/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/systemc/pc_sfifo_3.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:41:38,159 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:41:38,160 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:41:38,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:41:38,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:41:38,188 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:41:38,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:41:38,196 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:41:38,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:41:38,203 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:41:38,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:41:38,204 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:41:38,204 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:41:38,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:41:38,207 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:41:38,208 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:41:38,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:41:38,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:41:38,212 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:41:38,215 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:41:38,215 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:41:38,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:41:38,218 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:41:38,218 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:41:38,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:41:38,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:41:38,220 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:41:38,220 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:41:38,221 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:41:38,221 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:41:38,221 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:41:38,222 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:41:38,222 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:41:38,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:41:38,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:41:38,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:41:38,224 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:41:38,224 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:41:38,224 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:41:38,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:41:38,225 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:41:38,229 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 06:41:38,279 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:41:38,279 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:41:38,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:41:38,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:41:38,280 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:41:38,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:41:38,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:41:38,280 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:41:38,281 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:41:38,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:41:38,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:41:38,282 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:41:38,282 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:41:38,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:41:38,472 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:41:38,474 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:41:38,475 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:41:38,475 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:41:38,476 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2022-01-10 06:41:38,518 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f23a2ec/f2c8ae794c044847bc632b8722789ae9/FLAGa6a2e387f [2022-01-10 06:41:38,861 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:41:38,862 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c [2022-01-10 06:41:38,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f23a2ec/f2c8ae794c044847bc632b8722789ae9/FLAGa6a2e387f [2022-01-10 06:41:39,279 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/25f23a2ec/f2c8ae794c044847bc632b8722789ae9 [2022-01-10 06:41:39,280 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:41:39,281 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:41:39,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:41:39,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:41:39,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:41:39,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,291 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65c20a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39, skipping insertion in model container [2022-01-10 06:41:39,294 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:41:39,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:41:39,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[640,653] [2022-01-10 06:41:39,478 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:41:39,510 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:41:39,523 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/pc_sfifo_3.cil.c[640,653] [2022-01-10 06:41:39,567 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:41:39,577 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:41:39,577 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39 WrapperNode [2022-01-10 06:41:39,578 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:41:39,578 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:41:39,578 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:41:39,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:41:39,590 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,604 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,625 INFO L137 Inliner]: procedures = 31, calls = 35, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 218 [2022-01-10 06:41:39,625 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:41:39,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:41:39,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:41:39,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:41:39,632 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,640 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,640 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,644 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:41:39,651 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:41:39,651 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:41:39,651 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:41:39,652 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (1/1) ... [2022-01-10 06:41:39,659 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:41:39,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:41:39,691 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 06:41:39,723 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 06:41:39,733 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:41:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:41:39,734 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 06:41:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 06:41:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 06:41:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 06:41:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:41:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:41:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:41:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:41:39,735 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:41:39,735 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:41:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:41:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:41:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:41:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:41:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:41:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:41:39,736 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 06:41:39,736 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 06:41:39,794 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:41:39,795 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:41:40,021 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(1bv32 == ~q_free~0); [2022-01-10 06:41:40,022 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 06:41:40,055 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:41:40,060 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:41:40,060 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-01-10 06:41:40,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:41:40 BoogieIcfgContainer [2022-01-10 06:41:40,062 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:41:40,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:41:40,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:41:40,069 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:41:40,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:41:39" (1/3) ... [2022-01-10 06:41:40,070 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3ec32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:41:40, skipping insertion in model container [2022-01-10 06:41:40,070 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:41:39" (2/3) ... [2022-01-10 06:41:40,071 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69e3ec32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:41:40, skipping insertion in model container [2022-01-10 06:41:40,071 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:41:40" (3/3) ... [2022-01-10 06:41:40,072 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil.c [2022-01-10 06:41:40,075 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:41:40,075 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:41:40,117 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:41:40,122 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 06:41:40,122 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:41:40,142 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 97 states have internal predecessors, (142), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) [2022-01-10 06:41:40,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:41:40,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:40,149 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] [2022-01-10 06:41:40,150 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:40,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:40,155 INFO L85 PathProgramCache]: Analyzing trace with hash 1330697302, now seen corresponding path program 1 times [2022-01-10 06:41:40,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:40,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1816326328] [2022-01-10 06:41:40,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:40,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:40,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:40,206 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 06:41:40,208 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 06:41:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:40,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 06:41:40,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:40,477 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 06:41:40,477 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:40,478 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:40,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1816326328] [2022-01-10 06:41:40,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1816326328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:40,478 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:40,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:41:40,480 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657599832] [2022-01-10 06:41:40,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:40,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:41:40,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:40,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:41:40,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:41:40,513 INFO L87 Difference]: Start difference. First operand has 119 states, 93 states have (on average 1.5268817204301075) internal successors, (142), 97 states have internal predecessors, (142), 16 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (16), 15 states have call predecessors, (16), 16 states have call successors, (16) Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:40,758 INFO L93 Difference]: Finished difference Result 350 states and 526 transitions. [2022-01-10 06:41:40,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:41:40,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-01-10 06:41:40,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:40,775 INFO L225 Difference]: With dead ends: 350 [2022-01-10 06:41:40,776 INFO L226 Difference]: Without dead ends: 232 [2022-01-10 06:41:40,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 06:41:40,785 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 248 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:40,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [256 Valid, 456 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:40,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2022-01-10 06:41:40,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 225. [2022-01-10 06:41:40,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 179 states have (on average 1.4245810055865922) internal successors, (255), 183 states have internal predecessors, (255), 29 states have call successors, (29), 15 states have call predecessors, (29), 16 states have return successors, (32), 28 states have call predecessors, (32), 27 states have call successors, (32) [2022-01-10 06:41:40,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 316 transitions. [2022-01-10 06:41:40,842 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 316 transitions. Word has length 64 [2022-01-10 06:41:40,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:40,842 INFO L470 AbstractCegarLoop]: Abstraction has 225 states and 316 transitions. [2022-01-10 06:41:40,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:40,842 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 316 transitions. [2022-01-10 06:41:40,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:41:40,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:40,845 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] [2022-01-10 06:41:40,854 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:41,051 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 06:41:41,052 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:41,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:41,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1285381354, now seen corresponding path program 1 times [2022-01-10 06:41:41,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:41,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [785296207] [2022-01-10 06:41:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:41,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:41,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:41,055 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 06:41:41,075 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 06:41:41,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:41,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:41:41,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:41,229 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 06:41:41,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:41,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:41,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [785296207] [2022-01-10 06:41:41,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [785296207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:41,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:41,230 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:41:41,230 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065509395] [2022-01-10 06:41:41,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:41,232 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:41:41,232 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:41,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:41:41,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:41:41,232 INFO L87 Difference]: Start difference. First operand 225 states and 316 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:41,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:41,442 INFO L93 Difference]: Finished difference Result 681 states and 976 transitions. [2022-01-10 06:41:41,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:41:41,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-01-10 06:41:41,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:41,445 INFO L225 Difference]: With dead ends: 681 [2022-01-10 06:41:41,445 INFO L226 Difference]: Without dead ends: 470 [2022-01-10 06:41:41,446 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 60 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 06:41:41,447 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 236 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:41,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 445 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:41,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2022-01-10 06:41:41,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 462. [2022-01-10 06:41:41,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 368 states have (on average 1.3994565217391304) internal successors, (515), 380 states have internal predecessors, (515), 55 states have call successors, (55), 29 states have call predecessors, (55), 38 states have return successors, (78), 56 states have call predecessors, (78), 53 states have call successors, (78) [2022-01-10 06:41:41,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 648 transitions. [2022-01-10 06:41:41,473 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 648 transitions. Word has length 64 [2022-01-10 06:41:41,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:41,473 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 648 transitions. [2022-01-10 06:41:41,473 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:41,473 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 648 transitions. [2022-01-10 06:41:41,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-01-10 06:41:41,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:41,476 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] [2022-01-10 06:41:41,484 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 06:41:41,681 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 06:41:41,682 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:41,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:41,683 INFO L85 PathProgramCache]: Analyzing trace with hash 846986326, now seen corresponding path program 1 times [2022-01-10 06:41:41,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:41,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1161082166] [2022-01-10 06:41:41,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:41,683 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:41,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:41,685 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 06:41:41,687 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 06:41:41,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:41,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:41,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:41,855 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 06:41:41,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:41,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:41,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1161082166] [2022-01-10 06:41:41,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1161082166] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:41,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:41,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:41,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781076738] [2022-01-10 06:41:41,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:41,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:41,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:41,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:41,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:41,857 INFO L87 Difference]: Start difference. First operand 462 states and 648 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:41,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:41,920 INFO L93 Difference]: Finished difference Result 1298 states and 1805 transitions. [2022-01-10 06:41:41,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:41,921 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-01-10 06:41:41,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:41,925 INFO L225 Difference]: With dead ends: 1298 [2022-01-10 06:41:41,925 INFO L226 Difference]: Without dead ends: 864 [2022-01-10 06:41:41,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 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 06:41:41,928 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 122 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 318 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:41,928 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 318 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:41,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 864 states. [2022-01-10 06:41:41,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 864 to 852. [2022-01-10 06:41:41,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 680 states have (on average 1.3764705882352941) internal successors, (936), 702 states have internal predecessors, (936), 95 states have call successors, (95), 57 states have call predecessors, (95), 76 states have return successors, (135), 96 states have call predecessors, (135), 93 states have call successors, (135) [2022-01-10 06:41:41,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1166 transitions. [2022-01-10 06:41:41,964 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1166 transitions. Word has length 64 [2022-01-10 06:41:41,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:41,964 INFO L470 AbstractCegarLoop]: Abstraction has 852 states and 1166 transitions. [2022-01-10 06:41:41,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:41,964 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1166 transitions. [2022-01-10 06:41:41,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:41:41,966 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:41,966 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] [2022-01-10 06:41:41,983 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 06:41:42,172 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 06:41:42,173 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:42,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:42,173 INFO L85 PathProgramCache]: Analyzing trace with hash 645818346, now seen corresponding path program 1 times [2022-01-10 06:41:42,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:42,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153199383] [2022-01-10 06:41:42,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:42,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:42,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:42,175 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 06:41:42,188 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 06:41:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:42,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:41:42,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:42,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:41:42,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:42,322 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:42,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153199383] [2022-01-10 06:41:42,322 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153199383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:42,322 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:42,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:41:42,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302168224] [2022-01-10 06:41:42,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:42,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:41:42,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:42,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:41:42,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:41:42,323 INFO L87 Difference]: Start difference. First operand 852 states and 1166 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:42,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:42,361 INFO L93 Difference]: Finished difference Result 1716 states and 2360 transitions. [2022-01-10 06:41:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:41:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 06:41:42,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:42,365 INFO L225 Difference]: With dead ends: 1716 [2022-01-10 06:41:42,365 INFO L226 Difference]: Without dead ends: 892 [2022-01-10 06:41:42,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:41:42,367 INFO L933 BasicCegarLoop]: 158 mSDtfsCounter, 7 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:42,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 783 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 892 states. [2022-01-10 06:41:42,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 892 to 872. [2022-01-10 06:41:42,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 696 states have (on average 1.3620689655172413) internal successors, (948), 718 states have internal predecessors, (948), 95 states have call successors, (95), 57 states have call predecessors, (95), 80 states have return successors, (139), 100 states have call predecessors, (139), 93 states have call successors, (139) [2022-01-10 06:41:42,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1182 transitions. [2022-01-10 06:41:42,404 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1182 transitions. Word has length 65 [2022-01-10 06:41:42,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:42,404 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1182 transitions. [2022-01-10 06:41:42,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:42,404 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1182 transitions. [2022-01-10 06:41:42,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 06:41:42,405 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:42,405 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] [2022-01-10 06:41:42,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 06:41:42,612 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 06:41:42,612 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:42,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:42,613 INFO L85 PathProgramCache]: Analyzing trace with hash -383540952, now seen corresponding path program 1 times [2022-01-10 06:41:42,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:42,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1278188947] [2022-01-10 06:41:42,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:42,613 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:42,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:42,614 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 06:41:42,616 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 06:41:42,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:42,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:42,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:42,741 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 06:41:42,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:42,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:42,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1278188947] [2022-01-10 06:41:42,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1278188947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:42,742 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:42,742 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:42,742 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569090938] [2022-01-10 06:41:42,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:42,742 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:42,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:42,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:42,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:42,743 INFO L87 Difference]: Start difference. First operand 872 states and 1182 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:42,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:42,785 INFO L93 Difference]: Finished difference Result 2488 states and 3362 transitions. [2022-01-10 06:41:42,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:42,786 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 06:41:42,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:42,791 INFO L225 Difference]: With dead ends: 2488 [2022-01-10 06:41:42,791 INFO L226 Difference]: Without dead ends: 1644 [2022-01-10 06:41:42,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 06:41:42,793 INFO L933 BasicCegarLoop]: 165 mSDtfsCounter, 108 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:42,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 297 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:42,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1644 states. [2022-01-10 06:41:42,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1644 to 1628. [2022-01-10 06:41:42,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1628 states, 1292 states have (on average 1.3374613003095974) internal successors, (1728), 1334 states have internal predecessors, (1728), 175 states have call successors, (175), 113 states have call predecessors, (175), 160 states have return successors, (257), 184 states have call predecessors, (257), 173 states have call successors, (257) [2022-01-10 06:41:42,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1628 states to 1628 states and 2160 transitions. [2022-01-10 06:41:42,837 INFO L78 Accepts]: Start accepts. Automaton has 1628 states and 2160 transitions. Word has length 65 [2022-01-10 06:41:42,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:42,838 INFO L470 AbstractCegarLoop]: Abstraction has 1628 states and 2160 transitions. [2022-01-10 06:41:42,838 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:42,838 INFO L276 IsEmpty]: Start isEmpty. Operand 1628 states and 2160 transitions. [2022-01-10 06:41:42,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 06:41:42,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:42,840 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:42,846 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 06:41:43,046 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 06:41:43,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:43,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:43,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2094040389, now seen corresponding path program 1 times [2022-01-10 06:41:43,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:43,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1849974037] [2022-01-10 06:41:43,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:43,047 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:43,047 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:43,049 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 06:41:43,050 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 06:41:43,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:43,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:41:43,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:43,203 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 06:41:43,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:43,204 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:43,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1849974037] [2022-01-10 06:41:43,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1849974037] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:43,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:43,204 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:41:43,204 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780813236] [2022-01-10 06:41:43,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:43,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:41:43,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:43,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:41:43,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:41:43,205 INFO L87 Difference]: Start difference. First operand 1628 states and 2160 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:43,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:43,254 INFO L93 Difference]: Finished difference Result 3284 states and 4380 transitions. [2022-01-10 06:41:43,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:41:43,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 82 [2022-01-10 06:41:43,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:43,259 INFO L225 Difference]: With dead ends: 3284 [2022-01-10 06:41:43,260 INFO L226 Difference]: Without dead ends: 1684 [2022-01-10 06:41:43,262 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:41:43,262 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 4 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:43,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 769 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:43,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1684 states. [2022-01-10 06:41:43,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1684 to 1668. [2022-01-10 06:41:43,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1324 states have (on average 1.3232628398791542) internal successors, (1752), 1366 states have internal predecessors, (1752), 175 states have call successors, (175), 113 states have call predecessors, (175), 168 states have return successors, (265), 192 states have call predecessors, (265), 173 states have call successors, (265) [2022-01-10 06:41:43,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 2192 transitions. [2022-01-10 06:41:43,304 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 2192 transitions. Word has length 82 [2022-01-10 06:41:43,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:43,304 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 2192 transitions. [2022-01-10 06:41:43,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:41:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 2192 transitions. [2022-01-10 06:41:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-01-10 06:41:43,306 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:43,306 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:43,315 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 06:41:43,513 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 06:41:43,513 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:43,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:43,514 INFO L85 PathProgramCache]: Analyzing trace with hash -1307440569, now seen corresponding path program 1 times [2022-01-10 06:41:43,514 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:43,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1625432826] [2022-01-10 06:41:43,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:43,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:43,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:43,515 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 06:41:43,516 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 06:41:43,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:43,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:41:43,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:43,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 06:41:43,709 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:43,709 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1625432826] [2022-01-10 06:41:43,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1625432826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:43,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:43,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:41:43,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953856214] [2022-01-10 06:41:43,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:43,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:41:43,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:43,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:41:43,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:41:43,711 INFO L87 Difference]: Start difference. First operand 1668 states and 2192 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:41:43,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:43,919 INFO L93 Difference]: Finished difference Result 4904 states and 6495 transitions. [2022-01-10 06:41:43,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:41:43,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 82 [2022-01-10 06:41:43,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:43,960 INFO L225 Difference]: With dead ends: 4904 [2022-01-10 06:41:43,960 INFO L226 Difference]: Without dead ends: 3268 [2022-01-10 06:41:43,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 80 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 06:41:43,965 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 209 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:43,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 299 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:41:43,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3268 states. [2022-01-10 06:41:44,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3268 to 3264. [2022-01-10 06:41:44,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3264 states, 2564 states have (on average 1.296411856474259) internal successors, (3324), 2654 states have internal predecessors, (3324), 355 states have call successors, (355), 225 states have call predecessors, (355), 344 states have return successors, (602), 392 states have call predecessors, (602), 353 states have call successors, (602) [2022-01-10 06:41:44,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3264 states to 3264 states and 4281 transitions. [2022-01-10 06:41:44,076 INFO L78 Accepts]: Start accepts. Automaton has 3264 states and 4281 transitions. Word has length 82 [2022-01-10 06:41:44,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:44,077 INFO L470 AbstractCegarLoop]: Abstraction has 3264 states and 4281 transitions. [2022-01-10 06:41:44,077 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:41:44,077 INFO L276 IsEmpty]: Start isEmpty. Operand 3264 states and 4281 transitions. [2022-01-10 06:41:44,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 06:41:44,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:44,080 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 06:41:44,087 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 06:41:44,287 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 06:41:44,288 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:44,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1656413051, now seen corresponding path program 1 times [2022-01-10 06:41:44,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:44,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563345736] [2022-01-10 06:41:44,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:44,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:44,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:44,290 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 06:41:44,292 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 06:41:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:44,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:44,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:41:44,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:44,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563345736] [2022-01-10 06:41:44,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563345736] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:44,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:44,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:44,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055935377] [2022-01-10 06:41:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:44,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:44,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:44,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:44,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:44,456 INFO L87 Difference]: Start difference. First operand 3264 states and 4281 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:41:44,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:44,615 INFO L93 Difference]: Finished difference Result 9524 states and 12502 transitions. [2022-01-10 06:41:44,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:44,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-01-10 06:41:44,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:44,632 INFO L225 Difference]: With dead ends: 9524 [2022-01-10 06:41:44,632 INFO L226 Difference]: Without dead ends: 4832 [2022-01-10 06:41:44,640 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 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 06:41:44,641 INFO L933 BasicCegarLoop]: 275 mSDtfsCounter, 116 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 424 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:44,641 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 424 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4832 states. [2022-01-10 06:41:44,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4832 to 4832. [2022-01-10 06:41:44,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 3788 states have (on average 1.2882787750791975) internal successors, (4880), 3918 states have internal predecessors, (4880), 519 states have call successors, (519), 337 states have call predecessors, (519), 524 states have return successors, (934), 584 states have call predecessors, (934), 517 states have call successors, (934) [2022-01-10 06:41:44,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 6333 transitions. [2022-01-10 06:41:44,766 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 6333 transitions. Word has length 84 [2022-01-10 06:41:44,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:44,767 INFO L470 AbstractCegarLoop]: Abstraction has 4832 states and 6333 transitions. [2022-01-10 06:41:44,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:41:44,767 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 6333 transitions. [2022-01-10 06:41:44,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-01-10 06:41:44,777 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:44,777 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:41:44,801 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 06:41:44,985 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 06:41:44,985 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:44,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash -912784554, now seen corresponding path program 1 times [2022-01-10 06:41:44,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:44,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1889699791] [2022-01-10 06:41:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:44,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:44,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:45,011 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 06:41:45,012 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 06:41:45,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:45,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:41:45,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:45,268 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 06:41:45,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:45,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:45,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1889699791] [2022-01-10 06:41:45,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1889699791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:45,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:45,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:41:45,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555970129] [2022-01-10 06:41:45,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:45,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:41:45,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:45,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:41:45,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:41:45,271 INFO L87 Difference]: Start difference. First operand 4832 states and 6333 transitions. Second operand has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:41:45,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:45,408 INFO L93 Difference]: Finished difference Result 9678 states and 12777 transitions. [2022-01-10 06:41:45,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:41:45,409 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 154 [2022-01-10 06:41:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:45,428 INFO L225 Difference]: With dead ends: 9678 [2022-01-10 06:41:45,429 INFO L226 Difference]: Without dead ends: 4898 [2022-01-10 06:41:45,438 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:41:45,440 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 37 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 776 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:45,440 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 776 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:45,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4898 states. [2022-01-10 06:41:45,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4898 to 4352. [2022-01-10 06:41:45,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4352 states, 3476 states have (on average 1.2756041426927502) internal successors, (4434), 3545 states have internal predecessors, (4434), 423 states have call successors, (423), 286 states have call predecessors, (423), 452 states have return successors, (791), 528 states have call predecessors, (791), 421 states have call successors, (791) [2022-01-10 06:41:45,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4352 states to 4352 states and 5648 transitions. [2022-01-10 06:41:45,557 INFO L78 Accepts]: Start accepts. Automaton has 4352 states and 5648 transitions. Word has length 154 [2022-01-10 06:41:45,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 4352 states and 5648 transitions. [2022-01-10 06:41:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.166666666666668) internal successors, (109), 5 states have internal predecessors, (109), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:41:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 4352 states and 5648 transitions. [2022-01-10 06:41:45,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 06:41:45,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:45,565 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:41:45,574 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 06:41:45,774 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 06:41:45,774 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:45,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:45,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1454986863, now seen corresponding path program 1 times [2022-01-10 06:41:45,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:45,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95411208] [2022-01-10 06:41:45,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:45,775 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:45,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:45,776 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 06:41:45,787 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 06:41:45,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:45,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:45,888 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:46,072 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 06:41:46,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:46,072 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:46,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95411208] [2022-01-10 06:41:46,072 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95411208] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:46,072 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:46,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:46,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466834090] [2022-01-10 06:41:46,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:46,073 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:46,073 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:46,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:46,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:46,074 INFO L87 Difference]: Start difference. First operand 4352 states and 5648 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:41:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:46,133 INFO L93 Difference]: Finished difference Result 6914 states and 8966 transitions. [2022-01-10 06:41:46,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 155 [2022-01-10 06:41:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:46,141 INFO L225 Difference]: With dead ends: 6914 [2022-01-10 06:41:46,141 INFO L226 Difference]: Without dead ends: 2658 [2022-01-10 06:41:46,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 153 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 06:41:46,148 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 148 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 155 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 06:41:46,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 155 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:46,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2022-01-10 06:41:46,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2658. [2022-01-10 06:41:46,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2658 states, 2124 states have (on average 1.277306967984934) internal successors, (2713), 2167 states have internal predecessors, (2713), 247 states have call successors, (247), 174 states have call predecessors, (247), 286 states have return successors, (471), 316 states have call predecessors, (471), 245 states have call successors, (471) [2022-01-10 06:41:46,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3431 transitions. [2022-01-10 06:41:46,215 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3431 transitions. Word has length 155 [2022-01-10 06:41:46,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:46,215 INFO L470 AbstractCegarLoop]: Abstraction has 2658 states and 3431 transitions. [2022-01-10 06:41:46,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:41:46,215 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3431 transitions. [2022-01-10 06:41:46,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2022-01-10 06:41:46,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:46,221 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 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] [2022-01-10 06:41:46,227 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 06:41:46,427 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 06:41:46,427 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:46,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:46,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1879917713, now seen corresponding path program 1 times [2022-01-10 06:41:46,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:46,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572179826] [2022-01-10 06:41:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:46,429 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:46,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:46,430 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 06:41:46,431 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 06:41:46,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:46,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:46,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:46,779 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:41:46,779 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:46,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:46,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572179826] [2022-01-10 06:41:46,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572179826] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:46,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:46,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:46,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619560832] [2022-01-10 06:41:46,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:46,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:46,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:46,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:46,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:46,781 INFO L87 Difference]: Start difference. First operand 2658 states and 3431 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:41:46,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:46,868 INFO L93 Difference]: Finished difference Result 6780 states and 8914 transitions. [2022-01-10 06:41:46,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:46,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 158 [2022-01-10 06:41:46,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:46,882 INFO L225 Difference]: With dead ends: 6780 [2022-01-10 06:41:46,882 INFO L226 Difference]: Without dead ends: 4442 [2022-01-10 06:41:46,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 156 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 06:41:46,887 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:46,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 317 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:46,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-01-10 06:41:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4414. [2022-01-10 06:41:46,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4414 states, 3542 states have (on average 1.282326369282891) internal successors, (4542), 3621 states have internal predecessors, (4542), 403 states have call successors, (403), 282 states have call predecessors, (403), 468 states have return successors, (780), 510 states have call predecessors, (780), 401 states have call successors, (780) [2022-01-10 06:41:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4414 states to 4414 states and 5725 transitions. [2022-01-10 06:41:46,995 INFO L78 Accepts]: Start accepts. Automaton has 4414 states and 5725 transitions. Word has length 158 [2022-01-10 06:41:46,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:46,995 INFO L470 AbstractCegarLoop]: Abstraction has 4414 states and 5725 transitions. [2022-01-10 06:41:46,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 06:41:46,995 INFO L276 IsEmpty]: Start isEmpty. Operand 4414 states and 5725 transitions. [2022-01-10 06:41:47,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 06:41:47,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:47,001 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:41:47,021 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:41:47,208 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 06:41:47,209 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:47,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -1173286255, now seen corresponding path program 1 times [2022-01-10 06:41:47,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:47,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1358564092] [2022-01-10 06:41:47,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:47,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:47,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:47,211 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 06:41:47,212 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 06:41:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:47,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:47,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:47,508 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 06:41:47,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:47,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:47,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1358564092] [2022-01-10 06:41:47,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1358564092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:47,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:47,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:47,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870246342] [2022-01-10 06:41:47,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:47,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:47,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:47,510 INFO L87 Difference]: Start difference. First operand 4414 states and 5725 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:41:47,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:47,697 INFO L93 Difference]: Finished difference Result 12146 states and 16282 transitions. [2022-01-10 06:41:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:47,698 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), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 159 [2022-01-10 06:41:47,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:47,722 INFO L225 Difference]: With dead ends: 12146 [2022-01-10 06:41:47,723 INFO L226 Difference]: Without dead ends: 8052 [2022-01-10 06:41:47,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 06:41:47,734 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 102 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:47,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 366 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8052 states. [2022-01-10 06:41:47,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8052 to 7976. [2022-01-10 06:41:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7976 states, 6404 states have (on average 1.2663960024984384) internal successors, (8110), 6533 states have internal predecessors, (8110), 739 states have call successors, (739), 516 states have call predecessors, (739), 832 states have return successors, (1578), 926 states have call predecessors, (1578), 737 states have call successors, (1578) [2022-01-10 06:41:47,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7976 states to 7976 states and 10427 transitions. [2022-01-10 06:41:47,987 INFO L78 Accepts]: Start accepts. Automaton has 7976 states and 10427 transitions. Word has length 159 [2022-01-10 06:41:47,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:47,987 INFO L470 AbstractCegarLoop]: Abstraction has 7976 states and 10427 transitions. [2022-01-10 06:41:47,988 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), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:41:47,988 INFO L276 IsEmpty]: Start isEmpty. Operand 7976 states and 10427 transitions. [2022-01-10 06:41:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 06:41:47,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:47,998 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:41:48,023 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 06:41:48,205 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 06:41:48,206 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:48,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:48,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1342049325, now seen corresponding path program 1 times [2022-01-10 06:41:48,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:48,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1071781942] [2022-01-10 06:41:48,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:48,207 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:48,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:48,208 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 06:41:48,236 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 06:41:48,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:48,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 287 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:48,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 06:41:48,508 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:48,508 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:48,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1071781942] [2022-01-10 06:41:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1071781942] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:48,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:48,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:48,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254330878] [2022-01-10 06:41:48,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:48,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:48,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:48,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:48,510 INFO L87 Difference]: Start difference. First operand 7976 states and 10427 transitions. Second operand has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:41:48,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:48,769 INFO L93 Difference]: Finished difference Result 23146 states and 30642 transitions. [2022-01-10 06:41:48,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:48,770 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 160 [2022-01-10 06:41:48,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:48,819 INFO L225 Difference]: With dead ends: 23146 [2022-01-10 06:41:48,819 INFO L226 Difference]: Without dead ends: 15490 [2022-01-10 06:41:48,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 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 06:41:48,838 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 72 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 322 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:48,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 322 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:48,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15490 states. [2022-01-10 06:41:49,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15490 to 15486. [2022-01-10 06:41:49,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15486 states, 12437 states have (on average 1.2575379914770444) internal successors, (15640), 12695 states have internal predecessors, (15640), 1447 states have call successors, (1447), 1002 states have call predecessors, (1447), 1601 states have return successors, (3052), 1788 states have call predecessors, (3052), 1445 states have call successors, (3052) [2022-01-10 06:41:49,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15486 states to 15486 states and 20139 transitions. [2022-01-10 06:41:49,378 INFO L78 Accepts]: Start accepts. Automaton has 15486 states and 20139 transitions. Word has length 160 [2022-01-10 06:41:49,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:49,378 INFO L470 AbstractCegarLoop]: Abstraction has 15486 states and 20139 transitions. [2022-01-10 06:41:49,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.666666666666664) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 06:41:49,378 INFO L276 IsEmpty]: Start isEmpty. Operand 15486 states and 20139 transitions. [2022-01-10 06:41:49,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-01-10 06:41:49,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:49,396 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 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 06:41:49,404 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:41:49,603 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 06:41:49,603 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:49,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:49,603 INFO L85 PathProgramCache]: Analyzing trace with hash 735411504, now seen corresponding path program 1 times [2022-01-10 06:41:49,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:49,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [760020774] [2022-01-10 06:41:49,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:49,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:49,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:49,605 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 06:41:49,606 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 06:41:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:49,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:41:49,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:49,889 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-10 06:41:49,890 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:49,890 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:49,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [760020774] [2022-01-10 06:41:49,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [760020774] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:49,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:49,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:41:49,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398549093] [2022-01-10 06:41:49,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:49,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:41:49,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:49,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:41:49,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:41:49,891 INFO L87 Difference]: Start difference. First operand 15486 states and 20139 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:41:50,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:50,599 INFO L93 Difference]: Finished difference Result 45039 states and 58793 transitions. [2022-01-10 06:41:50,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 06:41:50,600 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 165 [2022-01-10 06:41:50,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:50,688 INFO L225 Difference]: With dead ends: 45039 [2022-01-10 06:41:50,688 INFO L226 Difference]: Without dead ends: 29558 [2022-01-10 06:41:50,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 06:41:50,724 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 233 mSDsluCounter, 209 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:50,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 359 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:41:50,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29558 states. [2022-01-10 06:41:51,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29558 to 29382. [2022-01-10 06:41:51,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29382 states, 23427 states have (on average 1.251333930934392) internal successors, (29315), 23908 states have internal predecessors, (29315), 2842 states have call successors, (2842), 1953 states have call predecessors, (2842), 3112 states have return successors, (5846), 3520 states have call predecessors, (5846), 2840 states have call successors, (5846) [2022-01-10 06:41:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29382 states to 29382 states and 38003 transitions. [2022-01-10 06:41:51,656 INFO L78 Accepts]: Start accepts. Automaton has 29382 states and 38003 transitions. Word has length 165 [2022-01-10 06:41:51,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:51,656 INFO L470 AbstractCegarLoop]: Abstraction has 29382 states and 38003 transitions. [2022-01-10 06:41:51,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 06:41:51,656 INFO L276 IsEmpty]: Start isEmpty. Operand 29382 states and 38003 transitions. [2022-01-10 06:41:51,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2022-01-10 06:41:51,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:51,762 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:41:51,772 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 06:41:51,979 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 06:41:51,979 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:51,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:51,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1580217451, now seen corresponding path program 1 times [2022-01-10 06:41:51,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:51,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210123914] [2022-01-10 06:41:51,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:51,980 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:51,996 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 06:41:51,997 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 06:41:52,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:52,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:52,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:52,363 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 113 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-01-10 06:41:52,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:52,364 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:52,364 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210123914] [2022-01-10 06:41:52,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210123914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:52,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:52,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:52,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040147301] [2022-01-10 06:41:52,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:52,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:52,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:52,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:52,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:52,366 INFO L87 Difference]: Start difference. First operand 29382 states and 38003 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:41:53,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:53,053 INFO L93 Difference]: Finished difference Result 58594 states and 75783 transitions. [2022-01-10 06:41:53,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:53,054 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 184 [2022-01-10 06:41:53,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:53,141 INFO L225 Difference]: With dead ends: 58594 [2022-01-10 06:41:53,141 INFO L226 Difference]: Without dead ends: 29290 [2022-01-10 06:41:53,178 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 06:41:53,179 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 110 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 360 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 06:41:53,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 360 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:53,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29290 states. [2022-01-10 06:41:53,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29290 to 29286. [2022-01-10 06:41:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29286 states, 23331 states have (on average 1.2338519566242339) internal successors, (28787), 23860 states have internal predecessors, (28787), 2842 states have call successors, (2842), 1953 states have call predecessors, (2842), 3112 states have return successors, (5270), 3472 states have call predecessors, (5270), 2840 states have call successors, (5270) [2022-01-10 06:41:54,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29286 states to 29286 states and 36899 transitions. [2022-01-10 06:41:54,200 INFO L78 Accepts]: Start accepts. Automaton has 29286 states and 36899 transitions. Word has length 184 [2022-01-10 06:41:54,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:54,201 INFO L470 AbstractCegarLoop]: Abstraction has 29286 states and 36899 transitions. [2022-01-10 06:41:54,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 3 states have internal predecessors, (134), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 06:41:54,201 INFO L276 IsEmpty]: Start isEmpty. Operand 29286 states and 36899 transitions. [2022-01-10 06:41:54,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 06:41:54,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:54,204 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 06:41:54,226 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 06:41:54,426 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 06:41:54,427 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:54,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1047606314, now seen corresponding path program 1 times [2022-01-10 06:41:54,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:54,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217276350] [2022-01-10 06:41:54,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:54,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:54,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:54,429 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 06:41:54,431 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 06:41:54,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:54,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:54,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:54,751 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 06:41:54,751 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:54,751 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:54,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217276350] [2022-01-10 06:41:54,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217276350] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:54,751 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:54,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:41:54,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987044870] [2022-01-10 06:41:54,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:54,752 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:54,752 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:54,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:54,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:54,752 INFO L87 Difference]: Start difference. First operand 29286 states and 36899 transitions. Second operand has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:41:55,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:41:55,793 INFO L93 Difference]: Finished difference Result 67834 states and 87932 transitions. [2022-01-10 06:41:55,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:41:55,794 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 190 [2022-01-10 06:41:55,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:41:55,990 INFO L225 Difference]: With dead ends: 67834 [2022-01-10 06:41:55,991 INFO L226 Difference]: Without dead ends: 47874 [2022-01-10 06:41:56,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 06:41:56,026 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 111 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:41:56,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 285 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:41:56,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47874 states. [2022-01-10 06:41:57,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47874 to 47362. [2022-01-10 06:41:57,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47362 states, 37523 states have (on average 1.2253551155291422) internal successors, (45979), 38416 states have internal predecessors, (45979), 4730 states have call successors, (4730), 3249 states have call predecessors, (4730), 5108 states have return successors, (9664), 5696 states have call predecessors, (9664), 4728 states have call successors, (9664) [2022-01-10 06:41:57,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47362 states to 47362 states and 60373 transitions. [2022-01-10 06:41:57,640 INFO L78 Accepts]: Start accepts. Automaton has 47362 states and 60373 transitions. Word has length 190 [2022-01-10 06:41:57,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:41:57,641 INFO L470 AbstractCegarLoop]: Abstraction has 47362 states and 60373 transitions. [2022-01-10 06:41:57,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 42.0) internal successors, (126), 3 states have internal predecessors, (126), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-01-10 06:41:57,641 INFO L276 IsEmpty]: Start isEmpty. Operand 47362 states and 60373 transitions. [2022-01-10 06:41:57,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2022-01-10 06:41:57,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:41:57,646 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 06:41:57,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:41:57,852 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 06:41:57,853 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:41:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:41:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash -217352449, now seen corresponding path program 1 times [2022-01-10 06:41:57,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:41:57,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2043616491] [2022-01-10 06:41:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:41:57,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:41:57,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:41:57,868 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 06:41:57,873 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 06:41:57,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:41:57,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:41:57,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:41:58,261 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-01-10 06:41:58,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:41:58,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:41:58,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2043616491] [2022-01-10 06:41:58,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2043616491] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:41:58,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:41:58,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:41:58,262 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620998933] [2022-01-10 06:41:58,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:41:58,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:41:58,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:41:58,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:41:58,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:41:58,263 INFO L87 Difference]: Start difference. First operand 47362 states and 60373 transitions. Second operand has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:42:00,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:00,183 INFO L93 Difference]: Finished difference Result 139110 states and 177067 transitions. [2022-01-10 06:42:00,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:00,185 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 191 [2022-01-10 06:42:00,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:00,601 INFO L225 Difference]: With dead ends: 139110 [2022-01-10 06:42:00,601 INFO L226 Difference]: Without dead ends: 91826 [2022-01-10 06:42:00,675 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 189 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 06:42:00,676 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 65 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 352 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:00,676 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 352 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:00,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91826 states. [2022-01-10 06:42:03,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91826 to 91822. [2022-01-10 06:42:03,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91822 states, 72727 states have (on average 1.2225308344906294) internal successors, (88911), 74524 states have internal predecessors, (88911), 9130 states have call successors, (9130), 6309 states have call predecessors, (9130), 9964 states have return successors, (18412), 10988 states have call predecessors, (18412), 9128 states have call successors, (18412) [2022-01-10 06:42:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91822 states to 91822 states and 116453 transitions. [2022-01-10 06:42:03,784 INFO L78 Accepts]: Start accepts. Automaton has 91822 states and 116453 transitions. Word has length 191 [2022-01-10 06:42:03,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:03,785 INFO L470 AbstractCegarLoop]: Abstraction has 91822 states and 116453 transitions. [2022-01-10 06:42:03,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.333333333333336) internal successors, (112), 2 states have internal predecessors, (112), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 06:42:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 91822 states and 116453 transitions. [2022-01-10 06:42:03,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2022-01-10 06:42:03,804 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:03,804 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:42:03,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 06:42:04,011 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 06:42:04,011 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1488952798, now seen corresponding path program 1 times [2022-01-10 06:42:04,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1879650695] [2022-01-10 06:42:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:04,012 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:04,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:04,023 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 06:42:04,023 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 06:42:04,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:04,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:42:04,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:04,484 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 277 proven. 0 refuted. 0 times theorem prover too weak. 176 trivial. 0 not checked. [2022-01-10 06:42:04,485 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:04,485 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:04,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1879650695] [2022-01-10 06:42:04,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1879650695] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:04,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:04,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 06:42:04,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190132557] [2022-01-10 06:42:04,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:04,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:42:04,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:04,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:42:04,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:04,486 INFO L87 Difference]: Start difference. First operand 91822 states and 116453 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:42:06,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:06,791 INFO L93 Difference]: Finished difference Result 184634 states and 236544 transitions. [2022-01-10 06:42:06,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:06,791 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 294 [2022-01-10 06:42:06,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:07,137 INFO L225 Difference]: With dead ends: 184634 [2022-01-10 06:42:07,138 INFO L226 Difference]: Without dead ends: 92890 [2022-01-10 06:42:07,269 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 289 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:42:07,270 INFO L933 BasicCegarLoop]: 164 mSDtfsCounter, 7 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 802 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:07,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 802 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92890 states. [2022-01-10 06:42:10,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92890 to 91822. [2022-01-10 06:42:10,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91822 states, 72727 states have (on average 1.2156558087092826) internal successors, (88411), 74524 states have internal predecessors, (88411), 9130 states have call successors, (9130), 6309 states have call predecessors, (9130), 9964 states have return successors, (18412), 10988 states have call predecessors, (18412), 9128 states have call successors, (18412) [2022-01-10 06:42:10,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91822 states to 91822 states and 115953 transitions. [2022-01-10 06:42:10,567 INFO L78 Accepts]: Start accepts. Automaton has 91822 states and 115953 transitions. Word has length 294 [2022-01-10 06:42:10,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:10,569 INFO L470 AbstractCegarLoop]: Abstraction has 91822 states and 115953 transitions. [2022-01-10 06:42:10,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-01-10 06:42:10,569 INFO L276 IsEmpty]: Start isEmpty. Operand 91822 states and 115953 transitions. [2022-01-10 06:42:10,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2022-01-10 06:42:10,587 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:10,587 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:42:10,611 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 06:42:10,796 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 06:42:10,796 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:10,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:10,796 INFO L85 PathProgramCache]: Analyzing trace with hash 1004671646, now seen corresponding path program 2 times [2022-01-10 06:42:10,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:10,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2049509259] [2022-01-10 06:42:10,797 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:42:10,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:10,797 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:10,815 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 06:42:10,831 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 06:42:10,884 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-01-10 06:42:10,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:42:10,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:42:10,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:12,121 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 457 trivial. 0 not checked. [2022-01-10 06:42:12,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:12,122 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:12,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2049509259] [2022-01-10 06:42:12,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2049509259] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:12,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:12,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:12,122 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009904749] [2022-01-10 06:42:12,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:12,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:42:12,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:12,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:42:12,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:42:12,123 INFO L87 Difference]: Start difference. First operand 91822 states and 115953 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 06:42:15,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:15,144 INFO L93 Difference]: Finished difference Result 167259 states and 211732 transitions. [2022-01-10 06:42:15,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:15,144 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 296 [2022-01-10 06:42:15,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:15,664 INFO L225 Difference]: With dead ends: 167259 [2022-01-10 06:42:15,665 INFO L226 Difference]: Without dead ends: 167256 [2022-01-10 06:42:15,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 293 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 06:42:15,721 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 157 mSDsluCounter, 274 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 468 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:15,721 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 468 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:15,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167256 states. [2022-01-10 06:42:20,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167256 to 167117. [2022-01-10 06:42:20,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167117 states, 132382 states have (on average 1.2161472103458173) internal successors, (160996), 135599 states have internal predecessors, (160996), 16613 states have call successors, (16613), 11483 states have call predecessors, (16613), 18121 states have return successors, (33855), 20034 states have call predecessors, (33855), 16611 states have call successors, (33855) [2022-01-10 06:42:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167117 states to 167117 states and 211464 transitions. [2022-01-10 06:42:21,198 INFO L78 Accepts]: Start accepts. Automaton has 167117 states and 211464 transitions. Word has length 296 [2022-01-10 06:42:21,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:21,202 INFO L470 AbstractCegarLoop]: Abstraction has 167117 states and 211464 transitions. [2022-01-10 06:42:21,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-01-10 06:42:21,202 INFO L276 IsEmpty]: Start isEmpty. Operand 167117 states and 211464 transitions. [2022-01-10 06:42:21,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2022-01-10 06:42:21,230 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:21,230 INFO L514 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:42:21,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:21,436 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 06:42:21,437 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:21,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:21,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1079656837, now seen corresponding path program 1 times [2022-01-10 06:42:21,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:21,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563817859] [2022-01-10 06:42:21,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:21,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:21,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:21,440 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 06:42:21,441 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 06:42:21,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:21,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:21,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:21,948 INFO L134 CoverageAnalysis]: Checked inductivity of 457 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-01-10 06:42:21,948 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:21,949 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:21,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563817859] [2022-01-10 06:42:21,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1563817859] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:21,949 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:21,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:21,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431799631] [2022-01-10 06:42:21,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:21,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:21,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:21,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:21,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:21,950 INFO L87 Difference]: Start difference. First operand 167117 states and 211464 transitions. Second operand has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:42:25,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:25,025 INFO L93 Difference]: Finished difference Result 263353 states and 333488 transitions. [2022-01-10 06:42:25,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:25,025 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) Word has length 297 [2022-01-10 06:42:25,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:25,323 INFO L225 Difference]: With dead ends: 263353 [2022-01-10 06:42:25,324 INFO L226 Difference]: Without dead ends: 96317 [2022-01-10 06:42:25,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 296 GetRequests, 295 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 06:42:25,703 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 33 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:25,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 329 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:25,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96317 states. [2022-01-10 06:42:28,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96317 to 96317. [2022-01-10 06:42:28,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96317 states, 76418 states have (on average 1.1999267188358764) internal successors, (91696), 78087 states have internal predecessors, (91696), 9288 states have call successors, (9288), 6927 states have call predecessors, (9288), 10610 states have return successors, (18200), 11302 states have call predecessors, (18200), 9286 states have call successors, (18200) [2022-01-10 06:42:28,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96317 states to 96317 states and 119184 transitions. [2022-01-10 06:42:28,708 INFO L78 Accepts]: Start accepts. Automaton has 96317 states and 119184 transitions. Word has length 297 [2022-01-10 06:42:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:28,709 INFO L470 AbstractCegarLoop]: Abstraction has 96317 states and 119184 transitions. [2022-01-10 06:42:28,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.666666666666664) internal successors, (143), 3 states have internal predecessors, (143), 3 states have call successors, (25), 3 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 3 states have call successors, (24) [2022-01-10 06:42:28,709 INFO L276 IsEmpty]: Start isEmpty. Operand 96317 states and 119184 transitions. [2022-01-10 06:42:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-10 06:42:28,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:28,717 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 06:42:28,724 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 06:42:28,921 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 06:42:28,922 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:28,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:28,922 INFO L85 PathProgramCache]: Analyzing trace with hash -2039301437, now seen corresponding path program 1 times [2022-01-10 06:42:28,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:28,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1699566804] [2022-01-10 06:42:28,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:28,923 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:28,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:28,924 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 06:42:28,925 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 06:42:29,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:29,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:29,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:29,456 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 304 proven. 0 refuted. 0 times theorem prover too weak. 131 trivial. 0 not checked. [2022-01-10 06:42:29,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:29,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:29,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1699566804] [2022-01-10 06:42:29,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1699566804] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:29,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:29,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:29,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871426694] [2022-01-10 06:42:29,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:29,457 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:29,457 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:29,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:29,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:29,457 INFO L87 Difference]: Start difference. First operand 96317 states and 119184 transitions. Second operand has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-01-10 06:42:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:30,701 INFO L93 Difference]: Finished difference Result 120004 states and 149359 transitions. [2022-01-10 06:42:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:30,702 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) Word has length 289 [2022-01-10 06:42:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:30,718 INFO L225 Difference]: With dead ends: 120004 [2022-01-10 06:42:30,718 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 06:42:30,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 287 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 06:42:30,968 INFO L933 BasicCegarLoop]: 256 mSDtfsCounter, 64 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 385 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:30,969 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 385 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 06:42:30,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 06:42:30,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:30,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 06:42:30,978 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 289 [2022-01-10 06:42:30,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:30,978 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 06:42:30,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.333333333333336) internal successors, (178), 3 states have internal predecessors, (178), 3 states have call successors, (26), 3 states have call predecessors, (26), 3 states have return successors, (26), 3 states have call predecessors, (26), 3 states have call successors, (26) [2022-01-10 06:42:30,978 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 06:42:30,978 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 06:42:30,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location errorErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 06:42:31,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 06:42:31,181 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 06:42:31,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.