,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:36,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4290307] [2022-01-11 01:46:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:36,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:36,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:36,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:36,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:36,792 INFO L87 Difference]: Start difference. First operand 2012 states and 2535 transitions. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:46:36,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:36,939 INFO L93 Difference]: Finished difference Result 2666 states and 3362 transitions. [2022-01-11 01:46:36,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:36,939 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 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 84 [2022-01-11 01:46:36,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:36,942 INFO L225 Difference]: With dead ends: 2666 [2022-01-11 01:46:36,942 INFO L226 Difference]: Without dead ends: 2030 [2022-01-11 01:46:36,943 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 01:46:36,944 INFO L933 BasicCegarLoop]: 645 mSDtfsCounter, 573 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 729 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 01:46:36,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 729 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:36,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2030 states. [2022-01-11 01:46:37,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2030 to 2012. [2022-01-11 01:46:37,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2012 states, 2010 states have (on average 1.2512437810945274) internal successors, (2515), 2011 states have internal predecessors, (2515), 0 states have call successors, (0), 0 states 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 01:46:37,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2012 states to 2012 states and 2515 transitions. [2022-01-11 01:46:37,086 INFO L78 Accepts]: Start accepts. Automaton has 2012 states and 2515 transitions. Word has length 84 [2022-01-11 01:46:37,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:37,087 INFO L470 AbstractCegarLoop]: Abstraction has 2012 states and 2515 transitions. [2022-01-11 01:46:37,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states 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 01:46:37,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2012 states and 2515 transitions. [2022-01-11 01:46:37,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-11 01:46:37,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:37,088 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:46:37,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 01:46:37,088 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:37,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:37,089 INFO L85 PathProgramCache]: Analyzing trace with hash -462840288, now seen corresponding path program 1 times [2022-01-11 01:46:37,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:37,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110438506] [2022-01-11 01:46:37,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:37,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:37,113 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-11 01:46:37,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:37,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110438506] [2022-01-11 01:46:37,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110438506] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:37,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:37,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:37,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359208351] [2022-01-11 01:46:37,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:37,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:37,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:37,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:37,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:37,114 INFO L87 Difference]: Start difference. First operand 2012 states and 2515 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 01:46:37,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:37,223 INFO L93 Difference]: Finished difference Result 2276 states and 2833 transitions. [2022-01-11 01:46:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:37,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 85 [2022-01-11 01:46:37,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:37,226 INFO L225 Difference]: With dead ends: 2276 [2022-01-11 01:46:37,226 INFO L226 Difference]: Without dead ends: 1370 [2022-01-11 01:46:37,228 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 01:46:37,228 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 56 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:37,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1274 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:37,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1370 states. [2022-01-11 01:46:37,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1370 to 1370. [2022-01-11 01:46:37,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1369 states have (on average 1.2556610664718773) internal successors, (1719), 1369 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states 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 01:46:37,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 1719 transitions. [2022-01-11 01:46:37,308 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 1719 transitions. Word has length 85 [2022-01-11 01:46:37,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:37,308 INFO L470 AbstractCegarLoop]: Abstraction has 1370 states and 1719 transitions. [2022-01-11 01:46:37,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states 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 01:46:37,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 1719 transitions. [2022-01-11 01:46:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:46:37,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:37,310 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] [2022-01-11 01:46:37,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 01:46:37,310 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:37,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:37,310 INFO L85 PathProgramCache]: Analyzing trace with hash 328893201, now seen corresponding path program 1 times [2022-01-11 01:46:37,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:37,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473976283] [2022-01-11 01:46:37,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:37,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:37,339 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 01:46:37,339 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:37,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473976283] [2022-01-11 01:46:37,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473976283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:37,339 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:37,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:37,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258833552] [2022-01-11 01:46:37,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:37,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:37,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:37,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:37,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:37,340 INFO L87 Difference]: Start difference. First operand 1370 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:37,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:37,535 INFO L93 Difference]: Finished difference Result 3951 states and 4973 transitions. [2022-01-11 01:46:37,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:37,535 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:46:37,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:37,539 INFO L225 Difference]: With dead ends: 3951 [2022-01-11 01:46:37,539 INFO L226 Difference]: Without dead ends: 2610 [2022-01-11 01:46:37,540 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 01:46:37,541 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 451 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 963 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:37,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 963 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:37,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2610 states. [2022-01-11 01:46:37,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2610 to 2480. [2022-01-11 01:46:37,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2480 states, 2479 states have (on average 1.253327954820492) internal successors, (3107), 2479 states have internal predecessors, (3107), 0 states have call successors, (0), 0 states 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 01:46:37,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2480 states to 2480 states and 3107 transitions. [2022-01-11 01:46:37,683 INFO L78 Accepts]: Start accepts. Automaton has 2480 states and 3107 transitions. Word has length 124 [2022-01-11 01:46:37,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:37,683 INFO L470 AbstractCegarLoop]: Abstraction has 2480 states and 3107 transitions. [2022-01-11 01:46:37,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:37,684 INFO L276 IsEmpty]: Start isEmpty. Operand 2480 states and 3107 transitions. [2022-01-11 01:46:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:46:37,685 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:37,685 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] [2022-01-11 01:46:37,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 01:46:37,685 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:37,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash 876613170, now seen corresponding path program 1 times [2022-01-11 01:46:37,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:37,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994647563] [2022-01-11 01:46:37,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:37,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:37,712 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 01:46:37,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:37,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994647563] [2022-01-11 01:46:37,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994647563] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:37,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:37,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:37,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180859961] [2022-01-11 01:46:37,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:37,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:37,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:37,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:37,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:37,714 INFO L87 Difference]: Start difference. First operand 2480 states and 3107 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:38,014 INFO L93 Difference]: Finished difference Result 7213 states and 8980 transitions. [2022-01-11 01:46:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:38,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2022-01-11 01:46:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:38,044 INFO L225 Difference]: With dead ends: 7213 [2022-01-11 01:46:38,044 INFO L226 Difference]: Without dead ends: 4799 [2022-01-11 01:46:38,047 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 01:46:38,047 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 457 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:38,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 1167 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:38,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-01-11 01:46:38,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 4685. [2022-01-11 01:46:38,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4685 states, 4684 states have (on average 1.2339880444064901) internal successors, (5780), 4684 states have internal predecessors, (5780), 0 states have call successors, (0), 0 states 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 01:46:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4685 states to 4685 states and 5780 transitions. [2022-01-11 01:46:38,421 INFO L78 Accepts]: Start accepts. Automaton has 4685 states and 5780 transitions. Word has length 124 [2022-01-11 01:46:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:38,421 INFO L470 AbstractCegarLoop]: Abstraction has 4685 states and 5780 transitions. [2022-01-11 01:46:38,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 4685 states and 5780 transitions. [2022-01-11 01:46:38,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-01-11 01:46:38,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:38,424 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] [2022-01-11 01:46:38,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 01:46:38,425 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:38,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:38,425 INFO L85 PathProgramCache]: Analyzing trace with hash -573554481, now seen corresponding path program 1 times [2022-01-11 01:46:38,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:38,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083178936] [2022-01-11 01:46:38,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:38,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:38,448 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 01:46:38,448 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:38,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083178936] [2022-01-11 01:46:38,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083178936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:38,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:38,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:38,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058588363] [2022-01-11 01:46:38,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:38,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:38,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:38,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:38,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:38,450 INFO L87 Difference]: Start difference. First operand 4685 states and 5780 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:46:38,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:38,749 INFO L93 Difference]: Finished difference Result 9278 states and 11454 transitions. [2022-01-11 01:46:38,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:38,749 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 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 124 [2022-01-11 01:46:38,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:38,755 INFO L225 Difference]: With dead ends: 9278 [2022-01-11 01:46:38,755 INFO L226 Difference]: Without dead ends: 4626 [2022-01-11 01:46:38,759 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 01:46:38,759 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 527 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 527 SdHoareTripleChecker+Valid, 533 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 01:46:38,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [527 Valid, 533 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:38,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2022-01-11 01:46:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 4626. [2022-01-11 01:46:39,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 4625 states have (on average 1.235027027027027) internal successors, (5712), 4625 states have internal predecessors, (5712), 0 states have call successors, (0), 0 states 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 01:46:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 5712 transitions. [2022-01-11 01:46:39,037 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 5712 transitions. Word has length 124 [2022-01-11 01:46:39,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:39,037 INFO L470 AbstractCegarLoop]: Abstraction has 4626 states and 5712 transitions. [2022-01-11 01:46:39,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states 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 01:46:39,037 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 5712 transitions. [2022-01-11 01:46:39,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:46:39,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:39,039 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] [2022-01-11 01:46:39,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 01:46:39,040 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:39,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:39,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1756113559, now seen corresponding path program 1 times [2022-01-11 01:46:39,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:39,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013178745] [2022-01-11 01:46:39,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:39,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:39,072 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 01:46:39,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:39,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013178745] [2022-01-11 01:46:39,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013178745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:39,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:39,072 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:39,072 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896703954] [2022-01-11 01:46:39,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:39,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:39,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:39,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:39,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:39,073 INFO L87 Difference]: Start difference. First operand 4626 states and 5712 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:39,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:39,552 INFO L93 Difference]: Finished difference Result 13036 states and 16059 transitions. [2022-01-11 01:46:39,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:39,553 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2022-01-11 01:46:39,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:39,565 INFO L225 Difference]: With dead ends: 13036 [2022-01-11 01:46:39,565 INFO L226 Difference]: Without dead ends: 8476 [2022-01-11 01:46:39,571 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 01:46:39,571 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 354 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 354 SdHoareTripleChecker+Valid, 1207 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 01:46:39,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [354 Valid, 1207 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:39,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8476 states. [2022-01-11 01:46:40,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8476 to 8474. [2022-01-11 01:46:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8474 states, 8473 states have (on average 1.225185884574531) internal successors, (10381), 8473 states have internal predecessors, (10381), 0 states have call successors, (0), 0 states 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 01:46:40,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8474 states to 8474 states and 10381 transitions. [2022-01-11 01:46:40,084 INFO L78 Accepts]: Start accepts. Automaton has 8474 states and 10381 transitions. Word has length 125 [2022-01-11 01:46:40,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:40,085 INFO L470 AbstractCegarLoop]: Abstraction has 8474 states and 10381 transitions. [2022-01-11 01:46:40,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:40,085 INFO L276 IsEmpty]: Start isEmpty. Operand 8474 states and 10381 transitions. [2022-01-11 01:46:40,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-01-11 01:46:40,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:40,089 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] [2022-01-11 01:46:40,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 01:46:40,089 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -529867768, now seen corresponding path program 1 times [2022-01-11 01:46:40,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:40,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759412928] [2022-01-11 01:46:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:40,090 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:40,109 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 01:46:40,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:40,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759412928] [2022-01-11 01:46:40,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759412928] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:40,109 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:40,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:40,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833488335] [2022-01-11 01:46:40,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:40,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:40,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:40,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:40,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:40,110 INFO L87 Difference]: Start difference. First operand 8474 states and 10381 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:46:40,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:40,714 INFO L93 Difference]: Finished difference Result 16824 states and 20622 transitions. [2022-01-11 01:46:40,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:40,714 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 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 125 [2022-01-11 01:46:40,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:40,726 INFO L225 Difference]: With dead ends: 16824 [2022-01-11 01:46:40,726 INFO L226 Difference]: Without dead ends: 8416 [2022-01-11 01:46:40,735 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 01:46:40,736 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 525 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 525 SdHoareTripleChecker+Valid, 532 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 01:46:40,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [525 Valid, 532 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:40,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2022-01-11 01:46:41,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 8416. [2022-01-11 01:46:41,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8416 states, 8415 states have (on average 1.225787284610814) internal successors, (10315), 8415 states have internal predecessors, (10315), 0 states have call successors, (0), 0 states 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 01:46:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8416 states to 8416 states and 10315 transitions. [2022-01-11 01:46:41,293 INFO L78 Accepts]: Start accepts. Automaton has 8416 states and 10315 transitions. Word has length 125 [2022-01-11 01:46:41,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:41,293 INFO L470 AbstractCegarLoop]: Abstraction has 8416 states and 10315 transitions. [2022-01-11 01:46:41,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 0 states have call successors, (0), 0 states 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 01:46:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 8416 states and 10315 transitions. [2022-01-11 01:46:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:46:41,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:41,296 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] [2022-01-11 01:46:41,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 01:46:41,297 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:41,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1520287299, now seen corresponding path program 1 times [2022-01-11 01:46:41,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:41,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381335362] [2022-01-11 01:46:41,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:41,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:41,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:41,328 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 01:46:41,328 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:41,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381335362] [2022-01-11 01:46:41,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381335362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:41,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:41,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:41,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547993427] [2022-01-11 01:46:41,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:41,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:41,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:41,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:41,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:41,330 INFO L87 Difference]: Start difference. First operand 8416 states and 10315 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:42,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:42,249 INFO L93 Difference]: Finished difference Result 23805 states and 29148 transitions. [2022-01-11 01:46:42,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:42,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 126 [2022-01-11 01:46:42,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:42,265 INFO L225 Difference]: With dead ends: 23805 [2022-01-11 01:46:42,266 INFO L226 Difference]: Without dead ends: 15455 [2022-01-11 01:46:42,272 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 01:46:42,273 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 359 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:42,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [359 Valid, 1174 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:42,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15455 states. [2022-01-11 01:46:43,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15455 to 15453. [2022-01-11 01:46:43,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15453 states, 15452 states have (on average 1.219906808180171) internal successors, (18850), 15452 states have internal predecessors, (18850), 0 states have call successors, (0), 0 states 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 01:46:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15453 states to 15453 states and 18850 transitions. [2022-01-11 01:46:43,355 INFO L78 Accepts]: Start accepts. Automaton has 15453 states and 18850 transitions. Word has length 126 [2022-01-11 01:46:43,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:43,356 INFO L470 AbstractCegarLoop]: Abstraction has 15453 states and 18850 transitions. [2022-01-11 01:46:43,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:46:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 15453 states and 18850 transitions. [2022-01-11 01:46:43,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-01-11 01:46:43,361 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:43,361 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] [2022-01-11 01:46:43,361 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-11 01:46:43,361 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:43,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:43,362 INFO L85 PathProgramCache]: Analyzing trace with hash -294041508, now seen corresponding path program 1 times [2022-01-11 01:46:43,362 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:43,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150052264] [2022-01-11 01:46:43,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:43,362 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:43,382 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 01:46:43,383 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150052264] [2022-01-11 01:46:43,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150052264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:43,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:43,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:43,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367929795] [2022-01-11 01:46:43,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:43,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:43,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:43,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:43,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:43,384 INFO L87 Difference]: Start difference. First operand 15453 states and 18850 transitions. Second operand has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:46:44,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:44,425 INFO L93 Difference]: Finished difference Result 30783 states and 37563 transitions. [2022-01-11 01:46:44,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:44,425 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 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 126 [2022-01-11 01:46:44,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:44,444 INFO L225 Difference]: With dead ends: 30783 [2022-01-11 01:46:44,444 INFO L226 Difference]: Without dead ends: 15396 [2022-01-11 01:46:44,461 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 01:46:44,461 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 523 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 531 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 01:46:44,461 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 531 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:44,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15396 states. [2022-01-11 01:46:45,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15396 to 15396. [2022-01-11 01:46:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15396 states, 15395 states have (on average 1.2202663202338422) internal successors, (18786), 15395 states have internal predecessors, (18786), 0 states have call successors, (0), 0 states 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 01:46:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15396 states to 15396 states and 18786 transitions. [2022-01-11 01:46:45,508 INFO L78 Accepts]: Start accepts. Automaton has 15396 states and 18786 transitions. Word has length 126 [2022-01-11 01:46:45,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:45,508 INFO L470 AbstractCegarLoop]: Abstraction has 15396 states and 18786 transitions. [2022-01-11 01:46:45,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.333333333333336) internal successors, (118), 3 states have internal predecessors, (118), 0 states have call successors, (0), 0 states 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 01:46:45,508 INFO L276 IsEmpty]: Start isEmpty. Operand 15396 states and 18786 transitions. [2022-01-11 01:46:45,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:46:45,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:45,513 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] [2022-01-11 01:46:45,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-11 01:46:45,513 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:45,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:45,513 INFO L85 PathProgramCache]: Analyzing trace with hash -796034982, now seen corresponding path program 1 times [2022-01-11 01:46:45,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:45,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194253112] [2022-01-11 01:46:45,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:45,513 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:45,543 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 01:46:45,544 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:45,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194253112] [2022-01-11 01:46:45,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194253112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:45,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:45,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:45,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285961422] [2022-01-11 01:46:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:45,544 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:45,544 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:45,545 INFO L87 Difference]: Start difference. First operand 15396 states and 18786 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:46:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:47,376 INFO L93 Difference]: Finished difference Result 43584 states and 53105 transitions. [2022-01-11 01:46:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:47,377 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 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 127 [2022-01-11 01:46:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:47,410 INFO L225 Difference]: With dead ends: 43584 [2022-01-11 01:46:47,410 INFO L226 Difference]: Without dead ends: 28254 [2022-01-11 01:46:47,423 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 01:46:47,424 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 456 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 456 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:47,424 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [456 Valid, 1096 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:47,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28254 states. [2022-01-11 01:46:49,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28254 to 27996. [2022-01-11 01:46:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27996 states, 27995 states have (on average 1.2161814609751742) internal successors, (34047), 27995 states have internal predecessors, (34047), 0 states have call successors, (0), 0 states 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 01:46:49,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27996 states to 27996 states and 34047 transitions. [2022-01-11 01:46:49,331 INFO L78 Accepts]: Start accepts. Automaton has 27996 states and 34047 transitions. Word has length 127 [2022-01-11 01:46:49,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:49,331 INFO L470 AbstractCegarLoop]: Abstraction has 27996 states and 34047 transitions. [2022-01-11 01:46:49,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 0 states have call successors, (0), 0 states 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 01:46:49,332 INFO L276 IsEmpty]: Start isEmpty. Operand 27996 states and 34047 transitions. [2022-01-11 01:46:49,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-11 01:46:49,340 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:49,340 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] [2022-01-11 01:46:49,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-11 01:46:49,340 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:49,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:49,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1688508091, now seen corresponding path program 1 times [2022-01-11 01:46:49,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:49,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629204712] [2022-01-11 01:46:49,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:49,341 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:49,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:49,359 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 01:46:49,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:49,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629204712] [2022-01-11 01:46:49,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629204712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:49,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:49,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:49,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36582426] [2022-01-11 01:46:49,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:49,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:49,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:49,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:49,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:49,360 INFO L87 Difference]: Start difference. First operand 27996 states and 34047 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:46:51,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:51,145 INFO L93 Difference]: Finished difference Result 55882 states and 67972 transitions. [2022-01-11 01:46:51,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:51,145 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 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 127 [2022-01-11 01:46:51,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:51,189 INFO L225 Difference]: With dead ends: 55882 [2022-01-11 01:46:51,189 INFO L226 Difference]: Without dead ends: 27940 [2022-01-11 01:46:51,218 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 01:46:51,219 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 521 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 521 SdHoareTripleChecker+Valid, 530 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 01:46:51,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [521 Valid, 530 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:51,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27940 states. [2022-01-11 01:46:53,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27940 to 27940. [2022-01-11 01:46:53,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27940 states, 27939 states have (on average 1.2164000143169047) internal successors, (33985), 27939 states have internal predecessors, (33985), 0 states have call successors, (0), 0 states 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 01:46:53,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27940 states to 27940 states and 33985 transitions. [2022-01-11 01:46:53,390 INFO L78 Accepts]: Start accepts. Automaton has 27940 states and 33985 transitions. Word has length 127 [2022-01-11 01:46:53,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:53,390 INFO L470 AbstractCegarLoop]: Abstraction has 27940 states and 33985 transitions. [2022-01-11 01:46:53,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states 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 01:46:53,390 INFO L276 IsEmpty]: Start isEmpty. Operand 27940 states and 33985 transitions. [2022-01-11 01:46:53,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-11 01:46:53,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:53,397 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] [2022-01-11 01:46:53,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-11 01:46:53,397 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:53,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:53,397 INFO L85 PathProgramCache]: Analyzing trace with hash 196656719, now seen corresponding path program 1 times [2022-01-11 01:46:53,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:53,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75554052] [2022-01-11 01:46:53,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:53,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:46:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:46:53,428 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 01:46:53,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:46:53,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75554052] [2022-01-11 01:46:53,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75554052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:46:53,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:46:53,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:46:53,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976028535] [2022-01-11 01:46:53,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:46:53,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:46:53,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:46:53,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:46:53,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:53,429 INFO L87 Difference]: Start difference. First operand 27940 states and 33985 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:46:56,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:46:56,875 INFO L93 Difference]: Finished difference Result 80706 states and 98067 transitions. [2022-01-11 01:46:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:46:56,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 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 128 [2022-01-11 01:46:56,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:46:56,926 INFO L225 Difference]: With dead ends: 80706 [2022-01-11 01:46:56,926 INFO L226 Difference]: Without dead ends: 40508 [2022-01-11 01:46:56,949 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:46:56,950 INFO L933 BasicCegarLoop]: 975 mSDtfsCounter, 452 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 452 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:46:56,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [452 Valid, 1490 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:46:56,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40508 states. [2022-01-11 01:46:59,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40508 to 40508. [2022-01-11 01:46:59,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40508 states, 40507 states have (on average 1.2113461870787765) internal successors, (49068), 40507 states have internal predecessors, (49068), 0 states have call successors, (0), 0 states 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 01:46:59,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40508 states to 40508 states and 49068 transitions. [2022-01-11 01:46:59,970 INFO L78 Accepts]: Start accepts. Automaton has 40508 states and 49068 transitions. Word has length 128 [2022-01-11 01:46:59,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:46:59,971 INFO L470 AbstractCegarLoop]: Abstraction has 40508 states and 49068 transitions. [2022-01-11 01:46:59,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 0 states have call successors, (0), 0 states 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 01:46:59,971 INFO L276 IsEmpty]: Start isEmpty. Operand 40508 states and 49068 transitions. [2022-01-11 01:46:59,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-11 01:46:59,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:46:59,989 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] [2022-01-11 01:46:59,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-11 01:46:59,989 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:46:59,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:46:59,990 INFO L85 PathProgramCache]: Analyzing trace with hash 559800921, now seen corresponding path program 1 times [2022-01-11 01:46:59,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:46:59,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355510555] [2022-01-11 01:46:59,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:46:59,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:47:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:47:00,029 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 01:47:00,029 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:47:00,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355510555] [2022-01-11 01:47:00,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355510555] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:47:00,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:47:00,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 01:47:00,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134201188] [2022-01-11 01:47:00,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:47:00,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:47:00,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:47:00,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:47:00,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:47:00,031 INFO L87 Difference]: Start difference. First operand 40508 states and 49068 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:47:03,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:47:03,706 INFO L93 Difference]: Finished difference Result 93366 states and 112946 transitions. [2022-01-11 01:47:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:47:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 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 165 [2022-01-11 01:47:03,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:47:03,779 INFO L225 Difference]: With dead ends: 93366 [2022-01-11 01:47:03,779 INFO L226 Difference]: Without dead ends: 52907 [2022-01-11 01:47:03,808 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 01:47:03,808 INFO L933 BasicCegarLoop]: 519 mSDtfsCounter, 335 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:47:03,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [335 Valid, 958 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:47:03,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52907 states. [2022-01-11 01:47:07,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52907 to 52715. [2022-01-11 01:47:07,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52715 states, 52714 states have (on average 1.2039685851955837) internal successors, (63466), 52714 states have internal predecessors, (63466), 0 states have call successors, (0), 0 states 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 01:47:07,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52715 states to 52715 states and 63466 transitions. [2022-01-11 01:47:07,511 INFO L78 Accepts]: Start accepts. Automaton has 52715 states and 63466 transitions. Word has length 165 [2022-01-11 01:47:07,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:47:07,511 INFO L470 AbstractCegarLoop]: Abstraction has 52715 states and 63466 transitions. [2022-01-11 01:47:07,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 2 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:47:07,511 INFO L276 IsEmpty]: Start isEmpty. Operand 52715 states and 63466 transitions. [2022-01-11 01:47:07,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-11 01:47:07,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:47:07,535 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:47:07,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-11 01:47:07,535 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:47:07,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:47:07,535 INFO L85 PathProgramCache]: Analyzing trace with hash -470301814, now seen corresponding path program 1 times [2022-01-11 01:47:07,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:47:07,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302096227] [2022-01-11 01:47:07,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:47:07,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:47:07,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:47:07,574 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-01-11 01:47:07,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:47:07,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302096227] [2022-01-11 01:47:07,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302096227] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:47:07,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:47:07,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:47:07,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226924472] [2022-01-11 01:47:07,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:47:07,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:47:07,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:47:07,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:47:07,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:47:07,576 INFO L87 Difference]: Start difference. First operand 52715 states and 63466 transitions. Second operand has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:47:11,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:47:11,281 INFO L93 Difference]: Finished difference Result 104465 states and 125519 transitions. [2022-01-11 01:47:11,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:47:11,282 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 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 184 [2022-01-11 01:47:11,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:47:11,360 INFO L225 Difference]: With dead ends: 104465 [2022-01-11 01:47:11,360 INFO L226 Difference]: Without dead ends: 51815 [2022-01-11 01:47:11,395 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 01:47:11,396 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 376 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 983 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:47:11,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 983 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:47:11,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51815 states. [2022-01-11 01:47:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51815 to 51815. [2022-01-11 01:47:15,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.186590496776933) internal successors, (61482), 51814 states have internal predecessors, (61482), 0 states have call successors, (0), 0 states 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 01:47:15,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 61482 transitions. [2022-01-11 01:47:15,270 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 61482 transitions. Word has length 184 [2022-01-11 01:47:15,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:47:15,271 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 61482 transitions. [2022-01-11 01:47:15,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.0) internal successors, (165), 3 states have internal predecessors, (165), 0 states have call successors, (0), 0 states 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 01:47:15,271 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 61482 transitions. [2022-01-11 01:47:15,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:47:15,292 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:47:15,292 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:47:15,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-11 01:47:15,292 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:47:15,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:47:15,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1520719323, now seen corresponding path program 1 times [2022-01-11 01:47:15,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:47:15,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685662033] [2022-01-11 01:47:15,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:47:15,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:47:15,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:47:15,331 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:47:15,331 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:47:15,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685662033] [2022-01-11 01:47:15,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685662033] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:47:15,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:47:15,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:47:15,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565227105] [2022-01-11 01:47:15,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:47:15,332 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:47:15,332 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:47:15,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:47:15,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:47:15,333 INFO L87 Difference]: Start difference. First operand 51815 states and 61482 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:47:19,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:47:19,038 INFO L93 Difference]: Finished difference Result 91539 states and 108888 transitions. [2022-01-11 01:47:19,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:47:19,039 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-01-11 01:47:19,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:47:19,111 INFO L225 Difference]: With dead ends: 91539 [2022-01-11 01:47:19,111 INFO L226 Difference]: Without dead ends: 51817 [2022-01-11 01:47:19,136 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 01:47:19,137 INFO L933 BasicCegarLoop]: 899 mSDtfsCounter, 379 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 379 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:47:19,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [379 Valid, 1405 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:47:19,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51817 states. [2022-01-11 01:47:22,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51817 to 51815. [2022-01-11 01:47:22,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.184506118037596) internal successors, (61374), 51814 states have internal predecessors, (61374), 0 states have call successors, (0), 0 states 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 01:47:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 61374 transitions. [2022-01-11 01:47:22,850 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 61374 transitions. Word has length 185 [2022-01-11 01:47:22,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:47:22,851 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 61374 transitions. [2022-01-11 01:47:22,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:47:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 61374 transitions. [2022-01-11 01:47:22,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-11 01:47:22,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:47:22,874 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:47:22,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-11 01:47:22,874 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:47:22,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:47:22,874 INFO L85 PathProgramCache]: Analyzing trace with hash -136224691, now seen corresponding path program 1 times [2022-01-11 01:47:22,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:47:22,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210945125] [2022-01-11 01:47:22,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:47:22,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:47:22,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:47:22,907 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 01:47:22,907 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:47:22,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210945125] [2022-01-11 01:47:22,907 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210945125] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:47:22,907 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:47:22,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 01:47:22,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769134549] [2022-01-11 01:47:22,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:47:22,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 01:47:22,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:47:22,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 01:47:22,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 01:47:22,908 INFO L87 Difference]: Start difference. First operand 51815 states and 61374 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:47:26,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:47:26,831 INFO L93 Difference]: Finished difference Result 91665 states and 108799 transitions. [2022-01-11 01:47:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 01:47:26,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 185 [2022-01-11 01:47:26,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:47:26,907 INFO L225 Difference]: With dead ends: 91665 [2022-01-11 01:47:26,907 INFO L226 Difference]: Without dead ends: 51943 [2022-01-11 01:47:26,941 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 01:47:26,942 INFO L933 BasicCegarLoop]: 892 mSDtfsCounter, 412 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 412 SdHoareTripleChecker+Valid, 1334 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:47:26,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [412 Valid, 1334 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:47:26,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51943 states. [2022-01-11 01:47:30,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51943 to 51815. [2022-01-11 01:47:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51815 states, 51814 states have (on average 1.167522291272629) internal successors, (60494), 51814 states have internal predecessors, (60494), 0 states have call successors, (0), 0 states 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 01:47:30,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51815 states to 51815 states and 60494 transitions. [2022-01-11 01:47:30,977 INFO L78 Accepts]: Start accepts. Automaton has 51815 states and 60494 transitions. Word has length 185 [2022-01-11 01:47:30,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 01:47:30,978 INFO L470 AbstractCegarLoop]: Abstraction has 51815 states and 60494 transitions. [2022-01-11 01:47:30,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 01:47:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 51815 states and 60494 transitions. [2022-01-11 01:47:30,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-11 01:47:30,999 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 01:47:30,999 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 01:47:30,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-11 01:47:30,999 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 01:47:31,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 01:47:31,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1874450956, now seen corresponding path program 1 times [2022-01-11 01:47:31,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 01:47:31,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206821997] [2022-01-11 01:47:31,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 01:47:31,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 01:47:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 01:47:31,042 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-01-11 01:47:31,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 01:47:31,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206821997] [2022-01-11 01:47:31,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206821997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 01:47:31,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 01:47:31,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 01:47:31,043 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752754417] [2022-01-11 01:47:31,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 01:47:31,043 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 01:47:31,043 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 01:47:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 01:47:31,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 01:47:31,043 INFO L87 Difference]: Start difference. First operand 51815 states and 60494 transitions. Second operand has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 0 states 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 01:47:35,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 01:47:35,753 INFO L93 Difference]: Finished difference Result 110241 states and 128898 transitions. [2022-01-11 01:47:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 01:47:35,753 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 32.2) internal successors, (161), 5 states have internal predecessors, (161), 0 states have call successors, (0), 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 187 [2022-01-11 01:47:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 01:47:35,840 INFO L225 Difference]: With dead ends: 110241 [2022-01-11 01:47:35,840 INFO L226 Difference]: Without dead ends: 58459 [2022-01-11 01:47:35,880 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 01:47:35,881 INFO L933 BasicCegarLoop]: 494 mSDtfsCounter, 1371 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1371 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 01:47:35,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1371 Valid, 1184 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 01:47:35,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58459 states.