/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/token_ring.12.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:43:28,132 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:43:28,134 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:43:28,178 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:43:28,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:43:28,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:43:28,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:43:28,186 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:43:28,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:43:28,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:43:28,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:43:28,197 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:43:28,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:43:28,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:43:28,203 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:43:28,205 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:43:28,206 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:43:28,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:43:28,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:43:28,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:43:28,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:43:28,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:43:28,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:43:28,215 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:43:28,217 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:43:28,217 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:43:28,217 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:43:28,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:43:28,218 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:43:28,219 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:43:28,219 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:43:28,219 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:43:28,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:43:28,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:43:28,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:43:28,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:43:28,222 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:43:28,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:43:28,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:43:28,223 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:43:28,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:43:28,225 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 06:43:28,247 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:43:28,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:43:28,248 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:43:28,248 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:43:28,249 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:43:28,249 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:43:28,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:43:28,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:43:28,249 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:43:28,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:43:28,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:43:28,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:43:28,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:43:28,251 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:43:28,251 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:43:28,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:43:28,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:43:28,252 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:43:28,253 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:43:28,253 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:43:28,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:43:28,468 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:43:28,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:43:28,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:43:28,471 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:43:28,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.12.cil-2.c [2022-01-10 06:43:28,524 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024aaefe5/027eb7d3204044f39c9fd70cc5a0d185/FLAG3997c3c47 [2022-01-10 06:43:28,919 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:43:28,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c [2022-01-10 06:43:28,928 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024aaefe5/027eb7d3204044f39c9fd70cc5a0d185/FLAG3997c3c47 [2022-01-10 06:43:28,942 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/024aaefe5/027eb7d3204044f39c9fd70cc5a0d185 [2022-01-10 06:43:28,944 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:43:28,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:43:28,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:43:28,947 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:43:28,949 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:43:28,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:43:28" (1/1) ... [2022-01-10 06:43:28,950 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157362be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:28, skipping insertion in model container [2022-01-10 06:43:28,950 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:43:28" (1/1) ... [2022-01-10 06:43:28,955 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:43:28,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:43:29,152 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c[671,684] [2022-01-10 06:43:29,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:43:29,317 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:43:29,327 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.12.cil-2.c[671,684] [2022-01-10 06:43:29,385 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:43:29,405 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:43:29,405 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29 WrapperNode [2022-01-10 06:43:29,406 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:43:29,406 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:43:29,406 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:43:29,407 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:43:29,411 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,434 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,477 INFO L137 Inliner]: procedures = 52, calls = 67, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 822 [2022-01-10 06:43:29,477 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:43:29,478 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:43:29,478 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:43:29,478 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:43:29,485 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,485 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,497 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,498 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,524 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,530 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:43:29,530 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:43:29,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:43:29,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:43:29,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (1/1) ... [2022-01-10 06:43:29,558 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:43:29,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:43:29,577 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 06:43:29,580 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 06:43:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:43:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:43:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:43:29,606 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 06:43:29,606 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 06:43:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:43:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:43:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:43:29,607 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:43:29,607 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:43:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:43:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:43:29,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:43:29,608 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:43:29,747 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:43:29,748 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:43:30,363 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:43:30,370 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:43:30,370 INFO L299 CfgBuilder]: Removed 15 assume(true) statements. [2022-01-10 06:43:30,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:43:30 BoogieIcfgContainer [2022-01-10 06:43:30,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:43:30,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:43:30,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:43:30,383 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:43:30,383 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:43:28" (1/3) ... [2022-01-10 06:43:30,383 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758ad037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:43:30, skipping insertion in model container [2022-01-10 06:43:30,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:43:29" (2/3) ... [2022-01-10 06:43:30,384 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758ad037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:43:30, skipping insertion in model container [2022-01-10 06:43:30,384 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:43:30" (3/3) ... [2022-01-10 06:43:30,385 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.12.cil-2.c [2022-01-10 06:43:30,388 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:43:30,388 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:43:30,426 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:43:30,431 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 06:43:30,431 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:43:30,447 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 06:43:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:30,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:30,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:30,457 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:30,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash -527385359, now seen corresponding path program 1 times [2022-01-10 06:43:30,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:30,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1291879652] [2022-01-10 06:43:30,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:30,470 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:30,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:30,472 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 06:43:30,473 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 06:43:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:30,658 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:30,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:31,012 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 06:43:31,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:31,013 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:31,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1291879652] [2022-01-10 06:43:31,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1291879652] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:31,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:31,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:31,015 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781934178] [2022-01-10 06:43:31,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:31,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:31,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:31,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:31,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:31,048 INFO L87 Difference]: Start difference. First operand has 382 states, 348 states have (on average 1.6637931034482758) internal successors, (579), 350 states have internal predecessors, (579), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:31,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:31,139 INFO L93 Difference]: Finished difference Result 753 states and 1245 transitions. [2022-01-10 06:43:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:31,142 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:31,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:31,151 INFO L225 Difference]: With dead ends: 753 [2022-01-10 06:43:31,151 INFO L226 Difference]: Without dead ends: 377 [2022-01-10 06:43:31,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 06:43:31,158 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 587 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 597 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 06:43:31,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 597 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:31,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-10 06:43:31,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-01-10 06:43:31,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.5755813953488371) internal successors, (542), 345 states have internal predecessors, (542), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 06:43:31,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 594 transitions. [2022-01-10 06:43:31,220 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 594 transitions. Word has length 177 [2022-01-10 06:43:31,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:31,221 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 594 transitions. [2022-01-10 06:43:31,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:31,221 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 594 transitions. [2022-01-10 06:43:31,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:31,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:31,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:31,233 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 06:43:31,432 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 06:43:31,433 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:31,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:31,433 INFO L85 PathProgramCache]: Analyzing trace with hash -1036164173, now seen corresponding path program 1 times [2022-01-10 06:43:31,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:31,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497699972] [2022-01-10 06:43:31,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:31,435 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:31,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:31,436 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 06:43:31,438 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 06:43:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:31,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:31,589 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:31,815 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 06:43:31,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:31,815 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:31,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497699972] [2022-01-10 06:43:31,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497699972] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:31,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:31,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:31,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [775095968] [2022-01-10 06:43:31,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:31,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:31,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:31,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:31,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:31,824 INFO L87 Difference]: Start difference. First operand 377 states and 594 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:31,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:31,855 INFO L93 Difference]: Finished difference Result 736 states and 1157 transitions. [2022-01-10 06:43:31,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:31,856 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:31,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:31,863 INFO L225 Difference]: With dead ends: 736 [2022-01-10 06:43:31,863 INFO L226 Difference]: Without dead ends: 377 [2022-01-10 06:43:31,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 06:43:31,872 INFO L933 BasicCegarLoop]: 592 mSDtfsCounter, 574 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 592 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 06:43:31,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 592 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:31,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-10 06:43:31,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-01-10 06:43:31,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 344 states have (on average 1.572674418604651) internal successors, (541), 345 states have internal predecessors, (541), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 06:43:31,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 593 transitions. [2022-01-10 06:43:31,901 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 593 transitions. Word has length 177 [2022-01-10 06:43:31,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:31,901 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 593 transitions. [2022-01-10 06:43:31,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:31,901 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 593 transitions. [2022-01-10 06:43:31,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:31,907 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:31,908 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:31,916 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-01-10 06:43:32,118 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 06:43:32,119 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:32,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:32,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1159064693, now seen corresponding path program 1 times [2022-01-10 06:43:32,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:32,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981907247] [2022-01-10 06:43:32,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:32,120 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:32,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:32,127 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 06:43:32,130 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 06:43:32,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:32,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:32,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:32,547 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 06:43:32,548 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:32,548 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:32,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981907247] [2022-01-10 06:43:32,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1981907247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:32,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:32,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:32,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926425740] [2022-01-10 06:43:32,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:32,552 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:32,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:32,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:32,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:32,553 INFO L87 Difference]: Start difference. First operand 377 states and 593 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:33,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:33,167 INFO L93 Difference]: Finished difference Result 1139 states and 1811 transitions. [2022-01-10 06:43:33,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:33,170 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:33,175 INFO L225 Difference]: With dead ends: 1139 [2022-01-10 06:43:33,175 INFO L226 Difference]: Without dead ends: 782 [2022-01-10 06:43:33,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:33,177 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1147 mSDsluCounter, 1179 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1167 SdHoareTripleChecker+Valid, 1822 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:33,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1167 Valid, 1822 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 06:43:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-01-10 06:43:33,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 753. [2022-01-10 06:43:33,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5852601156069364) internal successors, (1097), 694 states have internal predecessors, (1097), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:33,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1192 transitions. [2022-01-10 06:43:33,202 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1192 transitions. Word has length 177 [2022-01-10 06:43:33,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:33,202 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1192 transitions. [2022-01-10 06:43:33,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 3 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:33,203 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1192 transitions. [2022-01-10 06:43:33,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:33,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:33,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:33,216 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 06:43:33,416 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 06:43:33,416 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:33,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:33,417 INFO L85 PathProgramCache]: Analyzing trace with hash 283079417, now seen corresponding path program 1 times [2022-01-10 06:43:33,418 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:33,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1262248516] [2022-01-10 06:43:33,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:33,418 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:33,418 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:33,419 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 06:43:33,420 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 06:43:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:33,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:33,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:33,736 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 06:43:33,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:33,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:33,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1262248516] [2022-01-10 06:43:33,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1262248516] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:33,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:33,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:33,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50572230] [2022-01-10 06:43:33,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:33,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:33,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:33,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:33,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:33,738 INFO L87 Difference]: Start difference. First operand 753 states and 1192 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:34,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:34,093 INFO L93 Difference]: Finished difference Result 1486 states and 2358 transitions. [2022-01-10 06:43:34,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:34,094 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:34,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:34,097 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:34,097 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:34,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:34,105 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 808 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:34,105 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1204 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:34,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:34,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:34,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5751445086705202) internal successors, (1090), 694 states have internal predecessors, (1090), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:34,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1185 transitions. [2022-01-10 06:43:34,143 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1185 transitions. Word has length 177 [2022-01-10 06:43:34,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:34,143 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1185 transitions. [2022-01-10 06:43:34,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:34,143 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1185 transitions. [2022-01-10 06:43:34,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:34,145 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:34,145 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:34,162 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:34,353 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 06:43:34,354 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:34,354 INFO L85 PathProgramCache]: Analyzing trace with hash 1917389813, now seen corresponding path program 1 times [2022-01-10 06:43:34,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:34,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2047792181] [2022-01-10 06:43:34,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:34,355 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:34,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:34,371 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 06:43:34,376 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 06:43:34,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:34,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:34,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:34,716 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 06:43:34,716 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:34,716 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:34,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2047792181] [2022-01-10 06:43:34,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2047792181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:34,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:34,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:34,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950361989] [2022-01-10 06:43:34,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:34,717 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:34,717 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:34,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:34,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:34,718 INFO L87 Difference]: Start difference. First operand 753 states and 1185 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:35,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:35,016 INFO L93 Difference]: Finished difference Result 1486 states and 2344 transitions. [2022-01-10 06:43:35,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:35,016 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:35,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:35,019 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:35,019 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:35,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:35,021 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 802 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:35,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 1197 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:35,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:35,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5650289017341041) internal successors, (1083), 694 states have internal predecessors, (1083), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:35,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1178 transitions. [2022-01-10 06:43:35,043 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1178 transitions. Word has length 177 [2022-01-10 06:43:35,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:35,043 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1178 transitions. [2022-01-10 06:43:35,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:35,044 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1178 transitions. [2022-01-10 06:43:35,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:35,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:35,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:35,055 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 06:43:35,255 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 06:43:35,255 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:35,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:35,256 INFO L85 PathProgramCache]: Analyzing trace with hash 512198135, now seen corresponding path program 1 times [2022-01-10 06:43:35,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:35,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1330820345] [2022-01-10 06:43:35,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:35,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:35,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:35,257 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 06:43:35,262 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 06:43:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:35,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:35,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:35,601 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 06:43:35,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:35,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:35,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1330820345] [2022-01-10 06:43:35,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1330820345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:35,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:35,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:35,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427223525] [2022-01-10 06:43:35,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:35,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:35,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:35,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:35,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:35,602 INFO L87 Difference]: Start difference. First operand 753 states and 1178 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:35,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:35,907 INFO L93 Difference]: Finished difference Result 1486 states and 2330 transitions. [2022-01-10 06:43:35,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:35,907 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:35,908 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:35,910 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:35,910 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:35,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:35,912 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 796 mSDsluCounter, 635 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 816 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:35,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [816 Valid, 1190 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:35,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:35,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:35,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5549132947976878) internal successors, (1076), 694 states have internal predecessors, (1076), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:35,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1171 transitions. [2022-01-10 06:43:35,934 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1171 transitions. Word has length 177 [2022-01-10 06:43:35,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:35,934 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1171 transitions. [2022-01-10 06:43:35,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:35,934 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1171 transitions. [2022-01-10 06:43:35,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:35,935 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:35,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:35,945 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 06:43:36,143 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 06:43:36,144 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:36,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:36,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1640288781, now seen corresponding path program 1 times [2022-01-10 06:43:36,144 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:36,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965797710] [2022-01-10 06:43:36,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:36,145 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:36,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:36,145 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 06:43:36,146 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 06:43:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:36,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:36,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:36,538 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 06:43:36,538 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:36,538 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:36,538 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965797710] [2022-01-10 06:43:36,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965797710] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:36,538 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:36,538 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:36,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291950564] [2022-01-10 06:43:36,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:36,539 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:36,539 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:36,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:36,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:36,540 INFO L87 Difference]: Start difference. First operand 753 states and 1171 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:36,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:36,854 INFO L93 Difference]: Finished difference Result 1486 states and 2316 transitions. [2022-01-10 06:43:36,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:36,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:36,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:36,858 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:36,858 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:36,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:36,860 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 789 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 809 SdHoareTripleChecker+Valid, 1183 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:36,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [809 Valid, 1183 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:36,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:36,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5447976878612717) internal successors, (1069), 694 states have internal predecessors, (1069), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:36,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1164 transitions. [2022-01-10 06:43:36,880 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1164 transitions. Word has length 177 [2022-01-10 06:43:36,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:36,881 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1164 transitions. [2022-01-10 06:43:36,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:36,881 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1164 transitions. [2022-01-10 06:43:36,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:36,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:36,882 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:36,898 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 06:43:37,090 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 06:43:37,091 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:37,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:37,091 INFO L85 PathProgramCache]: Analyzing trace with hash 359703791, now seen corresponding path program 1 times [2022-01-10 06:43:37,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:37,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551964755] [2022-01-10 06:43:37,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:37,092 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:37,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:37,093 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 06:43:37,095 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 06:43:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:37,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:37,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:37,428 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 06:43:37,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:37,428 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:37,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551964755] [2022-01-10 06:43:37,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551964755] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:37,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:37,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:37,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056921025] [2022-01-10 06:43:37,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:37,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:37,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:37,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:37,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:37,429 INFO L87 Difference]: Start difference. First operand 753 states and 1164 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:37,746 INFO L93 Difference]: Finished difference Result 1486 states and 2302 transitions. [2022-01-10 06:43:37,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:37,747 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:37,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:37,750 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:37,750 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:37,752 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:37,753 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 783 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 803 SdHoareTripleChecker+Valid, 1176 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:37,753 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [803 Valid, 1176 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:37,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:37,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:37,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5346820809248556) internal successors, (1062), 694 states have internal predecessors, (1062), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:37,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1157 transitions. [2022-01-10 06:43:37,776 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1157 transitions. Word has length 177 [2022-01-10 06:43:37,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:37,776 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1157 transitions. [2022-01-10 06:43:37,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:37,777 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1157 transitions. [2022-01-10 06:43:37,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:37,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:37,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:37,788 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 06:43:37,988 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 06:43:37,988 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:37,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:37,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1099800973, now seen corresponding path program 1 times [2022-01-10 06:43:37,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:37,989 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727944642] [2022-01-10 06:43:37,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:37,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:37,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:37,990 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 06:43:38,000 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 06:43:38,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:38,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:38,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:38,363 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 06:43:38,363 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:38,363 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:38,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727944642] [2022-01-10 06:43:38,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727944642] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:38,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:38,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:38,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385677970] [2022-01-10 06:43:38,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:38,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:38,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:38,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:38,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:38,366 INFO L87 Difference]: Start difference. First operand 753 states and 1157 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:38,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:38,680 INFO L93 Difference]: Finished difference Result 1486 states and 2288 transitions. [2022-01-10 06:43:38,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:38,681 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:38,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:38,684 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:38,684 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:38,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:38,686 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 777 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 797 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:38,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [797 Valid, 1169 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:38,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:38,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:38,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5245664739884393) internal successors, (1055), 694 states have internal predecessors, (1055), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1150 transitions. [2022-01-10 06:43:38,706 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1150 transitions. Word has length 177 [2022-01-10 06:43:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:38,706 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1150 transitions. [2022-01-10 06:43:38,707 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:38,707 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1150 transitions. [2022-01-10 06:43:38,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:38,708 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:38,708 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:38,716 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 06:43:38,915 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 06:43:38,916 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:38,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:38,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1901159535, now seen corresponding path program 1 times [2022-01-10 06:43:38,917 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:38,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [714131343] [2022-01-10 06:43:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:38,917 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:38,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:38,918 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 06:43:38,921 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 06:43:39,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:39,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:39,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:39,237 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 06:43:39,238 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:39,238 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:39,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [714131343] [2022-01-10 06:43:39,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [714131343] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:39,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:39,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:39,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090096232] [2022-01-10 06:43:39,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:39,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:39,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:39,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:39,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:39,239 INFO L87 Difference]: Start difference. First operand 753 states and 1150 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:39,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:39,557 INFO L93 Difference]: Finished difference Result 1486 states and 2274 transitions. [2022-01-10 06:43:39,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:39,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:39,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:39,560 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:39,560 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:39,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:39,562 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 771 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:39,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [791 Valid, 1162 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:39,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:39,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:39,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.5144508670520231) internal successors, (1048), 694 states have internal predecessors, (1048), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:39,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1143 transitions. [2022-01-10 06:43:39,580 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1143 transitions. Word has length 177 [2022-01-10 06:43:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:39,580 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1143 transitions. [2022-01-10 06:43:39,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:39,581 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1143 transitions. [2022-01-10 06:43:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:39,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:39,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:39,595 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 06:43:39,789 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 06:43:39,790 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:39,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:39,790 INFO L85 PathProgramCache]: Analyzing trace with hash 196849395, now seen corresponding path program 1 times [2022-01-10 06:43:39,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:39,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [228071605] [2022-01-10 06:43:39,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:39,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:39,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:39,792 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 06:43:39,793 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 06:43:39,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:39,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:39,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:40,135 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 06:43:40,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:40,135 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:40,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [228071605] [2022-01-10 06:43:40,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [228071605] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:40,135 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:40,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:40,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531892932] [2022-01-10 06:43:40,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:40,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:40,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:40,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:40,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:40,136 INFO L87 Difference]: Start difference. First operand 753 states and 1143 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:40,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:40,440 INFO L93 Difference]: Finished difference Result 1486 states and 2260 transitions. [2022-01-10 06:43:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:40,440 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:40,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:40,443 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:40,443 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:40,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:40,445 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 765 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:40,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [785 Valid, 1155 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:40,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:40,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.504335260115607) internal successors, (1041), 694 states have internal predecessors, (1041), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1136 transitions. [2022-01-10 06:43:40,478 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1136 transitions. Word has length 177 [2022-01-10 06:43:40,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:40,478 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1136 transitions. [2022-01-10 06:43:40,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:40,478 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1136 transitions. [2022-01-10 06:43:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:40,479 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:40,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:40,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-01-10 06:43:40,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:40,688 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:40,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:40,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1520696337, now seen corresponding path program 1 times [2022-01-10 06:43:40,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:40,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676426171] [2022-01-10 06:43:40,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:40,689 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:40,689 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:40,690 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 06:43:40,691 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 06:43:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:40,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:41,018 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 06:43:41,018 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:41,019 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:41,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676426171] [2022-01-10 06:43:41,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676426171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:41,019 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:41,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:41,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774653193] [2022-01-10 06:43:41,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:41,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:41,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:41,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:41,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:41,020 INFO L87 Difference]: Start difference. First operand 753 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:41,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:41,310 INFO L93 Difference]: Finished difference Result 1486 states and 2246 transitions. [2022-01-10 06:43:41,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:41,310 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:41,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:41,313 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:41,313 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:41,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:41,315 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 759 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:41,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1148 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:41,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:41,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:41,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.4942196531791907) internal successors, (1034), 694 states have internal predecessors, (1034), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1129 transitions. [2022-01-10 06:43:41,336 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1129 transitions. Word has length 177 [2022-01-10 06:43:41,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:41,336 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1129 transitions. [2022-01-10 06:43:41,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:41,336 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1129 transitions. [2022-01-10 06:43:41,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:41,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:41,337 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:41,349 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 06:43:41,545 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 06:43:41,545 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:41,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:41,545 INFO L85 PathProgramCache]: Analyzing trace with hash 376283121, now seen corresponding path program 1 times [2022-01-10 06:43:41,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:41,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553300465] [2022-01-10 06:43:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:41,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:41,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:41,547 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 06:43:41,548 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 06:43:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:41,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:41,660 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:41,887 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 06:43:41,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:41,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:41,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553300465] [2022-01-10 06:43:41,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553300465] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:41,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:41,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:41,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533317952] [2022-01-10 06:43:41,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:41,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:41,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:41,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:41,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:41,889 INFO L87 Difference]: Start difference. First operand 753 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:42,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:42,196 INFO L93 Difference]: Finished difference Result 1486 states and 2232 transitions. [2022-01-10 06:43:42,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:42,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:42,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:42,210 INFO L225 Difference]: With dead ends: 1486 [2022-01-10 06:43:42,210 INFO L226 Difference]: Without dead ends: 753 [2022-01-10 06:43:42,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:42,212 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 753 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:42,212 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 1141 Invalid, 308 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:42,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-01-10 06:43:42,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 753. [2022-01-10 06:43:42,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 692 states have (on average 1.4841040462427746) internal successors, (1027), 694 states have internal predecessors, (1027), 47 states have call successors, (47), 12 states have call predecessors, (47), 13 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:43:42,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1122 transitions. [2022-01-10 06:43:42,234 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1122 transitions. Word has length 177 [2022-01-10 06:43:42,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:42,234 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1122 transitions. [2022-01-10 06:43:42,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:42,234 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1122 transitions. [2022-01-10 06:43:42,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:42,235 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:42,235 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:42,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:42,443 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 06:43:42,443 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:42,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:42,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1529412627, now seen corresponding path program 1 times [2022-01-10 06:43:42,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:42,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [313974154] [2022-01-10 06:43:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:42,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:42,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:42,445 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 06:43:42,446 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 06:43:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:42,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:42,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:42,769 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 06:43:42,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:42,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:42,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [313974154] [2022-01-10 06:43:42,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [313974154] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:42,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:42,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:42,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701013227] [2022-01-10 06:43:42,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:42,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:42,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:42,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:42,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:42,770 INFO L87 Difference]: Start difference. First operand 753 states and 1122 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:43,195 INFO L93 Difference]: Finished difference Result 1678 states and 2516 transitions. [2022-01-10 06:43:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:43,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:43,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:43,199 INFO L225 Difference]: With dead ends: 1678 [2022-01-10 06:43:43,199 INFO L226 Difference]: Without dead ends: 945 [2022-01-10 06:43:43,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:43,202 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 872 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1133 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:43,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1133 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:43,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2022-01-10 06:43:43,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 945. [2022-01-10 06:43:43,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 878 states have (on average 1.460136674259681) internal successors, (1282), 880 states have internal predecessors, (1282), 49 states have call successors, (49), 16 states have call predecessors, (49), 17 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 06:43:43,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1381 transitions. [2022-01-10 06:43:43,233 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1381 transitions. Word has length 177 [2022-01-10 06:43:43,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:43,233 INFO L470 AbstractCegarLoop]: Abstraction has 945 states and 1381 transitions. [2022-01-10 06:43:43,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:43,233 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1381 transitions. [2022-01-10 06:43:43,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:43,234 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:43,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:43,243 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 06:43:43,443 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 06:43:43,443 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:43,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:43,443 INFO L85 PathProgramCache]: Analyzing trace with hash 720426666, now seen corresponding path program 1 times [2022-01-10 06:43:43,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:43,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1440620054] [2022-01-10 06:43:43,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:43,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:43,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:43,445 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 06:43:43,446 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 06:43:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:43,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:43,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:43,752 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 06:43:43,752 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:43,752 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:43,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1440620054] [2022-01-10 06:43:43,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1440620054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:43,752 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:43,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:43,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709821029] [2022-01-10 06:43:43,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:43,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:43,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:43,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:43,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:43,754 INFO L87 Difference]: Start difference. First operand 945 states and 1381 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:44,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:44,191 INFO L93 Difference]: Finished difference Result 2062 states and 3034 transitions. [2022-01-10 06:43:44,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:44,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:44,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:44,196 INFO L225 Difference]: With dead ends: 2062 [2022-01-10 06:43:44,196 INFO L226 Difference]: Without dead ends: 1137 [2022-01-10 06:43:44,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:44,201 INFO L933 BasicCegarLoop]: 529 mSDtfsCounter, 865 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:44,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1127 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:44,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2022-01-10 06:43:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1137. [2022-01-10 06:43:44,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1064 states have (on average 1.4407894736842106) internal successors, (1533), 1066 states have internal predecessors, (1533), 51 states have call successors, (51), 20 states have call predecessors, (51), 21 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 06:43:44,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 1636 transitions. [2022-01-10 06:43:44,237 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 1636 transitions. Word has length 177 [2022-01-10 06:43:44,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:44,237 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 1636 transitions. [2022-01-10 06:43:44,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:44,238 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 1636 transitions. [2022-01-10 06:43:44,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:44,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:44,238 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:44,247 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 06:43:44,446 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 06:43:44,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1266045998, now seen corresponding path program 1 times [2022-01-10 06:43:44,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:44,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1058514162] [2022-01-10 06:43:44,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:44,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:44,476 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 06:43:44,477 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 06:43:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:44,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:44,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:44,806 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 06:43:44,806 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:44,806 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:44,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1058514162] [2022-01-10 06:43:44,806 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1058514162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:44,806 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:44,806 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:44,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1163725613] [2022-01-10 06:43:44,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:44,807 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:44,807 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:44,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:44,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:44,807 INFO L87 Difference]: Start difference. First operand 1137 states and 1636 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:45,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:45,221 INFO L93 Difference]: Finished difference Result 2446 states and 3544 transitions. [2022-01-10 06:43:45,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:45,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:45,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:45,249 INFO L225 Difference]: With dead ends: 2446 [2022-01-10 06:43:45,249 INFO L226 Difference]: Without dead ends: 1329 [2022-01-10 06:43:45,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:45,251 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 859 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:45,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [879 Valid, 1118 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:45,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2022-01-10 06:43:45,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1329. [2022-01-10 06:43:45,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1329 states, 1250 states have (on average 1.424) internal successors, (1780), 1252 states have internal predecessors, (1780), 53 states have call successors, (53), 24 states have call predecessors, (53), 25 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 06:43:45,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1329 states to 1329 states and 1887 transitions. [2022-01-10 06:43:45,292 INFO L78 Accepts]: Start accepts. Automaton has 1329 states and 1887 transitions. Word has length 177 [2022-01-10 06:43:45,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:45,293 INFO L470 AbstractCegarLoop]: Abstraction has 1329 states and 1887 transitions. [2022-01-10 06:43:45,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:45,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1329 states and 1887 transitions. [2022-01-10 06:43:45,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:45,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:45,294 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:45,301 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:45,501 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 06:43:45,501 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:45,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:45,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1579053205, now seen corresponding path program 1 times [2022-01-10 06:43:45,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:45,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1148272819] [2022-01-10 06:43:45,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:45,502 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:45,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:45,503 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 06:43:45,504 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 06:43:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:45,616 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:45,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:45,848 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 06:43:45,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:45,848 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:45,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1148272819] [2022-01-10 06:43:45,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1148272819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:45,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:45,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:45,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294527750] [2022-01-10 06:43:45,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:45,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:45,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:45,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:45,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:45,849 INFO L87 Difference]: Start difference. First operand 1329 states and 1887 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:46,320 INFO L93 Difference]: Finished difference Result 2830 states and 4046 transitions. [2022-01-10 06:43:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:46,320 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:46,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:46,324 INFO L225 Difference]: With dead ends: 2830 [2022-01-10 06:43:46,324 INFO L226 Difference]: Without dead ends: 1521 [2022-01-10 06:43:46,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:46,327 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 852 mSDsluCounter, 590 mSDsCounter, 0 mSdLazyCounter, 411 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 1111 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:46,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [872 Valid, 1111 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 411 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:46,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1521 states. [2022-01-10 06:43:46,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1521 to 1521. [2022-01-10 06:43:46,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1436 states have (on average 1.408774373259053) internal successors, (2023), 1438 states have internal predecessors, (2023), 55 states have call successors, (55), 28 states have call predecessors, (55), 29 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2134 transitions. [2022-01-10 06:43:46,402 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2134 transitions. Word has length 177 [2022-01-10 06:43:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:46,403 INFO L470 AbstractCegarLoop]: Abstraction has 1521 states and 2134 transitions. [2022-01-10 06:43:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2134 transitions. [2022-01-10 06:43:46,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:46,403 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:46,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:46,417 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 06:43:46,611 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 06:43:46,612 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:46,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:46,612 INFO L85 PathProgramCache]: Analyzing trace with hash -609657872, now seen corresponding path program 1 times [2022-01-10 06:43:46,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:46,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1502437361] [2022-01-10 06:43:46,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:46,612 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:46,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:46,613 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 06:43:46,614 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 06:43:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:46,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:46,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:46,938 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 06:43:46,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:46,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:46,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1502437361] [2022-01-10 06:43:46,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1502437361] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:46,938 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:46,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:46,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961542315] [2022-01-10 06:43:46,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:46,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:46,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:46,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:46,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:46,940 INFO L87 Difference]: Start difference. First operand 1521 states and 2134 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:47,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:47,402 INFO L93 Difference]: Finished difference Result 3214 states and 4540 transitions. [2022-01-10 06:43:47,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:47,403 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:47,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:47,408 INFO L225 Difference]: With dead ends: 3214 [2022-01-10 06:43:47,408 INFO L226 Difference]: Without dead ends: 1713 [2022-01-10 06:43:47,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:47,411 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 845 mSDsluCounter, 586 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 1104 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:47,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 1104 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 410 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1713 states. [2022-01-10 06:43:47,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1713 to 1713. [2022-01-10 06:43:47,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1713 states, 1622 states have (on average 1.3945745992601726) internal successors, (2262), 1624 states have internal predecessors, (2262), 57 states have call successors, (57), 32 states have call predecessors, (57), 33 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 06:43:47,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1713 states to 1713 states and 2377 transitions. [2022-01-10 06:43:47,496 INFO L78 Accepts]: Start accepts. Automaton has 1713 states and 2377 transitions. Word has length 177 [2022-01-10 06:43:47,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:47,496 INFO L470 AbstractCegarLoop]: Abstraction has 1713 states and 2377 transitions. [2022-01-10 06:43:47,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:47,496 INFO L276 IsEmpty]: Start isEmpty. Operand 1713 states and 2377 transitions. [2022-01-10 06:43:47,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:47,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:47,498 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:47,516 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 06:43:47,706 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 06:43:47,707 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:47,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:47,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1039953132, now seen corresponding path program 1 times [2022-01-10 06:43:47,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:47,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1145874069] [2022-01-10 06:43:47,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:47,708 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:47,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:47,709 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 06:43:47,710 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 06:43:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:47,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:47,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:48,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:48,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:48,046 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:48,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1145874069] [2022-01-10 06:43:48,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1145874069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:48,046 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:48,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:48,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730892162] [2022-01-10 06:43:48,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:48,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:48,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:48,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:48,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:48,047 INFO L87 Difference]: Start difference. First operand 1713 states and 2377 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:48,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:48,552 INFO L93 Difference]: Finished difference Result 3598 states and 5026 transitions. [2022-01-10 06:43:48,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:48,553 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:48,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:48,559 INFO L225 Difference]: With dead ends: 3598 [2022-01-10 06:43:48,559 INFO L226 Difference]: Without dead ends: 1905 [2022-01-10 06:43:48,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:48,563 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 838 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:48,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1097 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 409 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:48,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2022-01-10 06:43:48,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1905. [2022-01-10 06:43:48,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1905 states, 1808 states have (on average 1.3810840707964602) internal successors, (2497), 1810 states have internal predecessors, (2497), 59 states have call successors, (59), 36 states have call predecessors, (59), 37 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 06:43:48,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1905 states to 1905 states and 2616 transitions. [2022-01-10 06:43:48,683 INFO L78 Accepts]: Start accepts. Automaton has 1905 states and 2616 transitions. Word has length 177 [2022-01-10 06:43:48,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:48,683 INFO L470 AbstractCegarLoop]: Abstraction has 1905 states and 2616 transitions. [2022-01-10 06:43:48,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:48,684 INFO L276 IsEmpty]: Start isEmpty. Operand 1905 states and 2616 transitions. [2022-01-10 06:43:48,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:48,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:48,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:48,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 06:43:48,885 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 06:43:48,885 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:48,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:48,885 INFO L85 PathProgramCache]: Analyzing trace with hash 982524527, now seen corresponding path program 1 times [2022-01-10 06:43:48,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:48,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1533619341] [2022-01-10 06:43:48,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:48,886 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:48,886 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:48,887 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 06:43:48,889 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 06:43:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:49,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:49,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:49,217 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 06:43:49,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:49,218 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:49,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1533619341] [2022-01-10 06:43:49,218 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1533619341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:49,218 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:49,218 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:49,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891930350] [2022-01-10 06:43:49,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:49,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:49,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:49,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:49,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:49,219 INFO L87 Difference]: Start difference. First operand 1905 states and 2616 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:49,717 INFO L93 Difference]: Finished difference Result 3982 states and 5504 transitions. [2022-01-10 06:43:49,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:49,718 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:49,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:49,724 INFO L225 Difference]: With dead ends: 3982 [2022-01-10 06:43:49,724 INFO L226 Difference]: Without dead ends: 2097 [2022-01-10 06:43:49,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:49,728 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 831 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:49,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 1090 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:49,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2022-01-10 06:43:49,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2097. [2022-01-10 06:43:49,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1994 states have (on average 1.3681043129388164) internal successors, (2728), 1996 states have internal predecessors, (2728), 61 states have call successors, (61), 40 states have call predecessors, (61), 41 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 06:43:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2851 transitions. [2022-01-10 06:43:49,824 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2851 transitions. Word has length 177 [2022-01-10 06:43:49,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:49,825 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2851 transitions. [2022-01-10 06:43:49,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:49,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2851 transitions. [2022-01-10 06:43:49,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:49,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:49,826 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:49,835 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 06:43:50,031 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 06:43:50,032 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:50,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:50,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1462452843, now seen corresponding path program 1 times [2022-01-10 06:43:50,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:50,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [381542495] [2022-01-10 06:43:50,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:50,032 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:50,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:50,033 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 06:43:50,034 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 06:43:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:50,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:50,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:50,338 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 06:43:50,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:50,338 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:50,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [381542495] [2022-01-10 06:43:50,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [381542495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:50,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:50,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:50,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14231652] [2022-01-10 06:43:50,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:50,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:50,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:50,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:50,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:50,339 INFO L87 Difference]: Start difference. First operand 2097 states and 2851 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:50,823 INFO L93 Difference]: Finished difference Result 4366 states and 5974 transitions. [2022-01-10 06:43:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:50,823 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:50,829 INFO L225 Difference]: With dead ends: 4366 [2022-01-10 06:43:50,829 INFO L226 Difference]: Without dead ends: 2289 [2022-01-10 06:43:50,833 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:50,833 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 823 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:50,834 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1083 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:50,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2022-01-10 06:43:50,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2289. [2022-01-10 06:43:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2289 states, 2180 states have (on average 1.3555045871559632) internal successors, (2955), 2182 states have internal predecessors, (2955), 63 states have call successors, (63), 44 states have call predecessors, (63), 45 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 06:43:50,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2289 states to 2289 states and 3082 transitions. [2022-01-10 06:43:50,943 INFO L78 Accepts]: Start accepts. Automaton has 2289 states and 3082 transitions. Word has length 177 [2022-01-10 06:43:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:50,944 INFO L470 AbstractCegarLoop]: Abstraction has 2289 states and 3082 transitions. [2022-01-10 06:43:50,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:50,944 INFO L276 IsEmpty]: Start isEmpty. Operand 2289 states and 3082 transitions. [2022-01-10 06:43:50,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:50,944 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:50,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:50,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:51,153 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 06:43:51,153 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:51,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:51,153 INFO L85 PathProgramCache]: Analyzing trace with hash -289001113, now seen corresponding path program 1 times [2022-01-10 06:43:51,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:51,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [415836082] [2022-01-10 06:43:51,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:51,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:51,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:51,156 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:51,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:43:51,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:51,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:51,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:51,451 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 06:43:51,452 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:51,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:51,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [415836082] [2022-01-10 06:43:51,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [415836082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:51,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:51,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:51,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887854679] [2022-01-10 06:43:51,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:51,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:51,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:51,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:51,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:51,453 INFO L87 Difference]: Start difference. First operand 2289 states and 3082 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:51,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:51,908 INFO L93 Difference]: Finished difference Result 4750 states and 6436 transitions. [2022-01-10 06:43:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:51,910 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:51,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:51,917 INFO L225 Difference]: With dead ends: 4750 [2022-01-10 06:43:51,917 INFO L226 Difference]: Without dead ends: 2481 [2022-01-10 06:43:51,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:51,921 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 816 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:51,921 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 1076 Invalid, 444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:51,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2481 states. [2022-01-10 06:43:52,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2481 to 2481. [2022-01-10 06:43:52,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2481 states, 2366 states have (on average 1.3431952662721893) internal successors, (3178), 2368 states have internal predecessors, (3178), 65 states have call successors, (65), 48 states have call predecessors, (65), 49 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 06:43:52,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2481 states to 2481 states and 3309 transitions. [2022-01-10 06:43:52,046 INFO L78 Accepts]: Start accepts. Automaton has 2481 states and 3309 transitions. Word has length 177 [2022-01-10 06:43:52,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:52,046 INFO L470 AbstractCegarLoop]: Abstraction has 2481 states and 3309 transitions. [2022-01-10 06:43:52,046 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:52,046 INFO L276 IsEmpty]: Start isEmpty. Operand 2481 states and 3309 transitions. [2022-01-10 06:43:52,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:52,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:52,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:52,054 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 06:43:52,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:52,247 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:52,248 INFO L85 PathProgramCache]: Analyzing trace with hash 608673132, now seen corresponding path program 1 times [2022-01-10 06:43:52,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:52,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438852106] [2022-01-10 06:43:52,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:52,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:52,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:52,249 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:52,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:43:52,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:52,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:52,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:52,553 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 06:43:52,554 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:52,554 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:52,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438852106] [2022-01-10 06:43:52,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1438852106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:52,554 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:52,554 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:52,554 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393045568] [2022-01-10 06:43:52,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:52,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:52,555 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:52,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:52,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:52,555 INFO L87 Difference]: Start difference. First operand 2481 states and 3309 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:53,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:53,034 INFO L93 Difference]: Finished difference Result 5134 states and 6890 transitions. [2022-01-10 06:43:53,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:53,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:53,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:53,039 INFO L225 Difference]: With dead ends: 5134 [2022-01-10 06:43:53,040 INFO L226 Difference]: Without dead ends: 2673 [2022-01-10 06:43:53,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:53,043 INFO L933 BasicCegarLoop]: 503 mSDtfsCounter, 809 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:53,043 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [829 Valid, 1069 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:53,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2673 states. [2022-01-10 06:43:53,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2673 to 2673. [2022-01-10 06:43:53,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2673 states, 2552 states have (on average 1.3311128526645768) internal successors, (3397), 2554 states have internal predecessors, (3397), 67 states have call successors, (67), 52 states have call predecessors, (67), 53 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 06:43:53,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2673 states to 2673 states and 3532 transitions. [2022-01-10 06:43:53,153 INFO L78 Accepts]: Start accepts. Automaton has 2673 states and 3532 transitions. Word has length 177 [2022-01-10 06:43:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:53,153 INFO L470 AbstractCegarLoop]: Abstraction has 2673 states and 3532 transitions. [2022-01-10 06:43:53,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 2673 states and 3532 transitions. [2022-01-10 06:43:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:53,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:53,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:53,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:53,360 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:53,360 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:53,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:53,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1116347240, now seen corresponding path program 1 times [2022-01-10 06:43:53,361 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:53,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [878179342] [2022-01-10 06:43:53,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:53,361 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:53,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:53,362 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:53,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:43:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:53,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:53,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:53,666 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 06:43:53,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:53,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:53,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [878179342] [2022-01-10 06:43:53,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [878179342] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:53,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:53,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:53,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590770173] [2022-01-10 06:43:53,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:53,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:53,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:53,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:53,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:53,679 INFO L87 Difference]: Start difference. First operand 2673 states and 3532 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:54,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:54,174 INFO L93 Difference]: Finished difference Result 5518 states and 7336 transitions. [2022-01-10 06:43:54,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:54,175 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:54,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:54,181 INFO L225 Difference]: With dead ends: 5518 [2022-01-10 06:43:54,182 INFO L226 Difference]: Without dead ends: 2865 [2022-01-10 06:43:54,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:54,186 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 802 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:54,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [822 Valid, 1062 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:43:54,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-01-10 06:43:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2022-01-10 06:43:54,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2738 states have (on average 1.3192111029948868) internal successors, (3612), 2740 states have internal predecessors, (3612), 69 states have call successors, (69), 56 states have call predecessors, (69), 57 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 06:43:54,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 3751 transitions. [2022-01-10 06:43:54,327 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 3751 transitions. Word has length 177 [2022-01-10 06:43:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:54,327 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 3751 transitions. [2022-01-10 06:43:54,327 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 3751 transitions. [2022-01-10 06:43:54,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:54,328 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:54,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:54,335 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 06:43:54,536 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:54,536 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:54,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:54,537 INFO L85 PathProgramCache]: Analyzing trace with hash -37154323, now seen corresponding path program 1 times [2022-01-10 06:43:54,537 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:54,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [264109180] [2022-01-10 06:43:54,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:54,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:54,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:54,538 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:54,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:43:54,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:54,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:54,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:54,849 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 06:43:54,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:54,849 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:54,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [264109180] [2022-01-10 06:43:54,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [264109180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:54,850 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:54,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:54,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183140070] [2022-01-10 06:43:54,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:54,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:54,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:54,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:54,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:54,851 INFO L87 Difference]: Start difference. First operand 2865 states and 3751 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:55,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:55,355 INFO L93 Difference]: Finished difference Result 5902 states and 7774 transitions. [2022-01-10 06:43:55,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:55,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:55,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:55,362 INFO L225 Difference]: With dead ends: 5902 [2022-01-10 06:43:55,362 INFO L226 Difference]: Without dead ends: 3057 [2022-01-10 06:43:55,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:43:55,366 INFO L933 BasicCegarLoop]: 497 mSDtfsCounter, 795 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:55,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [815 Valid, 1055 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:55,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3057 states. [2022-01-10 06:43:55,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3057 to 3057. [2022-01-10 06:43:55,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3057 states, 2924 states have (on average 1.3074555403556771) internal successors, (3823), 2926 states have internal predecessors, (3823), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:43:55,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3057 states to 3057 states and 3966 transitions. [2022-01-10 06:43:55,525 INFO L78 Accepts]: Start accepts. Automaton has 3057 states and 3966 transitions. Word has length 177 [2022-01-10 06:43:55,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:55,525 INFO L470 AbstractCegarLoop]: Abstraction has 3057 states and 3966 transitions. [2022-01-10 06:43:55,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:55,525 INFO L276 IsEmpty]: Start isEmpty. Operand 3057 states and 3966 transitions. [2022-01-10 06:43:55,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:55,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:55,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:55,534 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:43:55,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:55,734 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:55,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:55,735 INFO L85 PathProgramCache]: Analyzing trace with hash -453421142, now seen corresponding path program 1 times [2022-01-10 06:43:55,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:55,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [447282747] [2022-01-10 06:43:55,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:55,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:55,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:55,737 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:55,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:43:55,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:55,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:55,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:56,012 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 06:43:56,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:56,012 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:56,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [447282747] [2022-01-10 06:43:56,012 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [447282747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:56,012 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:56,013 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:56,013 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726493444] [2022-01-10 06:43:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:56,013 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:56,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:56,014 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:56,014 INFO L87 Difference]: Start difference. First operand 3057 states and 3966 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:56,219 INFO L93 Difference]: Finished difference Result 6443 states and 8405 transitions. [2022-01-10 06:43:56,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:56,219 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:56,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:56,227 INFO L225 Difference]: With dead ends: 6443 [2022-01-10 06:43:56,227 INFO L226 Difference]: Without dead ends: 3407 [2022-01-10 06:43:56,234 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:56,235 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 479 mSDsluCounter, 1756 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2280 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:56,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 2280 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:56,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2022-01-10 06:43:56,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3063. [2022-01-10 06:43:56,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3063 states, 2930 states have (on average 1.2986348122866893) internal successors, (3805), 2932 states have internal predecessors, (3805), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:43:56,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3063 states to 3063 states and 3948 transitions. [2022-01-10 06:43:56,443 INFO L78 Accepts]: Start accepts. Automaton has 3063 states and 3948 transitions. Word has length 177 [2022-01-10 06:43:56,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:56,443 INFO L470 AbstractCegarLoop]: Abstraction has 3063 states and 3948 transitions. [2022-01-10 06:43:56,444 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:56,445 INFO L276 IsEmpty]: Start isEmpty. Operand 3063 states and 3948 transitions. [2022-01-10 06:43:56,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:56,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:56,445 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:56,455 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:56,653 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:56,653 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:56,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:56,654 INFO L85 PathProgramCache]: Analyzing trace with hash 34625964, now seen corresponding path program 1 times [2022-01-10 06:43:56,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:56,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [790037611] [2022-01-10 06:43:56,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:56,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:56,656 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:56,656 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:43:56,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:56,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:56,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:56,954 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 06:43:56,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:56,955 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:56,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [790037611] [2022-01-10 06:43:56,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [790037611] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:56,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:56,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:56,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1197267993] [2022-01-10 06:43:56,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:56,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:56,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:56,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:56,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:56,956 INFO L87 Difference]: Start difference. First operand 3063 states and 3948 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:57,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:57,200 INFO L93 Difference]: Finished difference Result 6427 states and 8333 transitions. [2022-01-10 06:43:57,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:57,201 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:57,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:57,208 INFO L225 Difference]: With dead ends: 6427 [2022-01-10 06:43:57,209 INFO L226 Difference]: Without dead ends: 3385 [2022-01-10 06:43:57,214 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:57,214 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 440 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:57,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2265 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:57,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3385 states. [2022-01-10 06:43:57,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3385 to 3069. [2022-01-10 06:43:57,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3069 states, 2936 states have (on average 1.289850136239782) internal successors, (3787), 2938 states have internal predecessors, (3787), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:43:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3069 states to 3069 states and 3930 transitions. [2022-01-10 06:43:57,401 INFO L78 Accepts]: Start accepts. Automaton has 3069 states and 3930 transitions. Word has length 177 [2022-01-10 06:43:57,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:57,401 INFO L470 AbstractCegarLoop]: Abstraction has 3069 states and 3930 transitions. [2022-01-10 06:43:57,401 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:57,401 INFO L276 IsEmpty]: Start isEmpty. Operand 3069 states and 3930 transitions. [2022-01-10 06:43:57,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:57,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:57,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:57,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:57,609 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:57,609 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:57,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:57,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1963558190, now seen corresponding path program 1 times [2022-01-10 06:43:57,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:57,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1945335098] [2022-01-10 06:43:57,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:57,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:57,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:57,611 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:57,611 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:43:57,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:57,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:57,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:57,901 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 06:43:57,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:57,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:57,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1945335098] [2022-01-10 06:43:57,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1945335098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:57,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:57,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:57,902 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240451943] [2022-01-10 06:43:57,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:57,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:57,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:57,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:57,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:57,902 INFO L87 Difference]: Start difference. First operand 3069 states and 3930 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:58,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:58,100 INFO L93 Difference]: Finished difference Result 6411 states and 8261 transitions. [2022-01-10 06:43:58,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:58,100 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:58,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:58,107 INFO L225 Difference]: With dead ends: 6411 [2022-01-10 06:43:58,107 INFO L226 Difference]: Without dead ends: 3363 [2022-01-10 06:43:58,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:58,113 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 401 mSDsluCounter, 1726 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:58,114 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2250 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:58,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2022-01-10 06:43:58,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3075. [2022-01-10 06:43:58,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3075 states, 2942 states have (on average 1.2811012916383413) internal successors, (3769), 2944 states have internal predecessors, (3769), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:43:58,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3075 states to 3075 states and 3912 transitions. [2022-01-10 06:43:58,340 INFO L78 Accepts]: Start accepts. Automaton has 3075 states and 3912 transitions. Word has length 177 [2022-01-10 06:43:58,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:58,340 INFO L470 AbstractCegarLoop]: Abstraction has 3075 states and 3912 transitions. [2022-01-10 06:43:58,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:58,341 INFO L276 IsEmpty]: Start isEmpty. Operand 3075 states and 3912 transitions. [2022-01-10 06:43:58,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:58,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:58,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:58,351 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:58,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:58,550 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:58,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 924973616, now seen corresponding path program 1 times [2022-01-10 06:43:58,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:58,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1469970802] [2022-01-10 06:43:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:58,550 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:58,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:58,551 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:58,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:43:58,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:58,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:58,673 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:58,876 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 06:43:58,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:58,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:58,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1469970802] [2022-01-10 06:43:58,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1469970802] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:58,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:58,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:58,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142321135] [2022-01-10 06:43:58,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:58,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:58,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:58,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:58,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:58,878 INFO L87 Difference]: Start difference. First operand 3075 states and 3912 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:59,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:59,117 INFO L93 Difference]: Finished difference Result 6395 states and 8189 transitions. [2022-01-10 06:43:59,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:59,117 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:43:59,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:59,124 INFO L225 Difference]: With dead ends: 6395 [2022-01-10 06:43:59,124 INFO L226 Difference]: Without dead ends: 3341 [2022-01-10 06:43:59,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:59,127 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 362 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2235 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:59,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2235 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:59,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3341 states. [2022-01-10 06:43:59,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3341 to 3081. [2022-01-10 06:43:59,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3081 states, 2948 states have (on average 1.2723880597014925) internal successors, (3751), 2950 states have internal predecessors, (3751), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:43:59,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3081 states to 3081 states and 3894 transitions. [2022-01-10 06:43:59,312 INFO L78 Accepts]: Start accepts. Automaton has 3081 states and 3894 transitions. Word has length 177 [2022-01-10 06:43:59,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:59,312 INFO L470 AbstractCegarLoop]: Abstraction has 3081 states and 3894 transitions. [2022-01-10 06:43:59,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:59,312 INFO L276 IsEmpty]: Start isEmpty. Operand 3081 states and 3894 transitions. [2022-01-10 06:43:59,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:43:59,313 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:59,313 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:43:59,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:59,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:59,521 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:59,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:59,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1108420430, now seen corresponding path program 1 times [2022-01-10 06:43:59,521 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:59,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1178856108] [2022-01-10 06:43:59,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:59,522 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:59,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:59,523 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:59,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:43:59,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:59,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 431 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:59,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:59,821 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 06:43:59,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:59,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:59,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1178856108] [2022-01-10 06:43:59,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1178856108] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:59,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:59,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:59,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151378912] [2022-01-10 06:43:59,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:59,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:59,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:59,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:59,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:59,822 INFO L87 Difference]: Start difference. First operand 3081 states and 3894 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:00,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:00,045 INFO L93 Difference]: Finished difference Result 6351 states and 8081 transitions. [2022-01-10 06:44:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:00,045 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:00,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:00,059 INFO L225 Difference]: With dead ends: 6351 [2022-01-10 06:44:00,059 INFO L226 Difference]: Without dead ends: 3291 [2022-01-10 06:44:00,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:00,064 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 284 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:00,064 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2205 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:00,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3291 states. [2022-01-10 06:44:00,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3291 to 3087. [2022-01-10 06:44:00,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3087 states, 2954 states have (on average 1.2637102234258633) internal successors, (3733), 2956 states have internal predecessors, (3733), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:44:00,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3087 states to 3087 states and 3876 transitions. [2022-01-10 06:44:00,287 INFO L78 Accepts]: Start accepts. Automaton has 3087 states and 3876 transitions. Word has length 177 [2022-01-10 06:44:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:00,287 INFO L470 AbstractCegarLoop]: Abstraction has 3087 states and 3876 transitions. [2022-01-10 06:44:00,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:00,288 INFO L276 IsEmpty]: Start isEmpty. Operand 3087 states and 3876 transitions. [2022-01-10 06:44:00,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:00,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:00,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:00,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:00,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:00,497 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:00,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:00,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1245964852, now seen corresponding path program 1 times [2022-01-10 06:44:00,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:00,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119667027] [2022-01-10 06:44:00,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:00,498 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:00,498 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:00,499 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:00,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:44:00,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:00,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:00,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:00,803 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 06:44:00,804 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:00,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:00,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1119667027] [2022-01-10 06:44:00,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1119667027] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:00,804 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:00,804 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:00,804 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566274734] [2022-01-10 06:44:00,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:00,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:00,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:00,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:00,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:00,805 INFO L87 Difference]: Start difference. First operand 3087 states and 3876 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:01,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:01,024 INFO L93 Difference]: Finished difference Result 6335 states and 8009 transitions. [2022-01-10 06:44:01,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:01,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:01,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:01,032 INFO L225 Difference]: With dead ends: 6335 [2022-01-10 06:44:01,032 INFO L226 Difference]: Without dead ends: 3269 [2022-01-10 06:44:01,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:01,037 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 245 mSDsluCounter, 1666 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2190 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:01,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2190 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:01,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3269 states. [2022-01-10 06:44:01,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3269 to 3093. [2022-01-10 06:44:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2960 states have (on average 1.2550675675675675) internal successors, (3715), 2962 states have internal predecessors, (3715), 71 states have call successors, (71), 60 states have call predecessors, (71), 61 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 06:44:01,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 3858 transitions. [2022-01-10 06:44:01,309 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 3858 transitions. Word has length 177 [2022-01-10 06:44:01,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:01,309 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 3858 transitions. [2022-01-10 06:44:01,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 3858 transitions. [2022-01-10 06:44:01,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:01,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:01,310 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:01,318 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 06:44:01,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:01,518 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:01,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1172519626, now seen corresponding path program 1 times [2022-01-10 06:44:01,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:01,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889719303] [2022-01-10 06:44:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:01,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:01,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:01,520 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:01,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:44:01,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:01,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:01,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:01,860 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 06:44:01,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:01,861 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:01,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889719303] [2022-01-10 06:44:01,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889719303] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:01,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:01,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:44:01,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575646194] [2022-01-10 06:44:01,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:01,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:01,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:01,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:01,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:01,862 INFO L87 Difference]: Start difference. First operand 3093 states and 3858 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:02,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:02,250 INFO L93 Difference]: Finished difference Result 9010 states and 11258 transitions. [2022-01-10 06:44:02,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:02,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:02,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:02,261 INFO L225 Difference]: With dead ends: 9010 [2022-01-10 06:44:02,261 INFO L226 Difference]: Without dead ends: 5938 [2022-01-10 06:44:02,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 06:44:02,265 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 420 mSDsluCounter, 483 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 420 SdHoareTripleChecker+Valid, 1082 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 06:44:02,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [420 Valid, 1082 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:02,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5938 states. [2022-01-10 06:44:02,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5938 to 5932. [2022-01-10 06:44:02,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5932 states, 5679 states have (on average 1.247050537066385) internal successors, (7082), 5682 states have internal predecessors, (7082), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5932 states to 5932 states and 7352 transitions. [2022-01-10 06:44:02,664 INFO L78 Accepts]: Start accepts. Automaton has 5932 states and 7352 transitions. Word has length 177 [2022-01-10 06:44:02,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:02,664 INFO L470 AbstractCegarLoop]: Abstraction has 5932 states and 7352 transitions. [2022-01-10 06:44:02,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:02,664 INFO L276 IsEmpty]: Start isEmpty. Operand 5932 states and 7352 transitions. [2022-01-10 06:44:02,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:02,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:02,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:02,674 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:02,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:02,873 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:02,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:02,874 INFO L85 PathProgramCache]: Analyzing trace with hash 1722299959, now seen corresponding path program 1 times [2022-01-10 06:44:02,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:02,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1583773383] [2022-01-10 06:44:02,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:02,874 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:02,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:02,875 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:02,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:44:02,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:02,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:02,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:03,174 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 06:44:03,174 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:03,174 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:03,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1583773383] [2022-01-10 06:44:03,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1583773383] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:03,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:03,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:03,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426801141] [2022-01-10 06:44:03,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:03,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:03,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:03,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:03,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:03,175 INFO L87 Difference]: Start difference. First operand 5932 states and 7352 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:03,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:03,726 INFO L93 Difference]: Finished difference Result 13845 states and 17350 transitions. [2022-01-10 06:44:03,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:03,726 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:03,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:03,740 INFO L225 Difference]: With dead ends: 13845 [2022-01-10 06:44:03,740 INFO L226 Difference]: Without dead ends: 7934 [2022-01-10 06:44:03,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:03,748 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 209 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:03,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 2213 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:03,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7934 states. [2022-01-10 06:44:04,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7934 to 6010. [2022-01-10 06:44:04,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6010 states, 5757 states have (on average 1.2395344797637657) internal successors, (7136), 5760 states have internal predecessors, (7136), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:04,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6010 states to 6010 states and 7406 transitions. [2022-01-10 06:44:04,250 INFO L78 Accepts]: Start accepts. Automaton has 6010 states and 7406 transitions. Word has length 177 [2022-01-10 06:44:04,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:04,250 INFO L470 AbstractCegarLoop]: Abstraction has 6010 states and 7406 transitions. [2022-01-10 06:44:04,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:04,251 INFO L276 IsEmpty]: Start isEmpty. Operand 6010 states and 7406 transitions. [2022-01-10 06:44:04,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:04,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:04,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:04,259 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 06:44:04,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:04,459 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:04,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:04,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1962539705, now seen corresponding path program 1 times [2022-01-10 06:44:04,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:04,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914004887] [2022-01-10 06:44:04,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:04,460 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:04,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:04,461 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:04,461 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:44:04,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:04,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:04,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:04,740 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 06:44:04,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:04,741 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:04,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914004887] [2022-01-10 06:44:04,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1914004887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:04,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:04,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:04,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874660339] [2022-01-10 06:44:04,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:04,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:04,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:04,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:04,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:04,742 INFO L87 Difference]: Start difference. First operand 6010 states and 7406 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:05,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:05,212 INFO L93 Difference]: Finished difference Result 12125 states and 15044 transitions. [2022-01-10 06:44:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:05,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:05,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:05,224 INFO L225 Difference]: With dead ends: 12125 [2022-01-10 06:44:05,224 INFO L226 Difference]: Without dead ends: 6136 [2022-01-10 06:44:05,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:05,232 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 166 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:05,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2155 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:05,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6136 states. [2022-01-10 06:44:05,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6136 to 6016. [2022-01-10 06:44:05,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6016 states, 5763 states have (on average 1.2309560992538608) internal successors, (7094), 5766 states have internal predecessors, (7094), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:05,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6016 states to 6016 states and 7364 transitions. [2022-01-10 06:44:05,677 INFO L78 Accepts]: Start accepts. Automaton has 6016 states and 7364 transitions. Word has length 177 [2022-01-10 06:44:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:05,677 INFO L470 AbstractCegarLoop]: Abstraction has 6016 states and 7364 transitions. [2022-01-10 06:44:05,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:05,677 INFO L276 IsEmpty]: Start isEmpty. Operand 6016 states and 7364 transitions. [2022-01-10 06:44:05,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:05,678 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:05,678 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:05,686 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 06:44:05,879 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:05,879 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:05,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:05,880 INFO L85 PathProgramCache]: Analyzing trace with hash 51497147, now seen corresponding path program 1 times [2022-01-10 06:44:05,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:05,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814656698] [2022-01-10 06:44:05,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:05,880 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:05,880 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:05,881 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:05,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 06:44:05,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:05,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:05,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:06,165 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 06:44:06,165 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:06,166 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:06,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814656698] [2022-01-10 06:44:06,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814656698] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:06,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:06,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:06,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149932306] [2022-01-10 06:44:06,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:06,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:06,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:06,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:06,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:06,167 INFO L87 Difference]: Start difference. First operand 6016 states and 7364 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:06,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:06,635 INFO L93 Difference]: Finished difference Result 12207 states and 15048 transitions. [2022-01-10 06:44:06,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:06,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:06,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:06,648 INFO L225 Difference]: With dead ends: 12207 [2022-01-10 06:44:06,648 INFO L226 Difference]: Without dead ends: 6212 [2022-01-10 06:44:06,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:06,656 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 127 mSDsluCounter, 1616 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2140 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:06,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2140 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:06,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6212 states. [2022-01-10 06:44:07,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6212 to 6028. [2022-01-10 06:44:07,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6028 states, 5775 states have (on average 1.2225108225108225) internal successors, (7060), 5778 states have internal predecessors, (7060), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:07,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6028 states to 6028 states and 7330 transitions. [2022-01-10 06:44:07,162 INFO L78 Accepts]: Start accepts. Automaton has 6028 states and 7330 transitions. Word has length 177 [2022-01-10 06:44:07,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:07,162 INFO L470 AbstractCegarLoop]: Abstraction has 6028 states and 7330 transitions. [2022-01-10 06:44:07,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:07,162 INFO L276 IsEmpty]: Start isEmpty. Operand 6028 states and 7330 transitions. [2022-01-10 06:44:07,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:07,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:07,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:07,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:07,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:07,371 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:07,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:07,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1164656579, now seen corresponding path program 1 times [2022-01-10 06:44:07,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:07,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [744325218] [2022-01-10 06:44:07,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:07,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:07,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:07,373 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:07,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 06:44:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:07,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:07,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:07,657 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 06:44:07,657 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:07,658 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:07,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [744325218] [2022-01-10 06:44:07,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [744325218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:07,658 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:07,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:07,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116647116] [2022-01-10 06:44:07,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:07,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:07,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:07,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:07,659 INFO L87 Difference]: Start difference. First operand 6028 states and 7330 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:08,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:08,150 INFO L93 Difference]: Finished difference Result 12175 states and 14908 transitions. [2022-01-10 06:44:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:08,150 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:08,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:08,161 INFO L225 Difference]: With dead ends: 12175 [2022-01-10 06:44:08,161 INFO L226 Difference]: Without dead ends: 6168 [2022-01-10 06:44:08,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:08,168 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 88 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:08,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2125 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:08,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6168 states. [2022-01-10 06:44:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6168 to 6040. [2022-01-10 06:44:08,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6040 states, 5787 states have (on average 1.2141005702436496) internal successors, (7026), 5790 states have internal predecessors, (7026), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:08,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6040 states to 6040 states and 7296 transitions. [2022-01-10 06:44:08,597 INFO L78 Accepts]: Start accepts. Automaton has 6040 states and 7296 transitions. Word has length 177 [2022-01-10 06:44:08,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:08,597 INFO L470 AbstractCegarLoop]: Abstraction has 6040 states and 7296 transitions. [2022-01-10 06:44:08,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:08,597 INFO L276 IsEmpty]: Start isEmpty. Operand 6040 states and 7296 transitions. [2022-01-10 06:44:08,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:08,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:08,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:08,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 06:44:08,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:08,799 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:08,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:08,799 INFO L85 PathProgramCache]: Analyzing trace with hash 796918079, now seen corresponding path program 1 times [2022-01-10 06:44:08,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:08,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [573134324] [2022-01-10 06:44:08,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:08,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:08,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:08,803 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:08,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 06:44:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:08,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:08,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:09,088 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 06:44:09,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:09,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:09,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [573134324] [2022-01-10 06:44:09,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [573134324] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:09,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:09,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:09,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778133976] [2022-01-10 06:44:09,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:09,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:09,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:09,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:09,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:09,090 INFO L87 Difference]: Start difference. First operand 6040 states and 7296 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:09,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:09,564 INFO L93 Difference]: Finished difference Result 12143 states and 14768 transitions. [2022-01-10 06:44:09,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:09,565 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:09,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:09,576 INFO L225 Difference]: With dead ends: 12143 [2022-01-10 06:44:09,576 INFO L226 Difference]: Without dead ends: 6124 [2022-01-10 06:44:09,584 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:09,584 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 49 mSDsluCounter, 1586 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2110 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:09,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2110 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:09,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6124 states. [2022-01-10 06:44:10,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6124 to 6052. [2022-01-10 06:44:10,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6052 states, 5799 states have (on average 1.2057251250215555) internal successors, (6992), 5802 states have internal predecessors, (6992), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6052 states to 6052 states and 7262 transitions. [2022-01-10 06:44:10,054 INFO L78 Accepts]: Start accepts. Automaton has 6052 states and 7262 transitions. Word has length 177 [2022-01-10 06:44:10,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:10,054 INFO L470 AbstractCegarLoop]: Abstraction has 6052 states and 7262 transitions. [2022-01-10 06:44:10,055 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6052 states and 7262 transitions. [2022-01-10 06:44:10,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:10,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:10,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:10,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:10,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:10,259 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:10,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:10,260 INFO L85 PathProgramCache]: Analyzing trace with hash -2111263807, now seen corresponding path program 1 times [2022-01-10 06:44:10,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [95383332] [2022-01-10 06:44:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:10,260 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:10,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:10,261 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:10,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 06:44:10,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:10,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:44:10,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:10,532 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 06:44:10,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:10,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:10,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [95383332] [2022-01-10 06:44:10,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [95383332] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:10,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:10,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:44:10,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391909694] [2022-01-10 06:44:10,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:10,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:10,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:10,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:10,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:10,534 INFO L87 Difference]: Start difference. First operand 6052 states and 7262 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:11,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:11,034 INFO L93 Difference]: Finished difference Result 12111 states and 14628 transitions. [2022-01-10 06:44:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:11,035 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:11,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:11,047 INFO L225 Difference]: With dead ends: 12111 [2022-01-10 06:44:11,047 INFO L226 Difference]: Without dead ends: 6080 [2022-01-10 06:44:11,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:11,053 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 10 mSDsluCounter, 1571 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2095 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:11,053 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2095 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6080 states. [2022-01-10 06:44:11,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6080 to 6064. [2022-01-10 06:44:11,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6064 states, 5811 states have (on average 1.1973842712097746) internal successors, (6958), 5814 states have internal predecessors, (6958), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:11,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7228 transitions. [2022-01-10 06:44:11,536 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7228 transitions. Word has length 177 [2022-01-10 06:44:11,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:11,536 INFO L470 AbstractCegarLoop]: Abstraction has 6064 states and 7228 transitions. [2022-01-10 06:44:11,536 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 5 states have internal predecessors, (167), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:11,536 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7228 transitions. [2022-01-10 06:44:11,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:11,537 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:11,537 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:11,544 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 06:44:11,737 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:11,737 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:11,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:11,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2126782525, now seen corresponding path program 1 times [2022-01-10 06:44:11,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:11,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [945264699] [2022-01-10 06:44:11,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:11,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:11,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:11,739 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:11,742 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 06:44:11,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:11,843 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:44:11,845 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:12,092 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 06:44:12,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:12,093 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:12,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [945264699] [2022-01-10 06:44:12,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [945264699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:12,093 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:12,093 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:12,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52602106] [2022-01-10 06:44:12,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:12,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:12,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:12,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:12,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:12,094 INFO L87 Difference]: Start difference. First operand 6064 states and 7228 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:12,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:12,844 INFO L93 Difference]: Finished difference Result 12108 states and 14435 transitions. [2022-01-10 06:44:12,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:12,844 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:12,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:12,854 INFO L225 Difference]: With dead ends: 12108 [2022-01-10 06:44:12,854 INFO L226 Difference]: Without dead ends: 6064 [2022-01-10 06:44:12,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:44:12,860 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 588 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 607 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:12,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [607 Valid, 1050 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:12,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2022-01-10 06:44:13,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 6064. [2022-01-10 06:44:13,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6064 states, 5811 states have (on average 1.1949750473240406) internal successors, (6944), 5814 states have internal predecessors, (6944), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:13,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7214 transitions. [2022-01-10 06:44:13,342 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7214 transitions. Word has length 177 [2022-01-10 06:44:13,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:13,343 INFO L470 AbstractCegarLoop]: Abstraction has 6064 states and 7214 transitions. [2022-01-10 06:44:13,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:13,343 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7214 transitions. [2022-01-10 06:44:13,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:13,343 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:13,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:13,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:13,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:13,552 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:13,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:13,552 INFO L85 PathProgramCache]: Analyzing trace with hash -1703135803, now seen corresponding path program 1 times [2022-01-10 06:44:13,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:13,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1623744404] [2022-01-10 06:44:13,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:13,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:13,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:13,553 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:13,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 06:44:13,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:13,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:44:13,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:13,921 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 06:44:13,921 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:13,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:13,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1623744404] [2022-01-10 06:44:13,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1623744404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:13,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:13,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:13,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823357050] [2022-01-10 06:44:13,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:13,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:13,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:13,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:13,922 INFO L87 Difference]: Start difference. First operand 6064 states and 7214 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:14,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:14,661 INFO L93 Difference]: Finished difference Result 12108 states and 14407 transitions. [2022-01-10 06:44:14,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:44:14,661 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:14,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:14,672 INFO L225 Difference]: With dead ends: 12108 [2022-01-10 06:44:14,672 INFO L226 Difference]: Without dead ends: 6064 [2022-01-10 06:44:14,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 173 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 06:44:14,679 INFO L933 BasicCegarLoop]: 492 mSDtfsCounter, 575 mSDsluCounter, 551 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:14,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 1043 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6064 states. [2022-01-10 06:44:15,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6064 to 6064. [2022-01-10 06:44:15,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6064 states, 5811 states have (on average 1.1925658234383067) internal successors, (6930), 5814 states have internal predecessors, (6930), 134 states have call successors, (134), 116 states have call predecessors, (134), 118 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:15,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6064 states to 6064 states and 7200 transitions. [2022-01-10 06:44:15,176 INFO L78 Accepts]: Start accepts. Automaton has 6064 states and 7200 transitions. Word has length 177 [2022-01-10 06:44:15,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:15,176 INFO L470 AbstractCegarLoop]: Abstraction has 6064 states and 7200 transitions. [2022-01-10 06:44:15,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:15,176 INFO L276 IsEmpty]: Start isEmpty. Operand 6064 states and 7200 transitions. [2022-01-10 06:44:15,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:15,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:15,177 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:15,185 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 06:44:15,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:15,383 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:15,384 INFO L85 PathProgramCache]: Analyzing trace with hash -1775522361, now seen corresponding path program 1 times [2022-01-10 06:44:15,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [253297959] [2022-01-10 06:44:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:15,384 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:15,384 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:15,385 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:15,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 06:44:15,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:15,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 420 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:44:15,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:15,754 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 06:44:15,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:15,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:15,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [253297959] [2022-01-10 06:44:15,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [253297959] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:15,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:15,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:15,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858753077] [2022-01-10 06:44:15,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:15,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:44:15,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:15,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:44:15,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:44:15,756 INFO L87 Difference]: Start difference. First operand 6064 states and 7200 transitions. Second operand has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:16,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:16,729 INFO L93 Difference]: Finished difference Result 12484 states and 14844 transitions. [2022-01-10 06:44:16,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:44:16,730 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 177 [2022-01-10 06:44:16,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:16,740 INFO L225 Difference]: With dead ends: 12484 [2022-01-10 06:44:16,740 INFO L226 Difference]: Without dead ends: 6440 [2022-01-10 06:44:16,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:44:16,748 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 710 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:16,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 1080 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:44:16,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6440 states. [2022-01-10 06:44:17,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6440 to 6362. [2022-01-10 06:44:17,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6362 states, 6105 states have (on average 1.181981981981982) internal successors, (7216), 6108 states have internal predecessors, (7216), 134 states have call successors, (134), 120 states have call predecessors, (134), 122 states have return successors, (136), 134 states have call predecessors, (136), 134 states have call successors, (136) [2022-01-10 06:44:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6362 states to 6362 states and 7486 transitions. [2022-01-10 06:44:17,250 INFO L78 Accepts]: Start accepts. Automaton has 6362 states and 7486 transitions. Word has length 177 [2022-01-10 06:44:17,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:17,250 INFO L470 AbstractCegarLoop]: Abstraction has 6362 states and 7486 transitions. [2022-01-10 06:44:17,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.4) internal successors, (167), 4 states have internal predecessors, (167), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:44:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6362 states and 7486 transitions. [2022-01-10 06:44:17,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-01-10 06:44:17,251 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:17,251 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:17,273 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:17,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:17,458 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:17,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:17,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1634973751, now seen corresponding path program 1 times [2022-01-10 06:44:17,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:17,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288156943] [2022-01-10 06:44:17,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:17,459 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:17,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:17,460 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:17,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 06:44:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:17,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 419 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:17,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:17,796 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 06:44:17,796 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:17,796 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288156943] [2022-01-10 06:44:17,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288156943] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:17,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:17,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:44:17,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408336408] [2022-01-10 06:44:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:17,797 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:17,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:17,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:17,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:17,797 INFO L87 Difference]: Start difference. First operand 6362 states and 7486 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:44:18,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:18,791 INFO L93 Difference]: Finished difference Result 18963 states and 22398 transitions. [2022-01-10 06:44:18,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:18,792 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 177 [2022-01-10 06:44:18,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:18,817 INFO L225 Difference]: With dead ends: 18963 [2022-01-10 06:44:18,817 INFO L226 Difference]: Without dead ends: 12622 [2022-01-10 06:44:18,829 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 175 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 06:44:18,830 INFO L933 BasicCegarLoop]: 538 mSDtfsCounter, 333 mSDsluCounter, 474 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 1012 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 06:44:18,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 1012 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:18,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12622 states. [2022-01-10 06:44:19,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12622 to 12618. [2022-01-10 06:44:19,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12618 states, 12109 states have (on average 1.1764803039061855) internal successors, (14246), 12118 states have internal predecessors, (14246), 264 states have call successors, (264), 240 states have call predecessors, (264), 244 states have return successors, (268), 260 states have call predecessors, (268), 264 states have call successors, (268) [2022-01-10 06:44:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12618 states to 12618 states and 14778 transitions. [2022-01-10 06:44:19,918 INFO L78 Accepts]: Start accepts. Automaton has 12618 states and 14778 transitions. Word has length 177 [2022-01-10 06:44:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:19,919 INFO L470 AbstractCegarLoop]: Abstraction has 12618 states and 14778 transitions. [2022-01-10 06:44:19,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 2 states have internal predecessors, (167), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:44:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 12618 states and 14778 transitions. [2022-01-10 06:44:19,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-10 06:44:19,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:19,926 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:19,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:20,135 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:20,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash 228771400, now seen corresponding path program 1 times [2022-01-10 06:44:20,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:20,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1102383329] [2022-01-10 06:44:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:20,136 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:20,136 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:20,137 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:20,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 06:44:20,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:20,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:44:20,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:20,681 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 06:44:20,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:20,681 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:20,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1102383329] [2022-01-10 06:44:20,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1102383329] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:20,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:20,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:20,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630701276] [2022-01-10 06:44:20,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:20,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:44:20,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:20,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:44:20,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:44:20,683 INFO L87 Difference]: Start difference. First operand 12618 states and 14778 transitions. Second operand has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:44:22,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:22,967 INFO L93 Difference]: Finished difference Result 37525 states and 43895 transitions. [2022-01-10 06:44:22,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:22,968 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 289 [2022-01-10 06:44:22,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:23,026 INFO L225 Difference]: With dead ends: 37525 [2022-01-10 06:44:23,026 INFO L226 Difference]: Without dead ends: 24929 [2022-01-10 06:44:23,041 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 287 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 06:44:23,042 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 682 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 688 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:23,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [688 Valid, 1662 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:44:23,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24929 states. [2022-01-10 06:44:25,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24929 to 24927. [2022-01-10 06:44:25,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24927 states, 23927 states have (on average 1.1720232373469301) internal successors, (28043), 23953 states have internal predecessors, (28043), 511 states have call successors, (511), 464 states have call predecessors, (511), 488 states have return successors, (559), 511 states have call predecessors, (559), 511 states have call successors, (559) [2022-01-10 06:44:25,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24927 states to 24927 states and 29113 transitions. [2022-01-10 06:44:25,274 INFO L78 Accepts]: Start accepts. Automaton has 24927 states and 29113 transitions. Word has length 289 [2022-01-10 06:44:25,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:25,275 INFO L470 AbstractCegarLoop]: Abstraction has 24927 states and 29113 transitions. [2022-01-10 06:44:25,275 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.5) internal successors, (194), 4 states have internal predecessors, (194), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:44:25,275 INFO L276 IsEmpty]: Start isEmpty. Operand 24927 states and 29113 transitions. [2022-01-10 06:44:25,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2022-01-10 06:44:25,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:25,288 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:25,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 06:44:25,498 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:25,498 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:25,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:25,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1614864310, now seen corresponding path program 1 times [2022-01-10 06:44:25,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:25,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1757026362] [2022-01-10 06:44:25,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:25,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:25,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:25,500 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:25,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 06:44:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:25,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 592 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:44:25,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-01-10 06:44:25,928 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:25,928 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1757026362] [2022-01-10 06:44:25,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1757026362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:25,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:25,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:44:25,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509533169] [2022-01-10 06:44:25,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:25,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:44:25,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:25,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:44:25,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:44:25,929 INFO L87 Difference]: Start difference. First operand 24927 states and 29113 transitions. Second operand has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:44:28,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:28,097 INFO L93 Difference]: Finished difference Result 49817 states and 58162 transitions. [2022-01-10 06:44:28,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:44:28,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 289 [2022-01-10 06:44:28,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:28,150 INFO L225 Difference]: With dead ends: 49817 [2022-01-10 06:44:28,150 INFO L226 Difference]: Without dead ends: 24912 [2022-01-10 06:44:28,177 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 06:44:28,178 INFO L933 BasicCegarLoop]: 516 mSDtfsCounter, 509 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 516 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 06:44:28,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 516 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:44:28,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24912 states. [2022-01-10 06:44:30,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24912 to 24912. [2022-01-10 06:44:30,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24912 states, 23915 states have (on average 1.1716914070666946) internal successors, (28021), 23940 states have internal predecessors, (28021), 508 states have call successors, (508), 464 states have call predecessors, (508), 488 states have return successors, (556), 508 states have call predecessors, (556), 508 states have call successors, (556) [2022-01-10 06:44:30,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24912 states to 24912 states and 29085 transitions. [2022-01-10 06:44:30,451 INFO L78 Accepts]: Start accepts. Automaton has 24912 states and 29085 transitions. Word has length 289 [2022-01-10 06:44:30,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:44:30,451 INFO L470 AbstractCegarLoop]: Abstraction has 24912 states and 29085 transitions. [2022-01-10 06:44:30,451 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 61.666666666666664) internal successors, (185), 3 states have internal predecessors, (185), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:44:30,451 INFO L276 IsEmpty]: Start isEmpty. Operand 24912 states and 29085 transitions. [2022-01-10 06:44:30,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2022-01-10 06:44:30,462 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:44:30,462 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:44:30,470 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-01-10 06:44:30,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:44:30,663 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:44:30,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:44:30,663 INFO L85 PathProgramCache]: Analyzing trace with hash 1887980712, now seen corresponding path program 1 times [2022-01-10 06:44:30,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:44:30,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766371819] [2022-01-10 06:44:30,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:44:30,664 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:44:30,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:44:30,665 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:44:30,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 06:44:30,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:44:30,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:44:30,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:44:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-01-10 06:44:31,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:44:31,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:44:31,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766371819] [2022-01-10 06:44:31,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766371819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:44:31,208 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:44:31,208 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:44:31,208 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892308627] [2022-01-10 06:44:31,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:44:31,208 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:44:31,208 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:44:31,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:44:31,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:44:31,209 INFO L87 Difference]: Start difference. First operand 24912 states and 29085 transitions. Second operand has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:44:36,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:44:36,032 INFO L93 Difference]: Finished difference Result 73502 states and 85768 transitions. [2022-01-10 06:44:36,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:44:36,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.75) internal successors, (195), 4 states have internal predecessors, (195), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 290 [2022-01-10 06:44:36,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:44:36,123 INFO L225 Difference]: With dead ends: 73502 [2022-01-10 06:44:36,123 INFO L226 Difference]: Without dead ends: 48612 [2022-01-10 06:44:36,151 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 288 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 06:44:36,151 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 677 mSDsluCounter, 889 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:44:36,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [683 Valid, 1622 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:44:36,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48612 states.