/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInlineTransformed.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-11 00:18:00,135 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-11 00:18:00,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-11 00:18:00,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-11 00:18:00,214 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-11 00:18:00,215 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-11 00:18:00,216 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-11 00:18:00,216 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-11 00:18:00,217 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-11 00:18:00,218 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-11 00:18:00,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-11 00:18:00,220 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-11 00:18:00,221 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-11 00:18:00,224 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-11 00:18:00,227 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-11 00:18:00,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-11 00:18:00,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-11 00:18:00,238 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-11 00:18:00,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-11 00:18:00,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-11 00:18:00,240 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-11 00:18:00,241 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-11 00:18:00,241 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-11 00:18:00,242 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-11 00:18:00,243 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-11 00:18:00,244 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-11 00:18:00,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-11 00:18:00,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-11 00:18:00,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-11 00:18:00,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-11 00:18:00,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-11 00:18:00,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-11 00:18:00,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-11 00:18:00,250 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_BvToInt_NONE.epf [2022-01-11 00:18:00,280 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-11 00:18:00,281 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-11 00:18:00,281 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-11 00:18:00,281 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-11 00:18:00,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-11 00:18:00,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-11 00:18:00,283 INFO L138 SettingsManager]: * Use SBE=true [2022-01-11 00:18:00,283 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-11 00:18:00,283 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-11 00:18:00,283 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-11 00:18:00,284 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-11 00:18:00,285 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:00,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-11 00:18:00,285 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-01-11 00:18:00,286 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-11 00:18:00,287 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-11 00:18:00,287 INFO L138 SettingsManager]: * TransformationType=BV_TO_INT_NONE WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-11 00:18:00,543 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-11 00:18:00,565 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-11 00:18:00,567 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-11 00:18:00,568 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-11 00:18:00,569 INFO L275 PluginConnector]: CDTParser initialized [2022-01-11 00:18:00,571 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2022-01-11 00:18:00,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8aab1d0/e1e32ba60bb94a398b08fe268c7aefe4/FLAG05da74c54 [2022-01-11 00:18:01,128 INFO L306 CDTParser]: Found 1 translation units. [2022-01-11 00:18:01,135 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c [2022-01-11 00:18:01,151 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8aab1d0/e1e32ba60bb94a398b08fe268c7aefe4/FLAG05da74c54 [2022-01-11 00:18:01,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e8aab1d0/e1e32ba60bb94a398b08fe268c7aefe4 [2022-01-11 00:18:01,479 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-11 00:18:01,480 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-01-11 00:18:01,482 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:01,482 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-11 00:18:01,489 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-11 00:18:01,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:01" (1/1) ... [2022-01-11 00:18:01,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e4de71a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:01, skipping insertion in model container [2022-01-11 00:18:01,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.01 12:18:01" (1/1) ... [2022-01-11 00:18:01,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-11 00:18:01,540 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-11 00:18:01,757 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2022-01-11 00:18:01,916 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:01,931 INFO L203 MainTranslator]: Completed pre-run [2022-01-11 00:18:01,942 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.10.cil-1.c[671,684] [2022-01-11 00:18:02,020 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-11 00:18:02,039 INFO L208 MainTranslator]: Completed translation [2022-01-11 00:18:02,041 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02 WrapperNode [2022-01-11 00:18:02,041 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-11 00:18:02,042 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:02,042 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-11 00:18:02,042 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-11 00:18:02,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,157 INFO L137 Inliner]: procedures = 48, calls = 62, calls flagged for inlining = 57, calls inlined = 210, statements flattened = 3198 [2022-01-11 00:18:02,158 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-11 00:18:02,159 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-11 00:18:02,159 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-11 00:18:02,159 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-11 00:18:02,166 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,166 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,274 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,291 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-11 00:18:02,292 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-11 00:18:02,292 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-11 00:18:02,292 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-11 00:18:02,293 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (1/1) ... [2022-01-11 00:18:02,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-11 00:18:02,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-11 00:18:02,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-11 00:18:02,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-11 00:18:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-11 00:18:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-11 00:18:02,367 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-11 00:18:02,367 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-11 00:18:02,463 INFO L234 CfgBuilder]: Building ICFG [2022-01-11 00:18:02,465 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-11 00:18:04,042 INFO L275 CfgBuilder]: Performing block encoding [2022-01-11 00:18:04,066 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-11 00:18:04,067 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2022-01-11 00:18:04,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:04 BoogieIcfgContainer [2022-01-11 00:18:04,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-11 00:18:04,071 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-11 00:18:04,071 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-11 00:18:04,073 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-11 00:18:04,077 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:04" (1/1) ... [2022-01-11 00:18:04,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:04 BasicIcfg [2022-01-11 00:18:04,450 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-11 00:18:04,451 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-11 00:18:04,451 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-11 00:18:04,454 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-11 00:18:04,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.01 12:18:01" (1/4) ... [2022-01-11 00:18:04,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b5e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:04, skipping insertion in model container [2022-01-11 00:18:04,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.01 12:18:02" (2/4) ... [2022-01-11 00:18:04,455 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b5e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.01 12:18:04, skipping insertion in model container [2022-01-11 00:18:04,455 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.01 12:18:04" (3/4) ... [2022-01-11 00:18:04,456 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b5e12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.01 12:18:04, skipping insertion in model container [2022-01-11 00:18:04,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 11.01 12:18:04" (4/4) ... [2022-01-11 00:18:04,456 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.10.cil-1.cTransformedIcfg [2022-01-11 00:18:04,463 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-11 00:18:04,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-11 00:18:04,518 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-11 00:18:04,525 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-11 00:18:04,525 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-11 00:18:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand has 1376 states, 1373 states have (on average 1.5083758193736343) internal successors, (2071), 1375 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:04,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:04,580 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:04,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:04,581 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:04,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:04,586 INFO L85 PathProgramCache]: Analyzing trace with hash 746891946, now seen corresponding path program 1 times [2022-01-11 00:18:04,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:04,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066281375] [2022-01-11 00:18:04,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:04,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:04,979 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:04,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066281375] [2022-01-11 00:18:04,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066281375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:04,980 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:04,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:04,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932971662] [2022-01-11 00:18:04,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:04,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:04,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:05,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:05,022 INFO L87 Difference]: Start difference. First operand has 1376 states, 1373 states have (on average 1.5083758193736343) internal successors, (2071), 1375 states have internal predecessors, (2071), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:05,227 INFO L93 Difference]: Finished difference Result 3889 states and 5840 transitions. [2022-01-11 00:18:05,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:05,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:05,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:05,261 INFO L225 Difference]: With dead ends: 3889 [2022-01-11 00:18:05,261 INFO L226 Difference]: Without dead ends: 2522 [2022-01-11 00:18:05,273 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:05,277 INFO L933 BasicCegarLoop]: 2035 mSDtfsCounter, 1907 mSDsluCounter, 1807 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1907 SdHoareTripleChecker+Valid, 3842 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:05,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1907 Valid, 3842 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:05,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2522 states. [2022-01-11 00:18:05,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2522 to 2518. [2022-01-11 00:18:05,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4817170111287759) internal successors, (3728), 2517 states have internal predecessors, (3728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3728 transitions. [2022-01-11 00:18:05,432 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3728 transitions. Word has length 142 [2022-01-11 00:18:05,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:05,432 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3728 transitions. [2022-01-11 00:18:05,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,434 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3728 transitions. [2022-01-11 00:18:05,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:05,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:05,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:05,445 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-11 00:18:05,445 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:05,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:05,446 INFO L85 PathProgramCache]: Analyzing trace with hash 861828554, now seen corresponding path program 1 times [2022-01-11 00:18:05,446 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:05,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [480400039] [2022-01-11 00:18:05,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:05,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:05,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:05,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:05,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:05,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [480400039] [2022-01-11 00:18:05,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [480400039] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:05,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:05,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:05,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605651932] [2022-01-11 00:18:05,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:05,586 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:05,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:05,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:05,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:05,587 INFO L87 Difference]: Start difference. First operand 2518 states and 3728 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:05,675 INFO L93 Difference]: Finished difference Result 5018 states and 7426 transitions. [2022-01-11 00:18:05,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:05,676 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:05,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:05,686 INFO L225 Difference]: With dead ends: 5018 [2022-01-11 00:18:05,687 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:05,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:05,697 INFO L933 BasicCegarLoop]: 2025 mSDtfsCounter, 2013 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2013 SdHoareTripleChecker+Valid, 2025 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:05,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2013 Valid, 2025 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:05,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.478537360890302) internal successors, (3720), 2517 states have internal predecessors, (3720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3720 transitions. [2022-01-11 00:18:05,782 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3720 transitions. Word has length 142 [2022-01-11 00:18:05,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:05,783 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3720 transitions. [2022-01-11 00:18:05,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:05,784 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3720 transitions. [2022-01-11 00:18:05,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:05,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:05,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:05,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-11 00:18:05,790 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:05,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:05,795 INFO L85 PathProgramCache]: Analyzing trace with hash 311346858, now seen corresponding path program 1 times [2022-01-11 00:18:05,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:05,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [966320968] [2022-01-11 00:18:05,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:05,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:05,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:05,905 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:05,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [966320968] [2022-01-11 00:18:05,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [966320968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:05,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:05,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:05,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693005815] [2022-01-11 00:18:05,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:05,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:05,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:05,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:05,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:05,908 INFO L87 Difference]: Start difference. First operand 2518 states and 3720 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:06,036 INFO L93 Difference]: Finished difference Result 5017 states and 7409 transitions. [2022-01-11 00:18:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:06,048 INFO L225 Difference]: With dead ends: 5017 [2022-01-11 00:18:06,049 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:06,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,055 INFO L933 BasicCegarLoop]: 2020 mSDtfsCounter, 2007 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2007 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:06,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2007 Valid, 2020 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:06,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:06,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:06,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4753577106518283) internal successors, (3712), 2517 states have internal predecessors, (3712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3712 transitions. [2022-01-11 00:18:06,152 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3712 transitions. Word has length 142 [2022-01-11 00:18:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:06,152 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3712 transitions. [2022-01-11 00:18:06,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3712 transitions. [2022-01-11 00:18:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:06,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:06,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:06,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-11 00:18:06,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:06,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:06,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1784620598, now seen corresponding path program 1 times [2022-01-11 00:18:06,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:06,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839591358] [2022-01-11 00:18:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:06,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:06,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:06,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839591358] [2022-01-11 00:18:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [839591358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:06,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:06,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:06,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424748536] [2022-01-11 00:18:06,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:06,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:06,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:06,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:06,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,246 INFO L87 Difference]: Start difference. First operand 2518 states and 3712 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:06,352 INFO L93 Difference]: Finished difference Result 5016 states and 7392 transitions. [2022-01-11 00:18:06,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:06,352 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:06,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:06,362 INFO L225 Difference]: With dead ends: 5016 [2022-01-11 00:18:06,363 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:06,367 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,374 INFO L933 BasicCegarLoop]: 2015 mSDtfsCounter, 2001 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2001 SdHoareTripleChecker+Valid, 2015 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:06,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2001 Valid, 2015 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:06,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:06,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:06,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4721780604133545) internal successors, (3704), 2517 states have internal predecessors, (3704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3704 transitions. [2022-01-11 00:18:06,510 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3704 transitions. Word has length 142 [2022-01-11 00:18:06,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:06,510 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3704 transitions. [2022-01-11 00:18:06,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,511 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3704 transitions. [2022-01-11 00:18:06,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:06,512 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:06,512 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:06,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-11 00:18:06,513 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:06,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:06,513 INFO L85 PathProgramCache]: Analyzing trace with hash -328211798, now seen corresponding path program 1 times [2022-01-11 00:18:06,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:06,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1799637539] [2022-01-11 00:18:06,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:06,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:06,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:06,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:06,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:06,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1799637539] [2022-01-11 00:18:06,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1799637539] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:06,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:06,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:06,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587835512] [2022-01-11 00:18:06,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:06,581 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:06,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:06,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:06,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,582 INFO L87 Difference]: Start difference. First operand 2518 states and 3704 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:06,687 INFO L93 Difference]: Finished difference Result 5015 states and 7375 transitions. [2022-01-11 00:18:06,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:06,687 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:06,697 INFO L225 Difference]: With dead ends: 5015 [2022-01-11 00:18:06,697 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:06,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,703 INFO L933 BasicCegarLoop]: 2010 mSDtfsCounter, 1995 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1995 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:06,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1995 Valid, 2010 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:06,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:06,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4689984101748808) internal successors, (3696), 2517 states have internal predecessors, (3696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3696 transitions. [2022-01-11 00:18:06,804 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3696 transitions. Word has length 142 [2022-01-11 00:18:06,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:06,805 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3696 transitions. [2022-01-11 00:18:06,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3696 transitions. [2022-01-11 00:18:06,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:06,810 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:06,810 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:06,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-11 00:18:06,810 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:06,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:06,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1389609526, now seen corresponding path program 1 times [2022-01-11 00:18:06,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:06,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001587387] [2022-01-11 00:18:06,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:06,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:06,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:06,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:06,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001587387] [2022-01-11 00:18:06,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001587387] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:06,880 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:06,880 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:06,880 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482005958] [2022-01-11 00:18:06,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:06,881 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:06,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:06,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:06,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,882 INFO L87 Difference]: Start difference. First operand 2518 states and 3696 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:06,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:06,982 INFO L93 Difference]: Finished difference Result 5013 states and 7356 transitions. [2022-01-11 00:18:06,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:06,983 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:06,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:06,992 INFO L225 Difference]: With dead ends: 5013 [2022-01-11 00:18:06,992 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:06,996 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:06,998 INFO L933 BasicCegarLoop]: 2005 mSDtfsCounter, 1988 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:06,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1988 Valid, 2005 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:07,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:07,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.465818759936407) internal successors, (3688), 2517 states have internal predecessors, (3688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3688 transitions. [2022-01-11 00:18:07,096 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3688 transitions. Word has length 142 [2022-01-11 00:18:07,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:07,096 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3688 transitions. [2022-01-11 00:18:07,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,097 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3688 transitions. [2022-01-11 00:18:07,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:07,098 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:07,098 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:07,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-11 00:18:07,098 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:07,099 INFO L85 PathProgramCache]: Analyzing trace with hash 562356458, now seen corresponding path program 1 times [2022-01-11 00:18:07,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:07,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770731353] [2022-01-11 00:18:07,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:07,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:07,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:07,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:07,193 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:07,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770731353] [2022-01-11 00:18:07,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770731353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:07,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:07,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:07,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208097114] [2022-01-11 00:18:07,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:07,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:07,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:07,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:07,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,195 INFO L87 Difference]: Start difference. First operand 2518 states and 3688 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:07,303 INFO L93 Difference]: Finished difference Result 5012 states and 7339 transitions. [2022-01-11 00:18:07,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:07,304 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:07,314 INFO L225 Difference]: With dead ends: 5012 [2022-01-11 00:18:07,314 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:07,319 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,320 INFO L933 BasicCegarLoop]: 2000 mSDtfsCounter, 1982 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1982 SdHoareTripleChecker+Valid, 2000 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:07,321 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1982 Valid, 2000 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:07,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:07,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:07,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4626391096979332) internal successors, (3680), 2517 states have internal predecessors, (3680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3680 transitions. [2022-01-11 00:18:07,429 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3680 transitions. Word has length 142 [2022-01-11 00:18:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:07,430 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3680 transitions. [2022-01-11 00:18:07,431 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,431 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3680 transitions. [2022-01-11 00:18:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:07,432 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:07,432 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:07,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-11 00:18:07,433 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:07,433 INFO L85 PathProgramCache]: Analyzing trace with hash -67413558, now seen corresponding path program 1 times [2022-01-11 00:18:07,433 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:07,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677550725] [2022-01-11 00:18:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:07,434 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:07,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:07,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:07,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:07,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677550725] [2022-01-11 00:18:07,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677550725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:07,483 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:07,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:07,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336988966] [2022-01-11 00:18:07,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:07,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:07,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:07,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:07,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,484 INFO L87 Difference]: Start difference. First operand 2518 states and 3680 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:07,602 INFO L93 Difference]: Finished difference Result 5011 states and 7322 transitions. [2022-01-11 00:18:07,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:07,604 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:07,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:07,612 INFO L225 Difference]: With dead ends: 5011 [2022-01-11 00:18:07,613 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:07,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,617 INFO L933 BasicCegarLoop]: 1995 mSDtfsCounter, 1976 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:07,617 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1976 Valid, 1995 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:07,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:07,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:07,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4594594594594594) internal successors, (3672), 2517 states have internal predecessors, (3672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3672 transitions. [2022-01-11 00:18:07,741 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3672 transitions. Word has length 142 [2022-01-11 00:18:07,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:07,743 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3672 transitions. [2022-01-11 00:18:07,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,743 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3672 transitions. [2022-01-11 00:18:07,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:07,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:07,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:07,745 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-11 00:18:07,745 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:07,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:07,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1851933930, now seen corresponding path program 1 times [2022-01-11 00:18:07,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:07,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742843097] [2022-01-11 00:18:07,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:07,746 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:07,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:07,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:07,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:07,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742843097] [2022-01-11 00:18:07,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742843097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:07,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:07,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:07,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078578695] [2022-01-11 00:18:07,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:07,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:07,796 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:07,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:07,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,797 INFO L87 Difference]: Start difference. First operand 2518 states and 3672 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:07,914 INFO L93 Difference]: Finished difference Result 5010 states and 7305 transitions. [2022-01-11 00:18:07,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:07,915 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:07,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:07,924 INFO L225 Difference]: With dead ends: 5010 [2022-01-11 00:18:07,924 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:07,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:07,931 INFO L933 BasicCegarLoop]: 1990 mSDtfsCounter, 1970 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1970 SdHoareTripleChecker+Valid, 1990 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:07,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1970 Valid, 1990 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:07,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:08,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4562798092209857) internal successors, (3664), 2517 states have internal predecessors, (3664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3664 transitions. [2022-01-11 00:18:08,049 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3664 transitions. Word has length 142 [2022-01-11 00:18:08,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:08,049 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3664 transitions. [2022-01-11 00:18:08,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,050 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3664 transitions. [2022-01-11 00:18:08,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:08,051 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:08,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:08,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-11 00:18:08,052 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:08,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:08,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1411287606, now seen corresponding path program 1 times [2022-01-11 00:18:08,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:08,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979159326] [2022-01-11 00:18:08,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:08,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:08,098 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:08,098 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:08,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979159326] [2022-01-11 00:18:08,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979159326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:08,099 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:08,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:08,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705296923] [2022-01-11 00:18:08,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:08,100 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:08,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:08,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,100 INFO L87 Difference]: Start difference. First operand 2518 states and 3664 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:08,208 INFO L93 Difference]: Finished difference Result 5009 states and 7288 transitions. [2022-01-11 00:18:08,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:08,209 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:08,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:08,236 INFO L225 Difference]: With dead ends: 5009 [2022-01-11 00:18:08,237 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:08,242 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,243 INFO L933 BasicCegarLoop]: 1985 mSDtfsCounter, 1964 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:08,244 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1964 Valid, 1985 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:08,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:08,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:08,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4531001589825119) internal successors, (3656), 2517 states have internal predecessors, (3656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3656 transitions. [2022-01-11 00:18:08,386 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3656 transitions. Word has length 142 [2022-01-11 00:18:08,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:08,386 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3656 transitions. [2022-01-11 00:18:08,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3656 transitions. [2022-01-11 00:18:08,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:08,388 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:08,388 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:08,388 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-11 00:18:08,388 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:08,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1531488490, now seen corresponding path program 1 times [2022-01-11 00:18:08,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:08,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997721334] [2022-01-11 00:18:08,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:08,389 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:08,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:08,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:08,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997721334] [2022-01-11 00:18:08,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997721334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:08,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:08,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:08,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55257191] [2022-01-11 00:18:08,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:08,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:08,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:08,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:08,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,440 INFO L87 Difference]: Start difference. First operand 2518 states and 3656 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:08,573 INFO L93 Difference]: Finished difference Result 5008 states and 7271 transitions. [2022-01-11 00:18:08,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:08,574 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:08,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:08,582 INFO L225 Difference]: With dead ends: 5008 [2022-01-11 00:18:08,582 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:08,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,588 INFO L933 BasicCegarLoop]: 1954 mSDtfsCounter, 1833 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:08,588 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1833 Valid, 2062 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:08,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:08,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:08,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4403815580286168) internal successors, (3624), 2517 states have internal predecessors, (3624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3624 transitions. [2022-01-11 00:18:08,702 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3624 transitions. Word has length 142 [2022-01-11 00:18:08,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:08,703 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3624 transitions. [2022-01-11 00:18:08,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3624 transitions. [2022-01-11 00:18:08,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:08,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:08,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:08,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-11 00:18:08,705 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:08,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:08,705 INFO L85 PathProgramCache]: Analyzing trace with hash -356431287, now seen corresponding path program 1 times [2022-01-11 00:18:08,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:08,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593798307] [2022-01-11 00:18:08,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:08,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:08,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:08,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:08,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593798307] [2022-01-11 00:18:08,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593798307] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:08,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:08,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:08,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899555688] [2022-01-11 00:18:08,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:08,773 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:08,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:08,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:08,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,774 INFO L87 Difference]: Start difference. First operand 2518 states and 3624 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:08,928 INFO L93 Difference]: Finished difference Result 5007 states and 7206 transitions. [2022-01-11 00:18:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:08,929 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:08,934 INFO L225 Difference]: With dead ends: 5007 [2022-01-11 00:18:08,934 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:08,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:08,939 INFO L933 BasicCegarLoop]: 1936 mSDtfsCounter, 1815 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1815 SdHoareTripleChecker+Valid, 2043 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:08,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1815 Valid, 2043 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:08,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:09,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:09,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4276629570747217) internal successors, (3592), 2517 states have internal predecessors, (3592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3592 transitions. [2022-01-11 00:18:09,067 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3592 transitions. Word has length 142 [2022-01-11 00:18:09,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:09,068 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3592 transitions. [2022-01-11 00:18:09,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,069 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3592 transitions. [2022-01-11 00:18:09,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:09,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:09,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:09,071 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-11 00:18:09,071 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:09,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:09,071 INFO L85 PathProgramCache]: Analyzing trace with hash 458590504, now seen corresponding path program 1 times [2022-01-11 00:18:09,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:09,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818485640] [2022-01-11 00:18:09,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:09,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:09,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:09,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:09,128 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:09,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818485640] [2022-01-11 00:18:09,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818485640] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:09,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:09,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:09,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961388177] [2022-01-11 00:18:09,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:09,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:09,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:09,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:09,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:09,130 INFO L87 Difference]: Start difference. First operand 2518 states and 3592 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:09,280 INFO L93 Difference]: Finished difference Result 5005 states and 7139 transitions. [2022-01-11 00:18:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:09,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:09,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:09,286 INFO L225 Difference]: With dead ends: 5005 [2022-01-11 00:18:09,286 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:09,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:09,291 INFO L933 BasicCegarLoop]: 1918 mSDtfsCounter, 1796 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1796 SdHoareTripleChecker+Valid, 2024 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:09,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1796 Valid, 2024 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:09,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:09,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4149443561208268) internal successors, (3560), 2517 states have internal predecessors, (3560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3560 transitions. [2022-01-11 00:18:09,422 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3560 transitions. Word has length 142 [2022-01-11 00:18:09,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:09,422 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3560 transitions. [2022-01-11 00:18:09,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,423 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3560 transitions. [2022-01-11 00:18:09,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:09,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:09,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:09,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-11 00:18:09,424 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:09,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1149340025, now seen corresponding path program 1 times [2022-01-11 00:18:09,425 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:09,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497869849] [2022-01-11 00:18:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:09,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:09,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:09,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:09,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:09,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497869849] [2022-01-11 00:18:09,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497869849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:09,469 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:09,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:09,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282950038] [2022-01-11 00:18:09,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:09,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:09,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:09,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:09,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:09,471 INFO L87 Difference]: Start difference. First operand 2518 states and 3560 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:09,626 INFO L93 Difference]: Finished difference Result 5004 states and 7074 transitions. [2022-01-11 00:18:09,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:09,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:09,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:09,632 INFO L225 Difference]: With dead ends: 5004 [2022-01-11 00:18:09,633 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:09,637 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:09,638 INFO L933 BasicCegarLoop]: 1900 mSDtfsCounter, 1778 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1778 SdHoareTripleChecker+Valid, 2005 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:09,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1778 Valid, 2005 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:09,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:09,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:09,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.4022257551669317) internal successors, (3528), 2517 states have internal predecessors, (3528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3528 transitions. [2022-01-11 00:18:09,753 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3528 transitions. Word has length 142 [2022-01-11 00:18:09,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:09,753 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3528 transitions. [2022-01-11 00:18:09,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:09,753 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3528 transitions. [2022-01-11 00:18:09,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:09,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:09,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:09,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-11 00:18:09,755 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:09,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:09,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1243043046, now seen corresponding path program 1 times [2022-01-11 00:18:09,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:09,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986351062] [2022-01-11 00:18:09,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:09,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:09,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:09,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986351062] [2022-01-11 00:18:09,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986351062] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:09,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:09,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:09,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721378355] [2022-01-11 00:18:09,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:09,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:09,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:09,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:09,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:09,804 INFO L87 Difference]: Start difference. First operand 2518 states and 3528 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:10,011 INFO L93 Difference]: Finished difference Result 5003 states and 7009 transitions. [2022-01-11 00:18:10,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:10,012 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:10,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:10,017 INFO L225 Difference]: With dead ends: 5003 [2022-01-11 00:18:10,017 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:10,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,022 INFO L933 BasicCegarLoop]: 1882 mSDtfsCounter, 1760 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1760 SdHoareTripleChecker+Valid, 1986 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:10,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1760 Valid, 1986 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:10,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:10,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:10,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3895071542130366) internal successors, (3496), 2517 states have internal predecessors, (3496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3496 transitions. [2022-01-11 00:18:10,160 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3496 transitions. Word has length 142 [2022-01-11 00:18:10,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:10,160 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3496 transitions. [2022-01-11 00:18:10,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3496 transitions. [2022-01-11 00:18:10,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:10,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:10,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:10,162 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-11 00:18:10,162 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:10,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:10,162 INFO L85 PathProgramCache]: Analyzing trace with hash 1657581765, now seen corresponding path program 1 times [2022-01-11 00:18:10,163 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:10,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828675692] [2022-01-11 00:18:10,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:10,163 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:10,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:10,214 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:10,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828675692] [2022-01-11 00:18:10,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828675692] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:10,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:10,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:10,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580446381] [2022-01-11 00:18:10,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:10,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:10,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:10,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:10,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,217 INFO L87 Difference]: Start difference. First operand 2518 states and 3496 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:10,371 INFO L93 Difference]: Finished difference Result 5002 states and 6944 transitions. [2022-01-11 00:18:10,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:10,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:10,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:10,376 INFO L225 Difference]: With dead ends: 5002 [2022-01-11 00:18:10,376 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:10,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,380 INFO L933 BasicCegarLoop]: 1864 mSDtfsCounter, 1742 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1742 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:10,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1742 Valid, 1967 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:10,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:10,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:10,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3767885532591415) internal successors, (3464), 2517 states have internal predecessors, (3464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3464 transitions. [2022-01-11 00:18:10,521 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3464 transitions. Word has length 142 [2022-01-11 00:18:10,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:10,521 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3464 transitions. [2022-01-11 00:18:10,521 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3464 transitions. [2022-01-11 00:18:10,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:10,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:10,523 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:10,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-11 00:18:10,523 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:10,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash -610579036, now seen corresponding path program 1 times [2022-01-11 00:18:10,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:10,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923923223] [2022-01-11 00:18:10,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:10,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:10,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:10,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:10,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:10,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923923223] [2022-01-11 00:18:10,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923923223] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:10,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:10,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:10,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218605744] [2022-01-11 00:18:10,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:10,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:10,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:10,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:10,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,565 INFO L87 Difference]: Start difference. First operand 2518 states and 3464 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:10,718 INFO L93 Difference]: Finished difference Result 5001 states and 6879 transitions. [2022-01-11 00:18:10,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:10,718 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:10,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:10,724 INFO L225 Difference]: With dead ends: 5001 [2022-01-11 00:18:10,724 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:10,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,728 INFO L933 BasicCegarLoop]: 1846 mSDtfsCounter, 1724 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1724 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:10,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1724 Valid, 1948 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:10,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:10,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:10,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3640699523052464) internal successors, (3432), 2517 states have internal predecessors, (3432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3432 transitions. [2022-01-11 00:18:10,848 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3432 transitions. Word has length 142 [2022-01-11 00:18:10,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:10,849 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3432 transitions. [2022-01-11 00:18:10,849 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:10,849 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3432 transitions. [2022-01-11 00:18:10,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:10,850 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:10,850 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:10,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-11 00:18:10,851 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:10,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:10,851 INFO L85 PathProgramCache]: Analyzing trace with hash 888461315, now seen corresponding path program 1 times [2022-01-11 00:18:10,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:10,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093385198] [2022-01-11 00:18:10,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:10,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:10,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:10,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:10,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:10,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093385198] [2022-01-11 00:18:10,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093385198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:10,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:10,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:10,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141041272] [2022-01-11 00:18:10,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:10,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:10,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:10,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:10,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:10,892 INFO L87 Difference]: Start difference. First operand 2518 states and 3432 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:11,091 INFO L93 Difference]: Finished difference Result 5000 states and 6814 transitions. [2022-01-11 00:18:11,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:11,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:11,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:11,097 INFO L225 Difference]: With dead ends: 5000 [2022-01-11 00:18:11,098 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:11,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:11,102 INFO L933 BasicCegarLoop]: 1828 mSDtfsCounter, 1706 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1929 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:11,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1706 Valid, 1929 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:11,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:11,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:11,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3513513513513513) internal successors, (3400), 2517 states have internal predecessors, (3400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3400 transitions. [2022-01-11 00:18:11,256 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3400 transitions. Word has length 142 [2022-01-11 00:18:11,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:11,257 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3400 transitions. [2022-01-11 00:18:11,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,257 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3400 transitions. [2022-01-11 00:18:11,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:11,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:11,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:11,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-11 00:18:11,259 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:11,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:11,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1757613214, now seen corresponding path program 1 times [2022-01-11 00:18:11,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:11,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821371190] [2022-01-11 00:18:11,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:11,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:11,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:11,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:11,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821371190] [2022-01-11 00:18:11,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821371190] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:11,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:11,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:11,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625508563] [2022-01-11 00:18:11,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:11,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:11,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:11,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:11,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:11,325 INFO L87 Difference]: Start difference. First operand 2518 states and 3400 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:11,488 INFO L93 Difference]: Finished difference Result 4999 states and 6749 transitions. [2022-01-11 00:18:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:11,489 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:11,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:11,495 INFO L225 Difference]: With dead ends: 4999 [2022-01-11 00:18:11,495 INFO L226 Difference]: Without dead ends: 2518 [2022-01-11 00:18:11,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:11,499 INFO L933 BasicCegarLoop]: 1810 mSDtfsCounter, 1688 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1910 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:11,500 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1688 Valid, 1910 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:11,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2022-01-11 00:18:11,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2518. [2022-01-11 00:18:11,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2518 states, 2516 states have (on average 1.3386327503974562) internal successors, (3368), 2517 states have internal predecessors, (3368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2518 states to 2518 states and 3368 transitions. [2022-01-11 00:18:11,653 INFO L78 Accepts]: Start accepts. Automaton has 2518 states and 3368 transitions. Word has length 142 [2022-01-11 00:18:11,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:11,653 INFO L470 AbstractCegarLoop]: Abstraction has 2518 states and 3368 transitions. [2022-01-11 00:18:11,653 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:11,653 INFO L276 IsEmpty]: Start isEmpty. Operand 2518 states and 3368 transitions. [2022-01-11 00:18:11,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:11,654 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:11,654 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:11,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-11 00:18:11,656 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:11,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:11,656 INFO L85 PathProgramCache]: Analyzing trace with hash -932025279, now seen corresponding path program 1 times [2022-01-11 00:18:11,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:11,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330318652] [2022-01-11 00:18:11,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:11,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:11,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:11,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:11,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:11,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330318652] [2022-01-11 00:18:11,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1330318652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:11,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:11,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:11,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059860901] [2022-01-11 00:18:11,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:11,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:11,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:11,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:11,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:11,730 INFO L87 Difference]: Start difference. First operand 2518 states and 3368 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:12,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:12,145 INFO L93 Difference]: Finished difference Result 5962 states and 8034 transitions. [2022-01-11 00:18:12,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:18:12,146 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:12,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:12,154 INFO L225 Difference]: With dead ends: 5962 [2022-01-11 00:18:12,155 INFO L226 Difference]: Without dead ends: 3496 [2022-01-11 00:18:12,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:18:12,162 INFO L933 BasicCegarLoop]: 1948 mSDtfsCounter, 5074 mSDsluCounter, 2080 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 4028 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:12,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 4028 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:12,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3496 states. [2022-01-11 00:18:12,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3496 to 2524. [2022-01-11 00:18:12,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2524 states, 2522 states have (on average 1.3283108643933386) internal successors, (3350), 2523 states have internal predecessors, (3350), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:12,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2524 states to 2524 states and 3350 transitions. [2022-01-11 00:18:12,374 INFO L78 Accepts]: Start accepts. Automaton has 2524 states and 3350 transitions. Word has length 142 [2022-01-11 00:18:12,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:12,374 INFO L470 AbstractCegarLoop]: Abstraction has 2524 states and 3350 transitions. [2022-01-11 00:18:12,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:12,374 INFO L276 IsEmpty]: Start isEmpty. Operand 2524 states and 3350 transitions. [2022-01-11 00:18:12,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:12,375 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:12,375 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:12,375 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-11 00:18:12,375 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:12,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:12,376 INFO L85 PathProgramCache]: Analyzing trace with hash -1373779774, now seen corresponding path program 1 times [2022-01-11 00:18:12,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:12,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633585532] [2022-01-11 00:18:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:12,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:12,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:12,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:12,427 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:12,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633585532] [2022-01-11 00:18:12,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633585532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:12,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:12,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:12,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102990696] [2022-01-11 00:18:12,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:12,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:12,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:12,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:12,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:12,433 INFO L87 Difference]: Start difference. First operand 2524 states and 3350 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:12,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:12,852 INFO L93 Difference]: Finished difference Result 7193 states and 9539 transitions. [2022-01-11 00:18:12,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:12,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:12,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:12,865 INFO L225 Difference]: With dead ends: 7193 [2022-01-11 00:18:12,865 INFO L226 Difference]: Without dead ends: 4723 [2022-01-11 00:18:12,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:12,871 INFO L933 BasicCegarLoop]: 1798 mSDtfsCounter, 1617 mSDsluCounter, 1605 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1617 SdHoareTripleChecker+Valid, 3403 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:12,871 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1617 Valid, 3403 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:12,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4723 states. [2022-01-11 00:18:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4723 to 4715. [2022-01-11 00:18:13,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4715 states, 4713 states have (on average 1.3216634839804795) internal successors, (6229), 4714 states have internal predecessors, (6229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4715 states to 4715 states and 6229 transitions. [2022-01-11 00:18:13,218 INFO L78 Accepts]: Start accepts. Automaton has 4715 states and 6229 transitions. Word has length 142 [2022-01-11 00:18:13,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:13,218 INFO L470 AbstractCegarLoop]: Abstraction has 4715 states and 6229 transitions. [2022-01-11 00:18:13,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:13,219 INFO L276 IsEmpty]: Start isEmpty. Operand 4715 states and 6229 transitions. [2022-01-11 00:18:13,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:13,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:13,220 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:13,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-11 00:18:13,221 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:13,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash -467007551, now seen corresponding path program 1 times [2022-01-11 00:18:13,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:13,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477153313] [2022-01-11 00:18:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:13,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:13,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:13,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:13,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:13,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477153313] [2022-01-11 00:18:13,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477153313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:13,302 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:13,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-11 00:18:13,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791679273] [2022-01-11 00:18:13,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:13,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-11 00:18:13,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:13,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-11 00:18:13,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-11 00:18:13,304 INFO L87 Difference]: Start difference. First operand 4715 states and 6229 transitions. Second operand has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:14,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:14,074 INFO L93 Difference]: Finished difference Result 12570 states and 16690 transitions. [2022-01-11 00:18:14,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-11 00:18:14,075 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:14,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:14,092 INFO L225 Difference]: With dead ends: 12570 [2022-01-11 00:18:14,092 INFO L226 Difference]: Without dead ends: 7941 [2022-01-11 00:18:14,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-11 00:18:14,101 INFO L933 BasicCegarLoop]: 1838 mSDtfsCounter, 4310 mSDsluCounter, 3651 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4310 SdHoareTripleChecker+Valid, 5489 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:14,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4310 Valid, 5489 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:14,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7941 states. [2022-01-11 00:18:14,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7941 to 4727. [2022-01-11 00:18:14,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4727 states, 4725 states have (on average 1.3113227513227512) internal successors, (6196), 4726 states have internal predecessors, (6196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:14,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4727 states to 4727 states and 6196 transitions. [2022-01-11 00:18:14,537 INFO L78 Accepts]: Start accepts. Automaton has 4727 states and 6196 transitions. Word has length 142 [2022-01-11 00:18:14,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:14,538 INFO L470 AbstractCegarLoop]: Abstraction has 4727 states and 6196 transitions. [2022-01-11 00:18:14,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 28.4) internal successors, (142), 5 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:14,538 INFO L276 IsEmpty]: Start isEmpty. Operand 4727 states and 6196 transitions. [2022-01-11 00:18:14,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:14,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:14,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:14,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-11 00:18:14,539 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:14,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:14,540 INFO L85 PathProgramCache]: Analyzing trace with hash -675705854, now seen corresponding path program 1 times [2022-01-11 00:18:14,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:14,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532671152] [2022-01-11 00:18:14,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:14,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:14,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:14,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:14,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532671152] [2022-01-11 00:18:14,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532671152] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:14,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:14,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:14,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492286596] [2022-01-11 00:18:14,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:14,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:14,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:14,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:14,610 INFO L87 Difference]: Start difference. First operand 4727 states and 6196 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:15,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:15,149 INFO L93 Difference]: Finished difference Result 13567 states and 17768 transitions. [2022-01-11 00:18:15,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:15,150 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:15,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:15,176 INFO L225 Difference]: With dead ends: 13567 [2022-01-11 00:18:15,176 INFO L226 Difference]: Without dead ends: 8949 [2022-01-11 00:18:15,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:15,189 INFO L933 BasicCegarLoop]: 1782 mSDtfsCounter, 1554 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 3375 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:15,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 3375 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:15,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8949 states. [2022-01-11 00:18:15,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8949 to 8937. [2022-01-11 00:18:15,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.3043088975937325) internal successors, (11654), 8936 states have internal predecessors, (11654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:15,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11654 transitions. [2022-01-11 00:18:15,781 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11654 transitions. Word has length 142 [2022-01-11 00:18:15,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:15,782 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11654 transitions. [2022-01-11 00:18:15,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:15,782 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11654 transitions. [2022-01-11 00:18:15,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:15,783 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:15,783 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:15,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-11 00:18:15,783 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:15,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:15,784 INFO L85 PathProgramCache]: Analyzing trace with hash -876255999, now seen corresponding path program 1 times [2022-01-11 00:18:15,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:15,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897378169] [2022-01-11 00:18:15,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:15,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:15,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:15,836 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:15,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897378169] [2022-01-11 00:18:15,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897378169] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:15,837 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:15,837 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:15,837 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056661094] [2022-01-11 00:18:15,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:15,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:15,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:15,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:15,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:15,838 INFO L87 Difference]: Start difference. First operand 8937 states and 11654 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:16,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:16,360 INFO L93 Difference]: Finished difference Result 17852 states and 23274 transitions. [2022-01-11 00:18:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:16,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:16,378 INFO L225 Difference]: With dead ends: 17852 [2022-01-11 00:18:16,378 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 00:18:16,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:16,392 INFO L933 BasicCegarLoop]: 1786 mSDtfsCounter, 1681 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1681 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:16,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1681 Valid, 1786 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:16,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 00:18:16,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 00:18:16,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.3013989927252378) internal successors, (11628), 8936 states have internal predecessors, (11628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:16,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11628 transitions. [2022-01-11 00:18:16,999 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11628 transitions. Word has length 142 [2022-01-11 00:18:17,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:17,000 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11628 transitions. [2022-01-11 00:18:17,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:17,000 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11628 transitions. [2022-01-11 00:18:17,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:17,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:17,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:17,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-11 00:18:17,001 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash 1408607456, now seen corresponding path program 1 times [2022-01-11 00:18:17,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:17,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031248926] [2022-01-11 00:18:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:17,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:17,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:17,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:17,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031248926] [2022-01-11 00:18:17,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031248926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:17,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:17,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:17,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272593738] [2022-01-11 00:18:17,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:17,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:17,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:17,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:17,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:17,061 INFO L87 Difference]: Start difference. First operand 8937 states and 11628 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:17,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:17,623 INFO L93 Difference]: Finished difference Result 17844 states and 23214 transitions. [2022-01-11 00:18:17,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:17,623 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:17,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:17,637 INFO L225 Difference]: With dead ends: 17844 [2022-01-11 00:18:17,638 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 00:18:17,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:17,647 INFO L933 BasicCegarLoop]: 1757 mSDtfsCounter, 1555 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 1854 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:17,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 1854 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:17,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 00:18:18,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 00:18:18,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.293564633463906) internal successors, (11558), 8936 states have internal predecessors, (11558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:18,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11558 transitions. [2022-01-11 00:18:18,135 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11558 transitions. Word has length 142 [2022-01-11 00:18:18,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:18,136 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11558 transitions. [2022-01-11 00:18:18,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:18,136 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11558 transitions. [2022-01-11 00:18:18,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:18,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:18,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:18,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-11 00:18:18,137 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:18,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:18,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1341600703, now seen corresponding path program 1 times [2022-01-11 00:18:18,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:18,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128671627] [2022-01-11 00:18:18,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:18,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:18,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:18,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:18,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:18,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128671627] [2022-01-11 00:18:18,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128671627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:18,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:18,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:18,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999156392] [2022-01-11 00:18:18,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:18,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:18,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:18,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:18,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:18,194 INFO L87 Difference]: Start difference. First operand 8937 states and 11558 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:18,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:18,725 INFO L93 Difference]: Finished difference Result 17836 states and 23066 transitions. [2022-01-11 00:18:18,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:18,726 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:18,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:18,736 INFO L225 Difference]: With dead ends: 17836 [2022-01-11 00:18:18,736 INFO L226 Difference]: Without dead ends: 8937 [2022-01-11 00:18:18,742 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:18,742 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 1531 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1836 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:18,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1531 Valid, 1836 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:18,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8937 states. [2022-01-11 00:18:19,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8937 to 8937. [2022-01-11 00:18:19,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8937 states, 8935 states have (on average 1.2857302742025742) internal successors, (11488), 8936 states have internal predecessors, (11488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8937 states to 8937 states and 11488 transitions. [2022-01-11 00:18:19,239 INFO L78 Accepts]: Start accepts. Automaton has 8937 states and 11488 transitions. Word has length 142 [2022-01-11 00:18:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:19,239 INFO L470 AbstractCegarLoop]: Abstraction has 8937 states and 11488 transitions. [2022-01-11 00:18:19,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 8937 states and 11488 transitions. [2022-01-11 00:18:19,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-01-11 00:18:19,240 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:19,240 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:19,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-11 00:18:19,241 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:19,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:19,241 INFO L85 PathProgramCache]: Analyzing trace with hash 831066526, now seen corresponding path program 1 times [2022-01-11 00:18:19,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:19,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766608663] [2022-01-11 00:18:19,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:19,242 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:19,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:19,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:19,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:19,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766608663] [2022-01-11 00:18:19,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766608663] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:19,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:19,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-11 00:18:19,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680277578] [2022-01-11 00:18:19,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:19,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:19,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:19,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:19,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:19,301 INFO L87 Difference]: Start difference. First operand 8937 states and 11488 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:20,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:20,394 INFO L93 Difference]: Finished difference Result 26473 states and 34027 transitions. [2022-01-11 00:18:20,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:20,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 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 142 [2022-01-11 00:18:20,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:20,413 INFO L225 Difference]: With dead ends: 26473 [2022-01-11 00:18:20,413 INFO L226 Difference]: Without dead ends: 17576 [2022-01-11 00:18:20,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:20,421 INFO L933 BasicCegarLoop]: 1740 mSDtfsCounter, 1571 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1571 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:20,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1571 Valid, 3300 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17576 states. [2022-01-11 00:18:21,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17576 to 16952. [2022-01-11 00:18:21,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16952 states, 16950 states have (on average 1.280589970501475) internal successors, (21706), 16951 states have internal predecessors, (21706), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:21,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16952 states to 16952 states and 21706 transitions. [2022-01-11 00:18:21,464 INFO L78 Accepts]: Start accepts. Automaton has 16952 states and 21706 transitions. Word has length 142 [2022-01-11 00:18:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:21,465 INFO L470 AbstractCegarLoop]: Abstraction has 16952 states and 21706 transitions. [2022-01-11 00:18:21,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 16952 states and 21706 transitions. [2022-01-11 00:18:21,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 00:18:21,473 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:21,473 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:21,473 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-11 00:18:21,473 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:21,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:21,474 INFO L85 PathProgramCache]: Analyzing trace with hash -758390146, now seen corresponding path program 1 times [2022-01-11 00:18:21,474 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:21,474 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030680829] [2022-01-11 00:18:21,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:21,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:21,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:21,552 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:21,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:21,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030680829] [2022-01-11 00:18:21,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030680829] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:21,553 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:21,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:21,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [457263033] [2022-01-11 00:18:21,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:21,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:21,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:21,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:21,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:21,555 INFO L87 Difference]: Start difference. First operand 16952 states and 21706 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:23,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:23,379 INFO L93 Difference]: Finished difference Result 50321 states and 64486 transitions. [2022-01-11 00:18:23,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:23,380 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2022-01-11 00:18:23,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:23,425 INFO L225 Difference]: With dead ends: 50321 [2022-01-11 00:18:23,425 INFO L226 Difference]: Without dead ends: 33415 [2022-01-11 00:18:23,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:23,447 INFO L933 BasicCegarLoop]: 1737 mSDtfsCounter, 1608 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 3297 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:23,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 3297 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-11 00:18:23,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33415 states. [2022-01-11 00:18:25,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33415 to 32291. [2022-01-11 00:18:25,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32291 states, 32289 states have (on average 1.2783300814518876) internal successors, (41276), 32290 states have internal predecessors, (41276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:25,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32291 states to 32291 states and 41276 transitions. [2022-01-11 00:18:25,466 INFO L78 Accepts]: Start accepts. Automaton has 32291 states and 41276 transitions. Word has length 231 [2022-01-11 00:18:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:25,466 INFO L470 AbstractCegarLoop]: Abstraction has 32291 states and 41276 transitions. [2022-01-11 00:18:25,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:25,467 INFO L276 IsEmpty]: Start isEmpty. Operand 32291 states and 41276 transitions. [2022-01-11 00:18:25,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 00:18:25,482 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:25,483 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:25,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-11 00:18:25,483 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:25,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1203132990, now seen corresponding path program 1 times [2022-01-11 00:18:25,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:25,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724852725] [2022-01-11 00:18:25,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:25,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:25,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:25,561 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:25,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:25,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724852725] [2022-01-11 00:18:25,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724852725] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:25,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:25,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:25,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613658743] [2022-01-11 00:18:25,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:25,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:25,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:25,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:25,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:25,563 INFO L87 Difference]: Start difference. First operand 32291 states and 41276 transitions. Second operand has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:28,967 INFO L93 Difference]: Finished difference Result 94484 states and 120162 transitions. [2022-01-11 00:18:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 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 231 [2022-01-11 00:18:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:29,062 INFO L225 Difference]: With dead ends: 94484 [2022-01-11 00:18:29,062 INFO L226 Difference]: Without dead ends: 62328 [2022-01-11 00:18:29,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:29,104 INFO L933 BasicCegarLoop]: 2792 mSDtfsCounter, 1380 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:29,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1380 Valid, 4525 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:29,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62328 states. [2022-01-11 00:18:33,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62328 to 62324. [2022-01-11 00:18:33,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62324 states, 62322 states have (on average 1.2662944064696255) internal successors, (78918), 62323 states have internal predecessors, (78918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:33,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62324 states to 62324 states and 78918 transitions. [2022-01-11 00:18:33,179 INFO L78 Accepts]: Start accepts. Automaton has 62324 states and 78918 transitions. Word has length 231 [2022-01-11 00:18:33,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:33,180 INFO L470 AbstractCegarLoop]: Abstraction has 62324 states and 78918 transitions. [2022-01-11 00:18:33,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.0) internal successors, (231), 3 states have internal predecessors, (231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:33,180 INFO L276 IsEmpty]: Start isEmpty. Operand 62324 states and 78918 transitions. [2022-01-11 00:18:33,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-01-11 00:18:33,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:33,212 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:33,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-11 00:18:33,212 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:33,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:33,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1648670301, now seen corresponding path program 1 times [2022-01-11 00:18:33,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:33,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193314976] [2022-01-11 00:18:33,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:33,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:33,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:33,252 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:18:33,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:33,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193314976] [2022-01-11 00:18:33,253 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193314976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:33,253 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:33,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:33,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132966181] [2022-01-11 00:18:33,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:33,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:33,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:33,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:33,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:33,254 INFO L87 Difference]: Start difference. First operand 62324 states and 78918 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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) [2022-01-11 00:18:37,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:37,213 INFO L93 Difference]: Finished difference Result 124384 states and 157520 transitions. [2022-01-11 00:18:37,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:37,214 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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) Word has length 231 [2022-01-11 00:18:37,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:37,306 INFO L225 Difference]: With dead ends: 124384 [2022-01-11 00:18:37,306 INFO L226 Difference]: Without dead ends: 62195 [2022-01-11 00:18:37,357 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:37,358 INFO L933 BasicCegarLoop]: 1751 mSDtfsCounter, 1747 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1747 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:37,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1747 Valid, 1751 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:37,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62195 states. [2022-01-11 00:18:41,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62195 to 62195. [2022-01-11 00:18:41,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62195 states, 62193 states have (on average 1.2664286977634138) internal successors, (78763), 62194 states have internal predecessors, (78763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:41,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62195 states to 62195 states and 78763 transitions. [2022-01-11 00:18:41,283 INFO L78 Accepts]: Start accepts. Automaton has 62195 states and 78763 transitions. Word has length 231 [2022-01-11 00:18:41,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:41,283 INFO L470 AbstractCegarLoop]: Abstraction has 62195 states and 78763 transitions. [2022-01-11 00:18:41,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 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) [2022-01-11 00:18:41,283 INFO L276 IsEmpty]: Start isEmpty. Operand 62195 states and 78763 transitions. [2022-01-11 00:18:41,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-11 00:18:41,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:41,309 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:41,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-11 00:18:41,309 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:41,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:41,310 INFO L85 PathProgramCache]: Analyzing trace with hash -934744004, now seen corresponding path program 1 times [2022-01-11 00:18:41,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:41,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940956722] [2022-01-11 00:18:41,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:41,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:41,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:41,375 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-11 00:18:41,375 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:41,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940956722] [2022-01-11 00:18:41,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940956722] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:41,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:41,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:41,376 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136282376] [2022-01-11 00:18:41,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:41,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:41,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:41,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:41,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:41,377 INFO L87 Difference]: Start difference. First operand 62195 states and 78763 transitions. Second operand has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:48,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-11 00:18:48,521 INFO L93 Difference]: Finished difference Result 184843 states and 233495 transitions. [2022-01-11 00:18:48,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-11 00:18:48,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 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 232 [2022-01-11 00:18:48,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-11 00:18:48,761 INFO L225 Difference]: With dead ends: 184843 [2022-01-11 00:18:48,761 INFO L226 Difference]: Without dead ends: 122783 [2022-01-11 00:18:48,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:48,835 INFO L933 BasicCegarLoop]: 2109 mSDtfsCounter, 1597 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1597 SdHoareTripleChecker+Valid, 3827 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-11 00:18:48,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1597 Valid, 3827 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-11 00:18:48,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122783 states. [2022-01-11 00:18:56,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122783 to 120875. [2022-01-11 00:18:56,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 120875 states, 120873 states have (on average 1.2602566329949616) internal successors, (152331), 120874 states have internal predecessors, (152331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:56,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120875 states to 120875 states and 152331 transitions. [2022-01-11 00:18:56,791 INFO L78 Accepts]: Start accepts. Automaton has 120875 states and 152331 transitions. Word has length 232 [2022-01-11 00:18:56,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-11 00:18:56,791 INFO L470 AbstractCegarLoop]: Abstraction has 120875 states and 152331 transitions. [2022-01-11 00:18:56,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 77.33333333333333) internal successors, (232), 3 states have internal predecessors, (232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-11 00:18:56,791 INFO L276 IsEmpty]: Start isEmpty. Operand 120875 states and 152331 transitions. [2022-01-11 00:18:56,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-01-11 00:18:56,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-11 00:18:56,836 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-11 00:18:56,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-11 00:18:56,837 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-11 00:18:56,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-11 00:18:56,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1177420061, now seen corresponding path program 1 times [2022-01-11 00:18:56,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-11 00:18:56,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521577444] [2022-01-11 00:18:56,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-11 00:18:56,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-11 00:18:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-11 00:18:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-11 00:18:56,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-11 00:18:56,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521577444] [2022-01-11 00:18:56,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521577444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-11 00:18:56,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-11 00:18:56,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-11 00:18:56,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624620716] [2022-01-11 00:18:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-11 00:18:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-11 00:18:56,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-11 00:18:56,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-11 00:18:56,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-11 00:18:56,881 INFO L87 Difference]: Start difference. First operand 120875 states and 152331 transitions. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)