/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_label48+token_ring.06.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:50:19,116 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:50:19,117 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:50:19,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:50:19,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:50:19,182 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:50:19,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:50:19,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:50:19,190 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:50:19,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:50:19,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:50:19,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:50:19,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:50:19,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:50:19,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:50:19,204 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:50:19,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:50:19,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:50:19,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:50:19,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:50:19,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:50:19,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:50:19,216 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:50:19,217 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:50:19,222 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:50:19,222 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:50:19,223 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:50:19,224 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:50:19,224 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:50:19,225 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:50:19,225 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:50:19,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:50:19,227 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:50:19,228 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:50:19,229 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:50:19,229 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:50:19,230 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:50:19,230 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:50:19,230 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:50:19,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:50:19,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:50:19,232 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 07:50:19,266 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:50:19,266 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:50:19,266 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:50:19,267 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:50:19,267 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:50:19,267 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:50:19,268 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:50:19,268 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:50:19,268 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:50:19,268 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:50:19,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:50:19,269 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:50:19,269 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:50:19,270 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:50:19,270 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:19,271 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:50:19,271 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:50:19,272 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:50:19,272 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:50:19,272 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:50:19,272 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:50:19,272 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:50:19,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:50:19,489 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:50:19,491 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:50:19,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:50:19,495 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:50:19,496 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-01-10 07:50:19,550 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ddf85d7/9b0c6221f7ab461a9ec6e6b94e5979b9/FLAG705901a47 [2022-01-10 07:50:20,298 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:50:20,299 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.06.cil-2.c [2022-01-10 07:50:20,345 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ddf85d7/9b0c6221f7ab461a9ec6e6b94e5979b9/FLAG705901a47 [2022-01-10 07:50:20,569 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5ddf85d7/9b0c6221f7ab461a9ec6e6b94e5979b9 [2022-01-10 07:50:20,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:50:20,574 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:50:20,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:20,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:50:20,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:50:20,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:20" (1/1) ... [2022-01-10 07:50:20,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2428daef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:20, skipping insertion in model container [2022-01-10 07:50:20,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:20" (1/1) ... [2022-01-10 07:50:20,586 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:50:20,772 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:50:22,463 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_label48+token_ring.06.cil-2.c[375709,375722] [2022-01-10 07:50:22,516 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_label48+token_ring.06.cil-2.c[383339,383352] [2022-01-10 07:50:22,679 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:22,689 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:50:23,408 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_label48+token_ring.06.cil-2.c[375709,375722] [2022-01-10 07:50:23,424 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_label48+token_ring.06.cil-2.c[383339,383352] [2022-01-10 07:50:23,440 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:23,501 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:50:23,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23 WrapperNode [2022-01-10 07:50:23,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:23,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:23,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:50:23,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:50:23,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:23,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,007 INFO L137 Inliner]: procedures = 57, calls = 59, calls flagged for inlining = 34, calls inlined = 34, statements flattened = 12821 [2022-01-10 07:50:24,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:24,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:50:24,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:50:24,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:50:24,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,077 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,078 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,315 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,527 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:50:24,528 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:50:24,528 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:50:24,528 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:50:24,530 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (1/1) ... [2022-01-10 07:50:24,538 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:24,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:50:24,560 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 07:50:24,581 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 07:50:24,609 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:50:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:50:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:50:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:50:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:50:24,610 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:50:24,610 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:50:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:50:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:50:24,611 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:50:24,611 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:50:24,759 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:50:24,760 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:50:32,362 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:50:32,393 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:50:32,393 INFO L299 CfgBuilder]: Removed 10 assume(true) statements. [2022-01-10 07:50:32,397 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:32 BoogieIcfgContainer [2022-01-10 07:50:32,397 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:50:32,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:50:32,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:50:32,401 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:50:32,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:50:20" (1/3) ... [2022-01-10 07:50:32,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446561be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:32, skipping insertion in model container [2022-01-10 07:50:32,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:23" (2/3) ... [2022-01-10 07:50:32,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@446561be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:32, skipping insertion in model container [2022-01-10 07:50:32,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:32" (3/3) ... [2022-01-10 07:50:32,404 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.06.cil-2.c [2022-01-10 07:50:32,408 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:50:32,408 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:50:32,454 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:50:32,459 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 07:50:32,459 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:50:32,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:32,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:32,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:32,525 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] [2022-01-10 07:50:32,525 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:32,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:32,529 INFO L85 PathProgramCache]: Analyzing trace with hash -72843931, now seen corresponding path program 1 times [2022-01-10 07:50:32,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:32,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [825248132] [2022-01-10 07:50:32,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:32,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:32,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:32,541 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 07:50:32,542 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 07:50:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:32,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:32,733 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:33,004 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 07:50:33,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:33,005 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:33,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [825248132] [2022-01-10 07:50:33,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [825248132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:33,006 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:33,006 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:33,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734197100] [2022-01-10 07:50:33,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:33,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:33,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:33,074 INFO L87 Difference]: Start difference. First operand has 2415 states, 2386 states have (on average 1.8512154233025986) internal successors, (4417), 2389 states have internal predecessors, (4417), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:50:33,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:33,329 INFO L93 Difference]: Finished difference Result 4820 states and 8895 transitions. [2022-01-10 07:50:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:33,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:33,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:33,355 INFO L225 Difference]: With dead ends: 4820 [2022-01-10 07:50:33,355 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:33,365 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 07:50:33,369 INFO L933 BasicCegarLoop]: 4374 mSDtfsCounter, 341 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 8396 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 07:50:33,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [341 Valid, 8396 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:33,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:33,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:33,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8387931034482758) internal successors, (4266), 2322 states have internal predecessors, (4266), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4306 transitions. [2022-01-10 07:50:33,493 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4306 transitions. Word has length 112 [2022-01-10 07:50:33,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:33,495 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4306 transitions. [2022-01-10 07:50:33,495 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 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 07:50:33,495 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4306 transitions. [2022-01-10 07:50:33,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:33,499 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:33,499 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] [2022-01-10 07:50:33,512 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:50:33,711 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 07:50:33,712 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:33,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:33,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1103884829, now seen corresponding path program 1 times [2022-01-10 07:50:33,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:33,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1659928391] [2022-01-10 07:50:33,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:33,714 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:33,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:33,715 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 07:50:33,717 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 07:50:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:33,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:33,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:34,069 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 07:50:34,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:34,070 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:34,070 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1659928391] [2022-01-10 07:50:34,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1659928391] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:34,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:34,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:34,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003608453] [2022-01-10 07:50:34,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:34,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:34,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:34,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:34,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:34,079 INFO L87 Difference]: Start difference. First operand 2348 states and 4306 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:34,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:34,402 INFO L93 Difference]: Finished difference Result 2561 states and 4636 transitions. [2022-01-10 07:50:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:34,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:34,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:34,413 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:34,413 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:34,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:34,415 INFO L933 BasicCegarLoop]: 4280 mSDtfsCounter, 4412 mSDsluCounter, 8285 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4426 SdHoareTripleChecker+Valid, 12565 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:34,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4426 Valid, 12565 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:34,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:34,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8375) internal successors, (4263), 2322 states have internal predecessors, (4263), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:34,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4303 transitions. [2022-01-10 07:50:34,467 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4303 transitions. Word has length 112 [2022-01-10 07:50:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:34,467 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4303 transitions. [2022-01-10 07:50:34,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:34,468 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4303 transitions. [2022-01-10 07:50:34,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:34,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:34,469 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] [2022-01-10 07:50:34,481 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 07:50:34,679 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 07:50:34,679 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:34,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:34,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1846867167, now seen corresponding path program 1 times [2022-01-10 07:50:34,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:34,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1092747334] [2022-01-10 07:50:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:34,681 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:34,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:34,682 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 07:50:34,684 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 07:50:34,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:34,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:34,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:34,987 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 07:50:34,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:34,988 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:34,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1092747334] [2022-01-10 07:50:34,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1092747334] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:34,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:34,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:34,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298389000] [2022-01-10 07:50:34,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:34,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:34,994 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:34,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:34,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:34,995 INFO L87 Difference]: Start difference. First operand 2348 states and 4303 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:35,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:35,433 INFO L93 Difference]: Finished difference Result 2561 states and 4630 transitions. [2022-01-10 07:50:35,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:35,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:35,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:35,442 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:35,442 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:35,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:35,446 INFO L933 BasicCegarLoop]: 4277 mSDtfsCounter, 4406 mSDsluCounter, 8281 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4420 SdHoareTripleChecker+Valid, 12558 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:35,447 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4420 Valid, 12558 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:35,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:35,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:35,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8362068965517242) internal successors, (4260), 2322 states have internal predecessors, (4260), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4300 transitions. [2022-01-10 07:50:35,495 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4300 transitions. Word has length 112 [2022-01-10 07:50:35,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:35,496 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4300 transitions. [2022-01-10 07:50:35,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:35,496 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4300 transitions. [2022-01-10 07:50:35,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:35,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:35,498 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] [2022-01-10 07:50:35,513 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 07:50:35,707 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 07:50:35,708 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:35,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:35,708 INFO L85 PathProgramCache]: Analyzing trace with hash 963358177, now seen corresponding path program 1 times [2022-01-10 07:50:35,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:35,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1193937986] [2022-01-10 07:50:35,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:35,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:35,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:35,710 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 07:50:35,711 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 07:50:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:35,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:35,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:36,019 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 07:50:36,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:36,020 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:36,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1193937986] [2022-01-10 07:50:36,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1193937986] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:36,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:36,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:36,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987003564] [2022-01-10 07:50:36,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:36,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:36,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:36,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:36,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:36,021 INFO L87 Difference]: Start difference. First operand 2348 states and 4300 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:36,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:36,300 INFO L93 Difference]: Finished difference Result 2561 states and 4624 transitions. [2022-01-10 07:50:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:36,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:36,310 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:36,310 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:36,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:36,312 INFO L933 BasicCegarLoop]: 4274 mSDtfsCounter, 4400 mSDsluCounter, 8277 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4414 SdHoareTripleChecker+Valid, 12551 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:36,313 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4414 Valid, 12551 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:36,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:36,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:36,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8349137931034483) internal successors, (4257), 2322 states have internal predecessors, (4257), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:36,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4297 transitions. [2022-01-10 07:50:36,362 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4297 transitions. Word has length 112 [2022-01-10 07:50:36,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:36,362 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4297 transitions. [2022-01-10 07:50:36,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:36,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4297 transitions. [2022-01-10 07:50:36,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:36,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:36,363 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] [2022-01-10 07:50:36,376 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 07:50:36,573 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 07:50:36,574 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:36,574 INFO L85 PathProgramCache]: Analyzing trace with hash 957490141, now seen corresponding path program 1 times [2022-01-10 07:50:36,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:36,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1318007568] [2022-01-10 07:50:36,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:36,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:36,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:36,576 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 07:50:36,578 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 07:50:36,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:36,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:36,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:36,866 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 07:50:36,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:36,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:36,867 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1318007568] [2022-01-10 07:50:36,867 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1318007568] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:36,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:36,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:36,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938143132] [2022-01-10 07:50:36,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:36,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:36,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:36,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:36,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:36,869 INFO L87 Difference]: Start difference. First operand 2348 states and 4297 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:37,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:37,143 INFO L93 Difference]: Finished difference Result 2561 states and 4618 transitions. [2022-01-10 07:50:37,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:37,144 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:37,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:37,153 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:37,153 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:37,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:37,155 INFO L933 BasicCegarLoop]: 4271 mSDtfsCounter, 4394 mSDsluCounter, 8273 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4408 SdHoareTripleChecker+Valid, 12544 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:37,155 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4408 Valid, 12544 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:37,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:37,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8336206896551723) internal successors, (4254), 2322 states have internal predecessors, (4254), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:37,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4294 transitions. [2022-01-10 07:50:37,205 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4294 transitions. Word has length 112 [2022-01-10 07:50:37,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:37,206 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4294 transitions. [2022-01-10 07:50:37,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:37,206 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4294 transitions. [2022-01-10 07:50:37,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:37,207 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:37,207 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] [2022-01-10 07:50:37,219 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 07:50:37,416 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 07:50:37,417 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:37,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:37,417 INFO L85 PathProgramCache]: Analyzing trace with hash 403111521, now seen corresponding path program 1 times [2022-01-10 07:50:37,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:37,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785150617] [2022-01-10 07:50:37,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:37,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:37,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:37,420 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 07:50:37,422 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 07:50:37,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:37,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:37,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:37,710 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 07:50:37,710 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:37,710 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:37,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785150617] [2022-01-10 07:50:37,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785150617] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:37,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:37,711 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:37,711 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682015400] [2022-01-10 07:50:37,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:37,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:37,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:37,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:37,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:37,712 INFO L87 Difference]: Start difference. First operand 2348 states and 4294 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:37,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:37,972 INFO L93 Difference]: Finished difference Result 2561 states and 4612 transitions. [2022-01-10 07:50:37,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:37,972 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:37,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:37,981 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:37,981 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:37,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:37,983 INFO L933 BasicCegarLoop]: 4268 mSDtfsCounter, 4388 mSDsluCounter, 8269 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4402 SdHoareTripleChecker+Valid, 12537 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:37,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4402 Valid, 12537 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:37,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:38,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:38,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8323275862068966) internal successors, (4251), 2322 states have internal predecessors, (4251), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:38,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4291 transitions. [2022-01-10 07:50:38,029 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4291 transitions. Word has length 112 [2022-01-10 07:50:38,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:38,030 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4291 transitions. [2022-01-10 07:50:38,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:38,030 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4291 transitions. [2022-01-10 07:50:38,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:38,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:38,031 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] [2022-01-10 07:50:38,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:38,241 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 07:50:38,242 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:38,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:38,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1770701661, now seen corresponding path program 1 times [2022-01-10 07:50:38,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:38,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1187315203] [2022-01-10 07:50:38,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:38,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:38,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:38,244 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 07:50:38,247 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 07:50:38,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:38,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 293 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:38,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:38,514 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 07:50:38,514 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:38,514 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:38,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1187315203] [2022-01-10 07:50:38,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1187315203] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:38,514 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:38,514 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:38,515 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959081817] [2022-01-10 07:50:38,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:38,515 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:38,515 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:38,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:38,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:38,516 INFO L87 Difference]: Start difference. First operand 2348 states and 4291 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:38,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:38,777 INFO L93 Difference]: Finished difference Result 2561 states and 4606 transitions. [2022-01-10 07:50:38,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:38,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:38,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:38,786 INFO L225 Difference]: With dead ends: 2561 [2022-01-10 07:50:38,786 INFO L226 Difference]: Without dead ends: 2348 [2022-01-10 07:50:38,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:38,788 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 4382 mSDsluCounter, 8265 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4396 SdHoareTripleChecker+Valid, 12530 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:38,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4396 Valid, 12530 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:38,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2348 states. [2022-01-10 07:50:38,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2348 to 2348. [2022-01-10 07:50:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2348 states, 2320 states have (on average 1.8310344827586207) internal successors, (4248), 2322 states have internal predecessors, (4248), 20 states have call successors, (20), 6 states have call predecessors, (20), 6 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-01-10 07:50:38,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2348 states to 2348 states and 4288 transitions. [2022-01-10 07:50:38,835 INFO L78 Accepts]: Start accepts. Automaton has 2348 states and 4288 transitions. Word has length 112 [2022-01-10 07:50:38,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:38,835 INFO L470 AbstractCegarLoop]: Abstraction has 2348 states and 4288 transitions. [2022-01-10 07:50:38,836 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:38,836 INFO L276 IsEmpty]: Start isEmpty. Operand 2348 states and 4288 transitions. [2022-01-10 07:50:38,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:38,837 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:38,837 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] [2022-01-10 07:50:38,849 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 07:50:39,046 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 07:50:39,047 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:39,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:39,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1371771167, now seen corresponding path program 1 times [2022-01-10 07:50:39,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:39,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1818603853] [2022-01-10 07:50:39,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:39,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:39,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:39,050 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 07:50:39,052 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 07:50:39,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:39,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 291 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:39,152 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:39,352 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 07:50:39,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:39,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:39,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1818603853] [2022-01-10 07:50:39,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1818603853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:39,353 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:39,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:39,353 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152463801] [2022-01-10 07:50:39,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:39,353 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:39,354 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:39,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:39,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:39,357 INFO L87 Difference]: Start difference. First operand 2348 states and 4288 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:39,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:39,765 INFO L93 Difference]: Finished difference Result 2615 states and 4684 transitions. [2022-01-10 07:50:39,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:39,766 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:39,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:39,781 INFO L225 Difference]: With dead ends: 2615 [2022-01-10 07:50:39,781 INFO L226 Difference]: Without dead ends: 2402 [2022-01-10 07:50:39,784 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:39,784 INFO L933 BasicCegarLoop]: 4262 mSDtfsCounter, 4442 mSDsluCounter, 8260 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4456 SdHoareTripleChecker+Valid, 12522 SdHoareTripleChecker+Invalid, 291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:39,785 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4456 Valid, 12522 Invalid, 291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 259 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:39,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2402 states. [2022-01-10 07:50:39,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2402 to 2402. [2022-01-10 07:50:39,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2402 states, 2371 states have (on average 1.8203289751159848) internal successors, (4316), 2373 states have internal predecessors, (4316), 21 states have call successors, (21), 8 states have call predecessors, (21), 8 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-01-10 07:50:39,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2402 states to 2402 states and 4358 transitions. [2022-01-10 07:50:39,838 INFO L78 Accepts]: Start accepts. Automaton has 2402 states and 4358 transitions. Word has length 112 [2022-01-10 07:50:39,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:39,838 INFO L470 AbstractCegarLoop]: Abstraction has 2402 states and 4358 transitions. [2022-01-10 07:50:39,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:39,838 INFO L276 IsEmpty]: Start isEmpty. Operand 2402 states and 4358 transitions. [2022-01-10 07:50:39,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:39,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:39,839 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] [2022-01-10 07:50:39,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:40,049 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 07:50:40,049 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:40,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:40,050 INFO L85 PathProgramCache]: Analyzing trace with hash 148228254, now seen corresponding path program 1 times [2022-01-10 07:50:40,050 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:40,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1152621524] [2022-01-10 07:50:40,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:40,050 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:40,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:40,051 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 07:50:40,053 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 07:50:40,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:40,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:40,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:40,332 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 07:50:40,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:40,333 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:40,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1152621524] [2022-01-10 07:50:40,333 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1152621524] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:40,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:40,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:40,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740364797] [2022-01-10 07:50:40,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:40,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:40,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:40,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:40,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:40,334 INFO L87 Difference]: Start difference. First operand 2402 states and 4358 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:40,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:40,689 INFO L93 Difference]: Finished difference Result 2723 states and 4824 transitions. [2022-01-10 07:50:40,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:40,689 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:40,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:40,698 INFO L225 Difference]: With dead ends: 2723 [2022-01-10 07:50:40,699 INFO L226 Difference]: Without dead ends: 2456 [2022-01-10 07:50:40,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:40,701 INFO L933 BasicCegarLoop]: 4259 mSDtfsCounter, 4434 mSDsluCounter, 8256 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4448 SdHoareTripleChecker+Valid, 12515 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:40,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4448 Valid, 12515 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:40,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2022-01-10 07:50:40,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 2456. [2022-01-10 07:50:40,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2456 states, 2422 states have (on average 1.8092485549132948) internal successors, (4382), 2424 states have internal predecessors, (4382), 22 states have call successors, (22), 10 states have call predecessors, (22), 10 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-10 07:50:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2456 states to 2456 states and 4426 transitions. [2022-01-10 07:50:40,757 INFO L78 Accepts]: Start accepts. Automaton has 2456 states and 4426 transitions. Word has length 112 [2022-01-10 07:50:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:40,757 INFO L470 AbstractCegarLoop]: Abstraction has 2456 states and 4426 transitions. [2022-01-10 07:50:40,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2456 states and 4426 transitions. [2022-01-10 07:50:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:40,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:40,759 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] [2022-01-10 07:50:40,771 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 07:50:40,968 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 07:50:40,969 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1566717221, now seen corresponding path program 1 times [2022-01-10 07:50:40,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:40,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2075320294] [2022-01-10 07:50:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:40,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:40,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:40,972 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 07:50:40,974 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 07:50:41,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:41,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:41,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:41,293 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 07:50:41,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:41,293 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:41,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2075320294] [2022-01-10 07:50:41,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2075320294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:41,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:41,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:41,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823187889] [2022-01-10 07:50:41,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:41,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:41,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:41,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:41,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:41,295 INFO L87 Difference]: Start difference. First operand 2456 states and 4426 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:41,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:41,672 INFO L93 Difference]: Finished difference Result 2831 states and 4960 transitions. [2022-01-10 07:50:41,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:41,672 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:41,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:41,690 INFO L225 Difference]: With dead ends: 2831 [2022-01-10 07:50:41,691 INFO L226 Difference]: Without dead ends: 2510 [2022-01-10 07:50:41,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:41,693 INFO L933 BasicCegarLoop]: 4255 mSDtfsCounter, 4428 mSDsluCounter, 8252 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4442 SdHoareTripleChecker+Valid, 12507 SdHoareTripleChecker+Invalid, 288 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:41,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4442 Valid, 12507 Invalid, 288 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:41,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2510 states. [2022-01-10 07:50:41,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2510 to 2510. [2022-01-10 07:50:41,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2510 states, 2473 states have (on average 1.7978164173069147) internal successors, (4446), 2475 states have internal predecessors, (4446), 23 states have call successors, (23), 12 states have call predecessors, (23), 12 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-01-10 07:50:41,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2510 states to 2510 states and 4492 transitions. [2022-01-10 07:50:41,766 INFO L78 Accepts]: Start accepts. Automaton has 2510 states and 4492 transitions. Word has length 112 [2022-01-10 07:50:41,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:41,766 INFO L470 AbstractCegarLoop]: Abstraction has 2510 states and 4492 transitions. [2022-01-10 07:50:41,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:41,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2510 states and 4492 transitions. [2022-01-10 07:50:41,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:41,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:41,768 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] [2022-01-10 07:50:41,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:41,977 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 07:50:41,978 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:41,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:41,978 INFO L85 PathProgramCache]: Analyzing trace with hash -721565218, now seen corresponding path program 1 times [2022-01-10 07:50:41,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:41,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270051070] [2022-01-10 07:50:41,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:41,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:41,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:41,980 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 07:50:42,042 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 07:50:42,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:42,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:42,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:42,308 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 07:50:42,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:42,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:42,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270051070] [2022-01-10 07:50:42,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270051070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:42,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:42,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:42,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486998584] [2022-01-10 07:50:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:42,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:42,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:42,310 INFO L87 Difference]: Start difference. First operand 2510 states and 4492 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:42,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:42,663 INFO L93 Difference]: Finished difference Result 2939 states and 5092 transitions. [2022-01-10 07:50:42,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:42,664 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:42,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:42,671 INFO L225 Difference]: With dead ends: 2939 [2022-01-10 07:50:42,672 INFO L226 Difference]: Without dead ends: 2564 [2022-01-10 07:50:42,673 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:42,674 INFO L933 BasicCegarLoop]: 4252 mSDtfsCounter, 4421 mSDsluCounter, 8248 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4435 SdHoareTripleChecker+Valid, 12500 SdHoareTripleChecker+Invalid, 287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:42,674 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4435 Valid, 12500 Invalid, 287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:42,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2564 states. [2022-01-10 07:50:42,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2564 to 2564. [2022-01-10 07:50:42,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2564 states, 2524 states have (on average 1.786053882725832) internal successors, (4508), 2526 states have internal predecessors, (4508), 24 states have call successors, (24), 14 states have call predecessors, (24), 14 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:50:42,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2564 states to 2564 states and 4556 transitions. [2022-01-10 07:50:42,728 INFO L78 Accepts]: Start accepts. Automaton has 2564 states and 4556 transitions. Word has length 112 [2022-01-10 07:50:42,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:42,729 INFO L470 AbstractCegarLoop]: Abstraction has 2564 states and 4556 transitions. [2022-01-10 07:50:42,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:42,729 INFO L276 IsEmpty]: Start isEmpty. Operand 2564 states and 4556 transitions. [2022-01-10 07:50:42,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:42,730 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:42,730 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] [2022-01-10 07:50:42,740 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 07:50:42,939 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 07:50:42,940 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:42,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:42,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1913125850, now seen corresponding path program 1 times [2022-01-10 07:50:42,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:42,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [479140511] [2022-01-10 07:50:42,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:42,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:42,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:42,942 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 07:50:42,944 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 07:50:43,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:43,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:43,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:43,198 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 07:50:43,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:43,198 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:43,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [479140511] [2022-01-10 07:50:43,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [479140511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:43,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:43,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:43,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261554532] [2022-01-10 07:50:43,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:43,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:43,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:43,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:43,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:43,200 INFO L87 Difference]: Start difference. First operand 2564 states and 4556 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:43,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:43,535 INFO L93 Difference]: Finished difference Result 3047 states and 5220 transitions. [2022-01-10 07:50:43,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:43,535 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:43,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:43,541 INFO L225 Difference]: With dead ends: 3047 [2022-01-10 07:50:43,541 INFO L226 Difference]: Without dead ends: 2618 [2022-01-10 07:50:43,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:43,543 INFO L933 BasicCegarLoop]: 4249 mSDtfsCounter, 4414 mSDsluCounter, 8244 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4428 SdHoareTripleChecker+Valid, 12493 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:43,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4428 Valid, 12493 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:43,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2618 states. [2022-01-10 07:50:43,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2618 to 2618. [2022-01-10 07:50:43,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2618 states, 2575 states have (on average 1.7739805825242718) internal successors, (4568), 2577 states have internal predecessors, (4568), 25 states have call successors, (25), 16 states have call predecessors, (25), 16 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:50:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2618 states to 2618 states and 4618 transitions. [2022-01-10 07:50:43,597 INFO L78 Accepts]: Start accepts. Automaton has 2618 states and 4618 transitions. Word has length 112 [2022-01-10 07:50:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:43,597 INFO L470 AbstractCegarLoop]: Abstraction has 2618 states and 4618 transitions. [2022-01-10 07:50:43,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:43,598 INFO L276 IsEmpty]: Start isEmpty. Operand 2618 states and 4618 transitions. [2022-01-10 07:50:43,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:43,599 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:43,599 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] [2022-01-10 07:50:43,608 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 07:50:43,808 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 07:50:43,808 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:43,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1767241695, now seen corresponding path program 1 times [2022-01-10 07:50:43,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:43,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [552298783] [2022-01-10 07:50:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:43,810 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:43,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:43,810 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 07:50:43,811 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 07:50:43,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:43,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:43,909 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:44,076 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 07:50:44,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:44,076 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:44,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [552298783] [2022-01-10 07:50:44,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [552298783] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:44,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:44,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:44,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960175499] [2022-01-10 07:50:44,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:44,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:44,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:44,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:44,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:44,078 INFO L87 Difference]: Start difference. First operand 2618 states and 4618 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:44,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:44,399 INFO L93 Difference]: Finished difference Result 3155 states and 5344 transitions. [2022-01-10 07:50:44,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:44,399 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:44,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:44,405 INFO L225 Difference]: With dead ends: 3155 [2022-01-10 07:50:44,405 INFO L226 Difference]: Without dead ends: 2672 [2022-01-10 07:50:44,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 108 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 07:50:44,408 INFO L933 BasicCegarLoop]: 4246 mSDtfsCounter, 4407 mSDsluCounter, 8240 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4421 SdHoareTripleChecker+Valid, 12486 SdHoareTripleChecker+Invalid, 285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:44,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4421 Valid, 12486 Invalid, 285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:44,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2672 states. [2022-01-10 07:50:44,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2672 to 2672. [2022-01-10 07:50:44,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2672 states, 2626 states have (on average 1.7616146230007617) internal successors, (4626), 2628 states have internal predecessors, (4626), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:44,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2672 states to 2672 states and 4678 transitions. [2022-01-10 07:50:44,464 INFO L78 Accepts]: Start accepts. Automaton has 2672 states and 4678 transitions. Word has length 112 [2022-01-10 07:50:44,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:44,464 INFO L470 AbstractCegarLoop]: Abstraction has 2672 states and 4678 transitions. [2022-01-10 07:50:44,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 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 07:50:44,465 INFO L276 IsEmpty]: Start isEmpty. Operand 2672 states and 4678 transitions. [2022-01-10 07:50:44,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:44,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:44,466 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] [2022-01-10 07:50:44,475 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 07:50:44,683 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 07:50:44,683 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:44,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:44,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1778616101, now seen corresponding path program 1 times [2022-01-10 07:50:44,684 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:44,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1570313300] [2022-01-10 07:50:44,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:44,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:44,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:44,686 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 07:50:44,687 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 07:50:44,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:44,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:44,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:44,912 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 07:50:44,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:44,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:44,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1570313300] [2022-01-10 07:50:44,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1570313300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:44,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:44,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:44,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581306046] [2022-01-10 07:50:44,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:44,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:44,913 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:44,914 INFO L87 Difference]: Start difference. First operand 2672 states and 4678 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:44,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:44,997 INFO L93 Difference]: Finished difference Result 3299 states and 5509 transitions. [2022-01-10 07:50:44,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:44,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:44,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:45,006 INFO L225 Difference]: With dead ends: 3299 [2022-01-10 07:50:45,006 INFO L226 Difference]: Without dead ends: 2763 [2022-01-10 07:50:45,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:45,009 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 245 mSDsluCounter, 12895 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 17162 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 07:50:45,009 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 17162 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:45,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2763 states. [2022-01-10 07:50:45,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2763 to 2675. [2022-01-10 07:50:45,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2629 states have (on average 1.7584632940281475) internal successors, (4623), 2631 states have internal predecessors, (4623), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:45,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4675 transitions. [2022-01-10 07:50:45,073 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4675 transitions. Word has length 112 [2022-01-10 07:50:45,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:45,073 INFO L470 AbstractCegarLoop]: Abstraction has 2675 states and 4675 transitions. [2022-01-10 07:50:45,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:45,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4675 transitions. [2022-01-10 07:50:45,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:45,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:45,074 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] [2022-01-10 07:50:45,084 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 07:50:45,284 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 07:50:45,284 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:45,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:45,284 INFO L85 PathProgramCache]: Analyzing trace with hash 605308637, now seen corresponding path program 1 times [2022-01-10 07:50:45,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:45,285 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908265182] [2022-01-10 07:50:45,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:45,285 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:45,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:45,286 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 07:50:45,288 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 07:50:45,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:45,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:45,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:45,529 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 07:50:45,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:45,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:45,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908265182] [2022-01-10 07:50:45,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908265182] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:45,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:45,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:45,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324130180] [2022-01-10 07:50:45,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:45,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:45,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:45,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:45,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:45,531 INFO L87 Difference]: Start difference. First operand 2675 states and 4675 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:45,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:45,633 INFO L93 Difference]: Finished difference Result 3753 states and 6087 transitions. [2022-01-10 07:50:45,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:45,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:45,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:45,641 INFO L225 Difference]: With dead ends: 3753 [2022-01-10 07:50:45,641 INFO L226 Difference]: Without dead ends: 3214 [2022-01-10 07:50:45,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:45,643 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 210 mSDsluCounter, 12900 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 17167 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 07:50:45,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 17167 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:45,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3214 states. [2022-01-10 07:50:45,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3214 to 2696. [2022-01-10 07:50:45,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2696 states, 2650 states have (on average 1.7524528301886793) internal successors, (4644), 2652 states have internal predecessors, (4644), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:45,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2696 states to 2696 states and 4696 transitions. [2022-01-10 07:50:45,716 INFO L78 Accepts]: Start accepts. Automaton has 2696 states and 4696 transitions. Word has length 112 [2022-01-10 07:50:45,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:45,716 INFO L470 AbstractCegarLoop]: Abstraction has 2696 states and 4696 transitions. [2022-01-10 07:50:45,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:45,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2696 states and 4696 transitions. [2022-01-10 07:50:45,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:45,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:45,718 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] [2022-01-10 07:50:45,729 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 07:50:45,927 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 07:50:45,927 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:45,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:45,928 INFO L85 PathProgramCache]: Analyzing trace with hash -610845089, now seen corresponding path program 1 times [2022-01-10 07:50:45,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:45,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1131295574] [2022-01-10 07:50:45,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:45,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:45,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:45,929 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 07:50:45,930 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 07:50:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:46,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:46,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:46,175 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 07:50:46,176 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:46,176 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:46,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1131295574] [2022-01-10 07:50:46,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1131295574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:46,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:46,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:46,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47263491] [2022-01-10 07:50:46,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:46,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:46,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:46,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:46,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:46,177 INFO L87 Difference]: Start difference. First operand 2696 states and 4696 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:46,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:46,283 INFO L93 Difference]: Finished difference Result 3319 states and 5507 transitions. [2022-01-10 07:50:46,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:46,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:46,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:46,289 INFO L225 Difference]: With dead ends: 3319 [2022-01-10 07:50:46,289 INFO L226 Difference]: Without dead ends: 2759 [2022-01-10 07:50:46,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:46,292 INFO L933 BasicCegarLoop]: 4269 mSDtfsCounter, 166 mSDsluCounter, 12866 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 17135 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 07:50:46,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 17135 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:46,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2759 states. [2022-01-10 07:50:46,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2759 to 2699. [2022-01-10 07:50:46,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2699 states, 2653 states have (on average 1.7493403693931397) internal successors, (4641), 2655 states have internal predecessors, (4641), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:46,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2699 states to 2699 states and 4693 transitions. [2022-01-10 07:50:46,355 INFO L78 Accepts]: Start accepts. Automaton has 2699 states and 4693 transitions. Word has length 112 [2022-01-10 07:50:46,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:46,356 INFO L470 AbstractCegarLoop]: Abstraction has 2699 states and 4693 transitions. [2022-01-10 07:50:46,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:46,356 INFO L276 IsEmpty]: Start isEmpty. Operand 2699 states and 4693 transitions. [2022-01-10 07:50:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:46,357 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:46,357 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:46,366 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 07:50:46,566 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 07:50:46,566 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:46,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:46,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1350729569, now seen corresponding path program 1 times [2022-01-10 07:50:46,567 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:46,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1063743364] [2022-01-10 07:50:46,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:46,567 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:46,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:46,568 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 07:50:46,628 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 07:50:46,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:46,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:46,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:46,840 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 07:50:46,840 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:46,840 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:46,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1063743364] [2022-01-10 07:50:46,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1063743364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:46,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:46,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:46,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8838205] [2022-01-10 07:50:46,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:46,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:46,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:46,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:46,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:46,841 INFO L87 Difference]: Start difference. First operand 2699 states and 4693 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:46,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:46,911 INFO L93 Difference]: Finished difference Result 3311 states and 5483 transitions. [2022-01-10 07:50:46,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:46,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:46,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:46,917 INFO L225 Difference]: With dead ends: 3311 [2022-01-10 07:50:46,917 INFO L226 Difference]: Without dead ends: 2748 [2022-01-10 07:50:46,919 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:46,919 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 127 mSDsluCounter, 12845 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 17112 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 07:50:46,920 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 17112 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:46,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2748 states. [2022-01-10 07:50:46,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2748 to 2702. [2022-01-10 07:50:46,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2702 states, 2656 states have (on average 1.7462349397590362) internal successors, (4638), 2658 states have internal predecessors, (4638), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:46,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2702 states to 2702 states and 4690 transitions. [2022-01-10 07:50:46,982 INFO L78 Accepts]: Start accepts. Automaton has 2702 states and 4690 transitions. Word has length 112 [2022-01-10 07:50:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:46,982 INFO L470 AbstractCegarLoop]: Abstraction has 2702 states and 4690 transitions. [2022-01-10 07:50:46,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:46,982 INFO L276 IsEmpty]: Start isEmpty. Operand 2702 states and 4690 transitions. [2022-01-10 07:50:46,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:46,983 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:46,984 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] [2022-01-10 07:50:46,992 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 07:50:47,192 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 07:50:47,193 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:47,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:47,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1557452317, now seen corresponding path program 1 times [2022-01-10 07:50:47,193 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:47,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1540987297] [2022-01-10 07:50:47,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:47,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:47,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:47,195 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 07:50:47,196 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 07:50:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:47,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:47,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:47,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:47,437 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:47,437 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:47,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1540987297] [2022-01-10 07:50:47,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1540987297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:47,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:47,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:47,438 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501888012] [2022-01-10 07:50:47,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:47,438 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:47,438 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:47,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:47,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:47,439 INFO L87 Difference]: Start difference. First operand 2702 states and 4690 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:47,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:47,534 INFO L93 Difference]: Finished difference Result 3289 states and 5441 transitions. [2022-01-10 07:50:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:47,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:47,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:47,539 INFO L225 Difference]: With dead ends: 3289 [2022-01-10 07:50:47,540 INFO L226 Difference]: Without dead ends: 2723 [2022-01-10 07:50:47,541 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:47,541 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 49 mSDsluCounter, 12815 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 17082 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 07:50:47,542 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 17082 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:47,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2022-01-10 07:50:47,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2705. [2022-01-10 07:50:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2705 states, 2659 states have (on average 1.7431365174877773) internal successors, (4635), 2661 states have internal predecessors, (4635), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:47,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2705 states to 2705 states and 4687 transitions. [2022-01-10 07:50:47,605 INFO L78 Accepts]: Start accepts. Automaton has 2705 states and 4687 transitions. Word has length 112 [2022-01-10 07:50:47,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:47,606 INFO L470 AbstractCegarLoop]: Abstraction has 2705 states and 4687 transitions. [2022-01-10 07:50:47,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:47,606 INFO L276 IsEmpty]: Start isEmpty. Operand 2705 states and 4687 transitions. [2022-01-10 07:50:47,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:47,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:47,607 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] [2022-01-10 07:50:47,618 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 07:50:47,815 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 07:50:47,816 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:47,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:47,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1840121701, now seen corresponding path program 1 times [2022-01-10 07:50:47,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:47,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1108274068] [2022-01-10 07:50:47,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:47,817 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:47,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:47,818 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 07:50:47,855 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 07:50:47,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:47,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:47,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:48,045 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 07:50:48,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:48,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1108274068] [2022-01-10 07:50:48,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1108274068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:48,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:48,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:48,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997506200] [2022-01-10 07:50:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:48,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:48,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:48,047 INFO L87 Difference]: Start difference. First operand 2705 states and 4687 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:48,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:48,118 INFO L93 Difference]: Finished difference Result 3281 states and 5417 transitions. [2022-01-10 07:50:48,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:48,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:48,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:48,124 INFO L225 Difference]: With dead ends: 3281 [2022-01-10 07:50:48,124 INFO L226 Difference]: Without dead ends: 2712 [2022-01-10 07:50:48,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 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 07:50:48,126 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 10 mSDsluCounter, 12800 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17067 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 07:50:48,126 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17067 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:48,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2712 states. [2022-01-10 07:50:48,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2712 to 2708. [2022-01-10 07:50:48,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2662 states have (on average 1.7400450788880542) internal successors, (4632), 2664 states have internal predecessors, (4632), 26 states have call successors, (26), 18 states have call predecessors, (26), 18 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:50:48,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 4684 transitions. [2022-01-10 07:50:48,191 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 4684 transitions. Word has length 112 [2022-01-10 07:50:48,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:48,191 INFO L470 AbstractCegarLoop]: Abstraction has 2708 states and 4684 transitions. [2022-01-10 07:50:48,192 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 5 states have internal predecessors, (102), 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 07:50:48,192 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 4684 transitions. [2022-01-10 07:50:48,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:48,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:48,193 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] [2022-01-10 07:50:48,204 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:50:48,402 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 07:50:48,402 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:48,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:48,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1795314073, now seen corresponding path program 1 times [2022-01-10 07:50:48,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [954410497] [2022-01-10 07:50:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:48,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:48,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:48,404 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 07:50:48,405 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 07:50:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:48,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:50:48,483 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:48,694 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 07:50:48,695 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:48,695 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:48,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [954410497] [2022-01-10 07:50:48,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [954410497] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:48,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:48,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:48,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478440061] [2022-01-10 07:50:48,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:48,696 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:48,696 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:48,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:48,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:48,696 INFO L87 Difference]: Start difference. First operand 2708 states and 4684 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:49,086 INFO L93 Difference]: Finished difference Result 3878 states and 6118 transitions. [2022-01-10 07:50:49,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 07:50:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:49,094 INFO L225 Difference]: With dead ends: 3878 [2022-01-10 07:50:49,094 INFO L226 Difference]: Without dead ends: 3305 [2022-01-10 07:50:49,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:49,098 INFO L933 BasicCegarLoop]: 4298 mSDtfsCounter, 4412 mSDsluCounter, 8485 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4425 SdHoareTripleChecker+Valid, 12783 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:49,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4425 Valid, 12783 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:49,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3305 states. [2022-01-10 07:50:49,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3305 to 3288. [2022-01-10 07:50:49,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3288 states, 3202 states have (on average 1.6539662710805747) internal successors, (5296), 3205 states have internal predecessors, (5296), 47 states have call successors, (47), 36 states have call predecessors, (47), 37 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:50:49,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3288 states to 3288 states and 5391 transitions. [2022-01-10 07:50:49,206 INFO L78 Accepts]: Start accepts. Automaton has 3288 states and 5391 transitions. Word has length 112 [2022-01-10 07:50:49,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:49,207 INFO L470 AbstractCegarLoop]: Abstraction has 3288 states and 5391 transitions. [2022-01-10 07:50:49,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:49,207 INFO L276 IsEmpty]: Start isEmpty. Operand 3288 states and 5391 transitions. [2022-01-10 07:50:49,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:49,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:49,208 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] [2022-01-10 07:50:49,220 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 07:50:49,418 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 07:50:49,418 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:49,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:49,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1867700631, now seen corresponding path program 1 times [2022-01-10 07:50:49,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:49,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362007479] [2022-01-10 07:50:49,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:49,419 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:49,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:49,420 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 07:50:49,422 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 07:50:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:49,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:50:49,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:49,724 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 07:50:49,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:49,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:49,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362007479] [2022-01-10 07:50:49,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362007479] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:49,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:49,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:49,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071088617] [2022-01-10 07:50:49,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:49,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:49,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:49,726 INFO L87 Difference]: Start difference. First operand 3288 states and 5391 transitions. Second operand has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:50,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:50,164 INFO L93 Difference]: Finished difference Result 4585 states and 6997 transitions. [2022-01-10 07:50:50,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:50,165 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 112 [2022-01-10 07:50:50,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:50,176 INFO L225 Difference]: With dead ends: 4585 [2022-01-10 07:50:50,177 INFO L226 Difference]: Without dead ends: 3432 [2022-01-10 07:50:50,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:50,181 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 4386 mSDsluCounter, 8236 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4399 SdHoareTripleChecker+Valid, 12528 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:50,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4399 Valid, 12528 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3432 states. [2022-01-10 07:50:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3432 to 3354. [2022-01-10 07:50:50,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3354 states, 3266 states have (on average 1.636558481322719) internal successors, (5345), 3269 states have internal predecessors, (5345), 47 states have call successors, (47), 38 states have call predecessors, (47), 39 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 07:50:50,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 5440 transitions. [2022-01-10 07:50:50,445 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 5440 transitions. Word has length 112 [2022-01-10 07:50:50,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:50,445 INFO L470 AbstractCegarLoop]: Abstraction has 3354 states and 5440 transitions. [2022-01-10 07:50:50,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.4) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:50,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 5440 transitions. [2022-01-10 07:50:50,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-01-10 07:50:50,447 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:50,447 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] [2022-01-10 07:50:50,459 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 07:50:50,650 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 07:50:50,650 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:50,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:50,651 INFO L85 PathProgramCache]: Analyzing trace with hash -1727152021, now seen corresponding path program 1 times [2022-01-10 07:50:50,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:50,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [234692746] [2022-01-10 07:50:50,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:50,652 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:50,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:50,653 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 07:50:50,654 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 07:50:50,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:50,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:50,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:50,961 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 07:50:50,962 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:50,962 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:50,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [234692746] [2022-01-10 07:50:50,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [234692746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:50,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:50,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:50,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080238238] [2022-01-10 07:50:50,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:50,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:50,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:50,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:50,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:50,964 INFO L87 Difference]: Start difference. First operand 3354 states and 5440 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 07:50:51,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:51,173 INFO L93 Difference]: Finished difference Result 5759 states and 8349 transitions. [2022-01-10 07:50:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:51,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 112 [2022-01-10 07:50:51,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:51,184 INFO L225 Difference]: With dead ends: 5759 [2022-01-10 07:50:51,184 INFO L226 Difference]: Without dead ends: 4541 [2022-01-10 07:50:51,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 07:50:51,188 INFO L933 BasicCegarLoop]: 4318 mSDtfsCounter, 4147 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4147 SdHoareTripleChecker+Valid, 4594 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 07:50:51,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4147 Valid, 4594 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:51,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4541 states. [2022-01-10 07:50:51,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4541 to 4539. [2022-01-10 07:50:51,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4539 states, 4369 states have (on average 1.523689631494621) internal successors, (6657), 4375 states have internal predecessors, (6657), 90 states have call successors, (90), 76 states have call predecessors, (90), 78 states have return successors, (92), 88 states have call predecessors, (92), 90 states have call successors, (92) [2022-01-10 07:50:51,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4539 states to 4539 states and 6839 transitions. [2022-01-10 07:50:51,417 INFO L78 Accepts]: Start accepts. Automaton has 4539 states and 6839 transitions. Word has length 112 [2022-01-10 07:50:51,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:51,417 INFO L470 AbstractCegarLoop]: Abstraction has 4539 states and 6839 transitions. [2022-01-10 07:50:51,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 2 states have internal predecessors, (102), 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 07:50:51,417 INFO L276 IsEmpty]: Start isEmpty. Operand 4539 states and 6839 transitions. [2022-01-10 07:50:51,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 07:50:51,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:51,421 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:51,433 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 07:50:51,630 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 07:50:51,631 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:51,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:51,632 INFO L85 PathProgramCache]: Analyzing trace with hash -2060590956, now seen corresponding path program 1 times [2022-01-10 07:50:51,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:51,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1295755964] [2022-01-10 07:50:51,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:51,633 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:51,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:51,634 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 07:50:51,636 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 07:50:51,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:51,762 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:51,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:52,064 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:52,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:52,064 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:52,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1295755964] [2022-01-10 07:50:52,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1295755964] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:52,065 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:52,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:52,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863362597] [2022-01-10 07:50:52,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:52,065 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:52,065 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:52,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:52,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:52,066 INFO L87 Difference]: Start difference. First operand 4539 states and 6839 transitions. Second operand has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 07:50:52,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:52,521 INFO L93 Difference]: Finished difference Result 9226 states and 12417 transitions. [2022-01-10 07:50:52,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:52,522 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 182 [2022-01-10 07:50:52,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:52,536 INFO L225 Difference]: With dead ends: 9226 [2022-01-10 07:50:52,536 INFO L226 Difference]: Without dead ends: 6824 [2022-01-10 07:50:52,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 180 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 07:50:52,547 INFO L933 BasicCegarLoop]: 4389 mSDtfsCounter, 4337 mSDsluCounter, 4464 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4343 SdHoareTripleChecker+Valid, 8853 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:52,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4343 Valid, 8853 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:52,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6824 states. [2022-01-10 07:50:53,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6824 to 6822. [2022-01-10 07:50:53,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6822 states, 6493 states have (on average 1.4130602186970584) internal successors, (9175), 6508 states have internal predecessors, (9175), 171 states have call successors, (171), 144 states have call predecessors, (171), 156 states have return successors, (195), 171 states have call predecessors, (195), 171 states have call successors, (195) [2022-01-10 07:50:53,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6822 states to 6822 states and 9541 transitions. [2022-01-10 07:50:53,083 INFO L78 Accepts]: Start accepts. Automaton has 6822 states and 9541 transitions. Word has length 182 [2022-01-10 07:50:53,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:53,084 INFO L470 AbstractCegarLoop]: Abstraction has 6822 states and 9541 transitions. [2022-01-10 07:50:53,084 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.75) internal successors, (123), 4 states have internal predecessors, (123), 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 07:50:53,084 INFO L276 IsEmpty]: Start isEmpty. Operand 6822 states and 9541 transitions. [2022-01-10 07:50:53,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-01-10 07:50:53,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:53,090 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:53,103 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 07:50:53,301 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 07:50:53,301 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1533196906, now seen corresponding path program 1 times [2022-01-10 07:50:53,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:53,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1647249327] [2022-01-10 07:50:53,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:53,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:53,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:53,303 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 07:50:53,305 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 07:50:53,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:53,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:53,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:53,666 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 07:50:53,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:53,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:53,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1647249327] [2022-01-10 07:50:53,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1647249327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:53,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:53,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:53,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522567079] [2022-01-10 07:50:53,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:53,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:53,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:53,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:53,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:53,668 INFO L87 Difference]: Start difference. First operand 6822 states and 9541 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:50:53,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:53,926 INFO L93 Difference]: Finished difference Result 11498 states and 15082 transitions. [2022-01-10 07:50:53,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:53,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 182 [2022-01-10 07:50:53,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:53,937 INFO L225 Difference]: With dead ends: 11498 [2022-01-10 07:50:53,937 INFO L226 Difference]: Without dead ends: 6813 [2022-01-10 07:50:53,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 180 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 07:50:53,947 INFO L933 BasicCegarLoop]: 4265 mSDtfsCounter, 300 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 8223 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 07:50:53,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [300 Valid, 8223 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:53,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6813 states. [2022-01-10 07:50:54,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6813 to 6813. [2022-01-10 07:50:54,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6813 states, 6487 states have (on average 1.4126714968398335) internal successors, (9164), 6501 states have internal predecessors, (9164), 168 states have call successors, (168), 144 states have call predecessors, (168), 156 states have return successors, (192), 168 states have call predecessors, (192), 168 states have call successors, (192) [2022-01-10 07:50:54,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6813 states to 6813 states and 9524 transitions. [2022-01-10 07:50:54,322 INFO L78 Accepts]: Start accepts. Automaton has 6813 states and 9524 transitions. Word has length 182 [2022-01-10 07:50:54,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:54,322 INFO L470 AbstractCegarLoop]: Abstraction has 6813 states and 9524 transitions. [2022-01-10 07:50:54,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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 07:50:54,322 INFO L276 IsEmpty]: Start isEmpty. Operand 6813 states and 9524 transitions. [2022-01-10 07:50:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 07:50:54,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:54,328 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:54,339 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 07:50:54,538 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 07:50:54,538 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:54,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:54,538 INFO L85 PathProgramCache]: Analyzing trace with hash 1739457933, now seen corresponding path program 1 times [2022-01-10 07:50:54,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:54,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968255546] [2022-01-10 07:50:54,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:54,539 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:54,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:54,540 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 07:50:54,540 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 07:50:54,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:54,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:54,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:55,011 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:55,011 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:55,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:55,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968255546] [2022-01-10 07:50:55,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1968255546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:55,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:55,012 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:55,012 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492598402] [2022-01-10 07:50:55,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:55,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:55,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:55,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:55,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:55,013 INFO L87 Difference]: Start difference. First operand 6813 states and 9524 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 07:50:55,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:55,611 INFO L93 Difference]: Finished difference Result 15761 states and 20136 transitions. [2022-01-10 07:50:55,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:55,615 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 183 [2022-01-10 07:50:55,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:55,635 INFO L225 Difference]: With dead ends: 15761 [2022-01-10 07:50:55,636 INFO L226 Difference]: Without dead ends: 11085 [2022-01-10 07:50:55,647 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 181 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 07:50:55,647 INFO L933 BasicCegarLoop]: 4372 mSDtfsCounter, 4332 mSDsluCounter, 4441 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4338 SdHoareTripleChecker+Valid, 8813 SdHoareTripleChecker+Invalid, 189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:55,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4338 Valid, 8813 Invalid, 189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:55,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11085 states. [2022-01-10 07:50:56,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11085 to 11083. [2022-01-10 07:50:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11083 states, 10458 states have (on average 1.3256836871294702) internal successors, (13864), 10489 states have internal predecessors, (13864), 319 states have call successors, (319), 272 states have call predecessors, (319), 304 states have return successors, (387), 323 states have call predecessors, (387), 319 states have call successors, (387) [2022-01-10 07:50:56,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11083 states to 11083 states and 14570 transitions. [2022-01-10 07:50:56,358 INFO L78 Accepts]: Start accepts. Automaton has 11083 states and 14570 transitions. Word has length 183 [2022-01-10 07:50:56,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:56,358 INFO L470 AbstractCegarLoop]: Abstraction has 11083 states and 14570 transitions. [2022-01-10 07:50:56,358 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 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 07:50:56,358 INFO L276 IsEmpty]: Start isEmpty. Operand 11083 states and 14570 transitions. [2022-01-10 07:50:56,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-01-10 07:50:56,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:56,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:56,375 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 07:50:56,575 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 07:50:56,575 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:56,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:56,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2028115313, now seen corresponding path program 1 times [2022-01-10 07:50:56,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:56,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1189845415] [2022-01-10 07:50:56,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:56,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:56,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:56,577 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 07:50:56,579 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 07:50:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:56,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:56,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:56,942 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 07:50:56,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:56,942 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:56,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1189845415] [2022-01-10 07:50:56,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1189845415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:56,942 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:56,943 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:56,943 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669426333] [2022-01-10 07:50:56,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:56,943 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:56,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:56,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:56,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:56,944 INFO L87 Difference]: Start difference. First operand 11083 states and 14570 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:50:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:57,437 INFO L93 Difference]: Finished difference Result 20021 states and 25143 transitions. [2022-01-10 07:50:57,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:57,438 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 183 [2022-01-10 07:50:57,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:57,454 INFO L225 Difference]: With dead ends: 20021 [2022-01-10 07:50:57,454 INFO L226 Difference]: Without dead ends: 11075 [2022-01-10 07:50:57,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 181 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 07:50:57,471 INFO L933 BasicCegarLoop]: 4264 mSDtfsCounter, 298 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 298 SdHoareTripleChecker+Valid, 8222 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 07:50:57,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [298 Valid, 8222 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:57,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11075 states. [2022-01-10 07:50:58,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11075 to 11075. [2022-01-10 07:50:58,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11075 states, 10453 states have (on average 1.3254568066583756) internal successors, (13855), 10483 states have internal predecessors, (13855), 316 states have call successors, (316), 272 states have call predecessors, (316), 304 states have return successors, (384), 320 states have call predecessors, (384), 316 states have call successors, (384) [2022-01-10 07:50:58,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11075 states to 11075 states and 14555 transitions. [2022-01-10 07:50:58,155 INFO L78 Accepts]: Start accepts. Automaton has 11075 states and 14555 transitions. Word has length 183 [2022-01-10 07:50:58,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:58,155 INFO L470 AbstractCegarLoop]: Abstraction has 11075 states and 14555 transitions. [2022-01-10 07:50:58,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 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 07:50:58,156 INFO L276 IsEmpty]: Start isEmpty. Operand 11075 states and 14555 transitions. [2022-01-10 07:50:58,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 07:50:58,161 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:58,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:50:58,172 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 07:50:58,372 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 07:50:58,372 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:58,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1851090616, now seen corresponding path program 1 times [2022-01-10 07:50:58,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:58,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [842489195] [2022-01-10 07:50:58,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:58,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:58,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:58,374 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 07:50:58,375 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 07:50:58,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:58,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:58,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:58,791 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:58,791 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:58,791 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:58,791 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [842489195] [2022-01-10 07:50:58,791 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [842489195] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:58,791 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:58,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:58,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058700835] [2022-01-10 07:50:58,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:58,792 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:58,792 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:58,793 INFO L87 Difference]: Start difference. First operand 11075 states and 14555 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 07:50:59,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:59,876 INFO L93 Difference]: Finished difference Result 28146 states and 34761 transitions. [2022-01-10 07:50:59,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:59,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 184 [2022-01-10 07:50:59,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:59,910 INFO L225 Difference]: With dead ends: 28146 [2022-01-10 07:50:59,911 INFO L226 Difference]: Without dead ends: 19208 [2022-01-10 07:50:59,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 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 07:50:59,924 INFO L933 BasicCegarLoop]: 4361 mSDtfsCounter, 4325 mSDsluCounter, 4418 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4331 SdHoareTripleChecker+Valid, 8779 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:59,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4331 Valid, 8779 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:59,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19208 states. [2022-01-10 07:51:01,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19208 to 19206. [2022-01-10 07:51:01,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19206 states, 18013 states have (on average 1.2653639038472215) internal successors, (22793), 18080 states have internal predecessors, (22793), 599 states have call successors, (599), 512 states have call predecessors, (599), 592 states have return successors, (763), 615 states have call predecessors, (763), 599 states have call successors, (763) [2022-01-10 07:51:01,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19206 states to 19206 states and 24155 transitions. [2022-01-10 07:51:01,040 INFO L78 Accepts]: Start accepts. Automaton has 19206 states and 24155 transitions. Word has length 184 [2022-01-10 07:51:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:01,041 INFO L470 AbstractCegarLoop]: Abstraction has 19206 states and 24155 transitions. [2022-01-10 07:51:01,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 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 07:51:01,041 INFO L276 IsEmpty]: Start isEmpty. Operand 19206 states and 24155 transitions. [2022-01-10 07:51:01,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 07:51:01,050 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:01,050 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:01,060 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 07:51:01,260 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 07:51:01,260 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:01,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:01,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1916482630, now seen corresponding path program 1 times [2022-01-10 07:51:01,261 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:01,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1075194080] [2022-01-10 07:51:01,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:01,261 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:01,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:01,262 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 07:51:01,263 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 07:51:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:01,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:01,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 07:51:01,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:01,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:01,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1075194080] [2022-01-10 07:51:01,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1075194080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:01,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:01,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:51:01,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547410131] [2022-01-10 07:51:01,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:01,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:01,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:01,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:01,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:01,560 INFO L87 Difference]: Start difference. First operand 19206 states and 24155 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 07:51:02,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:02,485 INFO L93 Difference]: Finished difference Result 36268 states and 44316 transitions. [2022-01-10 07:51:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:02,485 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 184 [2022-01-10 07:51:02,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:02,521 INFO L225 Difference]: With dead ends: 36268 [2022-01-10 07:51:02,521 INFO L226 Difference]: Without dead ends: 19199 [2022-01-10 07:51:02,543 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 182 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 07:51:02,544 INFO L933 BasicCegarLoop]: 4263 mSDtfsCounter, 296 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 8221 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 07:51:02,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 8221 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:02,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19199 states. [2022-01-10 07:51:03,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19199 to 19199. [2022-01-10 07:51:03,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19199 states, 18009 states have (on average 1.2652562607585096) internal successors, (22786), 18075 states have internal predecessors, (22786), 596 states have call successors, (596), 512 states have call predecessors, (596), 592 states have return successors, (760), 612 states have call predecessors, (760), 596 states have call successors, (760) [2022-01-10 07:51:03,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19199 states to 19199 states and 24142 transitions. [2022-01-10 07:51:03,566 INFO L78 Accepts]: Start accepts. Automaton has 19199 states and 24142 transitions. Word has length 184 [2022-01-10 07:51:03,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:03,566 INFO L470 AbstractCegarLoop]: Abstraction has 19199 states and 24142 transitions. [2022-01-10 07:51:03,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 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 07:51:03,566 INFO L276 IsEmpty]: Start isEmpty. Operand 19199 states and 24142 transitions. [2022-01-10 07:51:03,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 07:51:03,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:03,573 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:03,580 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:03,773 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 07:51:03,774 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:03,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:03,774 INFO L85 PathProgramCache]: Analyzing trace with hash 129782633, now seen corresponding path program 1 times [2022-01-10 07:51:03,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:03,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [272867023] [2022-01-10 07:51:03,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:03,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:03,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:03,776 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 07:51:03,776 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 07:51:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:03,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:51:03,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:04,192 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:51:04,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:04,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:04,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [272867023] [2022-01-10 07:51:04,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [272867023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:04,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:04,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:04,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218189272] [2022-01-10 07:51:04,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:04,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:51:04,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:04,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:51:04,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:51:04,194 INFO L87 Difference]: Start difference. First operand 19199 states and 24142 transitions. Second operand has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 07:51:06,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:06,447 INFO L93 Difference]: Finished difference Result 55769 states and 67155 transitions. [2022-01-10 07:51:06,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:51:06,447 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 185 [2022-01-10 07:51:06,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:06,538 INFO L225 Difference]: With dead ends: 55769 [2022-01-10 07:51:06,539 INFO L226 Difference]: Without dead ends: 38707 [2022-01-10 07:51:06,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 183 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 07:51:06,575 INFO L933 BasicCegarLoop]: 4363 mSDtfsCounter, 4329 mSDsluCounter, 4400 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 8763 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:06,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4335 Valid, 8763 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:51:06,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38707 states. [2022-01-10 07:51:08,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38707 to 37937. [2022-01-10 07:51:08,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37937 states, 35304 states have (on average 1.2195218672105144) internal successors, (43054), 35643 states have internal predecessors, (43054), 1127 states have call successors, (1127), 960 states have call predecessors, (1127), 1504 states have return successors, (1868), 1335 states have call predecessors, (1868), 1127 states have call successors, (1868) [2022-01-10 07:51:08,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37937 states to 37937 states and 46049 transitions. [2022-01-10 07:51:08,822 INFO L78 Accepts]: Start accepts. Automaton has 37937 states and 46049 transitions. Word has length 185 [2022-01-10 07:51:08,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:08,822 INFO L470 AbstractCegarLoop]: Abstraction has 37937 states and 46049 transitions. [2022-01-10 07:51:08,823 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.5) internal successors, (126), 4 states have internal predecessors, (126), 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 07:51:08,823 INFO L276 IsEmpty]: Start isEmpty. Operand 37937 states and 46049 transitions. [2022-01-10 07:51:09,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2022-01-10 07:51:09,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:09,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:09,009 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 07:51:09,202 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 07:51:09,202 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:09,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:09,203 INFO L85 PathProgramCache]: Analyzing trace with hash 657176683, now seen corresponding path program 1 times [2022-01-10 07:51:09,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:09,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1612587367] [2022-01-10 07:51:09,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:09,203 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:09,203 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:09,204 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 07:51:09,205 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 07:51:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:09,312 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:09,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:09,520 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 07:51:09,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:09,520 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:09,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1612587367] [2022-01-10 07:51:09,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1612587367] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:09,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:09,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:51:09,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293630219] [2022-01-10 07:51:09,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:09,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:09,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:09,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:09,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:09,522 INFO L87 Difference]: Start difference. First operand 37937 states and 46049 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 07:51:11,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:11,881 INFO L93 Difference]: Finished difference Result 73732 states and 88108 transitions. [2022-01-10 07:51:11,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:11,882 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 185 [2022-01-10 07:51:11,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:11,970 INFO L225 Difference]: With dead ends: 73732 [2022-01-10 07:51:11,970 INFO L226 Difference]: Without dead ends: 37931 [2022-01-10 07:51:12,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 183 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 07:51:12,021 INFO L933 BasicCegarLoop]: 4262 mSDtfsCounter, 294 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 8220 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 07:51:12,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [294 Valid, 8220 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:12,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37931 states. [2022-01-10 07:51:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37931 to 37931. [2022-01-10 07:51:14,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37931 states, 35301 states have (on average 1.2194838673125408) internal successors, (43049), 35639 states have internal predecessors, (43049), 1124 states have call successors, (1124), 960 states have call predecessors, (1124), 1504 states have return successors, (1864), 1332 states have call predecessors, (1864), 1124 states have call successors, (1864) [2022-01-10 07:51:14,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37931 states to 37931 states and 46037 transitions. [2022-01-10 07:51:14,136 INFO L78 Accepts]: Start accepts. Automaton has 37931 states and 46037 transitions. Word has length 185 [2022-01-10 07:51:14,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:14,136 INFO L470 AbstractCegarLoop]: Abstraction has 37931 states and 46037 transitions. [2022-01-10 07:51:14,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 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 07:51:14,136 INFO L276 IsEmpty]: Start isEmpty. Operand 37931 states and 46037 transitions. [2022-01-10 07:51:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2022-01-10 07:51:14,148 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:14,148 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:51:14,156 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 07:51:14,349 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 07:51:14,349 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:14,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:14,350 INFO L85 PathProgramCache]: Analyzing trace with hash 1328272604, now seen corresponding path program 1 times [2022-01-10 07:51:14,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:14,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1993811823] [2022-01-10 07:51:14,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:14,350 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:14,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:14,352 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 07:51:14,354 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 07:51:14,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:14,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:51:14,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:51:14,733 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:14,733 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:14,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1993811823] [2022-01-10 07:51:14,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1993811823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:14,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:14,734 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:51:14,734 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144954033] [2022-01-10 07:51:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:14,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:51:14,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:51:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:51:14,735 INFO L87 Difference]: Start difference. First operand 37931 states and 46037 transitions. Second operand has 4 states, 4 states have (on average 31.75) internal successors, (127), 4 states have internal predecessors, (127), 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)