/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:48:12,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:48:12,051 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:48:12,111 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:48:12,112 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:48:12,115 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:48:12,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:48:12,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:48:12,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:48:12,127 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:48:12,128 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:48:12,129 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:48:12,129 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:48:12,131 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:48:12,133 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:48:12,135 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:48:12,136 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:48:12,137 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:48:12,139 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:48:12,145 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:48:12,146 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:48:12,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:48:12,149 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:48:12,149 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:48:12,152 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:48:12,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:48:12,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:48:12,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:48:12,157 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:48:12,158 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:48:12,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:48:12,159 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:48:12,159 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:48:12,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:48:12,160 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:48:12,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:48:12,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:48:12,197 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:48:12,197 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:48:12,198 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:48:12,198 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:48:12,199 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:48:12,199 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:48:12,199 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:48:12,199 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:48:12,199 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:48:12,200 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:48:12,200 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:48:12,200 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:48:12,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:48:12,202 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:12,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:48:12,202 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:48:12,203 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:48:12,203 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:48:12,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:48:12,203 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:48:12,203 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:48:12,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:48:12,457 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:48:12,459 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:48:12,459 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:48:12,460 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:48:12,461 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c [2022-01-10 07:48:12,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded5c541a/929d5a7cabd74035a346d89a3efb144d/FLAGbacdc3ffa [2022-01-10 07:48:13,349 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:48:13,350 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c [2022-01-10 07:48:13,401 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded5c541a/929d5a7cabd74035a346d89a3efb144d/FLAGbacdc3ffa [2022-01-10 07:48:13,501 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ded5c541a/929d5a7cabd74035a346d89a3efb144d [2022-01-10 07:48:13,504 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:48:13,506 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:48:13,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:13,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:48:13,512 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:48:13,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:13" (1/1) ... [2022-01-10 07:48:13,514 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e40ce68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:13, skipping insertion in model container [2022-01-10 07:48:13,514 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:13" (1/1) ... [2022-01-10 07:48:13,520 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:48:13,690 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:48:15,263 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2022-01-10 07:48:15,284 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2022-01-10 07:48:15,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:15,563 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:48:16,373 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c[382357,382370] [2022-01-10 07:48:16,377 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.10.cil-1.c[383339,383352] [2022-01-10 07:48:16,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:16,464 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:48:16,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16 WrapperNode [2022-01-10 07:48:16,465 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:16,466 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:16,466 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:48:16,466 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:48:16,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:16,627 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:16,904 INFO L137 Inliner]: procedures = 65, calls = 72, calls flagged for inlining = 41, calls inlined = 41, statements flattened = 13049 [2022-01-10 07:48:16,905 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:16,905 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:48:16,906 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:48:16,906 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:48:16,913 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:16,913 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:16,969 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:16,969 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:17,221 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:17,272 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:17,303 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:17,434 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:48:17,435 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:48:17,436 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:48:17,436 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:48:17,437 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (1/1) ... [2022-01-10 07:48:17,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:17,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:48:17,469 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:48:17,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:48:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:48:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:48:17,508 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:48:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:48:17,508 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:48:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:48:17,508 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:48:17,508 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:48:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:48:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:48:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:48:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:48:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:48:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:48:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:48:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:48:17,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:48:17,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:48:17,661 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:48:17,662 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:48:25,755 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:48:25,780 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:48:25,780 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2022-01-10 07:48:25,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:25 BoogieIcfgContainer [2022-01-10 07:48:25,784 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:48:25,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:48:25,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:48:25,789 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:48:25,789 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:48:13" (1/3) ... [2022-01-10 07:48:25,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd414bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:25, skipping insertion in model container [2022-01-10 07:48:25,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:16" (2/3) ... [2022-01-10 07:48:25,790 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bd414bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:25, skipping insertion in model container [2022-01-10 07:48:25,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:25" (3/3) ... [2022-01-10 07:48:25,792 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.10.cil-1.c [2022-01-10 07:48:25,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:48:25,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:48:25,845 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:48:25,851 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:48:25,851 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:48:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:48:25,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:25,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:25,938 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] [2022-01-10 07:48:25,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:25,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:25,946 INFO L85 PathProgramCache]: Analyzing trace with hash -289990772, now seen corresponding path program 1 times [2022-01-10 07:48:25,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:25,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [908146537] [2022-01-10 07:48:25,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:25,961 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:25,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:26,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:48:26,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:26,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:26,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:26,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:26,572 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:26,572 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:26,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [908146537] [2022-01-10 07:48:26,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [908146537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:26,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:26,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:48:26,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107726983] [2022-01-10 07:48:26,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:26,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:26,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:26,618 INFO L87 Difference]: Start difference. First operand has 2523 states, 2487 states have (on average 1.845999195818255) internal successors, (4591), 2492 states have internal predecessors, (4591), 26 states have call successors, (26), 7 states have call predecessors, (26), 7 states have return successors, (26), 25 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:26,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:26,805 INFO L93 Difference]: Finished difference Result 5035 states and 9267 transitions. [2022-01-10 07:48:26,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:26,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:26,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:26,834 INFO L225 Difference]: With dead ends: 5035 [2022-01-10 07:48:26,835 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:26,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:26,850 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 517 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 517 SdHoareTripleChecker+Valid, 8572 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:26,851 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [517 Valid, 8572 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:26,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:26,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8306484923585296) internal successors, (4432), 2424 states have internal predecessors, (4432), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:26,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4482 transitions. [2022-01-10 07:48:26,995 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4482 transitions. Word has length 157 [2022-01-10 07:48:26,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:26,997 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4482 transitions. [2022-01-10 07:48:26,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:26,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4482 transitions. [2022-01-10 07:48:27,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:27,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:27,000 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] [2022-01-10 07:48:27,019 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 07:48:27,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:27,212 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:27,213 INFO L85 PathProgramCache]: Analyzing trace with hash -628278322, now seen corresponding path program 1 times [2022-01-10 07:48:27,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1387714278] [2022-01-10 07:48:27,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:27,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:27,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:27,215 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:27,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:48:27,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:27,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:27,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:27,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:27,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:27,734 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:27,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1387714278] [2022-01-10 07:48:27,735 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1387714278] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:27,738 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:27,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:27,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773747035] [2022-01-10 07:48:27,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:27,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:27,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:27,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:27,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:27,744 INFO L87 Difference]: Start difference. First operand 2455 states and 4482 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:28,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:28,235 INFO L93 Difference]: Finished difference Result 2771 states and 4980 transitions. [2022-01-10 07:48:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:28,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:28,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:28,250 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:28,251 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:28,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:28,254 INFO L933 BasicCegarLoop]: 4452 mSDtfsCounter, 4661 mSDsluCounter, 8487 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4679 SdHoareTripleChecker+Valid, 12939 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:28,255 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4679 Valid, 12939 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:28,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:28,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:28,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8294093349855431) internal successors, (4429), 2424 states have internal predecessors, (4429), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:28,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4479 transitions. [2022-01-10 07:48:28,330 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4479 transitions. Word has length 157 [2022-01-10 07:48:28,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:28,332 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4479 transitions. [2022-01-10 07:48:28,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:28,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4479 transitions. [2022-01-10 07:48:28,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:28,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:28,338 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] [2022-01-10 07:48:28,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:28,548 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:28,549 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:28,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:28,550 INFO L85 PathProgramCache]: Analyzing trace with hash 1194322002, now seen corresponding path program 1 times [2022-01-10 07:48:28,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:28,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769805] [2022-01-10 07:48:28,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:28,551 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:28,551 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:28,552 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:28,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:48:28,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:28,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:28,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:29,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:29,071 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:29,071 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:29,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769805] [2022-01-10 07:48:29,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:29,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:29,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:29,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597908838] [2022-01-10 07:48:29,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:29,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:29,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:29,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:29,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:29,078 INFO L87 Difference]: Start difference. First operand 2455 states and 4479 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:29,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:29,648 INFO L93 Difference]: Finished difference Result 2771 states and 4974 transitions. [2022-01-10 07:48:29,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:29,649 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:29,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:29,659 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:29,659 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:29,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:29,662 INFO L933 BasicCegarLoop]: 4449 mSDtfsCounter, 4655 mSDsluCounter, 8483 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4673 SdHoareTripleChecker+Valid, 12932 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:29,663 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4673 Valid, 12932 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:29,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:29,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8281701776125567) internal successors, (4426), 2424 states have internal predecessors, (4426), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4476 transitions. [2022-01-10 07:48:29,726 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4476 transitions. Word has length 157 [2022-01-10 07:48:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:29,726 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4476 transitions. [2022-01-10 07:48:29,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:29,727 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4476 transitions. [2022-01-10 07:48:29,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:29,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:29,729 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] [2022-01-10 07:48:29,742 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:29,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:29,939 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:29,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:29,940 INFO L85 PathProgramCache]: Analyzing trace with hash -423118448, now seen corresponding path program 1 times [2022-01-10 07:48:29,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:29,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1681514510] [2022-01-10 07:48:29,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:29,941 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:29,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:29,942 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:29,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:48:30,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:30,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:30,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:30,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:30,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:30,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1681514510] [2022-01-10 07:48:30,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1681514510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:30,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:30,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:30,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322596490] [2022-01-10 07:48:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:30,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:30,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:30,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:30,348 INFO L87 Difference]: Start difference. First operand 2455 states and 4476 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:30,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:30,754 INFO L93 Difference]: Finished difference Result 2771 states and 4968 transitions. [2022-01-10 07:48:30,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:30,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:30,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:30,765 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:30,765 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:30,767 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:30,767 INFO L933 BasicCegarLoop]: 4446 mSDtfsCounter, 4649 mSDsluCounter, 8479 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 12925 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:30,768 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4667 Valid, 12925 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:30,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:30,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:30,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8269310202395703) internal successors, (4423), 2424 states have internal predecessors, (4423), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:30,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4473 transitions. [2022-01-10 07:48:30,823 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4473 transitions. Word has length 157 [2022-01-10 07:48:30,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:30,824 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4473 transitions. [2022-01-10 07:48:30,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:30,824 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4473 transitions. [2022-01-10 07:48:30,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:30,826 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:30,826 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] [2022-01-10 07:48:30,839 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:31,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:31,038 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:31,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:31,038 INFO L85 PathProgramCache]: Analyzing trace with hash -1905019116, now seen corresponding path program 1 times [2022-01-10 07:48:31,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:31,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1164424320] [2022-01-10 07:48:31,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:31,039 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:31,040 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:31,041 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:31,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:48:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:31,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:31,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:31,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:31,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:31,419 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:31,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1164424320] [2022-01-10 07:48:31,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1164424320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:31,419 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:31,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:31,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203986057] [2022-01-10 07:48:31,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:31,420 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:31,420 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:31,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:31,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:31,421 INFO L87 Difference]: Start difference. First operand 2455 states and 4473 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:31,825 INFO L93 Difference]: Finished difference Result 2771 states and 4962 transitions. [2022-01-10 07:48:31,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:31,826 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:31,837 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:31,837 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:31,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:31,840 INFO L933 BasicCegarLoop]: 4443 mSDtfsCounter, 4643 mSDsluCounter, 8475 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4661 SdHoareTripleChecker+Valid, 12918 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:31,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4661 Valid, 12918 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:31,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:31,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:31,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8256918628665841) internal successors, (4420), 2424 states have internal predecessors, (4420), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4470 transitions. [2022-01-10 07:48:31,908 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4470 transitions. Word has length 157 [2022-01-10 07:48:31,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:31,909 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4470 transitions. [2022-01-10 07:48:31,909 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:31,909 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4470 transitions. [2022-01-10 07:48:31,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:31,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:31,911 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] [2022-01-10 07:48:31,926 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:32,126 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:32,127 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:32,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:32,128 INFO L85 PathProgramCache]: Analyzing trace with hash 1649408272, now seen corresponding path program 1 times [2022-01-10 07:48:32,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:32,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [474673241] [2022-01-10 07:48:32,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:32,129 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:32,129 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:32,130 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:32,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:48:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:32,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 430 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:32,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:32,558 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:32,558 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:32,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [474673241] [2022-01-10 07:48:32,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [474673241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:32,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:32,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:32,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295502799] [2022-01-10 07:48:32,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:32,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:32,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:32,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:32,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:32,561 INFO L87 Difference]: Start difference. First operand 2455 states and 4470 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:32,989 INFO L93 Difference]: Finished difference Result 2771 states and 4956 transitions. [2022-01-10 07:48:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:32,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:32,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:33,001 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:33,001 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:33,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:33,008 INFO L933 BasicCegarLoop]: 4440 mSDtfsCounter, 4637 mSDsluCounter, 8471 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4655 SdHoareTripleChecker+Valid, 12911 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:33,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4655 Valid, 12911 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:33,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:33,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:33,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8244527054935977) internal successors, (4417), 2424 states have internal predecessors, (4417), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4467 transitions. [2022-01-10 07:48:33,080 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4467 transitions. Word has length 157 [2022-01-10 07:48:33,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:33,081 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4467 transitions. [2022-01-10 07:48:33,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4467 transitions. [2022-01-10 07:48:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:33,084 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:33,084 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] [2022-01-10 07:48:33,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:33,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:33,297 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:33,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:33,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1764067220, now seen corresponding path program 1 times [2022-01-10 07:48:33,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:33,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [88314492] [2022-01-10 07:48:33,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:33,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:33,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:33,299 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:33,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:48:33,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:33,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:33,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:33,696 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:33,696 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:33,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [88314492] [2022-01-10 07:48:33,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [88314492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:33,696 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:33,696 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:33,696 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017481343] [2022-01-10 07:48:33,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:33,697 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:33,697 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:33,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:33,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:33,698 INFO L87 Difference]: Start difference. First operand 2455 states and 4467 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:34,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:34,118 INFO L93 Difference]: Finished difference Result 2771 states and 4950 transitions. [2022-01-10 07:48:34,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:34,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:34,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:34,129 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:34,129 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:34,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:34,131 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4631 mSDsluCounter, 8467 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4649 SdHoareTripleChecker+Valid, 12904 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:34,132 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4649 Valid, 12904 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:34,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:34,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8232135481206113) internal successors, (4414), 2424 states have internal predecessors, (4414), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:34,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4464 transitions. [2022-01-10 07:48:34,197 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4464 transitions. Word has length 157 [2022-01-10 07:48:34,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:34,198 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4464 transitions. [2022-01-10 07:48:34,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:34,199 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4464 transitions. [2022-01-10 07:48:34,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:34,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:34,201 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] [2022-01-10 07:48:34,217 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:34,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:34,413 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:34,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:34,414 INFO L85 PathProgramCache]: Analyzing trace with hash 2044860560, now seen corresponding path program 1 times [2022-01-10 07:48:34,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:34,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652688997] [2022-01-10 07:48:34,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:34,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:34,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:34,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:34,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:48:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:34,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:34,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:34,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:34,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:34,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:34,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652688997] [2022-01-10 07:48:34,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652688997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:34,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:34,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:34,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123462654] [2022-01-10 07:48:34,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:34,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:34,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:34,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:34,797 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:34,797 INFO L87 Difference]: Start difference. First operand 2455 states and 4464 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:35,253 INFO L93 Difference]: Finished difference Result 2771 states and 4944 transitions. [2022-01-10 07:48:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:35,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:35,263 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:35,264 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:35,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:35,267 INFO L933 BasicCegarLoop]: 4434 mSDtfsCounter, 4625 mSDsluCounter, 8463 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4643 SdHoareTripleChecker+Valid, 12897 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:35,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4643 Valid, 12897 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:35,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:35,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:35,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.821974390747625) internal successors, (4411), 2424 states have internal predecessors, (4411), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:35,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4461 transitions. [2022-01-10 07:48:35,320 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4461 transitions. Word has length 157 [2022-01-10 07:48:35,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:35,320 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4461 transitions. [2022-01-10 07:48:35,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:35,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4461 transitions. [2022-01-10 07:48:35,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:35,323 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:35,323 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] [2022-01-10 07:48:35,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-01-10 07:48:35,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:35,534 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:35,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:35,534 INFO L85 PathProgramCache]: Analyzing trace with hash 252803092, now seen corresponding path program 1 times [2022-01-10 07:48:35,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:35,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938809264] [2022-01-10 07:48:35,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:35,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:35,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:35,536 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:35,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:48:35,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:35,687 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:35,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:35,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:35,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:35,921 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:35,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938809264] [2022-01-10 07:48:35,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938809264] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:35,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:35,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:35,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164232640] [2022-01-10 07:48:35,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:35,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:35,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:35,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:35,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:35,923 INFO L87 Difference]: Start difference. First operand 2455 states and 4461 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:36,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:36,321 INFO L93 Difference]: Finished difference Result 2771 states and 4938 transitions. [2022-01-10 07:48:36,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:36,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:36,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:36,333 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:36,333 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:36,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:36,336 INFO L933 BasicCegarLoop]: 4431 mSDtfsCounter, 4618 mSDsluCounter, 8459 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4636 SdHoareTripleChecker+Valid, 12890 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:36,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4636 Valid, 12890 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:36,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:36,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:36,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8207352333746385) internal successors, (4408), 2424 states have internal predecessors, (4408), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4458 transitions. [2022-01-10 07:48:36,388 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4458 transitions. Word has length 157 [2022-01-10 07:48:36,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:36,388 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4458 transitions. [2022-01-10 07:48:36,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4458 transitions. [2022-01-10 07:48:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:36,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:36,390 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] [2022-01-10 07:48:36,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:36,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:36,602 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:36,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:36,603 INFO L85 PathProgramCache]: Analyzing trace with hash -254089064, now seen corresponding path program 1 times [2022-01-10 07:48:36,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:36,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780121411] [2022-01-10 07:48:36,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:36,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:36,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:36,605 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:36,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:48:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:36,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 422 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:36,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:37,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:37,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:37,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:37,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780121411] [2022-01-10 07:48:37,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780121411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:37,014 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:37,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:37,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630763223] [2022-01-10 07:48:37,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:37,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:37,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:37,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:37,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:37,016 INFO L87 Difference]: Start difference. First operand 2455 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:37,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:37,399 INFO L93 Difference]: Finished difference Result 2771 states and 4932 transitions. [2022-01-10 07:48:37,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:37,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:37,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:37,410 INFO L225 Difference]: With dead ends: 2771 [2022-01-10 07:48:37,410 INFO L226 Difference]: Without dead ends: 2455 [2022-01-10 07:48:37,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:37,412 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 4612 mSDsluCounter, 8455 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4630 SdHoareTripleChecker+Valid, 12883 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:37,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4630 Valid, 12883 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:37,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2455 states. [2022-01-10 07:48:37,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2455 to 2455. [2022-01-10 07:48:37,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 2421 states have (on average 1.8194960760016523) internal successors, (4405), 2424 states have internal predecessors, (4405), 26 states have call successors, (26), 7 states have call predecessors, (26), 6 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 07:48:37,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 4455 transitions. [2022-01-10 07:48:37,462 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 4455 transitions. Word has length 157 [2022-01-10 07:48:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:37,462 INFO L470 AbstractCegarLoop]: Abstraction has 2455 states and 4455 transitions. [2022-01-10 07:48:37,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:37,463 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 4455 transitions. [2022-01-10 07:48:37,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:37,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:37,464 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] [2022-01-10 07:48:37,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:37,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:37,676 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:37,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:37,676 INFO L85 PathProgramCache]: Analyzing trace with hash -683747370, now seen corresponding path program 1 times [2022-01-10 07:48:37,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:37,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [175350176] [2022-01-10 07:48:37,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:37,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:37,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:37,678 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:37,680 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:48:37,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:37,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 421 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:37,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:38,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:38,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:38,054 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:38,054 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [175350176] [2022-01-10 07:48:38,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [175350176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:38,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:38,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:38,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443006439] [2022-01-10 07:48:38,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:38,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:38,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:38,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:38,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:38,056 INFO L87 Difference]: Start difference. First operand 2455 states and 4455 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:38,607 INFO L93 Difference]: Finished difference Result 2853 states and 5054 transitions. [2022-01-10 07:48:38,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:38,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:38,619 INFO L225 Difference]: With dead ends: 2853 [2022-01-10 07:48:38,619 INFO L226 Difference]: Without dead ends: 2537 [2022-01-10 07:48:38,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:38,623 INFO L933 BasicCegarLoop]: 4425 mSDtfsCounter, 4712 mSDsluCounter, 8450 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 12875 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:38,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4730 Valid, 12875 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:38,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2537 states. [2022-01-10 07:48:38,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2537 to 2537. [2022-01-10 07:48:38,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2537 states, 2500 states have (on average 1.8052) internal successors, (4513), 2503 states have internal predecessors, (4513), 27 states have call successors, (27), 9 states have call predecessors, (27), 8 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2022-01-10 07:48:38,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2537 states to 2537 states and 4565 transitions. [2022-01-10 07:48:38,712 INFO L78 Accepts]: Start accepts. Automaton has 2537 states and 4565 transitions. Word has length 157 [2022-01-10 07:48:38,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:38,713 INFO L470 AbstractCegarLoop]: Abstraction has 2537 states and 4565 transitions. [2022-01-10 07:48:38,713 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:38,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2537 states and 4565 transitions. [2022-01-10 07:48:38,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:38,715 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:38,715 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] [2022-01-10 07:48:38,728 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:38,926 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:38,926 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:38,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:38,927 INFO L85 PathProgramCache]: Analyzing trace with hash -526807111, now seen corresponding path program 1 times [2022-01-10 07:48:38,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:38,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1011872954] [2022-01-10 07:48:38,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:38,928 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:38,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:38,929 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:38,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:48:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:39,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:39,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:39,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:39,296 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:39,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1011872954] [2022-01-10 07:48:39,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1011872954] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:39,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:39,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:39,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939557771] [2022-01-10 07:48:39,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:39,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:39,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:39,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:39,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:39,297 INFO L87 Difference]: Start difference. First operand 2537 states and 4565 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:39,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:39,844 INFO L93 Difference]: Finished difference Result 3017 states and 5274 transitions. [2022-01-10 07:48:39,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:39,845 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:39,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:39,857 INFO L225 Difference]: With dead ends: 3017 [2022-01-10 07:48:39,857 INFO L226 Difference]: Without dead ends: 2619 [2022-01-10 07:48:39,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:39,861 INFO L933 BasicCegarLoop]: 4423 mSDtfsCounter, 4705 mSDsluCounter, 8446 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4723 SdHoareTripleChecker+Valid, 12869 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:39,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4723 Valid, 12869 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:39,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2619 states. [2022-01-10 07:48:39,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2619 to 2619. [2022-01-10 07:48:39,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2579 states have (on average 1.7910042652190772) internal successors, (4619), 2582 states have internal predecessors, (4619), 28 states have call successors, (28), 11 states have call predecessors, (28), 10 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-01-10 07:48:39,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 4673 transitions. [2022-01-10 07:48:39,929 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 4673 transitions. Word has length 157 [2022-01-10 07:48:39,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:39,929 INFO L470 AbstractCegarLoop]: Abstraction has 2619 states and 4673 transitions. [2022-01-10 07:48:39,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:39,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 4673 transitions. [2022-01-10 07:48:39,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:39,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:39,931 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] [2022-01-10 07:48:39,941 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:40,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:40,142 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:40,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:40,142 INFO L85 PathProgramCache]: Analyzing trace with hash 442863029, now seen corresponding path program 1 times [2022-01-10 07:48:40,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:40,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274439551] [2022-01-10 07:48:40,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:40,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:40,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:40,144 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:40,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:48:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:40,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:40,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:40,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:40,577 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:40,578 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:40,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274439551] [2022-01-10 07:48:40,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274439551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:40,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:40,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:40,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441489045] [2022-01-10 07:48:40,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:40,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:40,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:40,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:40,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:40,579 INFO L87 Difference]: Start difference. First operand 2619 states and 4673 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:41,067 INFO L93 Difference]: Finished difference Result 3181 states and 5490 transitions. [2022-01-10 07:48:41,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:41,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:41,076 INFO L225 Difference]: With dead ends: 3181 [2022-01-10 07:48:41,076 INFO L226 Difference]: Without dead ends: 2701 [2022-01-10 07:48:41,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:41,080 INFO L933 BasicCegarLoop]: 4418 mSDtfsCounter, 4699 mSDsluCounter, 8442 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4717 SdHoareTripleChecker+Valid, 12860 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:41,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4717 Valid, 12860 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:41,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2701 states. [2022-01-10 07:48:41,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2701 to 2701. [2022-01-10 07:48:41,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2701 states, 2658 states have (on average 1.7768999247554553) internal successors, (4723), 2661 states have internal predecessors, (4723), 29 states have call successors, (29), 13 states have call predecessors, (29), 12 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 07:48:41,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2701 states to 2701 states and 4779 transitions. [2022-01-10 07:48:41,206 INFO L78 Accepts]: Start accepts. Automaton has 2701 states and 4779 transitions. Word has length 157 [2022-01-10 07:48:41,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:41,207 INFO L470 AbstractCegarLoop]: Abstraction has 2701 states and 4779 transitions. [2022-01-10 07:48:41,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:41,207 INFO L276 IsEmpty]: Start isEmpty. Operand 2701 states and 4779 transitions. [2022-01-10 07:48:41,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:41,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:41,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:41,219 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:41,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:41,419 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:41,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:41,420 INFO L85 PathProgramCache]: Analyzing trace with hash 821701912, now seen corresponding path program 1 times [2022-01-10 07:48:41,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:41,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1987839424] [2022-01-10 07:48:41,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:41,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:41,421 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:41,421 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:41,422 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:48:41,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:41,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:41,542 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:41,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:41,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:41,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:41,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1987839424] [2022-01-10 07:48:41,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1987839424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:41,775 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:41,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:41,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233656144] [2022-01-10 07:48:41,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:41,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:41,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:41,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:41,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:41,777 INFO L87 Difference]: Start difference. First operand 2701 states and 4779 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:42,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:42,253 INFO L93 Difference]: Finished difference Result 3345 states and 5702 transitions. [2022-01-10 07:48:42,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:42,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:42,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:42,260 INFO L225 Difference]: With dead ends: 3345 [2022-01-10 07:48:42,261 INFO L226 Difference]: Without dead ends: 2783 [2022-01-10 07:48:42,263 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:42,263 INFO L933 BasicCegarLoop]: 4415 mSDtfsCounter, 4692 mSDsluCounter, 8438 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4710 SdHoareTripleChecker+Valid, 12853 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:42,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4710 Valid, 12853 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:42,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2783 states. [2022-01-10 07:48:42,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2783 to 2783. [2022-01-10 07:48:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2783 states, 2737 states have (on average 1.762879064669346) internal successors, (4825), 2740 states have internal predecessors, (4825), 30 states have call successors, (30), 15 states have call predecessors, (30), 14 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-01-10 07:48:42,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2783 states to 2783 states and 4883 transitions. [2022-01-10 07:48:42,330 INFO L78 Accepts]: Start accepts. Automaton has 2783 states and 4883 transitions. Word has length 157 [2022-01-10 07:48:42,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:42,331 INFO L470 AbstractCegarLoop]: Abstraction has 2783 states and 4883 transitions. [2022-01-10 07:48:42,331 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:42,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2783 states and 4883 transitions. [2022-01-10 07:48:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:42,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:42,333 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] [2022-01-10 07:48:42,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:42,542 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:42,543 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:42,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:42,543 INFO L85 PathProgramCache]: Analyzing trace with hash 930257459, now seen corresponding path program 1 times [2022-01-10 07:48:42,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:42,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1813794084] [2022-01-10 07:48:42,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:42,544 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:42,544 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:42,545 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:42,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:48:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:42,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:42,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:42,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:42,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:42,889 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:42,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1813794084] [2022-01-10 07:48:42,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1813794084] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:42,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:42,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:42,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083858262] [2022-01-10 07:48:42,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:42,890 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:42,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:42,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:42,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:42,890 INFO L87 Difference]: Start difference. First operand 2783 states and 4883 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:43,332 INFO L93 Difference]: Finished difference Result 3509 states and 5910 transitions. [2022-01-10 07:48:43,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:43,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:43,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:43,339 INFO L225 Difference]: With dead ends: 3509 [2022-01-10 07:48:43,340 INFO L226 Difference]: Without dead ends: 2865 [2022-01-10 07:48:43,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:43,346 INFO L933 BasicCegarLoop]: 4412 mSDtfsCounter, 4685 mSDsluCounter, 8434 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4703 SdHoareTripleChecker+Valid, 12846 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:43,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4703 Valid, 12846 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:43,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2022-01-10 07:48:43,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2865. [2022-01-10 07:48:43,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2865 states, 2816 states have (on average 1.7489346590909092) internal successors, (4925), 2819 states have internal predecessors, (4925), 31 states have call successors, (31), 17 states have call predecessors, (31), 16 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 07:48:43,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2865 states to 2865 states and 4985 transitions. [2022-01-10 07:48:43,416 INFO L78 Accepts]: Start accepts. Automaton has 2865 states and 4985 transitions. Word has length 157 [2022-01-10 07:48:43,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:43,417 INFO L470 AbstractCegarLoop]: Abstraction has 2865 states and 4985 transitions. [2022-01-10 07:48:43,417 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:43,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2865 states and 4985 transitions. [2022-01-10 07:48:43,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:43,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:43,419 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] [2022-01-10 07:48:43,434 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-01-10 07:48:43,629 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:43,629 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:43,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:43,630 INFO L85 PathProgramCache]: Analyzing trace with hash -953434697, now seen corresponding path program 1 times [2022-01-10 07:48:43,630 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:43,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [37589463] [2022-01-10 07:48:43,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:43,630 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:43,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:43,631 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:43,632 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:48:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:43,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:43,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:43,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:43,977 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:43,977 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:43,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [37589463] [2022-01-10 07:48:43,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [37589463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:43,978 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:43,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:43,978 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568054155] [2022-01-10 07:48:43,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:43,978 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:43,978 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:43,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:43,979 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:43,979 INFO L87 Difference]: Start difference. First operand 2865 states and 4985 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:44,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:44,433 INFO L93 Difference]: Finished difference Result 3673 states and 6114 transitions. [2022-01-10 07:48:44,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:44,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:44,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:44,440 INFO L225 Difference]: With dead ends: 3673 [2022-01-10 07:48:44,440 INFO L226 Difference]: Without dead ends: 2947 [2022-01-10 07:48:44,443 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:44,443 INFO L933 BasicCegarLoop]: 4409 mSDtfsCounter, 4677 mSDsluCounter, 8430 mSDsCounter, 0 mSdLazyCounter, 360 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4695 SdHoareTripleChecker+Valid, 12839 SdHoareTripleChecker+Invalid, 398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 360 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:44,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4695 Valid, 12839 Invalid, 398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 360 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:44,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2947 states. [2022-01-10 07:48:44,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2947 to 2947. [2022-01-10 07:48:44,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2947 states, 2895 states have (on average 1.7350604490500863) internal successors, (5023), 2898 states have internal predecessors, (5023), 32 states have call successors, (32), 19 states have call predecessors, (32), 18 states have return successors, (30), 30 states have call predecessors, (30), 30 states have call successors, (30) [2022-01-10 07:48:44,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2947 states to 2947 states and 5085 transitions. [2022-01-10 07:48:44,519 INFO L78 Accepts]: Start accepts. Automaton has 2947 states and 5085 transitions. Word has length 157 [2022-01-10 07:48:44,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:44,519 INFO L470 AbstractCegarLoop]: Abstraction has 2947 states and 5085 transitions. [2022-01-10 07:48:44,519 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:44,519 INFO L276 IsEmpty]: Start isEmpty. Operand 2947 states and 5085 transitions. [2022-01-10 07:48:44,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:44,521 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:44,521 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] [2022-01-10 07:48:44,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:44,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:44,732 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -2095058373, now seen corresponding path program 1 times [2022-01-10 07:48:44,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:44,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1420879309] [2022-01-10 07:48:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:44,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:44,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:44,734 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:44,735 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:48:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:44,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:44,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:45,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:45,055 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:45,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1420879309] [2022-01-10 07:48:45,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1420879309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:45,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:45,055 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:45,055 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461887865] [2022-01-10 07:48:45,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:45,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:45,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:45,056 INFO L87 Difference]: Start difference. First operand 2947 states and 5085 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:45,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:45,465 INFO L93 Difference]: Finished difference Result 3837 states and 6314 transitions. [2022-01-10 07:48:45,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:45,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:45,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:45,472 INFO L225 Difference]: With dead ends: 3837 [2022-01-10 07:48:45,473 INFO L226 Difference]: Without dead ends: 3029 [2022-01-10 07:48:45,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:45,476 INFO L933 BasicCegarLoop]: 4406 mSDtfsCounter, 4670 mSDsluCounter, 8426 mSDsCounter, 0 mSdLazyCounter, 359 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4688 SdHoareTripleChecker+Valid, 12832 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 359 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:45,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4688 Valid, 12832 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 359 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:45,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3029 states. [2022-01-10 07:48:45,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3029 to 3029. [2022-01-10 07:48:45,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3029 states, 2974 states have (on average 1.7212508406186953) internal successors, (5119), 2977 states have internal predecessors, (5119), 33 states have call successors, (33), 21 states have call predecessors, (33), 20 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2022-01-10 07:48:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3029 states to 3029 states and 5183 transitions. [2022-01-10 07:48:45,556 INFO L78 Accepts]: Start accepts. Automaton has 3029 states and 5183 transitions. Word has length 157 [2022-01-10 07:48:45,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:45,557 INFO L470 AbstractCegarLoop]: Abstraction has 3029 states and 5183 transitions. [2022-01-10 07:48:45,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:45,557 INFO L276 IsEmpty]: Start isEmpty. Operand 3029 states and 5183 transitions. [2022-01-10 07:48:45,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:45,558 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:45,559 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] [2022-01-10 07:48:45,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:45,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:45,769 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:45,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:45,769 INFO L85 PathProgramCache]: Analyzing trace with hash -2099721064, now seen corresponding path program 1 times [2022-01-10 07:48:45,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:45,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [171046900] [2022-01-10 07:48:45,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:45,770 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:45,770 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:45,771 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:45,772 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:48:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:45,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:45,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:46,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:46,149 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:46,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [171046900] [2022-01-10 07:48:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [171046900] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:46,149 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:46,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919828752] [2022-01-10 07:48:46,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:46,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:46,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:46,150 INFO L87 Difference]: Start difference. First operand 3029 states and 5183 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:46,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:46,635 INFO L93 Difference]: Finished difference Result 4001 states and 6510 transitions. [2022-01-10 07:48:46,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:46,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:46,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:46,643 INFO L225 Difference]: With dead ends: 4001 [2022-01-10 07:48:46,643 INFO L226 Difference]: Without dead ends: 3111 [2022-01-10 07:48:46,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:46,647 INFO L933 BasicCegarLoop]: 4403 mSDtfsCounter, 4663 mSDsluCounter, 8422 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 12825 SdHoareTripleChecker+Invalid, 396 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:46,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4681 Valid, 12825 Invalid, 396 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:46,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3111 states. [2022-01-10 07:48:46,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3111 to 3111. [2022-01-10 07:48:46,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3111 states, 3053 states have (on average 1.7075008188666885) internal successors, (5213), 3056 states have internal predecessors, (5213), 34 states have call successors, (34), 23 states have call predecessors, (34), 22 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2022-01-10 07:48:46,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3111 states to 3111 states and 5279 transitions. [2022-01-10 07:48:46,753 INFO L78 Accepts]: Start accepts. Automaton has 3111 states and 5279 transitions. Word has length 157 [2022-01-10 07:48:46,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:46,754 INFO L470 AbstractCegarLoop]: Abstraction has 3111 states and 5279 transitions. [2022-01-10 07:48:46,754 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 3111 states and 5279 transitions. [2022-01-10 07:48:46,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:46,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:46,756 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] [2022-01-10 07:48:46,768 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:46,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:46,967 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1332194788, now seen corresponding path program 1 times [2022-01-10 07:48:46,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:46,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806590801] [2022-01-10 07:48:46,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:46,968 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:46,968 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:46,969 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:46,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:48:47,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:47,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 402 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:47,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:47,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:47,301 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:47,301 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:47,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806590801] [2022-01-10 07:48:47,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806590801] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:47,301 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:47,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:47,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871072711] [2022-01-10 07:48:47,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:47,302 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:47,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:47,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:47,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:47,303 INFO L87 Difference]: Start difference. First operand 3111 states and 5279 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:47,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:47,774 INFO L93 Difference]: Finished difference Result 4165 states and 6702 transitions. [2022-01-10 07:48:47,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:47,775 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:47,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:47,782 INFO L225 Difference]: With dead ends: 4165 [2022-01-10 07:48:47,782 INFO L226 Difference]: Without dead ends: 3193 [2022-01-10 07:48:47,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:47,786 INFO L933 BasicCegarLoop]: 4400 mSDtfsCounter, 4656 mSDsluCounter, 8418 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4674 SdHoareTripleChecker+Valid, 12818 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:47,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4674 Valid, 12818 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3193 states. [2022-01-10 07:48:47,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3193 to 3193. [2022-01-10 07:48:47,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3193 states, 3132 states have (on average 1.6938058748403575) internal successors, (5305), 3135 states have internal predecessors, (5305), 35 states have call successors, (35), 25 states have call predecessors, (35), 24 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2022-01-10 07:48:47,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3193 states to 3193 states and 5373 transitions. [2022-01-10 07:48:47,897 INFO L78 Accepts]: Start accepts. Automaton has 3193 states and 5373 transitions. Word has length 157 [2022-01-10 07:48:47,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:47,898 INFO L470 AbstractCegarLoop]: Abstraction has 3193 states and 5373 transitions. [2022-01-10 07:48:47,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:47,898 INFO L276 IsEmpty]: Start isEmpty. Operand 3193 states and 5373 transitions. [2022-01-10 07:48:47,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:47,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:47,900 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] [2022-01-10 07:48:47,909 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:48,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:48,110 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:48,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:48,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1438232649, now seen corresponding path program 1 times [2022-01-10 07:48:48,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:48,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667316782] [2022-01-10 07:48:48,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:48,111 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:48,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:48,113 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:48,139 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:48:48,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:48,258 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:48,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:48,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:48,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:48,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:48,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667316782] [2022-01-10 07:48:48,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667316782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:48,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:48,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:48,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804356588] [2022-01-10 07:48:48,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:48,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:48,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:48,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:48,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:48,477 INFO L87 Difference]: Start difference. First operand 3193 states and 5373 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:49,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:49,004 INFO L93 Difference]: Finished difference Result 4329 states and 6890 transitions. [2022-01-10 07:48:49,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:49,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:49,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:49,012 INFO L225 Difference]: With dead ends: 4329 [2022-01-10 07:48:49,012 INFO L226 Difference]: Without dead ends: 3275 [2022-01-10 07:48:49,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:48:49,017 INFO L933 BasicCegarLoop]: 4397 mSDtfsCounter, 4649 mSDsluCounter, 8414 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4667 SdHoareTripleChecker+Valid, 12811 SdHoareTripleChecker+Invalid, 394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:49,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4667 Valid, 12811 Invalid, 394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:49,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2022-01-10 07:48:49,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3275. [2022-01-10 07:48:49,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3275 states, 3211 states have (on average 1.680161943319838) internal successors, (5395), 3214 states have internal predecessors, (5395), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:48:49,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 5465 transitions. [2022-01-10 07:48:49,124 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 5465 transitions. Word has length 157 [2022-01-10 07:48:49,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:49,124 INFO L470 AbstractCegarLoop]: Abstraction has 3275 states and 5465 transitions. [2022-01-10 07:48:49,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:49,124 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 5465 transitions. [2022-01-10 07:48:49,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:49,126 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:49,126 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] [2022-01-10 07:48:49,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:49,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:49,336 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:49,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:49,336 INFO L85 PathProgramCache]: Analyzing trace with hash 913401403, now seen corresponding path program 1 times [2022-01-10 07:48:49,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:49,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988820765] [2022-01-10 07:48:49,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:49,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:49,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:49,338 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:49,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:48:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:49,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:49,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:49,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:49,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:49,725 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:49,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988820765] [2022-01-10 07:48:49,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988820765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:49,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:49,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:49,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952459651] [2022-01-10 07:48:49,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:49,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:49,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:49,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:49,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:49,727 INFO L87 Difference]: Start difference. First operand 3275 states and 5465 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:49,882 INFO L93 Difference]: Finished difference Result 4557 states and 7155 transitions. [2022-01-10 07:48:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:49,883 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:49,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:49,891 INFO L225 Difference]: With dead ends: 4557 [2022-01-10 07:48:49,892 INFO L226 Difference]: Without dead ends: 3422 [2022-01-10 07:48:49,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:49,897 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 401 mSDsluCounter, 13420 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 17842 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:49,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 17842 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:49,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3422 states. [2022-01-10 07:48:50,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3422 to 3278. [2022-01-10 07:48:50,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3278 states, 3214 states have (on average 1.6764156813939017) internal successors, (5388), 3217 states have internal predecessors, (5388), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:48:50,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3278 states to 3278 states and 5458 transitions. [2022-01-10 07:48:50,022 INFO L78 Accepts]: Start accepts. Automaton has 3278 states and 5458 transitions. Word has length 157 [2022-01-10 07:48:50,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:50,022 INFO L470 AbstractCegarLoop]: Abstraction has 3278 states and 5458 transitions. [2022-01-10 07:48:50,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:50,023 INFO L276 IsEmpty]: Start isEmpty. Operand 3278 states and 5458 transitions. [2022-01-10 07:48:50,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:50,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:50,024 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] [2022-01-10 07:48:50,037 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:50,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:50,235 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:50,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:50,236 INFO L85 PathProgramCache]: Analyzing trace with hash 290119801, now seen corresponding path program 1 times [2022-01-10 07:48:50,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:50,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [204301080] [2022-01-10 07:48:50,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:50,236 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:50,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:50,237 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:50,239 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:48:50,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:50,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 396 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:50,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:50,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:50,600 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:50,600 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:50,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [204301080] [2022-01-10 07:48:50,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [204301080] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:50,600 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:50,600 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:50,600 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261032181] [2022-01-10 07:48:50,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:50,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:50,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:50,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:50,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:50,601 INFO L87 Difference]: Start difference. First operand 3278 states and 5458 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:50,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:50,768 INFO L93 Difference]: Finished difference Result 4549 states and 7123 transitions. [2022-01-10 07:48:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:50,776 INFO L225 Difference]: With dead ends: 4549 [2022-01-10 07:48:50,776 INFO L226 Difference]: Without dead ends: 3411 [2022-01-10 07:48:50,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:50,783 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 362 mSDsluCounter, 13405 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 17827 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:50,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 17827 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:50,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3411 states. [2022-01-10 07:48:50,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3411 to 3281. [2022-01-10 07:48:50,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3281 states, 3217 states have (on average 1.6726764065899906) internal successors, (5381), 3220 states have internal predecessors, (5381), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:48:50,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3281 states to 3281 states and 5451 transitions. [2022-01-10 07:48:50,901 INFO L78 Accepts]: Start accepts. Automaton has 3281 states and 5451 transitions. Word has length 157 [2022-01-10 07:48:50,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:50,902 INFO L470 AbstractCegarLoop]: Abstraction has 3281 states and 5451 transitions. [2022-01-10 07:48:50,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:50,902 INFO L276 IsEmpty]: Start isEmpty. Operand 3281 states and 5451 transitions. [2022-01-10 07:48:50,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:50,904 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:50,904 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] [2022-01-10 07:48:50,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:51,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:51,115 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:51,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:51,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2107350729, now seen corresponding path program 1 times [2022-01-10 07:48:51,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:51,117 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1927312913] [2022-01-10 07:48:51,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:51,117 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:51,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:51,118 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:51,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:48:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:51,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:51,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:51,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:51,507 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:51,507 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:51,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1927312913] [2022-01-10 07:48:51,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1927312913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:51,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:51,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:51,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659567264] [2022-01-10 07:48:51,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:51,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:51,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:51,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:51,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:51,510 INFO L87 Difference]: Start difference. First operand 3281 states and 5451 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:51,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:51,654 INFO L93 Difference]: Finished difference Result 4541 states and 7091 transitions. [2022-01-10 07:48:51,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:51,655 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:51,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:51,663 INFO L225 Difference]: With dead ends: 4541 [2022-01-10 07:48:51,663 INFO L226 Difference]: Without dead ends: 3400 [2022-01-10 07:48:51,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:51,668 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 323 mSDsluCounter, 13390 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 17812 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:51,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 17812 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:51,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-01-10 07:48:51,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3284. [2022-01-10 07:48:51,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3284 states, 3220 states have (on average 1.668944099378882) internal successors, (5374), 3223 states have internal predecessors, (5374), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:48:51,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3284 states to 3284 states and 5444 transitions. [2022-01-10 07:48:51,795 INFO L78 Accepts]: Start accepts. Automaton has 3284 states and 5444 transitions. Word has length 157 [2022-01-10 07:48:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:51,795 INFO L470 AbstractCegarLoop]: Abstraction has 3284 states and 5444 transitions. [2022-01-10 07:48:51,796 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 3284 states and 5444 transitions. [2022-01-10 07:48:51,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:51,798 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:51,798 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] [2022-01-10 07:48:51,811 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:52,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,009 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:52,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:52,010 INFO L85 PathProgramCache]: Analyzing trace with hash 568641653, now seen corresponding path program 1 times [2022-01-10 07:48:52,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:52,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146744207] [2022-01-10 07:48:52,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:52,010 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:52,011 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:52,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:48:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:52,128 INFO L263 TraceCheckSpWp]: Trace formula consists of 394 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:52,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:52,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:52,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:52,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:52,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146744207] [2022-01-10 07:48:52,315 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146744207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:52,315 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:52,315 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:52,315 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580695205] [2022-01-10 07:48:52,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:52,315 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:52,315 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:52,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:52,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:52,316 INFO L87 Difference]: Start difference. First operand 3284 states and 5444 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:52,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:52,457 INFO L93 Difference]: Finished difference Result 4533 states and 7059 transitions. [2022-01-10 07:48:52,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:52,457 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:52,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:52,465 INFO L225 Difference]: With dead ends: 4533 [2022-01-10 07:48:52,465 INFO L226 Difference]: Without dead ends: 3389 [2022-01-10 07:48:52,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:52,470 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 284 mSDsluCounter, 13375 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 17797 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:52,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 17797 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:52,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3389 states. [2022-01-10 07:48:52,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3389 to 3287. [2022-01-10 07:48:52,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3287 states, 3223 states have (on average 1.6652187403040646) internal successors, (5367), 3226 states have internal predecessors, (5367), 36 states have call successors, (36), 27 states have call predecessors, (36), 26 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-01-10 07:48:52,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3287 states to 3287 states and 5437 transitions. [2022-01-10 07:48:52,587 INFO L78 Accepts]: Start accepts. Automaton has 3287 states and 5437 transitions. Word has length 157 [2022-01-10 07:48:52,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:52,587 INFO L470 AbstractCegarLoop]: Abstraction has 3287 states and 5437 transitions. [2022-01-10 07:48:52,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:52,587 INFO L276 IsEmpty]: Start isEmpty. Operand 3287 states and 5437 transitions. [2022-01-10 07:48:52,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:52,588 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:52,588 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] [2022-01-10 07:48:52,598 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:52,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,798 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash -426052045, now seen corresponding path program 1 times [2022-01-10 07:48:52,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [459757628] [2022-01-10 07:48:52,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:52,799 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:52,800 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:52,801 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:48:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:52,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:52,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:53,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:53,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:53,185 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:53,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [459757628] [2022-01-10 07:48:53,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [459757628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:53,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:53,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:48:53,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749509362] [2022-01-10 07:48:53,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:53,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:53,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:53,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:53,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:53,187 INFO L87 Difference]: Start difference. First operand 3287 states and 5437 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:53,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:53,320 INFO L93 Difference]: Finished difference Result 5483 states and 8224 transitions. [2022-01-10 07:48:53,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:53,320 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:53,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:53,329 INFO L225 Difference]: With dead ends: 5483 [2022-01-10 07:48:53,329 INFO L226 Difference]: Without dead ends: 4336 [2022-01-10 07:48:53,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:53,334 INFO L933 BasicCegarLoop]: 4488 mSDtfsCounter, 4335 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4335 SdHoareTripleChecker+Valid, 4914 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:53,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4335 Valid, 4914 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:53,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4336 states. [2022-01-10 07:48:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4336 to 4330. [2022-01-10 07:48:53,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4330 states, 4214 states have (on average 1.5690555291884196) internal successors, (6612), 4217 states have internal predecessors, (6612), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4330 states to 4330 states and 6738 transitions. [2022-01-10 07:48:53,571 INFO L78 Accepts]: Start accepts. Automaton has 4330 states and 6738 transitions. Word has length 157 [2022-01-10 07:48:53,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:53,571 INFO L470 AbstractCegarLoop]: Abstraction has 4330 states and 6738 transitions. [2022-01-10 07:48:53,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:53,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4330 states and 6738 transitions. [2022-01-10 07:48:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:53,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:53,573 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] [2022-01-10 07:48:53,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:53,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:53,784 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:53,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:53,784 INFO L85 PathProgramCache]: Analyzing trace with hash 590875858, now seen corresponding path program 1 times [2022-01-10 07:48:53,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:53,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2065543621] [2022-01-10 07:48:53,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:53,785 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:53,787 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:53,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:48:53,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:53,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:53,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:54,182 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:54,182 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2065543621] [2022-01-10 07:48:54,182 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2065543621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:54,182 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:54,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:54,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513207196] [2022-01-10 07:48:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:54,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:54,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:54,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:54,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:54,184 INFO L87 Difference]: Start difference. First operand 4330 states and 6738 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:54,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:54,446 INFO L93 Difference]: Finished difference Result 7367 states and 10625 transitions. [2022-01-10 07:48:54,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:54,447 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:54,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:54,458 INFO L225 Difference]: With dead ends: 7367 [2022-01-10 07:48:54,458 INFO L226 Difference]: Without dead ends: 5177 [2022-01-10 07:48:54,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:54,466 INFO L933 BasicCegarLoop]: 4428 mSDtfsCounter, 209 mSDsluCounter, 13377 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 17805 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:54,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 17805 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:54,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5177 states. [2022-01-10 07:48:54,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5177 to 4363. [2022-01-10 07:48:54,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4363 states, 4247 states have (on average 1.5622792559453733) internal successors, (6635), 4250 states have internal predecessors, (6635), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:54,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4363 states to 4363 states and 6761 transitions. [2022-01-10 07:48:54,682 INFO L78 Accepts]: Start accepts. Automaton has 4363 states and 6761 transitions. Word has length 157 [2022-01-10 07:48:54,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:54,682 INFO L470 AbstractCegarLoop]: Abstraction has 4363 states and 6761 transitions. [2022-01-10 07:48:54,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:54,683 INFO L276 IsEmpty]: Start isEmpty. Operand 4363 states and 6761 transitions. [2022-01-10 07:48:54,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:54,684 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:54,684 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] [2022-01-10 07:48:54,696 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:54,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:54,895 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:54,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:54,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1486461040, now seen corresponding path program 1 times [2022-01-10 07:48:54,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:54,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [640325171] [2022-01-10 07:48:54,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:54,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:54,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:54,897 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:54,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:48:55,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:55,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:55,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:55,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:55,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:55,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [640325171] [2022-01-10 07:48:55,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [640325171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:55,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:55,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:55,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306664633] [2022-01-10 07:48:55,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:55,230 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:55,230 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:55,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:55,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:55,230 INFO L87 Difference]: Start difference. First operand 4363 states and 6761 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:55,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:55,419 INFO L93 Difference]: Finished difference Result 6649 states and 9659 transitions. [2022-01-10 07:48:55,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:55,419 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:55,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:55,428 INFO L225 Difference]: With dead ends: 6649 [2022-01-10 07:48:55,429 INFO L226 Difference]: Without dead ends: 4426 [2022-01-10 07:48:55,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:55,437 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 166 mSDsluCounter, 13325 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 17747 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:55,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 17747 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:55,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4426 states. [2022-01-10 07:48:55,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4426 to 4366. [2022-01-10 07:48:55,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4366 states, 4250 states have (on average 1.5571764705882354) internal successors, (6618), 4253 states have internal predecessors, (6618), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:55,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4366 states to 4366 states and 6744 transitions. [2022-01-10 07:48:55,656 INFO L78 Accepts]: Start accepts. Automaton has 4366 states and 6744 transitions. Word has length 157 [2022-01-10 07:48:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:55,656 INFO L470 AbstractCegarLoop]: Abstraction has 4366 states and 6744 transitions. [2022-01-10 07:48:55,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:55,656 INFO L276 IsEmpty]: Start isEmpty. Operand 4366 states and 6744 transitions. [2022-01-10 07:48:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:55,658 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:55,658 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] [2022-01-10 07:48:55,671 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 07:48:55,869 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:55,869 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:55,869 INFO L85 PathProgramCache]: Analyzing trace with hash 421996750, now seen corresponding path program 1 times [2022-01-10 07:48:55,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:55,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [822301002] [2022-01-10 07:48:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:55,870 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:55,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:55,871 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:55,872 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:48:55,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:55,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:55,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:56,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:56,177 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:56,177 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:56,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [822301002] [2022-01-10 07:48:56,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [822301002] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:56,177 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:56,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:56,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919015388] [2022-01-10 07:48:56,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:56,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:56,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:56,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:56,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:56,179 INFO L87 Difference]: Start difference. First operand 4366 states and 6744 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:56,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:56,417 INFO L93 Difference]: Finished difference Result 6690 states and 9669 transitions. [2022-01-10 07:48:56,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:56,417 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:56,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:56,423 INFO L225 Difference]: With dead ends: 6690 [2022-01-10 07:48:56,423 INFO L226 Difference]: Without dead ends: 4464 [2022-01-10 07:48:56,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:56,427 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 127 mSDsluCounter, 13310 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 17732 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:56,427 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 17732 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:56,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4464 states. [2022-01-10 07:48:56,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4464 to 4372. [2022-01-10 07:48:56,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4372 states, 4256 states have (on average 1.5519266917293233) internal successors, (6605), 4259 states have internal predecessors, (6605), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:56,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4372 states to 4372 states and 6731 transitions. [2022-01-10 07:48:56,641 INFO L78 Accepts]: Start accepts. Automaton has 4372 states and 6731 transitions. Word has length 157 [2022-01-10 07:48:56,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:56,641 INFO L470 AbstractCegarLoop]: Abstraction has 4372 states and 6731 transitions. [2022-01-10 07:48:56,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:56,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4372 states and 6731 transitions. [2022-01-10 07:48:56,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:56,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:56,643 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] [2022-01-10 07:48:56,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:56,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:56,853 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:56,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:56,853 INFO L85 PathProgramCache]: Analyzing trace with hash 367603852, now seen corresponding path program 1 times [2022-01-10 07:48:56,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:56,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [740042469] [2022-01-10 07:48:56,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:56,855 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:56,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:56,856 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:56,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 07:48:56,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:56,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 389 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:56,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:57,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:57,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:57,160 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:57,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [740042469] [2022-01-10 07:48:57,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [740042469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:57,161 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:57,161 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:57,161 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292193790] [2022-01-10 07:48:57,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:57,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:57,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:57,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:57,162 INFO L87 Difference]: Start difference. First operand 4372 states and 6731 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:57,336 INFO L93 Difference]: Finished difference Result 6674 states and 9607 transitions. [2022-01-10 07:48:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:57,342 INFO L225 Difference]: With dead ends: 6674 [2022-01-10 07:48:57,342 INFO L226 Difference]: Without dead ends: 4442 [2022-01-10 07:48:57,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:57,346 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 88 mSDsluCounter, 13295 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 17717 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:57,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 17717 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:57,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4442 states. [2022-01-10 07:48:57,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4442 to 4378. [2022-01-10 07:48:57,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4378 states, 4262 states have (on average 1.5466916940403566) internal successors, (6592), 4265 states have internal predecessors, (6592), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:57,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4378 states to 4378 states and 6718 transitions. [2022-01-10 07:48:57,570 INFO L78 Accepts]: Start accepts. Automaton has 4378 states and 6718 transitions. Word has length 157 [2022-01-10 07:48:57,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:57,570 INFO L470 AbstractCegarLoop]: Abstraction has 4378 states and 6718 transitions. [2022-01-10 07:48:57,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:57,570 INFO L276 IsEmpty]: Start isEmpty. Operand 4378 states and 6718 transitions. [2022-01-10 07:48:57,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:57,572 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:57,572 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] [2022-01-10 07:48:57,585 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 07:48:57,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:57,783 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:57,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:57,784 INFO L85 PathProgramCache]: Analyzing trace with hash 801332938, now seen corresponding path program 1 times [2022-01-10 07:48:57,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:57,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [486180327] [2022-01-10 07:48:57,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:57,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:57,785 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:57,785 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:57,788 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 07:48:57,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:57,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:57,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:58,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:58,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:58,095 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:58,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [486180327] [2022-01-10 07:48:58,096 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [486180327] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:58,096 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:58,096 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:58,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172787831] [2022-01-10 07:48:58,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:58,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:58,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:58,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:58,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:58,097 INFO L87 Difference]: Start difference. First operand 4378 states and 6718 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:58,337 INFO L93 Difference]: Finished difference Result 6658 states and 9545 transitions. [2022-01-10 07:48:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:58,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:58,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:58,343 INFO L225 Difference]: With dead ends: 6658 [2022-01-10 07:48:58,343 INFO L226 Difference]: Without dead ends: 4420 [2022-01-10 07:48:58,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:58,346 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 49 mSDsluCounter, 13280 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 17702 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:58,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 17702 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:58,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4420 states. [2022-01-10 07:48:58,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4420 to 4384. [2022-01-10 07:48:58,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4384 states, 4268 states have (on average 1.5414714151827553) internal successors, (6579), 4271 states have internal predecessors, (6579), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:58,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4384 states to 4384 states and 6705 transitions. [2022-01-10 07:48:58,572 INFO L78 Accepts]: Start accepts. Automaton has 4384 states and 6705 transitions. Word has length 157 [2022-01-10 07:48:58,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:58,572 INFO L470 AbstractCegarLoop]: Abstraction has 4384 states and 6705 transitions. [2022-01-10 07:48:58,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:58,572 INFO L276 IsEmpty]: Start isEmpty. Operand 4384 states and 6705 transitions. [2022-01-10 07:48:58,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:58,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:58,573 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] [2022-01-10 07:48:58,583 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 07:48:58,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:48:58,783 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:58,784 INFO L85 PathProgramCache]: Analyzing trace with hash -1955294328, now seen corresponding path program 1 times [2022-01-10 07:48:58,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [926139968] [2022-01-10 07:48:58,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:58,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:58,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:58,785 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:48:58,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 07:48:58,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:58,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:58,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:59,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:59,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:59,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:59,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [926139968] [2022-01-10 07:48:59,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [926139968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:59,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:59,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:48:59,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714707815] [2022-01-10 07:48:59,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:59,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:59,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:59,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:59,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:59,099 INFO L87 Difference]: Start difference. First operand 4384 states and 6705 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:59,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:59,276 INFO L93 Difference]: Finished difference Result 6642 states and 9483 transitions. [2022-01-10 07:48:59,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:59,277 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:48:59,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:59,284 INFO L225 Difference]: With dead ends: 6642 [2022-01-10 07:48:59,284 INFO L226 Difference]: Without dead ends: 4398 [2022-01-10 07:48:59,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:48:59,291 INFO L933 BasicCegarLoop]: 4422 mSDtfsCounter, 10 mSDsluCounter, 13265 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 17687 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:59,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 17687 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:59,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4398 states. [2022-01-10 07:48:59,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4398 to 4390. [2022-01-10 07:48:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4390 states, 4274 states have (on average 1.5362657931679926) internal successors, (6566), 4277 states have internal predecessors, (6566), 64 states have call successors, (64), 51 states have call predecessors, (64), 50 states have return successors, (62), 62 states have call predecessors, (62), 62 states have call successors, (62) [2022-01-10 07:48:59,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4390 states to 4390 states and 6692 transitions. [2022-01-10 07:48:59,473 INFO L78 Accepts]: Start accepts. Automaton has 4390 states and 6692 transitions. Word has length 157 [2022-01-10 07:48:59,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:59,473 INFO L470 AbstractCegarLoop]: Abstraction has 4390 states and 6692 transitions. [2022-01-10 07:48:59,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:48:59,474 INFO L276 IsEmpty]: Start isEmpty. Operand 4390 states and 6692 transitions. [2022-01-10 07:48:59,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:48:59,475 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:59,475 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] [2022-01-10 07:48:59,483 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 07:48:59,675 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 07:48:59,676 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:59,676 INFO L85 PathProgramCache]: Analyzing trace with hash -27021626, now seen corresponding path program 1 times [2022-01-10 07:48:59,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:59,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444292372] [2022-01-10 07:48:59,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:59,677 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:59,677 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:59,678 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 07:48:59,678 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 07:48:59,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:59,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:48:59,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:00,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:00,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:00,111 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:00,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444292372] [2022-01-10 07:49:00,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444292372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:00,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:00,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:00,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554135279] [2022-01-10 07:49:00,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:00,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:00,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:00,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:00,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:00,113 INFO L87 Difference]: Start difference. First operand 4390 states and 6692 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:00,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:00,964 INFO L93 Difference]: Finished difference Result 8974 states and 12190 transitions. [2022-01-10 07:49:00,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:00,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:49:00,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:00,973 INFO L225 Difference]: With dead ends: 8974 [2022-01-10 07:49:00,973 INFO L226 Difference]: Without dead ends: 6723 [2022-01-10 07:49:00,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:00,976 INFO L933 BasicCegarLoop]: 4447 mSDtfsCounter, 4663 mSDsluCounter, 8741 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4680 SdHoareTripleChecker+Valid, 13188 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:00,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4680 Valid, 13188 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:49:00,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6723 states. [2022-01-10 07:49:01,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6723 to 6673. [2022-01-10 07:49:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 6449 states have (on average 1.4239416963870368) internal successors, (9183), 6454 states have internal predecessors, (9183), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:49:01,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 9423 transitions. [2022-01-10 07:49:01,291 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 9423 transitions. Word has length 157 [2022-01-10 07:49:01,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:01,292 INFO L470 AbstractCegarLoop]: Abstraction has 6673 states and 9423 transitions. [2022-01-10 07:49:01,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:01,292 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 9423 transitions. [2022-01-10 07:49:01,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:49:01,293 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:01,293 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] [2022-01-10 07:49:01,306 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 07:49:01,504 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 07:49:01,505 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:01,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:01,505 INFO L85 PathProgramCache]: Analyzing trace with hash 221124868, now seen corresponding path program 1 times [2022-01-10 07:49:01,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:01,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1265810849] [2022-01-10 07:49:01,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:01,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:01,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:01,507 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 07:49:01,507 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 07:49:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:01,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:01,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:01,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:01,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:01,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:01,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1265810849] [2022-01-10 07:49:01,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1265810849] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:01,875 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:01,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:01,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44664029] [2022-01-10 07:49:01,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:01,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:01,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:01,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:01,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:01,876 INFO L87 Difference]: Start difference. First operand 6673 states and 9423 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:02,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:02,644 INFO L93 Difference]: Finished difference Result 11207 states and 14870 transitions. [2022-01-10 07:49:02,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:02,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:49:02,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:02,659 INFO L225 Difference]: With dead ends: 11207 [2022-01-10 07:49:02,659 INFO L226 Difference]: Without dead ends: 6673 [2022-01-10 07:49:02,667 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:49:02,667 INFO L933 BasicCegarLoop]: 4395 mSDtfsCounter, 4468 mSDsluCounter, 8411 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4485 SdHoareTripleChecker+Valid, 12806 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:02,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4485 Valid, 12806 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:02,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6673 states. [2022-01-10 07:49:03,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6673 to 6673. [2022-01-10 07:49:03,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6673 states, 6449 states have (on average 1.4217708171809582) internal successors, (9169), 6454 states have internal predecessors, (9169), 120 states have call successors, (120), 101 states have call predecessors, (120), 102 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:49:03,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6673 states to 6673 states and 9409 transitions. [2022-01-10 07:49:03,077 INFO L78 Accepts]: Start accepts. Automaton has 6673 states and 9409 transitions. Word has length 157 [2022-01-10 07:49:03,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:03,077 INFO L470 AbstractCegarLoop]: Abstraction has 6673 states and 9409 transitions. [2022-01-10 07:49:03,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:03,078 INFO L276 IsEmpty]: Start isEmpty. Operand 6673 states and 9409 transitions. [2022-01-10 07:49:03,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:49:03,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:03,079 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] [2022-01-10 07:49:03,087 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 07:49:03,279 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 07:49:03,279 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:03,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:03,280 INFO L85 PathProgramCache]: Analyzing trace with hash -2022858430, now seen corresponding path program 1 times [2022-01-10 07:49:03,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:03,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1115845024] [2022-01-10 07:49:03,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:03,281 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:03,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:03,282 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 07:49:03,282 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 07:49:03,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:03,388 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:03,390 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:03,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:03,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:03,631 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:03,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1115845024] [2022-01-10 07:49:03,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1115845024] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:03,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:03,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:03,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054413025] [2022-01-10 07:49:03,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:03,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:03,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:03,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:03,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:03,632 INFO L87 Difference]: Start difference. First operand 6673 states and 9409 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:04,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:04,363 INFO L93 Difference]: Finished difference Result 11539 states and 15251 transitions. [2022-01-10 07:49:04,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:04,364 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 157 [2022-01-10 07:49:04,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:04,374 INFO L225 Difference]: With dead ends: 11539 [2022-01-10 07:49:04,375 INFO L226 Difference]: Without dead ends: 7005 [2022-01-10 07:49:04,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:49:04,382 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4587 mSDsluCounter, 8406 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4604 SdHoareTripleChecker+Valid, 12843 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:04,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4604 Valid, 12843 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:04,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7005 states. [2022-01-10 07:49:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7005 to 6927. [2022-01-10 07:49:04,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6927 states, 6699 states have (on average 1.4048365427675773) internal successors, (9411), 6704 states have internal predecessors, (9411), 120 states have call successors, (120), 105 states have call predecessors, (120), 106 states have return successors, (120), 118 states have call predecessors, (120), 118 states have call successors, (120) [2022-01-10 07:49:04,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6927 states to 6927 states and 9651 transitions. [2022-01-10 07:49:04,792 INFO L78 Accepts]: Start accepts. Automaton has 6927 states and 9651 transitions. Word has length 157 [2022-01-10 07:49:04,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:04,792 INFO L470 AbstractCegarLoop]: Abstraction has 6927 states and 9651 transitions. [2022-01-10 07:49:04,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:49:04,792 INFO L276 IsEmpty]: Start isEmpty. Operand 6927 states and 9651 transitions. [2022-01-10 07:49:04,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2022-01-10 07:49:04,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:04,793 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] [2022-01-10 07:49:04,801 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 07:49:04,994 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 07:49:04,995 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:04,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1960818816, now seen corresponding path program 1 times [2022-01-10 07:49:04,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:04,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2078356696] [2022-01-10 07:49:04,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:04,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:04,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:04,997 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 07:49:04,998 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 07:49:05,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:05,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:05,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:05,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:05,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:05,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:05,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2078356696] [2022-01-10 07:49:05,350 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2078356696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:05,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:05,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:05,350 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464051493] [2022-01-10 07:49:05,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:05,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:05,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:05,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:05,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:05,351 INFO L87 Difference]: Start difference. First operand 6927 states and 9651 transitions. Second operand has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:05,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:05,970 INFO L93 Difference]: Finished difference Result 16406 states and 20933 transitions. [2022-01-10 07:49:05,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:05,971 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 157 [2022-01-10 07:49:05,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:05,991 INFO L225 Difference]: With dead ends: 16406 [2022-01-10 07:49:05,991 INFO L226 Difference]: Without dead ends: 11619 [2022-01-10 07:49:06,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:06,059 INFO L933 BasicCegarLoop]: 4437 mSDtfsCounter, 4243 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4243 SdHoareTripleChecker+Valid, 4857 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:06,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4243 Valid, 4857 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:06,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11619 states. [2022-01-10 07:49:06,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11619 to 11615. [2022-01-10 07:49:06,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11615 states, 11167 states have (on average 1.3125279842392765) internal successors, (14657), 11178 states have internal predecessors, (14657), 234 states have call successors, (234), 209 states have call predecessors, (234), 212 states have return successors, (236), 228 states have call predecessors, (236), 232 states have call successors, (236) [2022-01-10 07:49:06,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11615 states to 11615 states and 15127 transitions. [2022-01-10 07:49:06,697 INFO L78 Accepts]: Start accepts. Automaton has 11615 states and 15127 transitions. Word has length 157 [2022-01-10 07:49:06,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:06,697 INFO L470 AbstractCegarLoop]: Abstraction has 11615 states and 15127 transitions. [2022-01-10 07:49:06,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.666666666666664) internal successors, (146), 2 states have internal predecessors, (146), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:49:06,698 INFO L276 IsEmpty]: Start isEmpty. Operand 11615 states and 15127 transitions.