/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 01:59:42,884 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 01:59:42,918 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 01:59:42,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 01:59:42,963 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 01:59:42,967 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 01:59:42,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 01:59:42,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 01:59:42,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 01:59:42,985 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 01:59:42,986 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 01:59:42,988 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 01:59:42,988 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 01:59:42,990 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 01:59:42,992 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 01:59:42,993 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 01:59:42,994 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 01:59:42,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 01:59:42,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 01:59:43,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 01:59:43,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 01:59:43,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 01:59:43,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 01:59:43,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 01:59:43,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 01:59:43,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 01:59:43,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 01:59:43,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 01:59:43,024 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 01:59:43,055 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 01:59:43,055 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 01:59:43,055 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 01:59:43,055 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 01:59:43,056 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 01:59:43,056 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 01:59:43,056 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 01:59:43,057 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 01:59:43,057 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 01:59:43,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 01:59:43,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:43,059 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 01:59:43,059 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 01:59:43,060 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 01:59:43,060 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 01:59:43,267 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 01:59:43,293 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 01:59:43,296 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 01:59:43,297 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 01:59:43,300 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 01:59:43,301 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c [2022-01-10 01:59:43,376 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee8fd578/b6b3df90fa4446d1a730e7745facce1a/FLAGe36d54ab0 [2022-01-10 01:59:44,226 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 01:59:44,227 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c [2022-01-10 01:59:44,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee8fd578/b6b3df90fa4446d1a730e7745facce1a/FLAGe36d54ab0 [2022-01-10 01:59:44,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7ee8fd578/b6b3df90fa4446d1a730e7745facce1a [2022-01-10 01:59:44,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 01:59:44,378 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 01:59:44,382 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:44,382 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 01:59:44,384 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 01:59:44,385 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:44" (1/1) ... [2022-01-10 01:59:44,386 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d85c1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:44, skipping insertion in model container [2022-01-10 01:59:44,386 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 01:59:44" (1/1) ... [2022-01-10 01:59:44,391 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 01:59:44,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 01:59:46,225 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c[381679,381692] [2022-01-10 01:59:46,251 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c[383339,383352] [2022-01-10 01:59:46,465 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:46,473 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 01:59:47,210 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c[381679,381692] [2022-01-10 01:59:47,220 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label43+token_ring.08.cil-2.c[383339,383352] [2022-01-10 01:59:47,244 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 01:59:47,296 INFO L208 MainTranslator]: Completed translation [2022-01-10 01:59:47,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47 WrapperNode [2022-01-10 01:59:47,296 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 01:59:47,297 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:47,297 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 01:59:47,297 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 01:59:47,304 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,392 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,628 INFO L137 Inliner]: procedures = 60, calls = 66, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 12972 [2022-01-10 01:59:47,628 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 01:59:47,629 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 01:59:47,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 01:59:47,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 01:59:47,636 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,819 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,819 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:47,980 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:48,029 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:48,061 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:48,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 01:59:48,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 01:59:48,204 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 01:59:48,204 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 01:59:48,205 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (1/1) ... [2022-01-10 01:59:48,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 01:59:48,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 01:59:48,248 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 01:59:48,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 01:59:48,295 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 01:59:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 01:59:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 01:59:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 01:59:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 01:59:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 01:59:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 01:59:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 01:59:48,296 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 01:59:48,296 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 01:59:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 01:59:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 01:59:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 01:59:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 01:59:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 01:59:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 01:59:48,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 01:59:48,297 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 01:59:48,418 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 01:59:48,420 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 01:59:54,382 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 01:59:54,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 01:59:54,413 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2022-01-10 01:59:54,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:59:54 BoogieIcfgContainer [2022-01-10 01:59:54,417 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 01:59:54,419 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 01:59:54,419 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 01:59:54,422 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 01:59:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 01:59:44" (1/3) ... [2022-01-10 01:59:54,422 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2c3249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:59:54, skipping insertion in model container [2022-01-10 01:59:54,422 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 01:59:47" (2/3) ... [2022-01-10 01:59:54,423 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2c3249 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 01:59:54, skipping insertion in model container [2022-01-10 01:59:54,423 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 01:59:54" (3/3) ... [2022-01-10 01:59:54,424 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.08.cil-2.c [2022-01-10 01:59:54,428 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 01:59:54,428 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 01:59:54,478 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 01:59:54,485 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 01:59:54,485 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 01:59:54,535 INFO L276 IsEmpty]: Start isEmpty. Operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 01:59:54,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 01:59:54,549 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:54,550 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] [2022-01-10 01:59:54,550 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:54,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash -970277371, now seen corresponding path program 1 times [2022-01-10 01:59:54,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:54,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154689467] [2022-01-10 01:59:54,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:54,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:54,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 01:59:54,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 01:59:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 01:59:54,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 01:59:54,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:54,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:59:54,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:54,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154689467] [2022-01-10 01:59:54,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154689467] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:54,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:54,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 01:59:54,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906060139] [2022-01-10 01:59:54,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:54,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 01:59:54,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 01:59:54,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 01:59:54,965 INFO L87 Difference]: Start difference. First operand has 2473 states, 2439 states have (on average 1.848708487084871) internal successors, (4509), 2444 states have internal predecessors, (4509), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:56,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:56,265 INFO L93 Difference]: Finished difference Result 5037 states and 9272 transitions. [2022-01-10 01:59:56,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 01:59:56,268 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 01:59:56,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:56,296 INFO L225 Difference]: With dead ends: 5037 [2022-01-10 01:59:56,297 INFO L226 Difference]: Without dead ends: 2503 [2022-01-10 01:59:56,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-01-10 01:59:56,313 INFO L933 BasicCegarLoop]: 4511 mSDtfsCounter, 748 mSDsluCounter, 12379 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 16890 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:56,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [768 Valid, 16890 Invalid, 567 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [56 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 01:59:56,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2503 states. [2022-01-10 01:59:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2503 to 2405. [2022-01-10 01:59:56,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2373 states have (on average 1.8348082595870205) internal successors, (4354), 2376 states have internal predecessors, (4354), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-10 01:59:56,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4400 transitions. [2022-01-10 01:59:56,458 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4400 transitions. Word has length 135 [2022-01-10 01:59:56,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:56,458 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4400 transitions. [2022-01-10 01:59:56,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.8) internal successors, (124), 3 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:56,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4400 transitions. [2022-01-10 01:59:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 01:59:56,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:56,463 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] [2022-01-10 01:59:56,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 01:59:56,464 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:56,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash -540619065, now seen corresponding path program 1 times [2022-01-10 01:59:56,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:56,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643677124] [2022-01-10 01:59:56,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:56,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:56,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:56,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 01:59:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 01:59:56,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 01:59:56,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 01:59:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:56,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:59:56,671 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:56,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643677124] [2022-01-10 01:59:56,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643677124] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:56,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:56,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 01:59:56,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39297483] [2022-01-10 01:59:56,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:56,674 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 01:59:56,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 01:59:56,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 01:59:56,675 INFO L87 Difference]: Start difference. First operand 2405 states and 4400 transitions. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:58,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 01:59:58,760 INFO L93 Difference]: Finished difference Result 3147 states and 5591 transitions. [2022-01-10 01:59:58,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 01:59:58,760 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 01:59:58,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 01:59:58,771 INFO L225 Difference]: With dead ends: 3147 [2022-01-10 01:59:58,771 INFO L226 Difference]: Without dead ends: 2879 [2022-01-10 01:59:58,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 01:59:58,774 INFO L933 BasicCegarLoop]: 4478 mSDtfsCounter, 5066 mSDsluCounter, 12604 mSDsCounter, 0 mSdLazyCounter, 1435 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5081 SdHoareTripleChecker+Valid, 17082 SdHoareTripleChecker+Invalid, 1543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 1435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 01:59:58,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5081 Valid, 17082 Invalid, 1543 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 1435 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 01:59:58,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2879 states. [2022-01-10 01:59:58,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2879 to 2682. [2022-01-10 01:59:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2682 states, 2626 states have (on average 1.8111195734958112) internal successors, (4756), 2630 states have internal predecessors, (4756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (42), 39 states have call predecessors, (42), 39 states have call successors, (42) [2022-01-10 01:59:58,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2682 states to 2682 states and 4839 transitions. [2022-01-10 01:59:58,854 INFO L78 Accepts]: Start accepts. Automaton has 2682 states and 4839 transitions. Word has length 135 [2022-01-10 01:59:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 01:59:58,854 INFO L470 AbstractCegarLoop]: Abstraction has 2682 states and 4839 transitions. [2022-01-10 01:59:58,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 4 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 01:59:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2682 states and 4839 transitions. [2022-01-10 01:59:58,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 01:59:58,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 01:59:58,857 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] [2022-01-10 01:59:58,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 01:59:58,858 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 01:59:58,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 01:59:58,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1902621501, now seen corresponding path program 1 times [2022-01-10 01:59:58,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 01:59:58,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487525784] [2022-01-10 01:59:58,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 01:59:58,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 01:59:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 01:59:58,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:58,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 01:59:58,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:58,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 01:59:59,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:59,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 01:59:59,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:59,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 01:59:59,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 01:59:59,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 01:59:59,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 01:59:59,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487525784] [2022-01-10 01:59:59,048 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487525784] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 01:59:59,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 01:59:59,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 01:59:59,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117133197] [2022-01-10 01:59:59,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 01:59:59,049 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 01:59:59,049 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 01:59:59,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 01:59:59,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 01:59:59,050 INFO L87 Difference]: Start difference. First operand 2682 states and 4839 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:01,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:01,380 INFO L93 Difference]: Finished difference Result 3810 states and 6649 transitions. [2022-01-10 02:00:01,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:01,381 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:01,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:01,397 INFO L225 Difference]: With dead ends: 3810 [2022-01-10 02:00:01,397 INFO L226 Difference]: Without dead ends: 3265 [2022-01-10 02:00:01,403 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:01,408 INFO L933 BasicCegarLoop]: 4701 mSDtfsCounter, 5078 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2232 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5093 SdHoareTripleChecker+Valid, 21976 SdHoareTripleChecker+Invalid, 2304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 2232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:01,409 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5093 Valid, 21976 Invalid, 2304 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [72 Valid, 2232 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:00:01,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3265 states. [2022-01-10 02:00:01,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3265 to 2940. [2022-01-10 02:00:01,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2940 states, 2860 states have (on average 1.7902097902097902) internal successors, (5120), 2865 states have internal predecessors, (5120), 58 states have call successors, (58), 19 states have call predecessors, (58), 20 states have return successors, (61), 57 states have call predecessors, (61), 56 states have call successors, (61) [2022-01-10 02:00:01,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2940 states to 2940 states and 5239 transitions. [2022-01-10 02:00:01,520 INFO L78 Accepts]: Start accepts. Automaton has 2940 states and 5239 transitions. Word has length 135 [2022-01-10 02:00:01,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:01,520 INFO L470 AbstractCegarLoop]: Abstraction has 2940 states and 5239 transitions. [2022-01-10 02:00:01,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:01,521 INFO L276 IsEmpty]: Start isEmpty. Operand 2940 states and 5239 transitions. [2022-01-10 02:00:01,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:01,522 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:01,523 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] [2022-01-10 02:00:01,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:00:01,523 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:01,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:01,524 INFO L85 PathProgramCache]: Analyzing trace with hash 26310725, now seen corresponding path program 1 times [2022-01-10 02:00:01,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:01,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930472520] [2022-01-10 02:00:01,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:01,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:01,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:01,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:01,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:01,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:01,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:01,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930472520] [2022-01-10 02:00:01,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930472520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:01,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:01,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:01,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966095739] [2022-01-10 02:00:01,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:01,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:01,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:01,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:01,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:01,666 INFO L87 Difference]: Start difference. First operand 2940 states and 5239 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:03,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:03,705 INFO L93 Difference]: Finished difference Result 4787 states and 8197 transitions. [2022-01-10 02:00:03,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:03,706 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:03,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:03,729 INFO L225 Difference]: With dead ends: 4787 [2022-01-10 02:00:03,729 INFO L226 Difference]: Without dead ends: 3984 [2022-01-10 02:00:03,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:03,740 INFO L933 BasicCegarLoop]: 4506 mSDtfsCounter, 5157 mSDsluCounter, 16785 mSDsCounter, 0 mSdLazyCounter, 1982 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5172 SdHoareTripleChecker+Valid, 21291 SdHoareTripleChecker+Invalid, 2089 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1982 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:03,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5172 Valid, 21291 Invalid, 2089 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1982 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:00:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3984 states. [2022-01-10 02:00:03,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3984 to 3457. [2022-01-10 02:00:03,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3457 states, 3329 states have (on average 1.756984079303094) internal successors, (5849), 3336 states have internal predecessors, (5849), 92 states have call successors, (92), 31 states have call predecessors, (92), 34 states have return successors, (103), 93 states have call predecessors, (103), 90 states have call successors, (103) [2022-01-10 02:00:03,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3457 states to 3457 states and 6044 transitions. [2022-01-10 02:00:03,987 INFO L78 Accepts]: Start accepts. Automaton has 3457 states and 6044 transitions. Word has length 135 [2022-01-10 02:00:03,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:03,988 INFO L470 AbstractCegarLoop]: Abstraction has 3457 states and 6044 transitions. [2022-01-10 02:00:03,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:03,990 INFO L276 IsEmpty]: Start isEmpty. Operand 3457 states and 6044 transitions. [2022-01-10 02:00:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:03,994 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:03,995 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] [2022-01-10 02:00:03,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:00:03,995 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:03,996 INFO L85 PathProgramCache]: Analyzing trace with hash 2028196995, now seen corresponding path program 1 times [2022-01-10 02:00:03,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:03,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074333263] [2022-01-10 02:00:03,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:03,997 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:04,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:04,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:04,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:04,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:04,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:04,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:04,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074333263] [2022-01-10 02:00:04,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074333263] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:04,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:04,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:04,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704472643] [2022-01-10 02:00:04,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:04,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:04,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:04,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:04,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:04,133 INFO L87 Difference]: Start difference. First operand 3457 states and 6044 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:06,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:06,156 INFO L93 Difference]: Finished difference Result 6668 states and 11162 transitions. [2022-01-10 02:00:06,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:06,157 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:06,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:06,181 INFO L225 Difference]: With dead ends: 6668 [2022-01-10 02:00:06,182 INFO L226 Difference]: Without dead ends: 5348 [2022-01-10 02:00:06,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:06,188 INFO L933 BasicCegarLoop]: 4689 mSDtfsCounter, 5073 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2231 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5088 SdHoareTripleChecker+Valid, 21964 SdHoareTripleChecker+Invalid, 2308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 2231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:06,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5088 Valid, 21964 Invalid, 2308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 2231 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:00:06,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-01-10 02:00:06,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 4492. [2022-01-10 02:00:06,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4492 states, 4268 states have (on average 1.7120431115276475) internal successors, (7307), 4279 states have internal predecessors, (7307), 160 states have call successors, (160), 55 states have call predecessors, (160), 62 states have return successors, (193), 165 states have call predecessors, (193), 158 states have call successors, (193) [2022-01-10 02:00:06,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4492 states to 4492 states and 7660 transitions. [2022-01-10 02:00:06,388 INFO L78 Accepts]: Start accepts. Automaton has 4492 states and 7660 transitions. Word has length 135 [2022-01-10 02:00:06,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:06,389 INFO L470 AbstractCegarLoop]: Abstraction has 4492 states and 7660 transitions. [2022-01-10 02:00:06,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:06,390 INFO L276 IsEmpty]: Start isEmpty. Operand 4492 states and 7660 transitions. [2022-01-10 02:00:06,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:06,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:06,393 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] [2022-01-10 02:00:06,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:00:06,393 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:06,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:06,394 INFO L85 PathProgramCache]: Analyzing trace with hash -539625339, now seen corresponding path program 1 times [2022-01-10 02:00:06,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:06,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198004031] [2022-01-10 02:00:06,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:06,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:06,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:06,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:06,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:06,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:06,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:06,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:06,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198004031] [2022-01-10 02:00:06,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198004031] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:06,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:06,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:06,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489175104] [2022-01-10 02:00:06,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:06,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:06,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:06,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:06,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:06,530 INFO L87 Difference]: Start difference. First operand 4492 states and 7660 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:08,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:08,755 INFO L93 Difference]: Finished difference Result 10422 states and 17096 transitions. [2022-01-10 02:00:08,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:08,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:08,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:08,799 INFO L225 Difference]: With dead ends: 10422 [2022-01-10 02:00:08,799 INFO L226 Difference]: Without dead ends: 8067 [2022-01-10 02:00:08,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:08,810 INFO L933 BasicCegarLoop]: 4681 mSDtfsCounter, 5068 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2211 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5083 SdHoareTripleChecker+Valid, 21956 SdHoareTripleChecker+Invalid, 2289 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:08,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5083 Valid, 21956 Invalid, 2289 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2211 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:00:08,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8067 states. [2022-01-10 02:00:09,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8067 to 6576. [2022-01-10 02:00:09,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6576 states, 6160 states have (on average 1.663474025974026) internal successors, (10247), 6179 states have internal predecessors, (10247), 296 states have call successors, (296), 103 states have call predecessors, (296), 118 states have return successors, (391), 309 states have call predecessors, (391), 294 states have call successors, (391) [2022-01-10 02:00:09,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6576 states to 6576 states and 10934 transitions. [2022-01-10 02:00:09,132 INFO L78 Accepts]: Start accepts. Automaton has 6576 states and 10934 transitions. Word has length 135 [2022-01-10 02:00:09,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:09,132 INFO L470 AbstractCegarLoop]: Abstraction has 6576 states and 10934 transitions. [2022-01-10 02:00:09,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:09,133 INFO L276 IsEmpty]: Start isEmpty. Operand 6576 states and 10934 transitions. [2022-01-10 02:00:09,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:09,137 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:09,137 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] [2022-01-10 02:00:09,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:00:09,137 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:09,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:09,138 INFO L85 PathProgramCache]: Analyzing trace with hash 2107979015, now seen corresponding path program 1 times [2022-01-10 02:00:09,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:09,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1703696720] [2022-01-10 02:00:09,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:09,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:09,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:09,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:09,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:09,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1703696720] [2022-01-10 02:00:09,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1703696720] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:09,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:09,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:09,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589221628] [2022-01-10 02:00:09,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:09,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:09,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:09,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:09,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:09,278 INFO L87 Difference]: Start difference. First operand 6576 states and 10934 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:11,819 INFO L93 Difference]: Finished difference Result 17948 states and 29056 transitions. [2022-01-10 02:00:11,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:11,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:11,876 INFO L225 Difference]: With dead ends: 17948 [2022-01-10 02:00:11,876 INFO L226 Difference]: Without dead ends: 13509 [2022-01-10 02:00:11,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:11,899 INFO L933 BasicCegarLoop]: 4676 mSDtfsCounter, 5067 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2203 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5082 SdHoareTripleChecker+Valid, 21951 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:11,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5082 Valid, 21951 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 2203 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-10 02:00:11,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13509 states. [2022-01-10 02:00:12,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13509 to 10757. [2022-01-10 02:00:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6214723310234007) internal successors, (16145), 9992 states have internal predecessors, (16145), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-01-10 02:00:12,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17554 transitions. [2022-01-10 02:00:12,583 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17554 transitions. Word has length 135 [2022-01-10 02:00:12,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:12,583 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17554 transitions. [2022-01-10 02:00:12,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:12,584 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17554 transitions. [2022-01-10 02:00:12,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:12,591 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:12,591 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] [2022-01-10 02:00:12,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:00:12,592 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:12,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:12,592 INFO L85 PathProgramCache]: Analyzing trace with hash -23371707, now seen corresponding path program 1 times [2022-01-10 02:00:12,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:12,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246739377] [2022-01-10 02:00:12,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:12,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:12,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:12,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:12,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:12,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:12,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:12,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:12,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:12,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:12,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246739377] [2022-01-10 02:00:12,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [246739377] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:12,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:12,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:12,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360808831] [2022-01-10 02:00:12,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:12,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:12,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:12,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:12,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:12,728 INFO L87 Difference]: Start difference. First operand 10757 states and 17554 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:14,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:14,316 INFO L93 Difference]: Finished difference Result 22268 states and 36159 transitions. [2022-01-10 02:00:14,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:00:14,317 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:14,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:14,372 INFO L225 Difference]: With dead ends: 22268 [2022-01-10 02:00:14,372 INFO L226 Difference]: Without dead ends: 13648 [2022-01-10 02:00:14,405 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:00:14,406 INFO L933 BasicCegarLoop]: 4410 mSDtfsCounter, 4885 mSDsluCounter, 12434 mSDsCounter, 0 mSdLazyCounter, 923 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4901 SdHoareTripleChecker+Valid, 16844 SdHoareTripleChecker+Invalid, 1028 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 923 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:14,406 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4901 Valid, 16844 Invalid, 1028 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 923 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:00:14,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13648 states. [2022-01-10 02:00:15,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13648 to 10757. [2022-01-10 02:00:15,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10757 states, 9957 states have (on average 1.6181580797428945) internal successors, (16112), 9992 states have internal predecessors, (16112), 568 states have call successors, (568), 199 states have call predecessors, (568), 230 states have return successors, (841), 597 states have call predecessors, (841), 566 states have call successors, (841) [2022-01-10 02:00:15,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 17521 transitions. [2022-01-10 02:00:15,163 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 17521 transitions. Word has length 135 [2022-01-10 02:00:15,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:15,163 INFO L470 AbstractCegarLoop]: Abstraction has 10757 states and 17521 transitions. [2022-01-10 02:00:15,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:15,163 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 17521 transitions. [2022-01-10 02:00:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:15,172 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:15,172 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] [2022-01-10 02:00:15,172 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:00:15,172 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1061956281, now seen corresponding path program 1 times [2022-01-10 02:00:15,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [262439510] [2022-01-10 02:00:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:15,173 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:15,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:15,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:15,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:15,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [262439510] [2022-01-10 02:00:15,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [262439510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:15,304 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:15,304 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:15,304 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022079398] [2022-01-10 02:00:15,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:15,305 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:15,305 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:15,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:15,306 INFO L87 Difference]: Start difference. First operand 10757 states and 17521 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:18,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:18,541 INFO L93 Difference]: Finished difference Result 32965 states and 52934 transitions. [2022-01-10 02:00:18,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:00:18,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:18,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:18,641 INFO L225 Difference]: With dead ends: 32965 [2022-01-10 02:00:18,642 INFO L226 Difference]: Without dead ends: 24345 [2022-01-10 02:00:18,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:00:18,678 INFO L933 BasicCegarLoop]: 4665 mSDtfsCounter, 5059 mSDsluCounter, 17275 mSDsCounter, 0 mSdLazyCounter, 2176 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5074 SdHoareTripleChecker+Valid, 21940 SdHoareTripleChecker+Invalid, 2254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 2176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:18,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5074 Valid, 21940 Invalid, 2254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [78 Valid, 2176 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:00:18,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24345 states. [2022-01-10 02:00:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24345 to 19183. [2022-01-10 02:00:19,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19183 states, 17615 states have (on average 1.587056485949475) internal successors, (27956), 17682 states have internal predecessors, (27956), 1112 states have call successors, (1112), 391 states have call predecessors, (1112), 454 states have return successors, (1903), 1173 states have call predecessors, (1903), 1110 states have call successors, (1903) [2022-01-10 02:00:19,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19183 states to 19183 states and 30971 transitions. [2022-01-10 02:00:19,786 INFO L78 Accepts]: Start accepts. Automaton has 19183 states and 30971 transitions. Word has length 135 [2022-01-10 02:00:19,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:19,787 INFO L470 AbstractCegarLoop]: Abstraction has 19183 states and 30971 transitions. [2022-01-10 02:00:19,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:19,787 INFO L276 IsEmpty]: Start isEmpty. Operand 19183 states and 30971 transitions. [2022-01-10 02:00:19,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:19,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:19,799 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] [2022-01-10 02:00:19,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:00:19,800 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:19,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:19,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1259845637, now seen corresponding path program 1 times [2022-01-10 02:00:19,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:19,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420291754] [2022-01-10 02:00:19,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:19,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:19,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:19,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:19,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:20,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:20,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:20,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:20,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:20,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:20,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:20,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:20,058 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:20,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420291754] [2022-01-10 02:00:20,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420291754] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:20,059 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:20,059 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:20,059 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215744414] [2022-01-10 02:00:20,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:20,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:20,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:20,060 INFO L87 Difference]: Start difference. First operand 19183 states and 30971 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:25,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:00:25,454 INFO L93 Difference]: Finished difference Result 70813 states and 113344 transitions. [2022-01-10 02:00:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-10 02:00:25,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 135 [2022-01-10 02:00:25,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:00:25,696 INFO L225 Difference]: With dead ends: 70813 [2022-01-10 02:00:25,696 INFO L226 Difference]: Without dead ends: 53767 [2022-01-10 02:00:25,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:00:25,758 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5388 mSDsluCounter, 17267 mSDsCounter, 0 mSdLazyCounter, 2161 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5412 SdHoareTripleChecker+Valid, 21925 SdHoareTripleChecker+Invalid, 2244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:00:25,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5412 Valid, 21925 Invalid, 2244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2161 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:00:25,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53767 states. [2022-01-10 02:00:28,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53767 to 35904. [2022-01-10 02:00:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35904 states, 32864 states have (on average 1.5702896786757545) internal successors, (51606), 32995 states have internal predecessors, (51606), 2136 states have call successors, (2136), 775 states have call predecessors, (2136), 902 states have return successors, (4449), 2261 states have call predecessors, (4449), 2134 states have call successors, (4449) [2022-01-10 02:00:28,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35904 states to 35904 states and 58191 transitions. [2022-01-10 02:00:28,385 INFO L78 Accepts]: Start accepts. Automaton has 35904 states and 58191 transitions. Word has length 135 [2022-01-10 02:00:28,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:00:28,385 INFO L470 AbstractCegarLoop]: Abstraction has 35904 states and 58191 transitions. [2022-01-10 02:00:28,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:00:28,385 INFO L276 IsEmpty]: Start isEmpty. Operand 35904 states and 58191 transitions. [2022-01-10 02:00:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-01-10 02:00:28,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:00:28,408 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] [2022-01-10 02:00:28,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:00:28,409 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:00:28,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:00:28,409 INFO L85 PathProgramCache]: Analyzing trace with hash -882014841, now seen corresponding path program 1 times [2022-01-10 02:00:28,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:00:28,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093145370] [2022-01-10 02:00:28,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:00:28,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:00:28,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:00:28,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-01-10 02:00:28,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:00:28,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:00:28,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-01-10 02:00:28,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:00:28,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:00:28,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:00:28,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093145370] [2022-01-10 02:00:28,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093145370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:00:28,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:00:28,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:00:28,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279199652] [2022-01-10 02:00:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:00:28,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:00:28,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:00:28,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:00:28,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:00:28,519 INFO L87 Difference]: Start difference. First operand 35904 states and 58191 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 5 states have internal predecessors, (124), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)