/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_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:40:20,972 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:40:20,974 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:40:21,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:40:21,026 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:40:21,027 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:40:21,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:40:21,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:40:21,031 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:40:21,032 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:40:21,032 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:40:21,033 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:40:21,034 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:40:21,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:40:21,035 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:40:21,036 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:40:21,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:40:21,037 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:40:21,039 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:40:21,040 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:40:21,041 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:40:21,045 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:40:21,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:40:21,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:40:21,049 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:40:21,052 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:40:21,052 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:40:21,053 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:40:21,053 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:40:21,054 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:40:21,055 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:40:21,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:40:21,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:40:21,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:40:21,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:40:21,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:40:21,066 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:40:21,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:40:21,094 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:40:21,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:40:21,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:40:21,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:40:21,096 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:40:21,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:40:21,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:40:21,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:40:21,097 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:40:21,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:40:21,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:40:21,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:40:21,099 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:40:21,100 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:40:21,100 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:40:21,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:40:21,355 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:40:21,359 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:40:21,360 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:40:21,361 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:40:21,362 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-10 07:40:21,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e52b780/0b9072f0ff8a4c92bf461563a18f5209/FLAG488876023 [2022-01-10 07:40:22,331 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:40:22,332 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c [2022-01-10 07:40:22,383 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e52b780/0b9072f0ff8a4c92bf461563a18f5209/FLAG488876023 [2022-01-10 07:40:22,445 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96e52b780/0b9072f0ff8a4c92bf461563a18f5209 [2022-01-10 07:40:22,448 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:40:22,449 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:40:22,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:40:22,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:40:22,455 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:40:22,455 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:40:22" (1/1) ... [2022-01-10 07:40:22,456 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d97904e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:22, skipping insertion in model container [2022-01-10 07:40:22,456 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:40:22" (1/1) ... [2022-01-10 07:40:22,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:40:22,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:40:24,304 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-10 07:40:24,329 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-10 07:40:24,521 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:40:24,531 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:40:25,299 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[378560,378573] [2022-01-10 07:40:25,307 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label42+token_ring.07.cil-1.c[383339,383352] [2022-01-10 07:40:25,333 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:40:25,383 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:40:25,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25 WrapperNode [2022-01-10 07:40:25,384 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:40:25,385 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:40:25,385 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:40:25,385 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:40:25,391 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:25,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:25,814 INFO L137 Inliner]: procedures = 59, calls = 62, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 12877 [2022-01-10 07:40:25,815 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:40:25,815 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:40:25,816 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:40:25,816 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:40:25,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:25,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:25,978 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:25,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:26,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:26,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:26,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:26,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:40:26,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:40:26,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:40:26,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:40:26,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (1/1) ... [2022-01-10 07:40:26,335 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:40:26,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:40:26,356 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 07:40:26,381 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 07:40:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:40:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:40:26,404 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:40:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:40:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:40:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:40:26,405 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:40:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:40:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:40:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:40:26,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:40:26,529 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:40:26,530 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:40:34,399 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:40:34,428 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:40:34,428 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 07:40:34,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:40:34 BoogieIcfgContainer [2022-01-10 07:40:34,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:40:34,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:40:34,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:40:34,438 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:40:34,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:40:22" (1/3) ... [2022-01-10 07:40:34,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58fa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:40:34, skipping insertion in model container [2022-01-10 07:40:34,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:40:25" (2/3) ... [2022-01-10 07:40:34,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f58fa1d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:40:34, skipping insertion in model container [2022-01-10 07:40:34,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:40:34" (3/3) ... [2022-01-10 07:40:34,440 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label42+token_ring.07.cil-1.c [2022-01-10 07:40:34,444 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:40:34,445 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:40:34,499 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:40:34,504 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 07:40:34,504 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:40:34,562 INFO L276 IsEmpty]: Start isEmpty. Operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 07:40:34,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:34,575 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:34,576 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] [2022-01-10 07:40:34,576 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:34,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:34,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1176565078, now seen corresponding path program 1 times [2022-01-10 07:40:34,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:34,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758954867] [2022-01-10 07:40:34,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:34,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:34,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:34,600 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:34,601 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:40:34,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:34,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:34,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:35,032 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 07:40:35,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:35,033 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:35,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758954867] [2022-01-10 07:40:35,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758954867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:35,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:35,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:35,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111783713] [2022-01-10 07:40:35,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:35,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:35,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:35,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:35,074 INFO L87 Difference]: Start difference. First operand has 2440 states, 2410 states have (on average 1.849792531120332) internal successors, (4458), 2413 states have internal predecessors, (4458), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:35,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:35,242 INFO L93 Difference]: Finished difference Result 4868 states and 8977 transitions. [2022-01-10 07:40:35,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:35,244 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:35,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:35,269 INFO L225 Difference]: With dead ends: 4868 [2022-01-10 07:40:35,269 INFO L226 Difference]: Without dead ends: 2373 [2022-01-10 07:40:35,279 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:35,282 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 380 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 8437 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:35,283 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 8437 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:35,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2373 states. [2022-01-10 07:40:35,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2373 to 2373. [2022-01-10 07:40:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2373 states, 2344 states have (on average 1.83660409556314) internal successors, (4305), 2346 states have internal predecessors, (4305), 21 states have call successors, (21), 6 states have call predecessors, (21), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 07:40:35,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2373 states to 2373 states and 4347 transitions. [2022-01-10 07:40:35,403 INFO L78 Accepts]: Start accepts. Automaton has 2373 states and 4347 transitions. Word has length 123 [2022-01-10 07:40:35,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:35,404 INFO L470 AbstractCegarLoop]: Abstraction has 2373 states and 4347 transitions. [2022-01-10 07:40:35,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:35,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2373 states and 4347 transitions. [2022-01-10 07:40:35,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:35,415 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:35,416 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] [2022-01-10 07:40:35,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:35,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:35,627 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:35,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:35,628 INFO L85 PathProgramCache]: Analyzing trace with hash 796600300, now seen corresponding path program 1 times [2022-01-10 07:40:35,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:35,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1020547238] [2022-01-10 07:40:35,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:35,629 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:35,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:35,631 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:35,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:40:35,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:35,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:35,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:36,011 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 07:40:36,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:36,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:36,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1020547238] [2022-01-10 07:40:36,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1020547238] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:36,016 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:36,016 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:36,016 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511044655] [2022-01-10 07:40:36,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:36,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:36,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:36,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:36,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:36,020 INFO L87 Difference]: Start difference. First operand 2373 states and 4347 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:36,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:36,660 INFO L93 Difference]: Finished difference Result 2875 states and 5135 transitions. [2022-01-10 07:40:36,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:36,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:36,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:36,673 INFO L225 Difference]: With dead ends: 2875 [2022-01-10 07:40:36,673 INFO L226 Difference]: Without dead ends: 2638 [2022-01-10 07:40:36,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:36,675 INFO L933 BasicCegarLoop]: 4377 mSDtfsCounter, 4680 mSDsluCounter, 8677 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 13054 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:36,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 13054 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:40:36,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-01-10 07:40:36,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2619. [2022-01-10 07:40:36,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8137904168289833) internal successors, (4656), 2570 states have internal predecessors, (4656), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:36,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4731 transitions. [2022-01-10 07:40:36,734 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4731 transitions. Word has length 123 [2022-01-10 07:40:36,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:36,734 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4731 transitions. [2022-01-10 07:40:36,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:36,735 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4731 transitions. [2022-01-10 07:40:36,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:36,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:36,736 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] [2022-01-10 07:40:36,750 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:36,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:36,951 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:36,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:36,951 INFO L85 PathProgramCache]: Analyzing trace with hash 71036272, now seen corresponding path program 1 times [2022-01-10 07:40:36,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:36,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698927578] [2022-01-10 07:40:36,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:36,953 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:36,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:36,954 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:36,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:40:37,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:37,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:37,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:37,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:40:37,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:37,321 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:37,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698927578] [2022-01-10 07:40:37,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698927578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:37,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:37,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:37,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596341237] [2022-01-10 07:40:37,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:37,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:37,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:37,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:37,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:37,324 INFO L87 Difference]: Start difference. First operand 2619 states and 4731 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:37,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:37,630 INFO L93 Difference]: Finished difference Result 3102 states and 5487 transitions. [2022-01-10 07:40:37,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:37,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:37,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:37,647 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:37,647 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:37,652 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:37,654 INFO L933 BasicCegarLoop]: 4320 mSDtfsCounter, 4471 mSDsluCounter, 8331 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4486 SdHoareTripleChecker+Valid, 12651 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:37,655 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4486 Valid, 12651 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:37,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:37,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:37,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8110634982469809) internal successors, (4649), 2570 states have internal predecessors, (4649), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:37,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4724 transitions. [2022-01-10 07:40:37,731 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4724 transitions. Word has length 123 [2022-01-10 07:40:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:37,731 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4724 transitions. [2022-01-10 07:40:37,731 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:37,731 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4724 transitions. [2022-01-10 07:40:37,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:37,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:37,733 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] [2022-01-10 07:40:37,741 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:37,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:37,940 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:37,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:37,940 INFO L85 PathProgramCache]: Analyzing trace with hash -783653012, now seen corresponding path program 1 times [2022-01-10 07:40:37,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:37,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [755107962] [2022-01-10 07:40:37,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:37,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:37,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:37,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:37,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:40:38,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:38,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 332 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:38,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:38,292 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 07:40:38,292 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:38,292 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:38,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [755107962] [2022-01-10 07:40:38,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [755107962] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:38,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:38,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:38,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136986234] [2022-01-10 07:40:38,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:38,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:38,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:38,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:38,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:38,295 INFO L87 Difference]: Start difference. First operand 2619 states and 4724 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:38,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:38,626 INFO L93 Difference]: Finished difference Result 3102 states and 5473 transitions. [2022-01-10 07:40:38,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:38,626 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:38,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:38,638 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:38,638 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:38,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:38,641 INFO L933 BasicCegarLoop]: 4317 mSDtfsCounter, 4465 mSDsluCounter, 8327 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4480 SdHoareTripleChecker+Valid, 12644 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:38,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4480 Valid, 12644 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:38,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:38,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8083365796649786) internal successors, (4642), 2570 states have internal predecessors, (4642), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:38,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4717 transitions. [2022-01-10 07:40:38,704 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4717 transitions. Word has length 123 [2022-01-10 07:40:38,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:38,705 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4717 transitions. [2022-01-10 07:40:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4717 transitions. [2022-01-10 07:40:38,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:38,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:38,709 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] [2022-01-10 07:40:38,727 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:38,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:38,920 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:38,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:38,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1405533680, now seen corresponding path program 1 times [2022-01-10 07:40:38,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:38,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [187018798] [2022-01-10 07:40:38,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:38,921 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:38,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:38,922 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:38,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:40:39,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:39,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:39,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:39,231 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 07:40:39,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:39,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:39,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [187018798] [2022-01-10 07:40:39,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [187018798] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:39,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:39,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:39,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696720515] [2022-01-10 07:40:39,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:39,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:39,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:39,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:39,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:39,233 INFO L87 Difference]: Start difference. First operand 2619 states and 4717 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:39,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:39,551 INFO L93 Difference]: Finished difference Result 3102 states and 5459 transitions. [2022-01-10 07:40:39,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:39,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:39,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:39,562 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:39,563 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:39,565 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:39,566 INFO L933 BasicCegarLoop]: 4314 mSDtfsCounter, 4459 mSDsluCounter, 8323 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4474 SdHoareTripleChecker+Valid, 12637 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:39,566 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4474 Valid, 12637 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:39,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:39,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:39,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8056096610829762) internal successors, (4635), 2570 states have internal predecessors, (4635), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:39,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4710 transitions. [2022-01-10 07:40:39,632 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4710 transitions. Word has length 123 [2022-01-10 07:40:39,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:39,632 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4710 transitions. [2022-01-10 07:40:39,632 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:39,633 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4710 transitions. [2022-01-10 07:40:39,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:39,634 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:39,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:39,650 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:39,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:39,844 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:39,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:39,845 INFO L85 PathProgramCache]: Analyzing trace with hash -186415380, now seen corresponding path program 1 times [2022-01-10 07:40:39,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:39,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2117069397] [2022-01-10 07:40:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:39,846 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:39,846 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:39,847 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:39,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:40:39,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:39,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:39,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:40,259 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 07:40:40,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:40,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:40,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2117069397] [2022-01-10 07:40:40,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2117069397] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:40,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:40,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:40,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458352581] [2022-01-10 07:40:40,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:40,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:40,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:40,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:40,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:40,261 INFO L87 Difference]: Start difference. First operand 2619 states and 4710 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:40,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:40,559 INFO L93 Difference]: Finished difference Result 3102 states and 5445 transitions. [2022-01-10 07:40:40,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:40,561 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:40,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:40,571 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:40,571 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:40,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:40,575 INFO L933 BasicCegarLoop]: 4311 mSDtfsCounter, 4453 mSDsluCounter, 8319 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4468 SdHoareTripleChecker+Valid, 12630 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:40,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4468 Valid, 12630 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:40,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:40,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.802882742500974) internal successors, (4628), 2570 states have internal predecessors, (4628), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:40,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4703 transitions. [2022-01-10 07:40:40,653 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4703 transitions. Word has length 123 [2022-01-10 07:40:40,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:40,653 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4703 transitions. [2022-01-10 07:40:40,654 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:40,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4703 transitions. [2022-01-10 07:40:40,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:40,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:40,655 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] [2022-01-10 07:40:40,665 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:40:40,865 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:40,866 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:40,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:40,866 INFO L85 PathProgramCache]: Analyzing trace with hash -791957904, now seen corresponding path program 1 times [2022-01-10 07:40:40,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:40,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625665819] [2022-01-10 07:40:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:40,867 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:40,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:40,868 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:40,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:40:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:40,961 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:40,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:41,144 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 07:40:41,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:41,144 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:41,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625665819] [2022-01-10 07:40:41,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625665819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:41,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:41,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:41,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447795822] [2022-01-10 07:40:41,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:41,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:41,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:41,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:41,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:41,146 INFO L87 Difference]: Start difference. First operand 2619 states and 4703 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:41,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:41,444 INFO L93 Difference]: Finished difference Result 3102 states and 5431 transitions. [2022-01-10 07:40:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:41,445 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:41,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:41,459 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:41,460 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:41,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:41,462 INFO L933 BasicCegarLoop]: 4308 mSDtfsCounter, 4447 mSDsluCounter, 8315 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4462 SdHoareTripleChecker+Valid, 12623 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:41,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4462 Valid, 12623 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:41,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:41,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:41,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.8001558239189717) internal successors, (4621), 2570 states have internal predecessors, (4621), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:41,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4696 transitions. [2022-01-10 07:40:41,526 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4696 transitions. Word has length 123 [2022-01-10 07:40:41,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:41,526 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4696 transitions. [2022-01-10 07:40:41,526 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:41,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4696 transitions. [2022-01-10 07:40:41,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:41,527 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:41,528 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] [2022-01-10 07:40:41,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:41,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:41,739 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:41,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:41,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1128171116, now seen corresponding path program 1 times [2022-01-10 07:40:41,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:41,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1750662222] [2022-01-10 07:40:41,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:41,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:41,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:41,741 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:41,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:40:41,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:41,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:41,847 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:42,026 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 07:40:42,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:42,026 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:42,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1750662222] [2022-01-10 07:40:42,026 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1750662222] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:42,026 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:42,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:42,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317580591] [2022-01-10 07:40:42,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:42,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:42,027 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:42,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:42,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:42,028 INFO L87 Difference]: Start difference. First operand 2619 states and 4696 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:42,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:42,327 INFO L93 Difference]: Finished difference Result 3102 states and 5417 transitions. [2022-01-10 07:40:42,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:40:42,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:42,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:42,338 INFO L225 Difference]: With dead ends: 3102 [2022-01-10 07:40:42,338 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:40:42,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:42,341 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 4440 mSDsluCounter, 8311 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4455 SdHoareTripleChecker+Valid, 12616 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:42,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4455 Valid, 12616 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:42,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:40:42,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:40:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2567 states have (on average 1.7974289053369692) internal successors, (4614), 2570 states have internal predecessors, (4614), 37 states have call successors, (37), 12 states have call predecessors, (37), 13 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:40:42,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4689 transitions. [2022-01-10 07:40:42,393 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4689 transitions. Word has length 123 [2022-01-10 07:40:42,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:42,394 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4689 transitions. [2022-01-10 07:40:42,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:42,394 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4689 transitions. [2022-01-10 07:40:42,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:42,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:42,395 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] [2022-01-10 07:40:42,407 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:40:42,604 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:42,605 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:42,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:42,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1287705240, now seen corresponding path program 1 times [2022-01-10 07:40:42,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:42,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2126802955] [2022-01-10 07:40:42,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:42,606 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:42,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:42,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:42,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:40:42,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:42,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:42,719 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:42,911 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 07:40:42,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:42,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:42,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2126802955] [2022-01-10 07:40:42,912 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2126802955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:42,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:42,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:42,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408927364] [2022-01-10 07:40:42,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:42,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:42,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:42,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:42,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:42,913 INFO L87 Difference]: Start difference. First operand 2619 states and 4689 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:43,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:43,313 INFO L93 Difference]: Finished difference Result 3224 states and 5591 transitions. [2022-01-10 07:40:43,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:43,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:43,338 INFO L225 Difference]: With dead ends: 3224 [2022-01-10 07:40:43,339 INFO L226 Difference]: Without dead ends: 2741 [2022-01-10 07:40:43,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:43,343 INFO L933 BasicCegarLoop]: 4302 mSDtfsCounter, 4510 mSDsluCounter, 8306 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4525 SdHoareTripleChecker+Valid, 12608 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:43,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4525 Valid, 12608 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:43,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2741 states. [2022-01-10 07:40:43,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2741 to 2741. [2022-01-10 07:40:43,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2741 states, 2683 states have (on average 1.7774878866939992) internal successors, (4769), 2686 states have internal predecessors, (4769), 39 states have call successors, (39), 16 states have call predecessors, (39), 17 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:40:43,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 4848 transitions. [2022-01-10 07:40:43,402 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 4848 transitions. Word has length 123 [2022-01-10 07:40:43,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:43,403 INFO L470 AbstractCegarLoop]: Abstraction has 2741 states and 4848 transitions. [2022-01-10 07:40:43,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:43,403 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 4848 transitions. [2022-01-10 07:40:43,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:43,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:43,404 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] [2022-01-10 07:40:43,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:43,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:43,615 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:43,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:43,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1019407277, now seen corresponding path program 1 times [2022-01-10 07:40:43,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:43,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [781160066] [2022-01-10 07:40:43,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:43,616 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:43,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:43,618 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:43,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:40:43,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:43,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:43,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:43,899 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 07:40:43,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:43,899 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:43,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [781160066] [2022-01-10 07:40:43,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [781160066] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:43,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:43,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:43,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253073030] [2022-01-10 07:40:43,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:43,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:43,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:43,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:43,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:43,901 INFO L87 Difference]: Start difference. First operand 2741 states and 4848 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:44,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:44,388 INFO L93 Difference]: Finished difference Result 3468 states and 5909 transitions. [2022-01-10 07:40:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:44,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:44,397 INFO L225 Difference]: With dead ends: 3468 [2022-01-10 07:40:44,397 INFO L226 Difference]: Without dead ends: 2863 [2022-01-10 07:40:44,399 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:44,400 INFO L933 BasicCegarLoop]: 4300 mSDtfsCounter, 4503 mSDsluCounter, 8302 mSDsCounter, 0 mSdLazyCounter, 285 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4518 SdHoareTripleChecker+Valid, 12602 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 285 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:44,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4518 Valid, 12602 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 285 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:40:44,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2863 states. [2022-01-10 07:40:44,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2863 to 2863. [2022-01-10 07:40:44,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2863 states, 2799 states have (on average 1.757770632368703) internal successors, (4920), 2802 states have internal predecessors, (4920), 41 states have call successors, (41), 20 states have call predecessors, (41), 21 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 07:40:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2863 states to 2863 states and 5003 transitions. [2022-01-10 07:40:44,475 INFO L78 Accepts]: Start accepts. Automaton has 2863 states and 5003 transitions. Word has length 123 [2022-01-10 07:40:44,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:44,475 INFO L470 AbstractCegarLoop]: Abstraction has 2863 states and 5003 transitions. [2022-01-10 07:40:44,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:44,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2863 states and 5003 transitions. [2022-01-10 07:40:44,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:44,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:44,477 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] [2022-01-10 07:40:44,489 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:40:44,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:44,688 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:44,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:44,688 INFO L85 PathProgramCache]: Analyzing trace with hash 24715689, now seen corresponding path program 1 times [2022-01-10 07:40:44,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:44,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472010664] [2022-01-10 07:40:44,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:44,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:44,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:44,690 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:44,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:40:44,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:44,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:44,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:44,968 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 07:40:44,968 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:44,968 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:44,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472010664] [2022-01-10 07:40:44,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472010664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:44,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:44,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:44,969 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093818517] [2022-01-10 07:40:44,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:44,969 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:44,969 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:44,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:44,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:44,970 INFO L87 Difference]: Start difference. First operand 2863 states and 5003 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:45,372 INFO L93 Difference]: Finished difference Result 3712 states and 6219 transitions. [2022-01-10 07:40:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:45,373 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:45,379 INFO L225 Difference]: With dead ends: 3712 [2022-01-10 07:40:45,379 INFO L226 Difference]: Without dead ends: 2985 [2022-01-10 07:40:45,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:45,383 INFO L933 BasicCegarLoop]: 4295 mSDtfsCounter, 4497 mSDsluCounter, 8298 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4512 SdHoareTripleChecker+Valid, 12593 SdHoareTripleChecker+Invalid, 315 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:45,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4512 Valid, 12593 Invalid, 315 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:45,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2985 states. [2022-01-10 07:40:45,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2985 to 2985. [2022-01-10 07:40:45,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2985 states, 2915 states have (on average 1.7382504288164666) internal successors, (5067), 2918 states have internal predecessors, (5067), 43 states have call successors, (43), 24 states have call predecessors, (43), 25 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 07:40:45,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2985 states to 2985 states and 5154 transitions. [2022-01-10 07:40:45,474 INFO L78 Accepts]: Start accepts. Automaton has 2985 states and 5154 transitions. Word has length 123 [2022-01-10 07:40:45,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:45,475 INFO L470 AbstractCegarLoop]: Abstraction has 2985 states and 5154 transitions. [2022-01-10 07:40:45,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:45,475 INFO L276 IsEmpty]: Start isEmpty. Operand 2985 states and 5154 transitions. [2022-01-10 07:40:45,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:45,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:45,477 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] [2022-01-10 07:40:45,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:45,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:45,687 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:45,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:45,688 INFO L85 PathProgramCache]: Analyzing trace with hash -646329746, now seen corresponding path program 1 times [2022-01-10 07:40:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [119091382] [2022-01-10 07:40:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:45,688 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:45,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:45,689 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:45,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:40:45,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:45,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:45,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:45,943 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 07:40:45,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:45,943 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:45,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [119091382] [2022-01-10 07:40:45,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [119091382] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:45,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:45,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:45,944 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851451956] [2022-01-10 07:40:45,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:45,944 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:45,944 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:45,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:45,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:45,945 INFO L87 Difference]: Start difference. First operand 2985 states and 5154 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:46,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:46,359 INFO L93 Difference]: Finished difference Result 3956 states and 6521 transitions. [2022-01-10 07:40:46,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:46,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:46,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:46,367 INFO L225 Difference]: With dead ends: 3956 [2022-01-10 07:40:46,367 INFO L226 Difference]: Without dead ends: 3107 [2022-01-10 07:40:46,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:46,371 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4490 mSDsluCounter, 8294 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4505 SdHoareTripleChecker+Valid, 12586 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:46,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4505 Valid, 12586 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3107 states. [2022-01-10 07:40:46,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3107 to 3107. [2022-01-10 07:40:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3107 states, 3031 states have (on average 1.7189046519300561) internal successors, (5210), 3034 states have internal predecessors, (5210), 45 states have call successors, (45), 28 states have call predecessors, (45), 29 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 07:40:46,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5301 transitions. [2022-01-10 07:40:46,460 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5301 transitions. Word has length 123 [2022-01-10 07:40:46,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:46,460 INFO L470 AbstractCegarLoop]: Abstraction has 3107 states and 5301 transitions. [2022-01-10 07:40:46,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:46,461 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5301 transitions. [2022-01-10 07:40:46,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:46,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:46,462 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] [2022-01-10 07:40:46,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:46,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:46,672 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:46,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:46,673 INFO L85 PathProgramCache]: Analyzing trace with hash -261823893, now seen corresponding path program 1 times [2022-01-10 07:40:46,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:46,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096116633] [2022-01-10 07:40:46,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:46,673 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:46,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:46,674 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:46,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:40:46,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:46,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:46,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:46,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:40:46,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:46,935 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:46,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096116633] [2022-01-10 07:40:46,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096116633] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:46,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:46,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:46,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620241721] [2022-01-10 07:40:46,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:46,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:46,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:46,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:46,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:46,936 INFO L87 Difference]: Start difference. First operand 3107 states and 5301 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:47,298 INFO L93 Difference]: Finished difference Result 4200 states and 6815 transitions. [2022-01-10 07:40:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:47,298 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:47,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:47,306 INFO L225 Difference]: With dead ends: 4200 [2022-01-10 07:40:47,306 INFO L226 Difference]: Without dead ends: 3229 [2022-01-10 07:40:47,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:47,310 INFO L933 BasicCegarLoop]: 4289 mSDtfsCounter, 4483 mSDsluCounter, 8290 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4498 SdHoareTripleChecker+Valid, 12579 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:47,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4498 Valid, 12579 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:47,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3229 states. [2022-01-10 07:40:47,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3229 to 3229. [2022-01-10 07:40:47,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3229 states, 3147 states have (on average 1.6997140133460438) internal successors, (5349), 3150 states have internal predecessors, (5349), 47 states have call successors, (47), 32 states have call predecessors, (47), 33 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:40:47,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3229 states to 3229 states and 5444 transitions. [2022-01-10 07:40:47,420 INFO L78 Accepts]: Start accepts. Automaton has 3229 states and 5444 transitions. Word has length 123 [2022-01-10 07:40:47,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:47,422 INFO L470 AbstractCegarLoop]: Abstraction has 3229 states and 5444 transitions. [2022-01-10 07:40:47,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:47,422 INFO L276 IsEmpty]: Start isEmpty. Operand 3229 states and 5444 transitions. [2022-01-10 07:40:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:47,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:47,424 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:40:47,433 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:47,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:47,633 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:47,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1344196079, now seen corresponding path program 1 times [2022-01-10 07:40:47,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:47,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [730295879] [2022-01-10 07:40:47,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:47,635 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:47,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:47,636 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:47,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:40:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:47,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:47,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:47,900 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 07:40:47,900 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:47,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:47,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [730295879] [2022-01-10 07:40:47,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [730295879] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:47,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:47,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:47,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966430970] [2022-01-10 07:40:47,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:47,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:47,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:47,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:47,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:47,901 INFO L87 Difference]: Start difference. First operand 3229 states and 5444 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:48,261 INFO L93 Difference]: Finished difference Result 4444 states and 7101 transitions. [2022-01-10 07:40:48,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:48,269 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:48,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:48,276 INFO L225 Difference]: With dead ends: 4444 [2022-01-10 07:40:48,277 INFO L226 Difference]: Without dead ends: 3351 [2022-01-10 07:40:48,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:48,281 INFO L933 BasicCegarLoop]: 4286 mSDtfsCounter, 4476 mSDsluCounter, 8286 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4491 SdHoareTripleChecker+Valid, 12572 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:48,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4491 Valid, 12572 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:40:48,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3351 states. [2022-01-10 07:40:48,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3351 to 3351. [2022-01-10 07:40:48,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3351 states, 3263 states have (on average 1.680661967514557) internal successors, (5484), 3266 states have internal predecessors, (5484), 49 states have call successors, (49), 36 states have call predecessors, (49), 37 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:40:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3351 states to 3351 states and 5583 transitions. [2022-01-10 07:40:48,366 INFO L78 Accepts]: Start accepts. Automaton has 3351 states and 5583 transitions. Word has length 123 [2022-01-10 07:40:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:48,367 INFO L470 AbstractCegarLoop]: Abstraction has 3351 states and 5583 transitions. [2022-01-10 07:40:48,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 3351 states and 5583 transitions. [2022-01-10 07:40:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:48,368 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:48,368 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] [2022-01-10 07:40:48,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:48,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:48,578 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:48,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:48,578 INFO L85 PathProgramCache]: Analyzing trace with hash 426421868, now seen corresponding path program 1 times [2022-01-10 07:40:48,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:48,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440971520] [2022-01-10 07:40:48,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:48,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:48,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:48,580 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:48,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:40:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:48,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:48,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:48,858 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 07:40:48,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:48,858 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440971520] [2022-01-10 07:40:48,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440971520] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:48,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:48,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:48,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265522347] [2022-01-10 07:40:48,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:48,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:48,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:48,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:48,860 INFO L87 Difference]: Start difference. First operand 3351 states and 5583 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:49,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:49,218 INFO L93 Difference]: Finished difference Result 4688 states and 7379 transitions. [2022-01-10 07:40:49,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:49,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:49,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:49,227 INFO L225 Difference]: With dead ends: 4688 [2022-01-10 07:40:49,227 INFO L226 Difference]: Without dead ends: 3473 [2022-01-10 07:40:49,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:40:49,230 INFO L933 BasicCegarLoop]: 4283 mSDtfsCounter, 4468 mSDsluCounter, 8282 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4483 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:49,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4483 Valid, 12565 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:49,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3473 states. [2022-01-10 07:40:49,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3473 to 3473. [2022-01-10 07:40:49,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3473 states, 3379 states have (on average 1.6617342408996745) internal successors, (5615), 3382 states have internal predecessors, (5615), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:49,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3473 states to 3473 states and 5718 transitions. [2022-01-10 07:40:49,326 INFO L78 Accepts]: Start accepts. Automaton has 3473 states and 5718 transitions. Word has length 123 [2022-01-10 07:40:49,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:49,326 INFO L470 AbstractCegarLoop]: Abstraction has 3473 states and 5718 transitions. [2022-01-10 07:40:49,326 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 4 states have internal predecessors, (113), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:49,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3473 states and 5718 transitions. [2022-01-10 07:40:49,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:49,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:49,328 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] [2022-01-10 07:40:49,337 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:49,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:49,538 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:49,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:49,538 INFO L85 PathProgramCache]: Analyzing trace with hash -910600343, now seen corresponding path program 1 times [2022-01-10 07:40:49,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:49,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015003541] [2022-01-10 07:40:49,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:49,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:49,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:49,540 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:49,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:40:49,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:49,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:49,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:49,833 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 07:40:49,834 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:49,834 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:49,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015003541] [2022-01-10 07:40:49,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015003541] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:49,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:49,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:49,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912564970] [2022-01-10 07:40:49,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:49,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:49,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:49,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:49,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:49,835 INFO L87 Difference]: Start difference. First operand 3473 states and 5718 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:49,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:49,965 INFO L93 Difference]: Finished difference Result 5019 states and 7760 transitions. [2022-01-10 07:40:49,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:49,966 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:49,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:49,975 INFO L225 Difference]: With dead ends: 5019 [2022-01-10 07:40:49,975 INFO L226 Difference]: Without dead ends: 3683 [2022-01-10 07:40:49,979 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:49,982 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 284 mSDsluCounter, 13024 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 17329 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:49,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 17329 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:49,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3683 states. [2022-01-10 07:40:50,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3683 to 3479. [2022-01-10 07:40:50,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3479 states, 3385 states have (on average 1.6564254062038404) internal successors, (5607), 3388 states have internal predecessors, (5607), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:50,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3479 states to 3479 states and 5710 transitions. [2022-01-10 07:40:50,097 INFO L78 Accepts]: Start accepts. Automaton has 3479 states and 5710 transitions. Word has length 123 [2022-01-10 07:40:50,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:50,098 INFO L470 AbstractCegarLoop]: Abstraction has 3479 states and 5710 transitions. [2022-01-10 07:40:50,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:50,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3479 states and 5710 transitions. [2022-01-10 07:40:50,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:50,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:50,099 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] [2022-01-10 07:40:50,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:50,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:50,309 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:50,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1968438421, now seen corresponding path program 1 times [2022-01-10 07:40:50,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:50,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676943540] [2022-01-10 07:40:50,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:50,311 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:50,311 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:50,312 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:50,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:40:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:50,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:50,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:50,584 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 07:40:50,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:50,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:50,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676943540] [2022-01-10 07:40:50,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676943540] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:50,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:50,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:50,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479948257] [2022-01-10 07:40:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:50,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:50,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:50,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:50,586 INFO L87 Difference]: Start difference. First operand 3479 states and 5710 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:50,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:50,710 INFO L93 Difference]: Finished difference Result 5003 states and 7708 transitions. [2022-01-10 07:40:50,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:50,711 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:50,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:50,720 INFO L225 Difference]: With dead ends: 5003 [2022-01-10 07:40:50,720 INFO L226 Difference]: Without dead ends: 3661 [2022-01-10 07:40:50,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:50,726 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 245 mSDsluCounter, 13009 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17314 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:50,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17314 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:50,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3661 states. [2022-01-10 07:40:50,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3661 to 3485. [2022-01-10 07:40:50,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3485 states, 3391 states have (on average 1.651135358301386) internal successors, (5599), 3394 states have internal predecessors, (5599), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:50,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3485 states to 3485 states and 5702 transitions. [2022-01-10 07:40:50,846 INFO L78 Accepts]: Start accepts. Automaton has 3485 states and 5702 transitions. Word has length 123 [2022-01-10 07:40:50,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:50,847 INFO L470 AbstractCegarLoop]: Abstraction has 3485 states and 5702 transitions. [2022-01-10 07:40:50,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:50,847 INFO L276 IsEmpty]: Start isEmpty. Operand 3485 states and 5702 transitions. [2022-01-10 07:40:50,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:50,848 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:50,848 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] [2022-01-10 07:40:50,860 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:51,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:51,059 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:51,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:51,059 INFO L85 PathProgramCache]: Analyzing trace with hash -234333971, now seen corresponding path program 1 times [2022-01-10 07:40:51,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:51,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23466228] [2022-01-10 07:40:51,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:51,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:51,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:51,061 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:51,063 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:40:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:51,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:51,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:51,311 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 07:40:51,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:51,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:51,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23466228] [2022-01-10 07:40:51,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23466228] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:51,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:51,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:51,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522252941] [2022-01-10 07:40:51,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:51,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:51,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:51,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:51,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:51,313 INFO L87 Difference]: Start difference. First operand 3485 states and 5702 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:51,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:51,435 INFO L93 Difference]: Finished difference Result 4987 states and 7656 transitions. [2022-01-10 07:40:51,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:51,435 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:51,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:51,444 INFO L225 Difference]: With dead ends: 4987 [2022-01-10 07:40:51,444 INFO L226 Difference]: Without dead ends: 3639 [2022-01-10 07:40:51,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:51,449 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 206 mSDsluCounter, 12994 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 17299 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:51,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 17299 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:51,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3639 states. [2022-01-10 07:40:51,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3639 to 3491. [2022-01-10 07:40:51,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3491 states, 3397 states have (on average 1.645863997644981) internal successors, (5591), 3400 states have internal predecessors, (5591), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:51,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3491 states to 3491 states and 5694 transitions. [2022-01-10 07:40:51,568 INFO L78 Accepts]: Start accepts. Automaton has 3491 states and 5694 transitions. Word has length 123 [2022-01-10 07:40:51,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:51,568 INFO L470 AbstractCegarLoop]: Abstraction has 3491 states and 5694 transitions. [2022-01-10 07:40:51,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:51,569 INFO L276 IsEmpty]: Start isEmpty. Operand 3491 states and 5694 transitions. [2022-01-10 07:40:51,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:51,570 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:51,570 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] [2022-01-10 07:40:51,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:51,779 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:51,780 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:51,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:51,780 INFO L85 PathProgramCache]: Analyzing trace with hash -726960145, now seen corresponding path program 1 times [2022-01-10 07:40:51,780 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:51,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1366988860] [2022-01-10 07:40:51,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:51,781 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:51,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:51,782 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:51,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:40:51,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:51,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:51,885 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:52,026 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 07:40:52,026 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:52,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:52,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1366988860] [2022-01-10 07:40:52,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1366988860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:52,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:52,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:52,027 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824840050] [2022-01-10 07:40:52,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:52,027 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:52,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:52,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:52,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:52,028 INFO L87 Difference]: Start difference. First operand 3491 states and 5694 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:52,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:52,144 INFO L93 Difference]: Finished difference Result 4971 states and 7604 transitions. [2022-01-10 07:40:52,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:52,145 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:52,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:52,153 INFO L225 Difference]: With dead ends: 4971 [2022-01-10 07:40:52,153 INFO L226 Difference]: Without dead ends: 3617 [2022-01-10 07:40:52,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:52,158 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 167 mSDsluCounter, 12979 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 17284 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:52,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 17284 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:52,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3617 states. [2022-01-10 07:40:52,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3617 to 3497. [2022-01-10 07:40:52,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3497 states, 3403 states have (on average 1.6406112253893623) internal successors, (5583), 3406 states have internal predecessors, (5583), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:52,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3497 states to 3497 states and 5686 transitions. [2022-01-10 07:40:52,362 INFO L78 Accepts]: Start accepts. Automaton has 3497 states and 5686 transitions. Word has length 123 [2022-01-10 07:40:52,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:52,362 INFO L470 AbstractCegarLoop]: Abstraction has 3497 states and 5686 transitions. [2022-01-10 07:40:52,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:52,362 INFO L276 IsEmpty]: Start isEmpty. Operand 3497 states and 5686 transitions. [2022-01-10 07:40:52,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:52,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:52,364 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] [2022-01-10 07:40:52,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:52,573 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:52,574 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:52,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:52,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1144356751, now seen corresponding path program 1 times [2022-01-10 07:40:52,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:52,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1976819465] [2022-01-10 07:40:52,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:52,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:52,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:52,576 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:52,576 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:40:52,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:52,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:52,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:52,808 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 07:40:52,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:52,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:52,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1976819465] [2022-01-10 07:40:52,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1976819465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:52,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:52,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:52,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533205477] [2022-01-10 07:40:52,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:52,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:52,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:52,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:52,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:52,810 INFO L87 Difference]: Start difference. First operand 3497 states and 5686 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:52,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:52,913 INFO L93 Difference]: Finished difference Result 4927 states and 7516 transitions. [2022-01-10 07:40:52,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:52,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:52,927 INFO L225 Difference]: With dead ends: 4927 [2022-01-10 07:40:52,927 INFO L226 Difference]: Without dead ends: 3567 [2022-01-10 07:40:52,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:52,931 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 89 mSDsluCounter, 12949 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 17254 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:52,932 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 17254 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:52,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3567 states. [2022-01-10 07:40:53,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3567 to 3503. [2022-01-10 07:40:53,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3503 states, 3409 states have (on average 1.635376943385157) internal successors, (5575), 3412 states have internal predecessors, (5575), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:53,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3503 states to 3503 states and 5678 transitions. [2022-01-10 07:40:53,046 INFO L78 Accepts]: Start accepts. Automaton has 3503 states and 5678 transitions. Word has length 123 [2022-01-10 07:40:53,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:53,046 INFO L470 AbstractCegarLoop]: Abstraction has 3503 states and 5678 transitions. [2022-01-10 07:40:53,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:53,046 INFO L276 IsEmpty]: Start isEmpty. Operand 3503 states and 5678 transitions. [2022-01-10 07:40:53,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:53,048 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:53,048 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] [2022-01-10 07:40:53,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:53,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:53,258 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:53,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:53,258 INFO L85 PathProgramCache]: Analyzing trace with hash 1122024435, now seen corresponding path program 1 times [2022-01-10 07:40:53,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:53,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1984793590] [2022-01-10 07:40:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:53,259 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:53,260 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:53,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:40:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:53,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:53,527 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 07:40:53,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:53,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:53,527 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1984793590] [2022-01-10 07:40:53,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1984793590] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:53,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:53,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:53,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693801244] [2022-01-10 07:40:53,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:53,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:53,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:53,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:53,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:53,528 INFO L87 Difference]: Start difference. First operand 3503 states and 5678 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:53,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:53,641 INFO L93 Difference]: Finished difference Result 5205 states and 7836 transitions. [2022-01-10 07:40:53,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:53,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:53,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:53,650 INFO L225 Difference]: With dead ends: 5205 [2022-01-10 07:40:53,650 INFO L226 Difference]: Without dead ends: 3839 [2022-01-10 07:40:53,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:53,654 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 50 mSDsluCounter, 12934 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 17239 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:53,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 17239 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:53,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-01-10 07:40:53,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3551. [2022-01-10 07:40:53,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3551 states, 3457 states have (on average 1.6265548163147237) internal successors, (5623), 3460 states have internal predecessors, (5623), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:53,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3551 states to 3551 states and 5726 transitions. [2022-01-10 07:40:53,786 INFO L78 Accepts]: Start accepts. Automaton has 3551 states and 5726 transitions. Word has length 123 [2022-01-10 07:40:53,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:53,787 INFO L470 AbstractCegarLoop]: Abstraction has 3551 states and 5726 transitions. [2022-01-10 07:40:53,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:53,787 INFO L276 IsEmpty]: Start isEmpty. Operand 3551 states and 5726 transitions. [2022-01-10 07:40:53,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:53,788 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:53,788 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] [2022-01-10 07:40:53,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:53,998 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:53,998 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:53,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:53,999 INFO L85 PathProgramCache]: Analyzing trace with hash 2015510773, now seen corresponding path program 1 times [2022-01-10 07:40:53,999 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:53,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [250544942] [2022-01-10 07:40:53,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:53,999 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:53,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:54,000 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:54,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:40:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:54,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:40:54,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:54,240 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 07:40:54,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:54,241 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:54,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [250544942] [2022-01-10 07:40:54,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [250544942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:54,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:54,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:40:54,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707008957] [2022-01-10 07:40:54,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:54,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:40:54,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:54,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:40:54,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:54,242 INFO L87 Difference]: Start difference. First operand 3551 states and 5726 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:54,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:54,349 INFO L93 Difference]: Finished difference Result 4979 states and 7520 transitions. [2022-01-10 07:40:54,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:40:54,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 123 [2022-01-10 07:40:54,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:54,357 INFO L225 Difference]: With dead ends: 4979 [2022-01-10 07:40:54,357 INFO L226 Difference]: Without dead ends: 3565 [2022-01-10 07:40:54,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:40:54,360 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 10 mSDsluCounter, 12914 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17219 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:54,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17219 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:54,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3565 states. [2022-01-10 07:40:54,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3565 to 3557. [2022-01-10 07:40:54,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3557 states, 3463 states have (on average 1.6214265088073925) internal successors, (5615), 3466 states have internal predecessors, (5615), 51 states have call successors, (51), 40 states have call predecessors, (51), 41 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:40:54,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3557 states to 3557 states and 5718 transitions. [2022-01-10 07:40:54,477 INFO L78 Accepts]: Start accepts. Automaton has 3557 states and 5718 transitions. Word has length 123 [2022-01-10 07:40:54,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:54,478 INFO L470 AbstractCegarLoop]: Abstraction has 3557 states and 5718 transitions. [2022-01-10 07:40:54,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:40:54,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3557 states and 5718 transitions. [2022-01-10 07:40:54,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-01-10 07:40:54,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:54,479 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] [2022-01-10 07:40:54,488 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:54,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:54,689 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:54,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:54,690 INFO L85 PathProgramCache]: Analyzing trace with hash 170143607, now seen corresponding path program 1 times [2022-01-10 07:40:54,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:54,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698195127] [2022-01-10 07:40:54,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:54,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:54,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:54,691 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:54,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:40:54,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:54,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 296 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:54,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:55,017 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 07:40:55,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:55,018 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:55,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698195127] [2022-01-10 07:40:55,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698195127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:55,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:55,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:40:55,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901252429] [2022-01-10 07:40:55,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:55,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:55,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:55,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:55,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:55,019 INFO L87 Difference]: Start difference. First operand 3557 states and 5718 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:40:55,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:55,221 INFO L93 Difference]: Finished difference Result 6366 states and 9183 transitions. [2022-01-10 07:40:55,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:55,222 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 123 [2022-01-10 07:40:55,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:55,232 INFO L225 Difference]: With dead ends: 6366 [2022-01-10 07:40:55,232 INFO L226 Difference]: Without dead ends: 4946 [2022-01-10 07:40:55,238 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:55,238 INFO L933 BasicCegarLoop]: 4365 mSDtfsCounter, 4177 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 4680 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:55,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 4680 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:55,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4946 states. [2022-01-10 07:40:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4946 to 4944. [2022-01-10 07:40:55,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4944 states, 4762 states have (on average 1.510919781604368) internal successors, (7195), 4768 states have internal predecessors, (7195), 98 states have call successors, (98), 80 states have call predecessors, (98), 82 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-01-10 07:40:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4944 states to 4944 states and 7393 transitions. [2022-01-10 07:40:55,458 INFO L78 Accepts]: Start accepts. Automaton has 4944 states and 7393 transitions. Word has length 123 [2022-01-10 07:40:55,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:55,459 INFO L470 AbstractCegarLoop]: Abstraction has 4944 states and 7393 transitions. [2022-01-10 07:40:55,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 2 states have internal predecessors, (113), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:40:55,459 INFO L276 IsEmpty]: Start isEmpty. Operand 4944 states and 7393 transitions. [2022-01-10 07:40:55,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 07:40:55,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:55,463 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:55,475 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:55,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:55,673 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:55,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:55,673 INFO L85 PathProgramCache]: Analyzing trace with hash 211678619, now seen corresponding path program 1 times [2022-01-10 07:40:55,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:55,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1331492572] [2022-01-10 07:40:55,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:55,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:55,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:55,675 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:55,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:40:55,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:55,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:55,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:56,122 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:40:56,123 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:56,123 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:56,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1331492572] [2022-01-10 07:40:56,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1331492572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:56,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:56,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:56,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658069783] [2022-01-10 07:40:56,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:56,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:56,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:56,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:56,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:56,124 INFO L87 Difference]: Start difference. First operand 4944 states and 7393 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:40:56,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:56,671 INFO L93 Difference]: Finished difference Result 10436 states and 14069 transitions. [2022-01-10 07:40:56,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:40:56,672 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 200 [2022-01-10 07:40:56,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:56,686 INFO L225 Difference]: With dead ends: 10436 [2022-01-10 07:40:56,687 INFO L226 Difference]: Without dead ends: 7630 [2022-01-10 07:40:56,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:40:56,694 INFO L933 BasicCegarLoop]: 4448 mSDtfsCounter, 4406 mSDsluCounter, 4540 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4412 SdHoareTripleChecker+Valid, 8988 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:56,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4412 Valid, 8988 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:40:56,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7630 states. [2022-01-10 07:40:57,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7630 to 7628. [2022-01-10 07:40:57,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7628 states, 7275 states have (on average 1.4079725085910653) internal successors, (10243), 7290 states have internal predecessors, (10243), 187 states have call successors, (187), 152 states have call predecessors, (187), 164 states have return successors, (211), 187 states have call predecessors, (211), 187 states have call successors, (211) [2022-01-10 07:40:57,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7628 states to 7628 states and 10641 transitions. [2022-01-10 07:40:57,129 INFO L78 Accepts]: Start accepts. Automaton has 7628 states and 10641 transitions. Word has length 200 [2022-01-10 07:40:57,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:57,129 INFO L470 AbstractCegarLoop]: Abstraction has 7628 states and 10641 transitions. [2022-01-10 07:40:57,129 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 4 states have internal predecessors, (135), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:40:57,130 INFO L276 IsEmpty]: Start isEmpty. Operand 7628 states and 10641 transitions. [2022-01-10 07:40:57,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2022-01-10 07:40:57,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:57,136 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:57,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:57,346 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:57,346 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:57,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:57,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1573724643, now seen corresponding path program 1 times [2022-01-10 07:40:57,347 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:57,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [922802295] [2022-01-10 07:40:57,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:57,347 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:57,347 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:57,349 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:57,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:40:57,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:57,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 414 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:40:57,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:57,747 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:40:57,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:57,747 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:57,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [922802295] [2022-01-10 07:40:57,747 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [922802295] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:57,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:57,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:40:57,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308770012] [2022-01-10 07:40:57,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:57,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:40:57,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:57,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:40:57,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:57,749 INFO L87 Difference]: Start difference. First operand 7628 states and 10641 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:40:58,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:40:58,116 INFO L93 Difference]: Finished difference Result 13108 states and 17278 transitions. [2022-01-10 07:40:58,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:40:58,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 200 [2022-01-10 07:40:58,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:40:58,133 INFO L225 Difference]: With dead ends: 13108 [2022-01-10 07:40:58,133 INFO L226 Difference]: Without dead ends: 7618 [2022-01-10 07:40:58,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 199 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:40:58,145 INFO L933 BasicCegarLoop]: 4306 mSDtfsCounter, 341 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 8264 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:40:58,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 8264 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:40:58,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7618 states. [2022-01-10 07:40:58,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7618 to 7618. [2022-01-10 07:40:58,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7618 states, 7268 states have (on average 1.4075399009356082) internal successors, (10230), 7282 states have internal predecessors, (10230), 184 states have call successors, (184), 152 states have call predecessors, (184), 164 states have return successors, (208), 184 states have call predecessors, (208), 184 states have call successors, (208) [2022-01-10 07:40:58,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7618 states to 7618 states and 10622 transitions. [2022-01-10 07:40:58,667 INFO L78 Accepts]: Start accepts. Automaton has 7618 states and 10622 transitions. Word has length 200 [2022-01-10 07:40:58,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:40:58,667 INFO L470 AbstractCegarLoop]: Abstraction has 7618 states and 10622 transitions. [2022-01-10 07:40:58,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:40:58,668 INFO L276 IsEmpty]: Start isEmpty. Operand 7618 states and 10622 transitions. [2022-01-10 07:40:58,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 07:40:58,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:40:58,673 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:40:58,685 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:40:58,882 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:40:58,883 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:40:58,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:40:58,883 INFO L85 PathProgramCache]: Analyzing trace with hash -827998598, now seen corresponding path program 1 times [2022-01-10 07:40:58,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:40:58,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2122128384] [2022-01-10 07:40:58,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:40:58,884 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:40:58,884 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:40:58,886 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:40:58,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:40:59,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:40:59,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:40:59,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:40:59,335 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:40:59,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:40:59,336 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:40:59,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2122128384] [2022-01-10 07:40:59,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2122128384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:40:59,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:40:59,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:40:59,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379178710] [2022-01-10 07:40:59,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:40:59,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:40:59,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:40:59,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:40:59,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:40:59,337 INFO L87 Difference]: Start difference. First operand 7618 states and 10622 transitions. Second operand has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:00,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:00,025 INFO L93 Difference]: Finished difference Result 18131 states and 23368 transitions. [2022-01-10 07:41:00,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:41:00,026 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 201 [2022-01-10 07:41:00,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:00,050 INFO L225 Difference]: With dead ends: 18131 [2022-01-10 07:41:00,050 INFO L226 Difference]: Without dead ends: 12651 [2022-01-10 07:41:00,061 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:41:00,062 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4401 mSDsluCounter, 4517 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4407 SdHoareTripleChecker+Valid, 8948 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:00,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4407 Valid, 8948 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:41:00,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12651 states. [2022-01-10 07:41:00,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12651 to 12649. [2022-01-10 07:41:00,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12649 states, 11976 states have (on average 1.3306613226452906) internal successors, (15936), 12007 states have internal predecessors, (15936), 351 states have call successors, (351), 288 states have call predecessors, (351), 320 states have return successors, (419), 355 states have call predecessors, (419), 351 states have call successors, (419) [2022-01-10 07:41:00,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12649 states to 12649 states and 16706 transitions. [2022-01-10 07:41:00,883 INFO L78 Accepts]: Start accepts. Automaton has 12649 states and 16706 transitions. Word has length 201 [2022-01-10 07:41:00,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:00,886 INFO L470 AbstractCegarLoop]: Abstraction has 12649 states and 16706 transitions. [2022-01-10 07:41:00,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.0) internal successors, (136), 4 states have internal predecessors, (136), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:00,886 INFO L276 IsEmpty]: Start isEmpty. Operand 12649 states and 16706 transitions. [2022-01-10 07:41:00,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2022-01-10 07:41:00,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:00,895 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:00,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:41:01,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:41:01,107 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:01,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:01,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1681565436, now seen corresponding path program 1 times [2022-01-10 07:41:01,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:01,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013340111] [2022-01-10 07:41:01,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:01,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:01,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:01,109 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:41:01,111 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:41:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:01,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:01,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:01,504 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:41:01,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:01,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:01,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013340111] [2022-01-10 07:41:01,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013340111] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:01,505 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:01,505 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:41:01,505 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804066811] [2022-01-10 07:41:01,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:01,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:01,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:01,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:01,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:01,506 INFO L87 Difference]: Start difference. First operand 12649 states and 16706 transitions. Second operand has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:41:02,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:02,037 INFO L93 Difference]: Finished difference Result 23151 states and 29411 transitions. [2022-01-10 07:41:02,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:41:02,037 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 201 [2022-01-10 07:41:02,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:02,061 INFO L225 Difference]: With dead ends: 23151 [2022-01-10 07:41:02,061 INFO L226 Difference]: Without dead ends: 12640 [2022-01-10 07:41:02,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:02,079 INFO L933 BasicCegarLoop]: 4305 mSDtfsCounter, 339 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 339 SdHoareTripleChecker+Valid, 8263 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:02,079 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [339 Valid, 8263 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:41:02,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12640 states. [2022-01-10 07:41:02,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12640 to 12640. [2022-01-10 07:41:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12640 states, 11970 states have (on average 1.3304093567251463) internal successors, (15925), 12000 states have internal predecessors, (15925), 348 states have call successors, (348), 288 states have call predecessors, (348), 320 states have return successors, (416), 352 states have call predecessors, (416), 348 states have call successors, (416) [2022-01-10 07:41:02,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12640 states to 12640 states and 16689 transitions. [2022-01-10 07:41:02,897 INFO L78 Accepts]: Start accepts. Automaton has 12640 states and 16689 transitions. Word has length 201 [2022-01-10 07:41:02,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:02,897 INFO L470 AbstractCegarLoop]: Abstraction has 12640 states and 16689 transitions. [2022-01-10 07:41:02,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.333333333333336) internal successors, (127), 3 states have internal predecessors, (127), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:41:02,897 INFO L276 IsEmpty]: Start isEmpty. Operand 12640 states and 16689 transitions. [2022-01-10 07:41:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 07:41:02,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:02,906 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:02,917 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 07:41:03,116 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:41:03,117 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:03,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:03,117 INFO L85 PathProgramCache]: Analyzing trace with hash -657388809, now seen corresponding path program 1 times [2022-01-10 07:41:03,117 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:03,118 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [818436554] [2022-01-10 07:41:03,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:03,118 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:03,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:03,119 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:41:03,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:41:03,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:03,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:41:03,235 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:03,566 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:41:03,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:03,566 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:03,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [818436554] [2022-01-10 07:41:03,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [818436554] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:03,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:03,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:41:03,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299204103] [2022-01-10 07:41:03,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:03,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:41:03,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:03,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:41:03,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:41:03,568 INFO L87 Difference]: Start difference. First operand 12640 states and 16689 transitions. Second operand has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:04,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:04,806 INFO L93 Difference]: Finished difference Result 32756 states and 41049 transitions. [2022-01-10 07:41:04,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:41:04,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 202 [2022-01-10 07:41:04,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:04,850 INFO L225 Difference]: With dead ends: 32756 [2022-01-10 07:41:04,850 INFO L226 Difference]: Without dead ends: 22254 [2022-01-10 07:41:04,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:41:04,876 INFO L933 BasicCegarLoop]: 4420 mSDtfsCounter, 4394 mSDsluCounter, 4494 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4400 SdHoareTripleChecker+Valid, 8914 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:04,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4400 Valid, 8914 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:41:04,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22254 states. [2022-01-10 07:41:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22254 to 22252. [2022-01-10 07:41:06,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22252 states, 20963 states have (on average 1.279444735963364) internal successors, (26821), 21030 states have internal predecessors, (26821), 663 states have call successors, (663), 544 states have call predecessors, (663), 624 states have return successors, (827), 679 states have call predecessors, (827), 663 states have call successors, (827) [2022-01-10 07:41:06,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22252 states to 22252 states and 28311 transitions. [2022-01-10 07:41:06,133 INFO L78 Accepts]: Start accepts. Automaton has 22252 states and 28311 transitions. Word has length 202 [2022-01-10 07:41:06,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:06,133 INFO L470 AbstractCegarLoop]: Abstraction has 22252 states and 28311 transitions. [2022-01-10 07:41:06,133 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.25) internal successors, (137), 4 states have internal predecessors, (137), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:06,133 INFO L276 IsEmpty]: Start isEmpty. Operand 22252 states and 28311 transitions. [2022-01-10 07:41:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-01-10 07:41:06,146 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:06,147 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:06,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 07:41:06,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:41:06,348 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:06,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:06,349 INFO L85 PathProgramCache]: Analyzing trace with hash 1852175225, now seen corresponding path program 1 times [2022-01-10 07:41:06,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:06,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620977808] [2022-01-10 07:41:06,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:06,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:06,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:06,350 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:41:06,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:41:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:06,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:06,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:06,680 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:41:06,680 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:06,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:06,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620977808] [2022-01-10 07:41:06,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620977808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:06,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:06,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:41:06,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83551469] [2022-01-10 07:41:06,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:06,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:06,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:06,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:06,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:06,682 INFO L87 Difference]: Start difference. First operand 22252 states and 28311 transitions. Second operand has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:41:07,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:07,944 INFO L93 Difference]: Finished difference Result 42358 states and 52624 transitions. [2022-01-10 07:41:07,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:41:07,944 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 202 [2022-01-10 07:41:07,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:07,999 INFO L225 Difference]: With dead ends: 42358 [2022-01-10 07:41:07,999 INFO L226 Difference]: Without dead ends: 22244 [2022-01-10 07:41:08,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:08,024 INFO L933 BasicCegarLoop]: 4304 mSDtfsCounter, 337 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 337 SdHoareTripleChecker+Valid, 8262 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:08,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [337 Valid, 8262 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:41:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22244 states. [2022-01-10 07:41:09,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22244 to 22244. [2022-01-10 07:41:09,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22244 states, 20958 states have (on average 1.2793205458536119) internal successors, (26812), 21024 states have internal predecessors, (26812), 660 states have call successors, (660), 544 states have call predecessors, (660), 624 states have return successors, (824), 676 states have call predecessors, (824), 660 states have call successors, (824) [2022-01-10 07:41:09,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22244 states to 22244 states and 28296 transitions. [2022-01-10 07:41:09,386 INFO L78 Accepts]: Start accepts. Automaton has 22244 states and 28296 transitions. Word has length 202 [2022-01-10 07:41:09,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:09,386 INFO L470 AbstractCegarLoop]: Abstraction has 22244 states and 28296 transitions. [2022-01-10 07:41:09,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.666666666666664) internal successors, (128), 3 states have internal predecessors, (128), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:41:09,386 INFO L276 IsEmpty]: Start isEmpty. Operand 22244 states and 28296 transitions. [2022-01-10 07:41:09,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 07:41:09,398 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:09,398 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:09,409 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:41:09,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:41:09,609 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:09,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:09,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1389218530, now seen corresponding path program 1 times [2022-01-10 07:41:09,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:09,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1803571315] [2022-01-10 07:41:09,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:09,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:09,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:09,611 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:41:09,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:41:09,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:09,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:41:09,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:10,027 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 07:41:10,027 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:10,027 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:10,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1803571315] [2022-01-10 07:41:10,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1803571315] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:10,027 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:10,027 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:41:10,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135604313] [2022-01-10 07:41:10,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:10,028 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:41:10,028 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:10,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:41:10,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:41:10,029 INFO L87 Difference]: Start difference. First operand 22244 states and 28296 transitions. Second operand has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:13,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:41:13,085 INFO L93 Difference]: Finished difference Result 67043 states and 82407 transitions. [2022-01-10 07:41:13,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:41:13,085 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 203 [2022-01-10 07:41:13,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:41:13,213 INFO L225 Difference]: With dead ends: 67043 [2022-01-10 07:41:13,213 INFO L226 Difference]: Without dead ends: 46937 [2022-01-10 07:41:13,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:41:13,245 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4399 mSDsluCounter, 4476 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4405 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:41:13,245 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4405 Valid, 8899 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:41:13,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46937 states. [2022-01-10 07:41:16,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46937 to 45847. [2022-01-10 07:41:16,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45847 states, 42990 states have (on average 1.2425680390788556) internal successors, (53418), 43329 states have internal predecessors, (53418), 1255 states have call successors, (1255), 1024 states have call predecessors, (1255), 1600 states have return successors, (2060), 1495 states have call predecessors, (2060), 1255 states have call successors, (2060) [2022-01-10 07:41:16,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45847 states to 45847 states and 56733 transitions. [2022-01-10 07:41:16,290 INFO L78 Accepts]: Start accepts. Automaton has 45847 states and 56733 transitions. Word has length 203 [2022-01-10 07:41:16,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:41:16,291 INFO L470 AbstractCegarLoop]: Abstraction has 45847 states and 56733 transitions. [2022-01-10 07:41:16,291 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 34.5) internal successors, (138), 4 states have internal predecessors, (138), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:41:16,291 INFO L276 IsEmpty]: Start isEmpty. Operand 45847 states and 56733 transitions. [2022-01-10 07:41:16,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2022-01-10 07:41:16,311 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:41:16,311 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:41:16,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:41:16,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:41:16,512 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:41:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:41:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1120345504, now seen corresponding path program 1 times [2022-01-10 07:41:16,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:41:16,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [694029488] [2022-01-10 07:41:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:41:16,513 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:41:16,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:41:16,514 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:41:16,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:41:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:41:16,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:41:16,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:41:16,855 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 07:41:16,856 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:41:16,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:41:16,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [694029488] [2022-01-10 07:41:16,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [694029488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:41:16,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:41:16,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:41:16,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514386398] [2022-01-10 07:41:16,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:41:16,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:41:16,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:41:16,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:41:16,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:41:16,857 INFO L87 Difference]: Start difference. First operand 45847 states and 56733 transitions. Second operand has 3 states, 3 states have (on average 43.0) internal successors, (129), 3 states have internal predecessors, (129), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)