/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:36:59,004 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:36:59,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:36:59,055 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:36:59,055 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:36:59,057 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:36:59,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:36:59,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:36:59,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:36:59,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:36:59,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:36:59,067 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:36:59,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:36:59,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:36:59,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:36:59,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:36:59,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:36:59,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:36:59,071 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:36:59,072 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:36:59,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:36:59,079 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:36:59,082 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:36:59,083 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:36:59,086 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 01:36:59,086 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 01:36:59,086 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 01:36:59,087 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 01:36:59,087 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 01:36:59,087 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 01:36:59,088 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 01:36:59,088 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 01:36:59,088 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 01:36:59,089 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 01:36:59,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 01:36:59,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 01:36:59,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 01:36:59,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 01:36:59,090 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:36:59,091 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:36:59,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:36:59,092 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:36:59,116 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:36:59,116 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:36:59,116 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:36:59,117 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:36:59,117 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:36:59,117 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:36:59,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:36:59,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:36:59,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:36:59,119 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:36:59,119 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:36:59,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:36:59,121 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:36:59,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:36:59,122 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:36:59,122 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:36:59,122 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:36:59,123 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:36:59,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:36:59,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:36:59,124 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:36:59,124 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:36:59,125 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:36:59,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:36:59,125 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:36:59,273 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:36:59,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:36:59,289 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:36:59,290 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:36:59,291 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:36:59,291 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:36:59,330 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b81d889/3c34db64275f4d46a5cada89f64c98c0/FLAGf3bf7715f [2022-01-10 01:36:59,692 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:36:59,693 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:36:59,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b81d889/3c34db64275f4d46a5cada89f64c98c0/FLAGf3bf7715f [2022-01-10 01:36:59,707 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d1b81d889/3c34db64275f4d46a5cada89f64c98c0 [2022-01-10 01:36:59,708 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:36:59,709 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:36:59,710 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:36:59,710 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:36:59,712 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:36:59,713 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:36:59" (1/1) ... [2022-01-10 01:36:59,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b38cf68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:36:59, skipping insertion in model container [2022-01-10 01:36:59,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:36:59" (1/1) ... [2022-01-10 01:36:59,717 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:36:59,740 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:36:59,911 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2022-01-10 01:36:59,918 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2022-01-10 01:36:59,923 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:36:59,930 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:36:59,958 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[6874,6887] [2022-01-10 01:36:59,980 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c[9049,9062] [2022-01-10 01:36:59,999 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:37:00,017 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:37:00,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00 WrapperNode [2022-01-10 01:37:00,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:37:00,018 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:37:00,018 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:37:00,018 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:37:00,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,029 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,053 INFO L137 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 445 [2022-01-10 01:37:00,054 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:37:00,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:37:00,054 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:37:00,054 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:37:00,060 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,060 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,069 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,070 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,074 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,078 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,097 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:37:00,098 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:37:00,098 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:37:00,098 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:37:00,112 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (1/1) ... [2022-01-10 01:37:00,118 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:37:00,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:37:00,141 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:37:00,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:37:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:37:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:37:00,165 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:37:00,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:37:00,237 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:37:00,238 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:37:00,507 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:37:00,512 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:37:00,512 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-10 01:37:00,513 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:37:00 BoogieIcfgContainer [2022-01-10 01:37:00,514 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:37:00,515 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:37:00,515 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:37:00,528 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:37:00,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:36:59" (1/3) ... [2022-01-10 01:37:00,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d1a88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:37:00, skipping insertion in model container [2022-01-10 01:37:00,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:37:00" (2/3) ... [2022-01-10 01:37:00,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56d1a88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:37:00, skipping insertion in model container [2022-01-10 01:37:00,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:37:00" (3/3) ... [2022-01-10 01:37:00,530 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2022-01-10 01:37:00,533 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:37:00,534 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 01:37:00,576 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:37:00,580 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:37:00,580 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 01:37:00,593 INFO L276 IsEmpty]: Start isEmpty. Operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:00,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-01-10 01:37:00,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:00,608 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] [2022-01-10 01:37:00,608 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:00,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:00,612 INFO L85 PathProgramCache]: Analyzing trace with hash -1096512752, now seen corresponding path program 1 times [2022-01-10 01:37:00,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:00,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969170464] [2022-01-10 01:37:00,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:00,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:00,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:00,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:00,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:00,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969170464] [2022-01-10 01:37:00,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969170464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:00,916 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:00,916 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:37:00,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220412076] [2022-01-10 01:37:00,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:00,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:00,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:00,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:00,941 INFO L87 Difference]: Start difference. First operand has 106 states, 103 states have (on average 1.7475728155339805) internal successors, (180), 105 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:01,152 INFO L93 Difference]: Finished difference Result 422 states and 668 transitions. [2022-01-10 01:37:01,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 01:37:01,154 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 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 47 [2022-01-10 01:37:01,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:01,162 INFO L225 Difference]: With dead ends: 422 [2022-01-10 01:37:01,162 INFO L226 Difference]: Without dead ends: 358 [2022-01-10 01:37:01,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:37:01,167 INFO L933 BasicCegarLoop]: 292 mSDtfsCounter, 596 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:01,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 775 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:37:01,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-01-10 01:37:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 156. [2022-01-10 01:37:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 154 states have (on average 1.4415584415584415) internal successors, (222), 155 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 222 transitions. [2022-01-10 01:37:01,237 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 222 transitions. Word has length 47 [2022-01-10 01:37:01,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:01,238 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 222 transitions. [2022-01-10 01:37:01,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,238 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 222 transitions. [2022-01-10 01:37:01,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2022-01-10 01:37:01,239 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:01,239 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] [2022-01-10 01:37:01,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:37:01,240 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:01,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:01,241 INFO L85 PathProgramCache]: Analyzing trace with hash 191283016, now seen corresponding path program 1 times [2022-01-10 01:37:01,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:01,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323509221] [2022-01-10 01:37:01,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:01,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:01,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:01,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:01,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:01,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323509221] [2022-01-10 01:37:01,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323509221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:01,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:01,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:01,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623813545] [2022-01-10 01:37:01,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:01,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:01,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:01,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:01,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:01,342 INFO L87 Difference]: Start difference. First operand 156 states and 222 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:01,389 INFO L93 Difference]: Finished difference Result 247 states and 359 transitions. [2022-01-10 01:37:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:01,389 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 48 [2022-01-10 01:37:01,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:01,391 INFO L225 Difference]: With dead ends: 247 [2022-01-10 01:37:01,391 INFO L226 Difference]: Without dead ends: 160 [2022-01-10 01:37:01,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:01,396 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 75 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:01,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 305 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:01,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-01-10 01:37:01,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2022-01-10 01:37:01,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 156 states have (on average 1.4294871794871795) internal successors, (223), 157 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 223 transitions. [2022-01-10 01:37:01,415 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 223 transitions. Word has length 48 [2022-01-10 01:37:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:01,416 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 223 transitions. [2022-01-10 01:37:01,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,416 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 223 transitions. [2022-01-10 01:37:01,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:37:01,417 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:01,417 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] [2022-01-10 01:37:01,417 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:37:01,417 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:01,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:01,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1589815569, now seen corresponding path program 1 times [2022-01-10 01:37:01,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:01,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618025684] [2022-01-10 01:37:01,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:01,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:01,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:01,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:01,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618025684] [2022-01-10 01:37:01,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618025684] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:01,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:01,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:37:01,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140996764] [2022-01-10 01:37:01,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:01,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:01,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:01,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:01,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:01,546 INFO L87 Difference]: Start difference. First operand 158 states and 223 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:01,624 INFO L93 Difference]: Finished difference Result 478 states and 707 transitions. [2022-01-10 01:37:01,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:01,624 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 01:37:01,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:01,626 INFO L225 Difference]: With dead ends: 478 [2022-01-10 01:37:01,626 INFO L226 Difference]: Without dead ends: 394 [2022-01-10 01:37:01,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:01,632 INFO L933 BasicCegarLoop]: 262 mSDtfsCounter, 304 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:01,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 542 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-10 01:37:01,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 251. [2022-01-10 01:37:01,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 249 states have (on average 1.4698795180722892) internal successors, (366), 250 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 366 transitions. [2022-01-10 01:37:01,652 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 366 transitions. Word has length 49 [2022-01-10 01:37:01,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:01,653 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 366 transitions. [2022-01-10 01:37:01,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,654 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 366 transitions. [2022-01-10 01:37:01,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:37:01,659 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:01,659 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] [2022-01-10 01:37:01,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 01:37:01,659 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:01,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:01,660 INFO L85 PathProgramCache]: Analyzing trace with hash 727047131, now seen corresponding path program 1 times [2022-01-10 01:37:01,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:01,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210191935] [2022-01-10 01:37:01,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:01,661 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:01,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:01,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:01,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:01,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210191935] [2022-01-10 01:37:01,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210191935] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:01,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:01,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:37:01,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414262640] [2022-01-10 01:37:01,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:01,749 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:01,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:01,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:01,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:01,749 INFO L87 Difference]: Start difference. First operand 251 states and 366 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:01,841 INFO L93 Difference]: Finished difference Result 566 states and 842 transitions. [2022-01-10 01:37:01,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:01,841 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 01:37:01,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:01,843 INFO L225 Difference]: With dead ends: 566 [2022-01-10 01:37:01,843 INFO L226 Difference]: Without dead ends: 482 [2022-01-10 01:37:01,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:01,850 INFO L933 BasicCegarLoop]: 209 mSDtfsCounter, 358 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:01,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [358 Valid, 564 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:37:01,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-01-10 01:37:01,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 382. [2022-01-10 01:37:01,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 380 states have (on average 1.4894736842105263) internal successors, (566), 381 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 566 transitions. [2022-01-10 01:37:01,871 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 566 transitions. Word has length 49 [2022-01-10 01:37:01,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:01,872 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 566 transitions. [2022-01-10 01:37:01,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:01,872 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 566 transitions. [2022-01-10 01:37:01,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-01-10 01:37:01,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:01,874 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] [2022-01-10 01:37:01,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 01:37:01,874 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:01,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:01,875 INFO L85 PathProgramCache]: Analyzing trace with hash 118541383, now seen corresponding path program 1 times [2022-01-10 01:37:01,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:01,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165969145] [2022-01-10 01:37:01,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:01,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:01,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:01,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:01,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165969145] [2022-01-10 01:37:01,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165969145] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:01,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:01,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:37:01,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707251050] [2022-01-10 01:37:01,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:01,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:01,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:01,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:01,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:01,935 INFO L87 Difference]: Start difference. First operand 382 states and 566 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:02,013 INFO L93 Difference]: Finished difference Result 659 states and 985 transitions. [2022-01-10 01:37:02,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:02,013 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 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 49 [2022-01-10 01:37:02,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:02,016 INFO L225 Difference]: With dead ends: 659 [2022-01-10 01:37:02,016 INFO L226 Difference]: Without dead ends: 575 [2022-01-10 01:37:02,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:02,018 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 367 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 367 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:02,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [367 Valid, 560 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:02,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 575 states. [2022-01-10 01:37:02,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 575 to 475. [2022-01-10 01:37:02,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4989429175475688) internal successors, (709), 474 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 709 transitions. [2022-01-10 01:37:02,044 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 709 transitions. Word has length 49 [2022-01-10 01:37:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:02,045 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 709 transitions. [2022-01-10 01:37:02,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 709 transitions. [2022-01-10 01:37:02,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-01-10 01:37:02,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:02,046 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] [2022-01-10 01:37:02,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 01:37:02,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:02,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:02,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2078764873, now seen corresponding path program 1 times [2022-01-10 01:37:02,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:02,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387112152] [2022-01-10 01:37:02,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:02,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:02,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:02,115 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:02,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387112152] [2022-01-10 01:37:02,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387112152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:02,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:02,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:37:02,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551266885] [2022-01-10 01:37:02,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:02,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:02,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:02,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:02,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:02,117 INFO L87 Difference]: Start difference. First operand 475 states and 709 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:02,211 INFO L93 Difference]: Finished difference Result 928 states and 1395 transitions. [2022-01-10 01:37:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:02,212 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 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 50 [2022-01-10 01:37:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:02,213 INFO L225 Difference]: With dead ends: 928 [2022-01-10 01:37:02,213 INFO L226 Difference]: Without dead ends: 475 [2022-01-10 01:37:02,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:02,215 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 380 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:02,215 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 82 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:02,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-01-10 01:37:02,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-01-10 01:37:02,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.477801268498943) internal successors, (699), 474 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 699 transitions. [2022-01-10 01:37:02,248 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 699 transitions. Word has length 50 [2022-01-10 01:37:02,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:02,248 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 699 transitions. [2022-01-10 01:37:02,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,249 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 699 transitions. [2022-01-10 01:37:02,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-01-10 01:37:02,249 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:02,249 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] [2022-01-10 01:37:02,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 01:37:02,249 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:02,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:02,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1832903282, now seen corresponding path program 1 times [2022-01-10 01:37:02,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:02,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621627216] [2022-01-10 01:37:02,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:02,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:02,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:02,304 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:02,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621627216] [2022-01-10 01:37:02,304 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621627216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:02,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:02,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:37:02,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566781] [2022-01-10 01:37:02,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:02,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:02,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:02,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:02,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:02,305 INFO L87 Difference]: Start difference. First operand 475 states and 699 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-01-10 01:37:02,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:02,390 INFO L93 Difference]: Finished difference Result 924 states and 1371 transitions. [2022-01-10 01:37:02,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:02,390 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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 [2022-01-10 01:37:02,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:02,392 INFO L225 Difference]: With dead ends: 924 [2022-01-10 01:37:02,392 INFO L226 Difference]: Without dead ends: 475 [2022-01-10 01:37:02,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:02,394 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 362 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:02,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 90 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:02,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-01-10 01:37:02,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-01-10 01:37:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4566596194503172) internal successors, (689), 474 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 689 transitions. [2022-01-10 01:37:02,423 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 689 transitions. Word has length 51 [2022-01-10 01:37:02,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:02,424 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 689 transitions. [2022-01-10 01:37:02,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 4 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) [2022-01-10 01:37:02,424 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 689 transitions. [2022-01-10 01:37:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-01-10 01:37:02,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:02,425 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] [2022-01-10 01:37:02,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 01:37:02,425 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:02,426 INFO L85 PathProgramCache]: Analyzing trace with hash 1624812893, now seen corresponding path program 1 times [2022-01-10 01:37:02,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:02,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791533737] [2022-01-10 01:37:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:02,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:02,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:02,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:02,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791533737] [2022-01-10 01:37:02,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791533737] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:02,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:02,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 01:37:02,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378261800] [2022-01-10 01:37:02,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:02,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:37:02,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:02,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:37:02,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:37:02,483 INFO L87 Difference]: Start difference. First operand 475 states and 689 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:02,597 INFO L93 Difference]: Finished difference Result 920 states and 1347 transitions. [2022-01-10 01:37:02,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 01:37:02,598 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 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 52 [2022-01-10 01:37:02,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:02,599 INFO L225 Difference]: With dead ends: 920 [2022-01-10 01:37:02,599 INFO L226 Difference]: Without dead ends: 475 [2022-01-10 01:37:02,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:37:02,600 INFO L933 BasicCegarLoop]: 78 mSDtfsCounter, 344 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:02,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [344 Valid, 98 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 475 states. [2022-01-10 01:37:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 475 to 475. [2022-01-10 01:37:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4355179704016914) internal successors, (679), 474 states have internal predecessors, (679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 679 transitions. [2022-01-10 01:37:02,632 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 679 transitions. Word has length 52 [2022-01-10 01:37:02,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:02,633 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 679 transitions. [2022-01-10 01:37:02,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 679 transitions. [2022-01-10 01:37:02,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 01:37:02,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:02,634 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] [2022-01-10 01:37:02,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 01:37:02,636 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:02,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:02,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1423750650, now seen corresponding path program 1 times [2022-01-10 01:37:02,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:02,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521130370] [2022-01-10 01:37:02,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:02,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:02,844 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:02,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521130370] [2022-01-10 01:37:02,844 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521130370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:02,844 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:02,844 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:37:02,844 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507691107] [2022-01-10 01:37:02,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:02,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:37:02,844 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:02,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:37:02,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:37:02,845 INFO L87 Difference]: Start difference. First operand 475 states and 679 transitions. Second operand has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:03,323 INFO L93 Difference]: Finished difference Result 1299 states and 1873 transitions. [2022-01-10 01:37:03,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 01:37:03,323 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 01:37:03,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:03,327 INFO L225 Difference]: With dead ends: 1299 [2022-01-10 01:37:03,327 INFO L226 Difference]: Without dead ends: 901 [2022-01-10 01:37:03,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:37:03,329 INFO L933 BasicCegarLoop]: 73 mSDtfsCounter, 738 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:03,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 374 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:37:03,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 901 states. [2022-01-10 01:37:03,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 901 to 475. [2022-01-10 01:37:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.427061310782241) internal successors, (675), 474 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 675 transitions. [2022-01-10 01:37:03,374 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 675 transitions. Word has length 53 [2022-01-10 01:37:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:03,374 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 675 transitions. [2022-01-10 01:37:03,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.076923076923077) internal successors, (53), 12 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 675 transitions. [2022-01-10 01:37:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-01-10 01:37:03,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:03,375 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] [2022-01-10 01:37:03,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 01:37:03,375 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:03,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:03,375 INFO L85 PathProgramCache]: Analyzing trace with hash 232050318, now seen corresponding path program 1 times [2022-01-10 01:37:03,375 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:03,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975386385] [2022-01-10 01:37:03,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:03,376 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:03,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:03,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:03,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:03,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975386385] [2022-01-10 01:37:03,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975386385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:03,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:03,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 01:37:03,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44052835] [2022-01-10 01:37:03,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:03,504 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 01:37:03,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:03,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 01:37:03,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:37:03,505 INFO L87 Difference]: Start difference. First operand 475 states and 675 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:03,884 INFO L93 Difference]: Finished difference Result 1286 states and 1857 transitions. [2022-01-10 01:37:03,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:37:03,885 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 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 53 [2022-01-10 01:37:03,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:03,887 INFO L225 Difference]: With dead ends: 1286 [2022-01-10 01:37:03,887 INFO L226 Difference]: Without dead ends: 873 [2022-01-10 01:37:03,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-10 01:37:03,889 INFO L933 BasicCegarLoop]: 108 mSDtfsCounter, 732 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 732 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:03,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [732 Valid, 297 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 01:37:03,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2022-01-10 01:37:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 475. [2022-01-10 01:37:03,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4249471458773784) internal successors, (674), 474 states have internal predecessors, (674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 674 transitions. [2022-01-10 01:37:03,941 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 674 transitions. Word has length 53 [2022-01-10 01:37:03,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:03,941 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 674 transitions. [2022-01-10 01:37:03,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:03,941 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 674 transitions. [2022-01-10 01:37:03,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-01-10 01:37:03,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:03,942 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] [2022-01-10 01:37:03,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 01:37:03,942 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 563944451, now seen corresponding path program 1 times [2022-01-10 01:37:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:03,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537842209] [2022-01-10 01:37:03,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:03,943 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:03,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:04,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:04,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537842209] [2022-01-10 01:37:04,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537842209] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:04,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:04,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-01-10 01:37:04,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677461623] [2022-01-10 01:37:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:04,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:37:04,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:04,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:37:04,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:37:04,133 INFO L87 Difference]: Start difference. First operand 475 states and 674 transitions. Second operand has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:04,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:04,956 INFO L93 Difference]: Finished difference Result 1620 states and 2320 transitions. [2022-01-10 01:37:04,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:37:04,957 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 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 54 [2022-01-10 01:37:04,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:04,960 INFO L225 Difference]: With dead ends: 1620 [2022-01-10 01:37:04,960 INFO L226 Difference]: Without dead ends: 1212 [2022-01-10 01:37:04,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=164, Invalid=486, Unknown=0, NotChecked=0, Total=650 [2022-01-10 01:37:04,961 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 654 mSDsluCounter, 477 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 623 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:04,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 623 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:37:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2022-01-10 01:37:05,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 475. [2022-01-10 01:37:05,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 473 states have (on average 1.4207188160676534) internal successors, (672), 474 states have internal predecessors, (672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:05,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 672 transitions. [2022-01-10 01:37:05,022 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 672 transitions. Word has length 54 [2022-01-10 01:37:05,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:05,022 INFO L470 AbstractCegarLoop]: Abstraction has 475 states and 672 transitions. [2022-01-10 01:37:05,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.5) internal successors, (54), 11 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:05,022 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 672 transitions. [2022-01-10 01:37:05,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:37:05,023 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:05,023 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] [2022-01-10 01:37:05,023 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-10 01:37:05,023 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:05,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:05,023 INFO L85 PathProgramCache]: Analyzing trace with hash -1521991144, now seen corresponding path program 1 times [2022-01-10 01:37:05,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:05,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057696503] [2022-01-10 01:37:05,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:05,024 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:05,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:05,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:05,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:05,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057696503] [2022-01-10 01:37:05,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057696503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:05,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:05,429 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-10 01:37:05,429 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319470894] [2022-01-10 01:37:05,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:05,430 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 01:37:05,430 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:05,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 01:37:05,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:37:05,431 INFO L87 Difference]: Start difference. First operand 475 states and 672 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-01-10 01:37:07,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:07,247 INFO L93 Difference]: Finished difference Result 2595 states and 3768 transitions. [2022-01-10 01:37:07,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-10 01:37:07,248 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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 [2022-01-10 01:37:07,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:07,254 INFO L225 Difference]: With dead ends: 2595 [2022-01-10 01:37:07,254 INFO L226 Difference]: Without dead ends: 2414 [2022-01-10 01:37:07,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=328, Invalid=1478, Unknown=0, NotChecked=0, Total=1806 [2022-01-10 01:37:07,256 INFO L933 BasicCegarLoop]: 278 mSDtfsCounter, 1023 mSDsluCounter, 3330 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 3608 SdHoareTripleChecker+Invalid, 1925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:07,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 3608 Invalid, 1925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:37:07,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2414 states. [2022-01-10 01:37:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2414 to 485. [2022-01-10 01:37:07,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 483 states have (on average 1.4161490683229814) internal successors, (684), 484 states have internal predecessors, (684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:07,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 684 transitions. [2022-01-10 01:37:07,345 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 684 transitions. Word has length 55 [2022-01-10 01:37:07,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:07,345 INFO L470 AbstractCegarLoop]: Abstraction has 485 states and 684 transitions. [2022-01-10 01:37:07,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-01-10 01:37:07,346 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 684 transitions. [2022-01-10 01:37:07,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:37:07,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:07,349 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] [2022-01-10 01:37:07,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 01:37:07,350 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:07,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:07,350 INFO L85 PathProgramCache]: Analyzing trace with hash 822613335, now seen corresponding path program 1 times [2022-01-10 01:37:07,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:07,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874293545] [2022-01-10 01:37:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:07,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:07,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:07,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:07,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874293545] [2022-01-10 01:37:07,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874293545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:07,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-10 01:37:07,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211144620] [2022-01-10 01:37:07,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:07,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 01:37:07,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 01:37:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:37:07,750 INFO L87 Difference]: Start difference. First operand 485 states and 684 transitions. Second operand has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-01-10 01:37:09,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:09,908 INFO L93 Difference]: Finished difference Result 3168 states and 4615 transitions. [2022-01-10 01:37:09,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-10 01:37:09,908 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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 [2022-01-10 01:37:09,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:09,915 INFO L225 Difference]: With dead ends: 3168 [2022-01-10 01:37:09,915 INFO L226 Difference]: Without dead ends: 2993 [2022-01-10 01:37:09,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 277 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=306, Invalid=1416, Unknown=0, NotChecked=0, Total=1722 [2022-01-10 01:37:09,917 INFO L933 BasicCegarLoop]: 334 mSDtfsCounter, 1657 mSDsluCounter, 3773 mSDsCounter, 0 mSdLazyCounter, 2006 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1657 SdHoareTripleChecker+Valid, 4107 SdHoareTripleChecker+Invalid, 2072 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:09,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1657 Valid, 4107 Invalid, 2072 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2006 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:37:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2993 states. [2022-01-10 01:37:10,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2993 to 490. [2022-01-10 01:37:10,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 488 states have (on average 1.4139344262295082) internal successors, (690), 489 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:10,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 690 transitions. [2022-01-10 01:37:10,016 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 690 transitions. Word has length 55 [2022-01-10 01:37:10,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:10,016 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 690 transitions. [2022-01-10 01:37:10,016 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.619047619047619) internal successors, (55), 21 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) [2022-01-10 01:37:10,016 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 690 transitions. [2022-01-10 01:37:10,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:37:10,016 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:10,016 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] [2022-01-10 01:37:10,017 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 01:37:10,017 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:10,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:10,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1171871732, now seen corresponding path program 1 times [2022-01-10 01:37:10,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:10,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163800621] [2022-01-10 01:37:10,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:10,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:10,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:10,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:10,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:10,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163800621] [2022-01-10 01:37:10,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163800621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:10,281 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:10,281 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-01-10 01:37:10,281 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433140761] [2022-01-10 01:37:10,281 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:10,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-10 01:37:10,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:10,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-10 01:37:10,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-01-10 01:37:10,282 INFO L87 Difference]: Start difference. First operand 490 states and 690 transitions. Second operand has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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) [2022-01-10 01:37:11,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:11,578 INFO L93 Difference]: Finished difference Result 1841 states and 2668 transitions. [2022-01-10 01:37:11,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 01:37:11,594 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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 [2022-01-10 01:37:11,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:11,598 INFO L225 Difference]: With dead ends: 1841 [2022-01-10 01:37:11,598 INFO L226 Difference]: Without dead ends: 1645 [2022-01-10 01:37:11,599 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:37:11,599 INFO L933 BasicCegarLoop]: 296 mSDtfsCounter, 920 mSDsluCounter, 1259 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1555 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:11,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 1555 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:37:11,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1645 states. [2022-01-10 01:37:11,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1645 to 468. [2022-01-10 01:37:11,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 466 states have (on average 1.4163090128755365) internal successors, (660), 467 states have internal predecessors, (660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:11,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 660 transitions. [2022-01-10 01:37:11,751 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 660 transitions. Word has length 55 [2022-01-10 01:37:11,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:11,751 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 660 transitions. [2022-01-10 01:37:11,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.230769230769231) internal successors, (55), 13 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) [2022-01-10 01:37:11,751 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 660 transitions. [2022-01-10 01:37:11,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-01-10 01:37:11,751 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:11,751 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] [2022-01-10 01:37:11,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 01:37:11,752 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:11,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:11,752 INFO L85 PathProgramCache]: Analyzing trace with hash 380290649, now seen corresponding path program 1 times [2022-01-10 01:37:11,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:11,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077821503] [2022-01-10 01:37:11,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:11,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:11,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:11,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:11,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:11,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077821503] [2022-01-10 01:37:11,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077821503] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:11,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:11,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-01-10 01:37:11,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786237664] [2022-01-10 01:37:11,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:11,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-10 01:37:11,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:11,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-10 01:37:11,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2022-01-10 01:37:11,974 INFO L87 Difference]: Start difference. First operand 468 states and 660 transitions. Second operand has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2022-01-10 01:37:13,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:13,714 INFO L93 Difference]: Finished difference Result 2525 states and 3693 transitions. [2022-01-10 01:37:13,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-10 01:37:13,715 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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 [2022-01-10 01:37:13,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:13,720 INFO L225 Difference]: With dead ends: 2525 [2022-01-10 01:37:13,721 INFO L226 Difference]: Without dead ends: 2334 [2022-01-10 01:37:13,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=173, Invalid=427, Unknown=0, NotChecked=0, Total=600 [2022-01-10 01:37:13,722 INFO L933 BasicCegarLoop]: 287 mSDtfsCounter, 967 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 967 SdHoareTripleChecker+Valid, 1117 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:13,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [967 Valid, 1117 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 01:37:13,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2334 states. [2022-01-10 01:37:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2334 to 446. [2022-01-10 01:37:13,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 444 states have (on average 1.4211711711711712) internal successors, (631), 445 states have internal predecessors, (631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:13,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 631 transitions. [2022-01-10 01:37:13,868 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 631 transitions. Word has length 55 [2022-01-10 01:37:13,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:13,868 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 631 transitions. [2022-01-10 01:37:13,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.583333333333333) internal successors, (55), 12 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) [2022-01-10 01:37:13,868 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 631 transitions. [2022-01-10 01:37:13,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:37:13,868 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:13,869 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] [2022-01-10 01:37:13,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-10 01:37:13,869 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:13,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:13,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1258334466, now seen corresponding path program 1 times [2022-01-10 01:37:13,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:13,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973092094] [2022-01-10 01:37:13,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:13,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:14,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:14,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:14,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973092094] [2022-01-10 01:37:14,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973092094] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:14,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:14,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2022-01-10 01:37:14,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694796230] [2022-01-10 01:37:14,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:14,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-01-10 01:37:14,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:14,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-01-10 01:37:14,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-01-10 01:37:14,576 INFO L87 Difference]: Start difference. First operand 446 states and 631 transitions. Second operand has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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) [2022-01-10 01:37:19,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:19,151 INFO L93 Difference]: Finished difference Result 3721 states and 5464 transitions. [2022-01-10 01:37:19,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 01:37:19,152 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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 [2022-01-10 01:37:19,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:19,159 INFO L225 Difference]: With dead ends: 3721 [2022-01-10 01:37:19,160 INFO L226 Difference]: Without dead ends: 3546 [2022-01-10 01:37:19,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-01-10 01:37:19,161 INFO L933 BasicCegarLoop]: 365 mSDtfsCounter, 1493 mSDsluCounter, 4831 mSDsCounter, 0 mSdLazyCounter, 2648 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 5196 SdHoareTripleChecker+Invalid, 2697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 2648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:19,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1493 Valid, 5196 Invalid, 2697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 2648 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-10 01:37:19,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3546 states. [2022-01-10 01:37:19,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3546 to 447. [2022-01-10 01:37:19,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 445 states have (on average 1.4202247191011237) internal successors, (632), 446 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:19,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 632 transitions. [2022-01-10 01:37:19,338 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 632 transitions. Word has length 56 [2022-01-10 01:37:19,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:19,339 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 632 transitions. [2022-01-10 01:37:19,339 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 22 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) [2022-01-10 01:37:19,339 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 632 transitions. [2022-01-10 01:37:19,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-01-10 01:37:19,339 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:19,339 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] [2022-01-10 01:37:19,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 01:37:19,339 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:19,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:19,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1179705887, now seen corresponding path program 1 times [2022-01-10 01:37:19,340 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:19,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455580027] [2022-01-10 01:37:19,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:19,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:19,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:19,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:19,635 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:19,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455580027] [2022-01-10 01:37:19,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455580027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:19,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:19,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-01-10 01:37:19,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63908319] [2022-01-10 01:37:19,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:19,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 01:37:19,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:19,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 01:37:19,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-01-10 01:37:19,636 INFO L87 Difference]: Start difference. First operand 447 states and 632 transitions. Second operand has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 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) [2022-01-10 01:37:21,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:21,342 INFO L93 Difference]: Finished difference Result 1991 states and 2907 transitions. [2022-01-10 01:37:21,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 01:37:21,342 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 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 [2022-01-10 01:37:21,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:21,346 INFO L225 Difference]: With dead ends: 1991 [2022-01-10 01:37:21,346 INFO L226 Difference]: Without dead ends: 1816 [2022-01-10 01:37:21,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=144, Invalid=558, Unknown=0, NotChecked=0, Total=702 [2022-01-10 01:37:21,347 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 1147 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1147 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:21,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1147 Valid, 1880 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 01:37:21,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2022-01-10 01:37:21,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 447. [2022-01-10 01:37:21,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 445 states have (on average 1.4202247191011237) internal successors, (632), 446 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:21,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 632 transitions. [2022-01-10 01:37:21,539 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 632 transitions. Word has length 56 [2022-01-10 01:37:21,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:21,539 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 632 transitions. [2022-01-10 01:37:21,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 4.0) internal successors, (56), 14 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) [2022-01-10 01:37:21,539 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 632 transitions. [2022-01-10 01:37:21,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-01-10 01:37:21,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:21,539 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:37:21,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 01:37:21,540 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:21,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:21,540 INFO L85 PathProgramCache]: Analyzing trace with hash -684019272, now seen corresponding path program 1 times [2022-01-10 01:37:21,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:21,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221961634] [2022-01-10 01:37:21,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:21,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:21,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:21,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:21,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:21,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221961634] [2022-01-10 01:37:21,904 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221961634] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:21,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:21,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2022-01-10 01:37:21,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838783084] [2022-01-10 01:37:21,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:21,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-01-10 01:37:21,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:21,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-01-10 01:37:21,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2022-01-10 01:37:21,905 INFO L87 Difference]: Start difference. First operand 447 states and 632 transitions. Second operand has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:25,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:25,528 INFO L93 Difference]: Finished difference Result 3615 states and 5314 transitions. [2022-01-10 01:37:25,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-01-10 01:37:25,528 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2022-01-10 01:37:25,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:25,537 INFO L225 Difference]: With dead ends: 3615 [2022-01-10 01:37:25,537 INFO L226 Difference]: Without dead ends: 3440 [2022-01-10 01:37:25,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=385, Invalid=1777, Unknown=0, NotChecked=0, Total=2162 [2022-01-10 01:37:25,538 INFO L933 BasicCegarLoop]: 315 mSDtfsCounter, 1073 mSDsluCounter, 3765 mSDsCounter, 0 mSdLazyCounter, 2064 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 4080 SdHoareTripleChecker+Invalid, 2117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:25,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1073 Valid, 4080 Invalid, 2117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2064 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:37:25,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2022-01-10 01:37:25,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 428. [2022-01-10 01:37:25,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 1.4285714285714286) internal successors, (610), 427 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:25,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 610 transitions. [2022-01-10 01:37:25,751 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 610 transitions. Word has length 57 [2022-01-10 01:37:25,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:25,752 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 610 transitions. [2022-01-10 01:37:25,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.7142857142857144) internal successors, (57), 21 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:25,752 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 610 transitions. [2022-01-10 01:37:25,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-01-10 01:37:25,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:25,753 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] [2022-01-10 01:37:25,753 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-10 01:37:25,753 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:25,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:25,754 INFO L85 PathProgramCache]: Analyzing trace with hash -1531780676, now seen corresponding path program 1 times [2022-01-10 01:37:25,754 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:25,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114163831] [2022-01-10 01:37:25,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:25,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:25,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:25,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:25,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:25,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114163831] [2022-01-10 01:37:25,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114163831] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:25,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:25,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:25,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869597007] [2022-01-10 01:37:25,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:25,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:25,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:25,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:25,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:25,780 INFO L87 Difference]: Start difference. First operand 428 states and 610 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:26,157 INFO L93 Difference]: Finished difference Result 1112 states and 1613 transitions. [2022-01-10 01:37:26,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:26,158 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 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 75 [2022-01-10 01:37:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:26,160 INFO L225 Difference]: With dead ends: 1112 [2022-01-10 01:37:26,160 INFO L226 Difference]: Without dead ends: 741 [2022-01-10 01:37:26,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:26,161 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 70 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:26,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 189 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:26,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-01-10 01:37:26,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 730. [2022-01-10 01:37:26,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 730 states, 729 states have (on average 1.412894375857339) internal successors, (1030), 729 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:26,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 730 states to 730 states and 1030 transitions. [2022-01-10 01:37:26,518 INFO L78 Accepts]: Start accepts. Automaton has 730 states and 1030 transitions. Word has length 75 [2022-01-10 01:37:26,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:26,518 INFO L470 AbstractCegarLoop]: Abstraction has 730 states and 1030 transitions. [2022-01-10 01:37:26,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:26,518 INFO L276 IsEmpty]: Start isEmpty. Operand 730 states and 1030 transitions. [2022-01-10 01:37:26,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-01-10 01:37:26,519 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:26,519 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] [2022-01-10 01:37:26,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 01:37:26,519 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:26,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:26,520 INFO L85 PathProgramCache]: Analyzing trace with hash 241252331, now seen corresponding path program 1 times [2022-01-10 01:37:26,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:26,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25842099] [2022-01-10 01:37:26,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:26,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:26,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:26,545 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:26,545 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25842099] [2022-01-10 01:37:26,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [25842099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:26,545 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:26,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:26,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306134944] [2022-01-10 01:37:26,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:26,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:26,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:26,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:26,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:26,546 INFO L87 Difference]: Start difference. First operand 730 states and 1030 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:27,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:27,221 INFO L93 Difference]: Finished difference Result 2004 states and 2844 transitions. [2022-01-10 01:37:27,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:27,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 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 76 [2022-01-10 01:37:27,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:27,224 INFO L225 Difference]: With dead ends: 2004 [2022-01-10 01:37:27,224 INFO L226 Difference]: Without dead ends: 1331 [2022-01-10 01:37:27,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:27,225 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 51 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:27,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 257 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:27,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1331 states. [2022-01-10 01:37:27,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1331 to 1257. [2022-01-10 01:37:27,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1257 states, 1256 states have (on average 1.4052547770700636) internal successors, (1765), 1256 states have internal predecessors, (1765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:27,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1257 states to 1257 states and 1765 transitions. [2022-01-10 01:37:27,934 INFO L78 Accepts]: Start accepts. Automaton has 1257 states and 1765 transitions. Word has length 76 [2022-01-10 01:37:27,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:27,934 INFO L470 AbstractCegarLoop]: Abstraction has 1257 states and 1765 transitions. [2022-01-10 01:37:27,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:27,934 INFO L276 IsEmpty]: Start isEmpty. Operand 1257 states and 1765 transitions. [2022-01-10 01:37:27,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 01:37:27,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:27,935 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] [2022-01-10 01:37:27,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 01:37:27,935 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:27,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:27,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1306565925, now seen corresponding path program 1 times [2022-01-10 01:37:27,936 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:27,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477888580] [2022-01-10 01:37:27,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:27,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:27,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:27,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:27,957 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:27,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477888580] [2022-01-10 01:37:27,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477888580] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:27,957 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:27,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:27,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024854112] [2022-01-10 01:37:27,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:27,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:27,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:27,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:27,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:27,958 INFO L87 Difference]: Start difference. First operand 1257 states and 1765 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-01-10 01:37:29,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:29,177 INFO L93 Difference]: Finished difference Result 3513 states and 4923 transitions. [2022-01-10 01:37:29,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:29,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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 [2022-01-10 01:37:29,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:29,180 INFO L225 Difference]: With dead ends: 3513 [2022-01-10 01:37:29,181 INFO L226 Difference]: Without dead ends: 2313 [2022-01-10 01:37:29,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:29,182 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 44 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:29,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 255 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:29,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2313 states. [2022-01-10 01:37:30,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2313 to 2167. [2022-01-10 01:37:30,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2167 states, 2166 states have (on average 1.3855032317636196) internal successors, (3001), 2166 states have internal predecessors, (3001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:30,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2167 states to 2167 states and 3001 transitions. [2022-01-10 01:37:30,321 INFO L78 Accepts]: Start accepts. Automaton has 2167 states and 3001 transitions. Word has length 77 [2022-01-10 01:37:30,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:30,321 INFO L470 AbstractCegarLoop]: Abstraction has 2167 states and 3001 transitions. [2022-01-10 01:37:30,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 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) [2022-01-10 01:37:30,322 INFO L276 IsEmpty]: Start isEmpty. Operand 2167 states and 3001 transitions. [2022-01-10 01:37:30,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 01:37:30,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:30,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:37:30,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 01:37:30,322 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:30,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:30,323 INFO L85 PathProgramCache]: Analyzing trace with hash -1695604898, now seen corresponding path program 1 times [2022-01-10 01:37:30,323 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:30,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131707589] [2022-01-10 01:37:30,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:30,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:30,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:30,359 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:30,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131707589] [2022-01-10 01:37:30,359 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131707589] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:30,359 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:30,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:37:30,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438327874] [2022-01-10 01:37:30,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:30,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:37:30,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:30,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:37:30,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:37:30,360 INFO L87 Difference]: Start difference. First operand 2167 states and 3001 transitions. Second operand has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:32,587 INFO L93 Difference]: Finished difference Result 3858 states and 5300 transitions. [2022-01-10 01:37:32,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 01:37:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2022-01-10 01:37:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:32,592 INFO L225 Difference]: With dead ends: 3858 [2022-01-10 01:37:32,593 INFO L226 Difference]: Without dead ends: 3856 [2022-01-10 01:37:32,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-10 01:37:32,593 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 197 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 655 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:32,594 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 655 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3856 states. [2022-01-10 01:37:33,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3856 to 2263. [2022-01-10 01:37:33,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2263 states, 2262 states have (on average 1.3603006189213085) internal successors, (3077), 2262 states have internal predecessors, (3077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:33,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2263 states to 2263 states and 3077 transitions. [2022-01-10 01:37:33,826 INFO L78 Accepts]: Start accepts. Automaton has 2263 states and 3077 transitions. Word has length 78 [2022-01-10 01:37:33,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:33,826 INFO L470 AbstractCegarLoop]: Abstraction has 2263 states and 3077 transitions. [2022-01-10 01:37:33,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.0) internal successors, (78), 6 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:33,826 INFO L276 IsEmpty]: Start isEmpty. Operand 2263 states and 3077 transitions. [2022-01-10 01:37:33,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-01-10 01:37:33,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:33,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 01:37:33,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 01:37:33,827 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:33,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:33,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1415916470, now seen corresponding path program 1 times [2022-01-10 01:37:33,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:33,827 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559199910] [2022-01-10 01:37:33,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:33,827 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:33,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:33,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:33,848 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:33,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559199910] [2022-01-10 01:37:33,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559199910] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:33,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:33,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:33,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936417915] [2022-01-10 01:37:33,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:33,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:33,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:33,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:33,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:33,849 INFO L87 Difference]: Start difference. First operand 2263 states and 3077 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:35,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:35,933 INFO L93 Difference]: Finished difference Result 5883 states and 7991 transitions. [2022-01-10 01:37:35,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:35,933 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 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 79 [2022-01-10 01:37:35,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:35,938 INFO L225 Difference]: With dead ends: 5883 [2022-01-10 01:37:35,938 INFO L226 Difference]: Without dead ends: 3677 [2022-01-10 01:37:35,940 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:35,941 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 55 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:35,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 261 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:35,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3677 states. [2022-01-10 01:37:37,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3677 to 3387. [2022-01-10 01:37:37,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3411104548139396) internal successors, (4541), 3386 states have internal predecessors, (4541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:37,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4541 transitions. [2022-01-10 01:37:37,861 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4541 transitions. Word has length 79 [2022-01-10 01:37:37,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:37,861 INFO L470 AbstractCegarLoop]: Abstraction has 3387 states and 4541 transitions. [2022-01-10 01:37:37,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:37,861 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4541 transitions. [2022-01-10 01:37:37,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:37:37,862 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:37,862 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:37:37,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 01:37:37,862 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:37,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:37,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1940322908, now seen corresponding path program 1 times [2022-01-10 01:37:37,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:37,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731900407] [2022-01-10 01:37:37,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:37,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:37,894 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:37,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:37,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731900407] [2022-01-10 01:37:37,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731900407] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:37:37,894 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:37:37,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 01:37:37,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1933562123] [2022-01-10 01:37:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:37:37,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 01:37:37,895 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:37:37,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 01:37:37,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:37,895 INFO L87 Difference]: Start difference. First operand 3387 states and 4541 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:39,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:37:39,831 INFO L93 Difference]: Finished difference Result 6719 states and 9023 transitions. [2022-01-10 01:37:39,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 01:37:39,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 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 100 [2022-01-10 01:37:39,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:37:39,836 INFO L225 Difference]: With dead ends: 6719 [2022-01-10 01:37:39,836 INFO L226 Difference]: Without dead ends: 3389 [2022-01-10 01:37:39,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 01:37:39,839 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 57 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 01:37:39,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 233 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 01:37:39,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-01-10 01:37:41,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3387. [2022-01-10 01:37:41,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3387 states, 3386 states have (on average 1.3198464264619019) internal successors, (4469), 3386 states have internal predecessors, (4469), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:41,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3387 states to 3387 states and 4469 transitions. [2022-01-10 01:37:41,775 INFO L78 Accepts]: Start accepts. Automaton has 3387 states and 4469 transitions. Word has length 100 [2022-01-10 01:37:41,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:37:41,775 INFO L470 AbstractCegarLoop]: Abstraction has 3387 states and 4469 transitions. [2022-01-10 01:37:41,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 01:37:41,776 INFO L276 IsEmpty]: Start isEmpty. Operand 3387 states and 4469 transitions. [2022-01-10 01:37:41,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-01-10 01:37:41,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:37:41,776 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 01:37:41,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 01:37:41,777 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:37:41,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:37:41,777 INFO L85 PathProgramCache]: Analyzing trace with hash -1124551470, now seen corresponding path program 1 times [2022-01-10 01:37:41,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:37:41,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924254218] [2022-01-10 01:37:41,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:41,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:37:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:41,933 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:37:41,934 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:37:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924254218] [2022-01-10 01:37:41,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924254218] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 01:37:41,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [975942285] [2022-01-10 01:37:41,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:37:41,934 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 01:37:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:37:41,946 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 01:37:42,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 01:37:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:37:42,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-10 01:37:42,072 INFO L286 TraceCheckSpWp]: Computing forward predicates...