/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.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:48:29,417 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:48:29,419 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:48:29,440 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:48:29,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:48:29,441 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:48:29,442 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:48:29,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:48:29,444 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:48:29,444 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:48:29,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:48:29,445 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:48:29,446 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:48:29,446 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:48:29,447 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:48:29,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:48:29,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:48:29,448 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:48:29,449 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:48:29,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:48:29,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:48:29,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:48:29,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:48:29,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:48:29,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 07:48:29,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:48:29,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:48:29,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:48:29,466 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:48:29,467 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:48:29,467 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:48:29,468 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:48:29,468 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:48:29,468 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:48:29,469 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:48:29,469 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:48:29,472 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 07:48:29,501 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:48:29,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:48:29,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:48:29,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:48:29,501 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:48:29,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:48:29,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:48:29,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:48:29,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:48:29,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:29,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:48:29,504 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:48:29,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:48:29,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:48:29,697 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:48:29,699 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:48:29,699 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:48:29,701 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:48:29,702 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label46+token_ring.13.cil-1.c [2022-01-10 07:48:29,744 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a395bffbd/08f2fbe6266c44cb845e4b9ed3c1d865/FLAGafd6f2c00 [2022-01-10 07:48:30,441 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:48:30,442 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label46+token_ring.13.cil-1.c [2022-01-10 07:48:30,478 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a395bffbd/08f2fbe6266c44cb845e4b9ed3c1d865/FLAGafd6f2c00 [2022-01-10 07:48:30,775 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a395bffbd/08f2fbe6266c44cb845e4b9ed3c1d865 [2022-01-10 07:48:30,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:48:30,779 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:48:30,781 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:30,781 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:48:30,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:48:30,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:30" (1/1) ... [2022-01-10 07:48:30,784 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@668b6510 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:30, skipping insertion in model container [2022-01-10 07:48:30,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:48:30" (1/1) ... [2022-01-10 07:48:30,789 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:48:30,939 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:48:32,160 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.13.cil-1.c[382357,382370] [2022-01-10 07:48:32,177 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.13.cil-1.c[383339,383352] [2022-01-10 07:48:32,387 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:32,396 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:48:32,977 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.13.cil-1.c[382357,382370] [2022-01-10 07:48:32,980 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.13.cil-1.c[383339,383352] [2022-01-10 07:48:33,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:48:33,050 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:48:33,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33 WrapperNode [2022-01-10 07:48:33,050 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:48:33,051 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:33,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:48:33,051 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:48:33,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,114 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,370 INFO L137 Inliner]: procedures = 71, calls = 81, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 13217 [2022-01-10 07:48:33,371 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:48:33,371 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:48:33,371 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:48:33,371 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:48:33,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,424 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,424 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,621 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,658 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,714 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,806 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:48:33,807 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:48:33,807 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:48:33,807 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:48:33,809 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (1/1) ... [2022-01-10 07:48:33,820 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:48:33,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:48:33,837 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 07:48:33,850 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 07:48:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:48:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:48:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:48:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:48:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:48:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:48:33,988 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:48:33,989 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:48:40,620 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:48:40,638 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:48:40,639 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 07:48:40,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:40 BoogieIcfgContainer [2022-01-10 07:48:40,642 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:48:40,644 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:48:40,644 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:48:40,647 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:48:40,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:48:30" (1/3) ... [2022-01-10 07:48:40,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e70652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:40, skipping insertion in model container [2022-01-10 07:48:40,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:48:33" (2/3) ... [2022-01-10 07:48:40,648 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e70652a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:48:40, skipping insertion in model container [2022-01-10 07:48:40,648 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:48:40" (3/3) ... [2022-01-10 07:48:40,651 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label46+token_ring.13.cil-1.c [2022-01-10 07:48:40,654 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:48:40,654 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:48:40,698 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:48:40,703 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 07:48:40,703 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:48:40,744 INFO L276 IsEmpty]: Start isEmpty. Operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) [2022-01-10 07:48:40,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:40,755 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:40,755 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:40,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:40,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -384467650, now seen corresponding path program 1 times [2022-01-10 07:48:40,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:40,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31932015] [2022-01-10 07:48:40,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:40,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:40,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:40,770 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 07:48:40,770 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 07:48:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:40,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:40,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:41,336 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 07:48:41,336 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:41,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:41,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31932015] [2022-01-10 07:48:41,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31932015] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:41,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:41,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:48:41,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049183055] [2022-01-10 07:48:41,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:41,342 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:41,342 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:41,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:41,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:41,364 INFO L87 Difference]: Start difference. First operand has 2598 states, 2559 states have (on average 1.842125830402501) internal successors, (4714), 2564 states have internal predecessors, (4714), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 28 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:41,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:41,470 INFO L93 Difference]: Finished difference Result 5187 states and 9529 transitions. [2022-01-10 07:48:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:41,473 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:41,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:41,495 INFO L225 Difference]: With dead ends: 5187 [2022-01-10 07:48:41,495 INFO L226 Difference]: Without dead ends: 2530 [2022-01-10 07:48:41,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:41,506 INFO L933 BasicCegarLoop]: 4673 mSDtfsCounter, 642 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 8695 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 07:48:41,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [642 Valid, 8695 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:41,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-01-10 07:48:41,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2530. [2022-01-10 07:48:41,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.824709185720016) internal successors, (4549), 2496 states have internal predecessors, (4549), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 07:48:41,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4605 transitions. [2022-01-10 07:48:41,592 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4605 transitions. Word has length 190 [2022-01-10 07:48:41,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:41,593 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4605 transitions. [2022-01-10 07:48:41,593 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:41,594 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4605 transitions. [2022-01-10 07:48:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:41,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:41,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:41,612 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:41,812 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 07:48:41,812 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:41,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 431579580, now seen corresponding path program 1 times [2022-01-10 07:48:41,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:41,814 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546134364] [2022-01-10 07:48:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:41,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:41,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:41,815 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 07:48:41,816 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 07:48:41,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:41,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:48:41,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:42,199 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 07:48:42,199 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:42,199 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:42,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546134364] [2022-01-10 07:48:42,200 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1546134364] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:42,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:42,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:48:42,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562013783] [2022-01-10 07:48:42,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:42,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:48:42,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:42,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:48:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:42,207 INFO L87 Difference]: Start difference. First operand 2530 states and 4605 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:42,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:42,256 INFO L93 Difference]: Finished difference Result 2922 states and 5223 transitions. [2022-01-10 07:48:42,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:48:42,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:42,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:42,269 INFO L225 Difference]: With dead ends: 2922 [2022-01-10 07:48:42,269 INFO L226 Difference]: Without dead ends: 2530 [2022-01-10 07:48:42,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:48:42,271 INFO L933 BasicCegarLoop]: 4603 mSDtfsCounter, 628 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 628 SdHoareTripleChecker+Valid, 8561 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 07:48:42,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [628 Valid, 8561 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:48:42,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2530 states. [2022-01-10 07:48:42,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2530 to 2530. [2022-01-10 07:48:42,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2530 states, 2493 states have (on average 1.8243080625752106) internal successors, (4548), 2496 states have internal predecessors, (4548), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 07:48:42,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2530 states to 2530 states and 4604 transitions. [2022-01-10 07:48:42,330 INFO L78 Accepts]: Start accepts. Automaton has 2530 states and 4604 transitions. Word has length 190 [2022-01-10 07:48:42,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:42,330 INFO L470 AbstractCegarLoop]: Abstraction has 2530 states and 4604 transitions. [2022-01-10 07:48:42,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:42,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2530 states and 4604 transitions. [2022-01-10 07:48:42,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:42,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:42,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:42,342 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 07:48:42,540 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 07:48:42,540 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash -217013190, now seen corresponding path program 1 times [2022-01-10 07:48:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1106100936] [2022-01-10 07:48:42,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:42,542 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:42,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:42,543 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 07:48:42,543 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 07:48:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:42,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 536 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:42,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:42,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:42,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:42,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1106100936] [2022-01-10 07:48:42,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1106100936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:42,915 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:42,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:42,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451729222] [2022-01-10 07:48:42,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:42,918 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:42,918 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:42,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:42,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:42,919 INFO L87 Difference]: Start difference. First operand 2530 states and 4604 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:43,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:43,617 INFO L93 Difference]: Finished difference Result 3358 states and 5932 transitions. [2022-01-10 07:48:43,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:48:43,618 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:43,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:43,628 INFO L225 Difference]: With dead ends: 3358 [2022-01-10 07:48:43,628 INFO L226 Difference]: Without dead ends: 2970 [2022-01-10 07:48:43,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:43,633 INFO L933 BasicCegarLoop]: 4658 mSDtfsCounter, 5203 mSDsluCounter, 9208 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5224 SdHoareTripleChecker+Valid, 13866 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:43,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5224 Valid, 13866 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 07:48:43,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2970 states. [2022-01-10 07:48:43,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2970 to 2937. [2022-01-10 07:48:43,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.79554162312783) internal successors, (5155), 2875 states have internal predecessors, (5155), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:43,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5256 transitions. [2022-01-10 07:48:43,702 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5256 transitions. Word has length 190 [2022-01-10 07:48:43,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:43,703 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5256 transitions. [2022-01-10 07:48:43,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 07:48:43,703 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5256 transitions. [2022-01-10 07:48:43,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:43,705 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:43,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:43,713 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 07:48:43,913 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 07:48:43,914 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:43,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:43,915 INFO L85 PathProgramCache]: Analyzing trace with hash -2064039626, now seen corresponding path program 1 times [2022-01-10 07:48:43,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:43,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [873587730] [2022-01-10 07:48:43,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:43,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:43,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:43,917 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 07:48:43,919 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 07:48:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:44,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 534 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:44,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:44,370 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 07:48:44,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:44,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:44,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [873587730] [2022-01-10 07:48:44,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [873587730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:44,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:44,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:44,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352845599] [2022-01-10 07:48:44,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:44,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:44,372 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:44,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:44,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:44,374 INFO L87 Difference]: Start difference. First operand 2937 states and 5256 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:44,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:44,758 INFO L93 Difference]: Finished difference Result 3732 states and 6526 transitions. [2022-01-10 07:48:44,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:44,759 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:44,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:44,769 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:44,769 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:44,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:44,776 INFO L933 BasicCegarLoop]: 4571 mSDtfsCounter, 4837 mSDsluCounter, 8623 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4858 SdHoareTripleChecker+Valid, 13194 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:44,776 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4858 Valid, 13194 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:44,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:44,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:44,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.793103448275862) internal successors, (5148), 2875 states have internal predecessors, (5148), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:44,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5249 transitions. [2022-01-10 07:48:44,843 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5249 transitions. Word has length 190 [2022-01-10 07:48:44,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:44,843 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5249 transitions. [2022-01-10 07:48:44,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5249 transitions. [2022-01-10 07:48:44,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:44,845 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:44,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:48:44,855 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 07:48:45,053 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 07:48:45,054 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash -45411142, now seen corresponding path program 1 times [2022-01-10 07:48:45,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:45,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [559439487] [2022-01-10 07:48:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:45,055 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:45,055 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:45,057 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 07:48:45,057 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 07:48:45,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:45,201 INFO L263 TraceCheckSpWp]: Trace formula consists of 532 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:45,204 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:45,469 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 07:48:45,470 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:45,470 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:45,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [559439487] [2022-01-10 07:48:45,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [559439487] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:45,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:45,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:45,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855439798] [2022-01-10 07:48:45,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:45,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:45,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:45,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:45,472 INFO L87 Difference]: Start difference. First operand 2937 states and 5249 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:45,857 INFO L93 Difference]: Finished difference Result 3732 states and 6512 transitions. [2022-01-10 07:48:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:45,869 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:45,869 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:45,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:45,872 INFO L933 BasicCegarLoop]: 4568 mSDtfsCounter, 4830 mSDsluCounter, 8619 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4851 SdHoareTripleChecker+Valid, 13187 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:45,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4851 Valid, 13187 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:45,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:45,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7906652734238941) internal successors, (5141), 2875 states have internal predecessors, (5141), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:45,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5242 transitions. [2022-01-10 07:48:45,938 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5242 transitions. Word has length 190 [2022-01-10 07:48:45,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:45,939 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5242 transitions. [2022-01-10 07:48:45,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:45,939 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5242 transitions. [2022-01-10 07:48:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:45,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:45,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:45,949 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-01-10 07:48:46,149 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 07:48:46,150 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:46,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:46,151 INFO L85 PathProgramCache]: Analyzing trace with hash 1346631998, now seen corresponding path program 1 times [2022-01-10 07:48:46,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:46,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [545770548] [2022-01-10 07:48:46,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:46,152 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:46,152 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:46,153 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 07:48:46,154 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 07:48:46,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:46,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:46,298 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:46,555 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 07:48:46,556 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:46,556 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [545770548] [2022-01-10 07:48:46,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [545770548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:46,556 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:46,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:46,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506328505] [2022-01-10 07:48:46,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:46,557 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:46,557 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:46,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:46,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:46,557 INFO L87 Difference]: Start difference. First operand 2937 states and 5242 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:46,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:46,930 INFO L93 Difference]: Finished difference Result 3732 states and 6498 transitions. [2022-01-10 07:48:46,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:46,931 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:46,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:46,939 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:46,940 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:46,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:46,942 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 4824 mSDsluCounter, 8615 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4845 SdHoareTripleChecker+Valid, 13180 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:46,942 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4845 Valid, 13180 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:46,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:46,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:46,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7882270985719262) internal successors, (5134), 2875 states have internal predecessors, (5134), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:46,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5235 transitions. [2022-01-10 07:48:46,999 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5235 transitions. Word has length 190 [2022-01-10 07:48:47,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:47,000 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5235 transitions. [2022-01-10 07:48:47,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:47,000 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5235 transitions. [2022-01-10 07:48:47,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:47,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:47,002 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:47,009 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 07:48:47,209 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 07:48:47,210 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:47,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:47,211 INFO L85 PathProgramCache]: Analyzing trace with hash -132484038, now seen corresponding path program 1 times [2022-01-10 07:48:47,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:47,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1185794750] [2022-01-10 07:48:47,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:47,211 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:47,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:47,213 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 07:48:47,215 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 07:48:47,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:47,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:47,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:47,596 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 07:48:47,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:47,596 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:47,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1185794750] [2022-01-10 07:48:47,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1185794750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:47,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:47,597 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:47,597 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810616152] [2022-01-10 07:48:47,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:47,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:47,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:47,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:47,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:47,598 INFO L87 Difference]: Start difference. First operand 2937 states and 5235 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:47,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:47,968 INFO L93 Difference]: Finished difference Result 3732 states and 6484 transitions. [2022-01-10 07:48:47,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:47,975 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:47,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:47,983 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:47,983 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:47,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:47,986 INFO L933 BasicCegarLoop]: 4562 mSDtfsCounter, 4818 mSDsluCounter, 8611 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4839 SdHoareTripleChecker+Valid, 13173 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:47,987 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4839 Valid, 13173 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:47,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:48,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:48,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7857889237199582) internal successors, (5127), 2875 states have internal predecessors, (5127), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:48,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5228 transitions. [2022-01-10 07:48:48,037 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5228 transitions. Word has length 190 [2022-01-10 07:48:48,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:48,038 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5228 transitions. [2022-01-10 07:48:48,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:48,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5228 transitions. [2022-01-10 07:48:48,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:48,039 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:48,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:48,047 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 07:48:48,247 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 07:48:48,248 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:48,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:48,249 INFO L85 PathProgramCache]: Analyzing trace with hash 373991870, now seen corresponding path program 1 times [2022-01-10 07:48:48,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:48,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060536011] [2022-01-10 07:48:48,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:48,249 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:48,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:48,251 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 07:48:48,303 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 07:48:48,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:48,437 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:48,439 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:48,660 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 07:48:48,660 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:48,661 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:48,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060536011] [2022-01-10 07:48:48,661 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060536011] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:48,661 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:48,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:48,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009944070] [2022-01-10 07:48:48,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:48,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:48,661 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:48,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:48,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:48,662 INFO L87 Difference]: Start difference. First operand 2937 states and 5228 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:49,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:49,011 INFO L93 Difference]: Finished difference Result 3732 states and 6470 transitions. [2022-01-10 07:48:49,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:49,023 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:49,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:49,032 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:49,032 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:49,034 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:49,034 INFO L933 BasicCegarLoop]: 4559 mSDtfsCounter, 4812 mSDsluCounter, 8607 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4833 SdHoareTripleChecker+Valid, 13166 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:49,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4833 Valid, 13166 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:49,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:49,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:49,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7833507488679903) internal successors, (5120), 2875 states have internal predecessors, (5120), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:49,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5221 transitions. [2022-01-10 07:48:49,078 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5221 transitions. Word has length 190 [2022-01-10 07:48:49,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:49,078 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5221 transitions. [2022-01-10 07:48:49,079 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:49,079 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5221 transitions. [2022-01-10 07:48:49,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:49,080 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:49,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:49,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:49,288 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 07:48:49,289 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:49,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:49,289 INFO L85 PathProgramCache]: Analyzing trace with hash -412006020, now seen corresponding path program 1 times [2022-01-10 07:48:49,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:49,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [708453092] [2022-01-10 07:48:49,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:49,290 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:49,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:49,291 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 07:48:49,292 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 07:48:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:49,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 525 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:49,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:49,650 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 07:48:49,650 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:49,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:49,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [708453092] [2022-01-10 07:48:49,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [708453092] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:49,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:49,650 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:49,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819388692] [2022-01-10 07:48:49,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:49,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:49,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:49,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:49,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:49,652 INFO L87 Difference]: Start difference. First operand 2937 states and 5221 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:50,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:50,006 INFO L93 Difference]: Finished difference Result 3732 states and 6456 transitions. [2022-01-10 07:48:50,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:50,007 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:50,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:50,023 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:50,023 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:50,025 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:50,026 INFO L933 BasicCegarLoop]: 4556 mSDtfsCounter, 4806 mSDsluCounter, 8603 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4827 SdHoareTripleChecker+Valid, 13159 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:50,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4827 Valid, 13159 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:50,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:50,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7809125740160223) internal successors, (5113), 2875 states have internal predecessors, (5113), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:50,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5214 transitions. [2022-01-10 07:48:50,085 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5214 transitions. Word has length 190 [2022-01-10 07:48:50,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:50,085 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5214 transitions. [2022-01-10 07:48:50,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:50,085 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5214 transitions. [2022-01-10 07:48:50,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:50,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:50,087 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:50,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Ended with exit code 0 [2022-01-10 07:48:50,296 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 07:48:50,296 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:50,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:50,297 INFO L85 PathProgramCache]: Analyzing trace with hash 679022592, now seen corresponding path program 1 times [2022-01-10 07:48:50,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:50,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1596894925] [2022-01-10 07:48:50,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:50,297 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:50,297 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:50,299 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 07:48:50,337 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 07:48:50,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:50,443 INFO L263 TraceCheckSpWp]: Trace formula consists of 523 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:50,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:50,652 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 07:48:50,652 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:50,652 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:50,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1596894925] [2022-01-10 07:48:50,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1596894925] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:50,653 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:50,653 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:50,653 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714237443] [2022-01-10 07:48:50,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:50,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:50,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:50,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:50,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:50,654 INFO L87 Difference]: Start difference. First operand 2937 states and 5214 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:51,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:51,019 INFO L93 Difference]: Finished difference Result 3732 states and 6442 transitions. [2022-01-10 07:48:51,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:51,020 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:51,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:51,025 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:51,025 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:51,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:51,028 INFO L933 BasicCegarLoop]: 4553 mSDtfsCounter, 4800 mSDsluCounter, 8599 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4821 SdHoareTripleChecker+Valid, 13152 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:51,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4821 Valid, 13152 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:51,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:51,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:51,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7784743991640544) internal successors, (5106), 2875 states have internal predecessors, (5106), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:51,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5207 transitions. [2022-01-10 07:48:51,089 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5207 transitions. Word has length 190 [2022-01-10 07:48:51,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:51,090 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5207 transitions. [2022-01-10 07:48:51,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:51,090 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5207 transitions. [2022-01-10 07:48:51,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:51,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:51,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:51,104 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 07:48:51,307 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 07:48:51,308 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:51,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:51,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1406953724, now seen corresponding path program 1 times [2022-01-10 07:48:51,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:51,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [806724570] [2022-01-10 07:48:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:51,309 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:51,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:51,310 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 07:48:51,311 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 07:48:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:51,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 521 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:51,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:51,624 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 07:48:51,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:51,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:51,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [806724570] [2022-01-10 07:48:51,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [806724570] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:51,625 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:51,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:51,625 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834621401] [2022-01-10 07:48:51,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:51,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:51,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:51,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:51,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:51,626 INFO L87 Difference]: Start difference. First operand 2937 states and 5207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:51,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:51,962 INFO L93 Difference]: Finished difference Result 3732 states and 6428 transitions. [2022-01-10 07:48:51,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:51,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:51,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:51,967 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:51,967 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:51,969 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:51,970 INFO L933 BasicCegarLoop]: 4550 mSDtfsCounter, 4794 mSDsluCounter, 8595 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4815 SdHoareTripleChecker+Valid, 13145 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:51,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4815 Valid, 13145 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:51,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:52,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:52,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7760362243120864) internal successors, (5099), 2875 states have internal predecessors, (5099), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5200 transitions. [2022-01-10 07:48:52,016 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5200 transitions. Word has length 190 [2022-01-10 07:48:52,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:52,017 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5200 transitions. [2022-01-10 07:48:52,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5200 transitions. [2022-01-10 07:48:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:52,018 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:52,018 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:52,031 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 07:48:52,229 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 07:48:52,230 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:52,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:52,230 INFO L85 PathProgramCache]: Analyzing trace with hash -93585280, now seen corresponding path program 1 times [2022-01-10 07:48:52,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:52,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49343270] [2022-01-10 07:48:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:52,231 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:52,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:52,232 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 07:48:52,234 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 07:48:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:52,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 519 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:52,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:52,591 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 07:48:52,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:52,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:52,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49343270] [2022-01-10 07:48:52,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49343270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:52,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:52,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:52,592 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045089251] [2022-01-10 07:48:52,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:52,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:52,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:52,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:52,593 INFO L87 Difference]: Start difference. First operand 2937 states and 5200 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:52,937 INFO L93 Difference]: Finished difference Result 3732 states and 6414 transitions. [2022-01-10 07:48:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:52,937 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:52,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:52,942 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:52,942 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:52,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:52,944 INFO L933 BasicCegarLoop]: 4547 mSDtfsCounter, 4787 mSDsluCounter, 8591 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4808 SdHoareTripleChecker+Valid, 13138 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:52,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4808 Valid, 13138 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:52,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:52,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:52,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7735980494601185) internal successors, (5092), 2875 states have internal predecessors, (5092), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:52,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5193 transitions. [2022-01-10 07:48:52,989 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5193 transitions. Word has length 190 [2022-01-10 07:48:52,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:52,989 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5193 transitions. [2022-01-10 07:48:52,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:52,989 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5193 transitions. [2022-01-10 07:48:52,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:52,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:52,991 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:52,999 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 07:48:53,199 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 07:48:53,199 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:53,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:53,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1203525372, now seen corresponding path program 1 times [2022-01-10 07:48:53,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:53,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1595918753] [2022-01-10 07:48:53,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:53,200 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:53,200 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:53,201 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 07:48:53,202 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 07:48:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:53,370 INFO L263 TraceCheckSpWp]: Trace formula consists of 517 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:53,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:53,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:48:53,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:53,601 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:53,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1595918753] [2022-01-10 07:48:53,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1595918753] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:53,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:53,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:53,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308782998] [2022-01-10 07:48:53,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:53,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:53,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:53,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:53,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:53,603 INFO L87 Difference]: Start difference. First operand 2937 states and 5193 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:53,989 INFO L93 Difference]: Finished difference Result 3732 states and 6400 transitions. [2022-01-10 07:48:53,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:53,990 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:53,994 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:53,994 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:53,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:53,996 INFO L933 BasicCegarLoop]: 4544 mSDtfsCounter, 4781 mSDsluCounter, 8587 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4802 SdHoareTripleChecker+Valid, 13131 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:53,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4802 Valid, 13131 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:54,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:54,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:54,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7711598746081505) internal successors, (5085), 2875 states have internal predecessors, (5085), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:54,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5186 transitions. [2022-01-10 07:48:54,044 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5186 transitions. Word has length 190 [2022-01-10 07:48:54,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:54,045 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5186 transitions. [2022-01-10 07:48:54,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5186 transitions. [2022-01-10 07:48:54,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:54,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:54,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:54,056 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 07:48:54,256 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 07:48:54,256 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:54,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:54,257 INFO L85 PathProgramCache]: Analyzing trace with hash 2085806080, now seen corresponding path program 1 times [2022-01-10 07:48:54,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:54,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636028207] [2022-01-10 07:48:54,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:54,257 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:54,258 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:54,258 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 07:48:54,259 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 07:48:54,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:54,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 515 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:54,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:54,598 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 07:48:54,598 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:54,598 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:54,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636028207] [2022-01-10 07:48:54,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1636028207] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:54,599 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:54,599 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:54,599 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945051668] [2022-01-10 07:48:54,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:54,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:54,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:54,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:54,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:54,600 INFO L87 Difference]: Start difference. First operand 2937 states and 5186 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:54,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:54,930 INFO L93 Difference]: Finished difference Result 3732 states and 6386 transitions. [2022-01-10 07:48:54,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:48:54,930 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:54,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:54,935 INFO L225 Difference]: With dead ends: 3732 [2022-01-10 07:48:54,935 INFO L226 Difference]: Without dead ends: 2937 [2022-01-10 07:48:54,937 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:54,937 INFO L933 BasicCegarLoop]: 4541 mSDtfsCounter, 4775 mSDsluCounter, 8583 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4796 SdHoareTripleChecker+Valid, 13124 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:54,937 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4796 Valid, 13124 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:48:54,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2937 states. [2022-01-10 07:48:54,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2937 to 2937. [2022-01-10 07:48:54,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2937 states, 2871 states have (on average 1.7687216997561825) internal successors, (5078), 2875 states have internal predecessors, (5078), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 07:48:54,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2937 states to 2937 states and 5179 transitions. [2022-01-10 07:48:54,980 INFO L78 Accepts]: Start accepts. Automaton has 2937 states and 5179 transitions. Word has length 190 [2022-01-10 07:48:54,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:54,980 INFO L470 AbstractCegarLoop]: Abstraction has 2937 states and 5179 transitions. [2022-01-10 07:48:54,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:54,980 INFO L276 IsEmpty]: Start isEmpty. Operand 2937 states and 5179 transitions. [2022-01-10 07:48:54,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:54,981 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:54,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:54,993 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 07:48:55,190 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 07:48:55,191 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:55,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:55,191 INFO L85 PathProgramCache]: Analyzing trace with hash -163391100, now seen corresponding path program 1 times [2022-01-10 07:48:55,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:55,191 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620677126] [2022-01-10 07:48:55,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:55,192 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:55,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:55,193 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 07:48:55,195 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 07:48:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:55,323 INFO L263 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:55,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:55,533 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 07:48:55,533 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:55,533 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:55,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620677126] [2022-01-10 07:48:55,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620677126] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:55,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:55,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:55,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915667676] [2022-01-10 07:48:55,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:55,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:55,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:55,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:55,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:55,535 INFO L87 Difference]: Start difference. First operand 2937 states and 5179 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:55,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:55,998 INFO L93 Difference]: Finished difference Result 3938 states and 6692 transitions. [2022-01-10 07:48:55,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:55,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:55,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:56,004 INFO L225 Difference]: With dead ends: 3938 [2022-01-10 07:48:56,005 INFO L226 Difference]: Without dead ends: 3143 [2022-01-10 07:48:56,008 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:56,009 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 4905 mSDsluCounter, 8578 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4926 SdHoareTripleChecker+Valid, 13116 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:56,010 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4926 Valid, 13116 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:56,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2022-01-10 07:48:56,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3143. [2022-01-10 07:48:56,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3143 states, 3071 states have (on average 1.7430804298274178) internal successors, (5353), 3075 states have internal predecessors, (5353), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 07:48:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3143 states to 3143 states and 5458 transitions. [2022-01-10 07:48:56,060 INFO L78 Accepts]: Start accepts. Automaton has 3143 states and 5458 transitions. Word has length 190 [2022-01-10 07:48:56,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:56,061 INFO L470 AbstractCegarLoop]: Abstraction has 3143 states and 5458 transitions. [2022-01-10 07:48:56,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:56,061 INFO L276 IsEmpty]: Start isEmpty. Operand 3143 states and 5458 transitions. [2022-01-10 07:48:56,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:56,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:56,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:56,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:48:56,270 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 07:48:56,271 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:56,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:56,271 INFO L85 PathProgramCache]: Analyzing trace with hash -692215647, now seen corresponding path program 1 times [2022-01-10 07:48:56,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:56,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272390805] [2022-01-10 07:48:56,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:56,272 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:56,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:56,273 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 07:48:56,274 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 07:48:56,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:56,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:56,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:56,622 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 07:48:56,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:56,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:56,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272390805] [2022-01-10 07:48:56,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272390805] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:56,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:56,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:56,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668138851] [2022-01-10 07:48:56,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:56,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:56,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:56,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:56,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:56,624 INFO L87 Difference]: Start difference. First operand 3143 states and 5458 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:57,105 INFO L93 Difference]: Finished difference Result 4350 states and 7250 transitions. [2022-01-10 07:48:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:57,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:57,112 INFO L225 Difference]: With dead ends: 4350 [2022-01-10 07:48:57,112 INFO L226 Difference]: Without dead ends: 3349 [2022-01-10 07:48:57,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:57,116 INFO L933 BasicCegarLoop]: 4536 mSDtfsCounter, 4898 mSDsluCounter, 8574 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4919 SdHoareTripleChecker+Valid, 13110 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:57,116 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4919 Valid, 13110 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:57,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3349 states. [2022-01-10 07:48:57,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3349 to 3349. [2022-01-10 07:48:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3349 states, 3271 states have (on average 1.719351880158973) internal successors, (5624), 3275 states have internal predecessors, (5624), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 07:48:57,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3349 states to 3349 states and 5733 transitions. [2022-01-10 07:48:57,174 INFO L78 Accepts]: Start accepts. Automaton has 3349 states and 5733 transitions. Word has length 190 [2022-01-10 07:48:57,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:57,174 INFO L470 AbstractCegarLoop]: Abstraction has 3349 states and 5733 transitions. [2022-01-10 07:48:57,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 3349 states and 5733 transitions. [2022-01-10 07:48:57,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:57,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:57,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:57,186 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 07:48:57,384 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 07:48:57,384 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:57,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:57,384 INFO L85 PathProgramCache]: Analyzing trace with hash 681978661, now seen corresponding path program 1 times [2022-01-10 07:48:57,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:57,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1511041408] [2022-01-10 07:48:57,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:57,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:57,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:57,386 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 07:48:57,387 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 07:48:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:57,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 509 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:57,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:57,753 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 07:48:57,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:57,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:57,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1511041408] [2022-01-10 07:48:57,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1511041408] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:57,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:57,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:57,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476263864] [2022-01-10 07:48:57,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:57,754 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:57,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:57,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:57,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:57,755 INFO L87 Difference]: Start difference. First operand 3349 states and 5733 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:58,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:58,301 INFO L93 Difference]: Finished difference Result 4762 states and 7800 transitions. [2022-01-10 07:48:58,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:58,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:58,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:58,307 INFO L225 Difference]: With dead ends: 4762 [2022-01-10 07:48:58,307 INFO L226 Difference]: Without dead ends: 3555 [2022-01-10 07:48:58,310 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:58,310 INFO L933 BasicCegarLoop]: 4531 mSDtfsCounter, 4892 mSDsluCounter, 8570 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4913 SdHoareTripleChecker+Valid, 13101 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:58,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4913 Valid, 13101 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 07:48:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3555 states. [2022-01-10 07:48:58,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3555 to 3555. [2022-01-10 07:48:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3555 states, 3471 states have (on average 1.69720541630654) internal successors, (5891), 3475 states have internal predecessors, (5891), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 07:48:58,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3555 states to 3555 states and 6004 transitions. [2022-01-10 07:48:58,435 INFO L78 Accepts]: Start accepts. Automaton has 3555 states and 6004 transitions. Word has length 190 [2022-01-10 07:48:58,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:58,436 INFO L470 AbstractCegarLoop]: Abstraction has 3555 states and 6004 transitions. [2022-01-10 07:48:58,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:58,436 INFO L276 IsEmpty]: Start isEmpty. Operand 3555 states and 6004 transitions. [2022-01-10 07:48:58,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:58,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:58,437 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:58,447 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 07:48:58,645 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 07:48:58,646 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:58,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:58,646 INFO L85 PathProgramCache]: Analyzing trace with hash 763731968, now seen corresponding path program 1 times [2022-01-10 07:48:58,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:58,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [963205758] [2022-01-10 07:48:58,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:58,647 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:58,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:58,648 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 07:48:58,649 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 07:48:58,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:58,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:58,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:48:59,002 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 07:48:59,002 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:48:59,002 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:48:59,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [963205758] [2022-01-10 07:48:59,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [963205758] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:48:59,002 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:48:59,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:48:59,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077423883] [2022-01-10 07:48:59,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:48:59,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:48:59,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:48:59,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:48:59,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:48:59,004 INFO L87 Difference]: Start difference. First operand 3555 states and 6004 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:59,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:48:59,495 INFO L93 Difference]: Finished difference Result 5174 states and 8342 transitions. [2022-01-10 07:48:59,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:48:59,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:48:59,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:48:59,501 INFO L225 Difference]: With dead ends: 5174 [2022-01-10 07:48:59,501 INFO L226 Difference]: Without dead ends: 3761 [2022-01-10 07:48:59,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:48:59,505 INFO L933 BasicCegarLoop]: 4528 mSDtfsCounter, 4885 mSDsluCounter, 8566 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4906 SdHoareTripleChecker+Valid, 13094 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:48:59,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4906 Valid, 13094 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:48:59,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3761 states. [2022-01-10 07:48:59,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3761 to 3761. [2022-01-10 07:48:59,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3761 states, 3671 states have (on average 1.6763824570961592) internal successors, (6154), 3675 states have internal predecessors, (6154), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 07:48:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3761 states to 3761 states and 6271 transitions. [2022-01-10 07:48:59,582 INFO L78 Accepts]: Start accepts. Automaton has 3761 states and 6271 transitions. Word has length 190 [2022-01-10 07:48:59,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:48:59,582 INFO L470 AbstractCegarLoop]: Abstraction has 3761 states and 6271 transitions. [2022-01-10 07:48:59,582 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:48:59,582 INFO L276 IsEmpty]: Start isEmpty. Operand 3761 states and 6271 transitions. [2022-01-10 07:48:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:48:59,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:48:59,584 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:48:59,607 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 07:48:59,810 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 07:48:59,810 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:48:59,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:48:59,810 INFO L85 PathProgramCache]: Analyzing trace with hash 31288995, now seen corresponding path program 1 times [2022-01-10 07:48:59,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:48:59,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1246118216] [2022-01-10 07:48:59,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:48:59,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:48:59,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:48:59,812 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 07:48:59,847 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 07:48:59,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:48:59,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:48:59,951 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:00,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:00,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:00,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:00,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1246118216] [2022-01-10 07:49:00,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1246118216] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:00,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:00,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:00,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708106066] [2022-01-10 07:49:00,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:00,177 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:00,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:00,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:00,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:00,178 INFO L87 Difference]: Start difference. First operand 3761 states and 6271 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:00,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:00,700 INFO L93 Difference]: Finished difference Result 5586 states and 8876 transitions. [2022-01-10 07:49:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:00,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:00,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:00,706 INFO L225 Difference]: With dead ends: 5586 [2022-01-10 07:49:00,707 INFO L226 Difference]: Without dead ends: 3967 [2022-01-10 07:49:00,710 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:00,710 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4877 mSDsluCounter, 8562 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4898 SdHoareTripleChecker+Valid, 13087 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:00,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4898 Valid, 13087 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:00,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3967 states. [2022-01-10 07:49:00,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3967 to 3967. [2022-01-10 07:49:00,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3967 states, 3871 states have (on average 1.6566778610178248) internal successors, (6413), 3875 states have internal predecessors, (6413), 61 states have call successors, (61), 33 states have call predecessors, (61), 33 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 07:49:00,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3967 states to 3967 states and 6534 transitions. [2022-01-10 07:49:00,805 INFO L78 Accepts]: Start accepts. Automaton has 3967 states and 6534 transitions. Word has length 190 [2022-01-10 07:49:00,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:00,807 INFO L470 AbstractCegarLoop]: Abstraction has 3967 states and 6534 transitions. [2022-01-10 07:49:00,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:00,807 INFO L276 IsEmpty]: Start isEmpty. Operand 3967 states and 6534 transitions. [2022-01-10 07:49:00,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:00,808 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:00,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:00,821 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 07:49:01,017 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 07:49:01,017 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:01,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:01,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2110964934, now seen corresponding path program 1 times [2022-01-10 07:49:01,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:01,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [55654226] [2022-01-10 07:49:01,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:01,018 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:01,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:01,019 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 07:49:01,039 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 07:49:01,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:01,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:01,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:01,389 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 07:49:01,390 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:01,390 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:01,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [55654226] [2022-01-10 07:49:01,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [55654226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:01,390 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:01,390 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:01,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709748267] [2022-01-10 07:49:01,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:01,391 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:01,391 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:01,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:01,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:01,391 INFO L87 Difference]: Start difference. First operand 3967 states and 6534 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:01,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:01,952 INFO L93 Difference]: Finished difference Result 5998 states and 9402 transitions. [2022-01-10 07:49:01,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:01,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:01,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:01,959 INFO L225 Difference]: With dead ends: 5998 [2022-01-10 07:49:01,959 INFO L226 Difference]: Without dead ends: 4173 [2022-01-10 07:49:01,962 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:01,963 INFO L933 BasicCegarLoop]: 4522 mSDtfsCounter, 4870 mSDsluCounter, 8558 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4891 SdHoareTripleChecker+Valid, 13080 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:01,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4891 Valid, 13080 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:01,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2022-01-10 07:49:02,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 4173. [2022-01-10 07:49:02,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4173 states, 4071 states have (on average 1.6379267993122082) internal successors, (6668), 4075 states have internal predecessors, (6668), 63 states have call successors, (63), 37 states have call predecessors, (63), 37 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 07:49:02,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4173 states to 4173 states and 6793 transitions. [2022-01-10 07:49:02,109 INFO L78 Accepts]: Start accepts. Automaton has 4173 states and 6793 transitions. Word has length 190 [2022-01-10 07:49:02,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:02,109 INFO L470 AbstractCegarLoop]: Abstraction has 4173 states and 6793 transitions. [2022-01-10 07:49:02,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:02,109 INFO L276 IsEmpty]: Start isEmpty. Operand 4173 states and 6793 transitions. [2022-01-10 07:49:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:02,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:02,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:02,123 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 07:49:02,318 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 07:49:02,318 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:02,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:02,319 INFO L85 PathProgramCache]: Analyzing trace with hash 278312898, now seen corresponding path program 1 times [2022-01-10 07:49:02,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:02,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1492089578] [2022-01-10 07:49:02,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:02,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:02,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:02,320 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 07:49:02,322 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 07:49:02,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:02,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:02,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:02,676 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 07:49:02,676 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:02,676 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:02,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1492089578] [2022-01-10 07:49:02,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1492089578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:02,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:02,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:02,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578057607] [2022-01-10 07:49:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:02,677 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:02,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:02,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:02,678 INFO L87 Difference]: Start difference. First operand 4173 states and 6793 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:03,206 INFO L93 Difference]: Finished difference Result 6410 states and 9920 transitions. [2022-01-10 07:49:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:03,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:03,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:03,213 INFO L225 Difference]: With dead ends: 6410 [2022-01-10 07:49:03,213 INFO L226 Difference]: Without dead ends: 4379 [2022-01-10 07:49:03,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:03,218 INFO L933 BasicCegarLoop]: 4519 mSDtfsCounter, 4863 mSDsluCounter, 8554 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4884 SdHoareTripleChecker+Valid, 13073 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:03,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4884 Valid, 13073 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:03,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4379 states. [2022-01-10 07:49:03,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4379 to 4379. [2022-01-10 07:49:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4379 states, 4271 states have (on average 1.619995317255912) internal successors, (6919), 4275 states have internal predecessors, (6919), 65 states have call successors, (65), 41 states have call predecessors, (65), 41 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 07:49:03,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4379 states to 4379 states and 7048 transitions. [2022-01-10 07:49:03,328 INFO L78 Accepts]: Start accepts. Automaton has 4379 states and 7048 transitions. Word has length 190 [2022-01-10 07:49:03,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:03,329 INFO L470 AbstractCegarLoop]: Abstraction has 4379 states and 7048 transitions. [2022-01-10 07:49:03,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:03,330 INFO L276 IsEmpty]: Start isEmpty. Operand 4379 states and 7048 transitions. [2022-01-10 07:49:03,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:03,331 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:03,331 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:03,339 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Ended with exit code 0 [2022-01-10 07:49:03,538 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 07:49:03,539 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:03,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1822976667, now seen corresponding path program 1 times [2022-01-10 07:49:03,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:03,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [979789531] [2022-01-10 07:49:03,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:03,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:03,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:03,541 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 07:49:03,542 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 07:49:03,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:03,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:03,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:03,877 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 07:49:03,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:03,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:03,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [979789531] [2022-01-10 07:49:03,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [979789531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:03,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:03,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:03,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715954260] [2022-01-10 07:49:03,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:03,879 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:03,879 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:03,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:03,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:03,879 INFO L87 Difference]: Start difference. First operand 4379 states and 7048 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:04,406 INFO L93 Difference]: Finished difference Result 6822 states and 10430 transitions. [2022-01-10 07:49:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:04,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:04,415 INFO L225 Difference]: With dead ends: 6822 [2022-01-10 07:49:04,415 INFO L226 Difference]: Without dead ends: 4585 [2022-01-10 07:49:04,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:04,420 INFO L933 BasicCegarLoop]: 4516 mSDtfsCounter, 4856 mSDsluCounter, 8550 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4877 SdHoareTripleChecker+Valid, 13066 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:04,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4877 Valid, 13066 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:04,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4585 states. [2022-01-10 07:49:04,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4585 to 4585. [2022-01-10 07:49:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4585 states, 4471 states have (on average 1.6027734287631403) internal successors, (7166), 4475 states have internal predecessors, (7166), 67 states have call successors, (67), 45 states have call predecessors, (67), 45 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 07:49:04,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4585 states to 4585 states and 7299 transitions. [2022-01-10 07:49:04,605 INFO L78 Accepts]: Start accepts. Automaton has 4585 states and 7299 transitions. Word has length 190 [2022-01-10 07:49:04,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:04,605 INFO L470 AbstractCegarLoop]: Abstraction has 4585 states and 7299 transitions. [2022-01-10 07:49:04,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:04,606 INFO L276 IsEmpty]: Start isEmpty. Operand 4585 states and 7299 transitions. [2022-01-10 07:49:04,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:04,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:04,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:04,615 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 07:49:04,815 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 07:49:04,815 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:04,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:04,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1484689117, now seen corresponding path program 1 times [2022-01-10 07:49:04,816 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:04,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248181386] [2022-01-10 07:49:04,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:04,816 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:04,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:04,817 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 07:49:04,818 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 07:49:04,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:04,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 494 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:04,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:05,161 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 07:49:05,161 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:05,161 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:05,161 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248181386] [2022-01-10 07:49:05,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248181386] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:05,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:05,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:05,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127379333] [2022-01-10 07:49:05,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:05,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:05,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:05,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:05,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:05,163 INFO L87 Difference]: Start difference. First operand 4585 states and 7299 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:05,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:05,713 INFO L93 Difference]: Finished difference Result 7234 states and 10932 transitions. [2022-01-10 07:49:05,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:05,713 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:05,721 INFO L225 Difference]: With dead ends: 7234 [2022-01-10 07:49:05,721 INFO L226 Difference]: Without dead ends: 4791 [2022-01-10 07:49:05,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:05,726 INFO L933 BasicCegarLoop]: 4513 mSDtfsCounter, 4849 mSDsluCounter, 8546 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4870 SdHoareTripleChecker+Valid, 13059 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:05,726 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4870 Valid, 13059 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:05,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4791 states. [2022-01-10 07:49:05,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4791 to 4791. [2022-01-10 07:49:05,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4791 states, 4671 states have (on average 1.5861699850139157) internal successors, (7409), 4675 states have internal predecessors, (7409), 69 states have call successors, (69), 49 states have call predecessors, (69), 49 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 07:49:05,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4791 states to 4791 states and 7546 transitions. [2022-01-10 07:49:05,862 INFO L78 Accepts]: Start accepts. Automaton has 4791 states and 7546 transitions. Word has length 190 [2022-01-10 07:49:05,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:05,862 INFO L470 AbstractCegarLoop]: Abstraction has 4791 states and 7546 transitions. [2022-01-10 07:49:05,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:05,862 INFO L276 IsEmpty]: Start isEmpty. Operand 4791 states and 7546 transitions. [2022-01-10 07:49:05,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:05,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:05,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:05,875 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 07:49:06,073 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 07:49:06,073 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:06,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash 99341894, now seen corresponding path program 1 times [2022-01-10 07:49:06,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:06,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [612919107] [2022-01-10 07:49:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:06,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:06,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:06,075 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 07:49:06,076 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 07:49:06,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:06,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:06,202 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:06,420 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 07:49:06,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:06,421 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:06,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [612919107] [2022-01-10 07:49:06,421 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [612919107] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:06,421 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:06,421 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:06,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135749210] [2022-01-10 07:49:06,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:06,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:06,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:06,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:06,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:06,422 INFO L87 Difference]: Start difference. First operand 4791 states and 7546 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:06,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:06,967 INFO L93 Difference]: Finished difference Result 7646 states and 11426 transitions. [2022-01-10 07:49:06,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:06,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:06,977 INFO L225 Difference]: With dead ends: 7646 [2022-01-10 07:49:06,977 INFO L226 Difference]: Without dead ends: 4997 [2022-01-10 07:49:06,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:06,981 INFO L933 BasicCegarLoop]: 4510 mSDtfsCounter, 4842 mSDsluCounter, 8542 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4863 SdHoareTripleChecker+Valid, 13052 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:06,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4863 Valid, 13052 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:06,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4997 states. [2022-01-10 07:49:07,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4997 to 4997. [2022-01-10 07:49:07,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4997 states, 4871 states have (on average 1.5701088072264422) internal successors, (7648), 4875 states have internal predecessors, (7648), 71 states have call successors, (71), 53 states have call predecessors, (71), 53 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 07:49:07,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4997 states to 4997 states and 7789 transitions. [2022-01-10 07:49:07,188 INFO L78 Accepts]: Start accepts. Automaton has 4997 states and 7789 transitions. Word has length 190 [2022-01-10 07:49:07,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:07,188 INFO L470 AbstractCegarLoop]: Abstraction has 4997 states and 7789 transitions. [2022-01-10 07:49:07,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:07,189 INFO L276 IsEmpty]: Start isEmpty. Operand 4997 states and 7789 transitions. [2022-01-10 07:49:07,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:07,190 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:07,190 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:07,200 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 07:49:07,398 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 07:49:07,398 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:07,399 INFO L85 PathProgramCache]: Analyzing trace with hash -575101118, now seen corresponding path program 1 times [2022-01-10 07:49:07,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:07,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1773264277] [2022-01-10 07:49:07,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:07,399 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:07,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:07,400 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 07:49:07,401 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 07:49:07,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:07,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 489 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:07,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:07,737 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 07:49:07,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:07,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:07,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1773264277] [2022-01-10 07:49:07,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1773264277] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:07,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:07,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:07,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040148499] [2022-01-10 07:49:07,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:07,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:07,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:07,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:07,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:07,739 INFO L87 Difference]: Start difference. First operand 4997 states and 7789 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:08,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:08,332 INFO L93 Difference]: Finished difference Result 8058 states and 11912 transitions. [2022-01-10 07:49:08,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:08,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:08,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:08,339 INFO L225 Difference]: With dead ends: 8058 [2022-01-10 07:49:08,339 INFO L226 Difference]: Without dead ends: 5203 [2022-01-10 07:49:08,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:08,347 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4835 mSDsluCounter, 8538 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4856 SdHoareTripleChecker+Valid, 13045 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:08,350 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4856 Valid, 13045 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:08,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2022-01-10 07:49:08,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5203. [2022-01-10 07:49:08,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5071 states have (on average 1.5545257345691186) internal successors, (7883), 5075 states have internal predecessors, (7883), 73 states have call successors, (73), 57 states have call predecessors, (73), 57 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 07:49:08,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 8028 transitions. [2022-01-10 07:49:08,511 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 8028 transitions. Word has length 190 [2022-01-10 07:49:08,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:08,511 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 8028 transitions. [2022-01-10 07:49:08,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:08,512 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 8028 transitions. [2022-01-10 07:49:08,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:08,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:08,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:08,526 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 07:49:08,724 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 07:49:08,724 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:08,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:08,724 INFO L85 PathProgramCache]: Analyzing trace with hash -698706971, now seen corresponding path program 1 times [2022-01-10 07:49:08,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:08,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [514113370] [2022-01-10 07:49:08,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:08,725 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:08,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:08,726 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 07:49:08,727 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 07:49:08,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:08,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:08,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:09,079 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 07:49:09,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:09,080 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:09,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [514113370] [2022-01-10 07:49:09,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [514113370] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:09,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:09,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:09,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [74150752] [2022-01-10 07:49:09,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:09,080 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:09,080 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:09,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:09,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:09,081 INFO L87 Difference]: Start difference. First operand 5203 states and 8028 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:09,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:09,723 INFO L93 Difference]: Finished difference Result 8470 states and 12390 transitions. [2022-01-10 07:49:09,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:49:09,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:09,730 INFO L225 Difference]: With dead ends: 8470 [2022-01-10 07:49:09,730 INFO L226 Difference]: Without dead ends: 5409 [2022-01-10 07:49:09,733 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:09,734 INFO L933 BasicCegarLoop]: 4504 mSDtfsCounter, 4827 mSDsluCounter, 8534 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4848 SdHoareTripleChecker+Valid, 13038 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:09,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4848 Valid, 13038 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:09,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5409 states. [2022-01-10 07:49:09,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5409 to 5409. [2022-01-10 07:49:09,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 5271 states have (on average 1.5393663441472207) internal successors, (8114), 5275 states have internal predecessors, (8114), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:09,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 8263 transitions. [2022-01-10 07:49:09,904 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 8263 transitions. Word has length 190 [2022-01-10 07:49:09,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:09,904 INFO L470 AbstractCegarLoop]: Abstraction has 5409 states and 8263 transitions. [2022-01-10 07:49:09,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:09,904 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 8263 transitions. [2022-01-10 07:49:09,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:09,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:09,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:09,915 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 07:49:10,114 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 07:49:10,114 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2063874967, now seen corresponding path program 1 times [2022-01-10 07:49:10,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:10,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2129513914] [2022-01-10 07:49:10,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:10,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:10,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:10,116 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 07:49:10,117 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 07:49:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:10,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:10,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:10,422 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 07:49:10,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:10,423 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:10,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2129513914] [2022-01-10 07:49:10,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2129513914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:10,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:10,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:10,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191683654] [2022-01-10 07:49:10,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:10,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:10,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:10,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:10,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:10,424 INFO L87 Difference]: Start difference. First operand 5409 states and 8263 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:10,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:10,674 INFO L93 Difference]: Finished difference Result 9053 states and 13081 transitions. [2022-01-10 07:49:10,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:10,675 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:10,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:10,686 INFO L225 Difference]: With dead ends: 9053 [2022-01-10 07:49:10,687 INFO L226 Difference]: Without dead ends: 5787 [2022-01-10 07:49:10,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:10,695 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 519 mSDsluCounter, 13800 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 519 SdHoareTripleChecker+Valid, 18332 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 07:49:10,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [519 Valid, 18332 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:10,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5787 states. [2022-01-10 07:49:10,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5787 to 5415. [2022-01-10 07:49:10,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5415 states, 5277 states have (on average 1.5342050407428462) internal successors, (8096), 5281 states have internal predecessors, (8096), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:10,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5415 states to 5415 states and 8245 transitions. [2022-01-10 07:49:10,950 INFO L78 Accepts]: Start accepts. Automaton has 5415 states and 8245 transitions. Word has length 190 [2022-01-10 07:49:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:10,950 INFO L470 AbstractCegarLoop]: Abstraction has 5415 states and 8245 transitions. [2022-01-10 07:49:10,951 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:10,951 INFO L276 IsEmpty]: Start isEmpty. Operand 5415 states and 8245 transitions. [2022-01-10 07:49:10,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:10,952 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:10,952 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:10,961 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 07:49:11,153 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 07:49:11,153 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:11,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:11,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1388714841, now seen corresponding path program 1 times [2022-01-10 07:49:11,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:11,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938737870] [2022-01-10 07:49:11,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:11,154 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:11,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:11,155 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 07:49:11,155 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 07:49:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:11,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:11,283 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:11,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:11,529 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:11,529 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:11,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938737870] [2022-01-10 07:49:11,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938737870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:11,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:11,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:11,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512018603] [2022-01-10 07:49:11,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:11,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:11,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:11,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:11,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:11,531 INFO L87 Difference]: Start difference. First operand 5415 states and 8245 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:11,777 INFO L93 Difference]: Finished difference Result 9037 states and 13009 transitions. [2022-01-10 07:49:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:11,777 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:11,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:11,787 INFO L225 Difference]: With dead ends: 9037 [2022-01-10 07:49:11,787 INFO L226 Difference]: Without dead ends: 5765 [2022-01-10 07:49:11,793 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:11,793 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 480 mSDsluCounter, 13785 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 480 SdHoareTripleChecker+Valid, 18317 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 07:49:11,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [480 Valid, 18317 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:11,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5765 states. [2022-01-10 07:49:11,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5765 to 5421. [2022-01-10 07:49:11,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5421 states, 5283 states have (on average 1.5290554609123603) internal successors, (8078), 5287 states have internal predecessors, (8078), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:12,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 8227 transitions. [2022-01-10 07:49:12,002 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 8227 transitions. Word has length 190 [2022-01-10 07:49:12,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:12,002 INFO L470 AbstractCegarLoop]: Abstraction has 5421 states and 8227 transitions. [2022-01-10 07:49:12,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:12,002 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 8227 transitions. [2022-01-10 07:49:12,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:12,003 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:12,003 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:12,011 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 07:49:12,204 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 07:49:12,204 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:12,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:12,204 INFO L85 PathProgramCache]: Analyzing trace with hash -441676955, now seen corresponding path program 1 times [2022-01-10 07:49:12,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:12,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [991004523] [2022-01-10 07:49:12,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:12,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:12,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:12,206 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 07:49:12,207 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 07:49:12,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:12,333 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:12,335 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:12,537 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 07:49:12,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:12,537 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:12,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [991004523] [2022-01-10 07:49:12,537 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [991004523] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:12,537 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:12,537 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:12,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156221313] [2022-01-10 07:49:12,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:12,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:12,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:12,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:12,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:12,538 INFO L87 Difference]: Start difference. First operand 5421 states and 8227 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:12,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:12,835 INFO L93 Difference]: Finished difference Result 9021 states and 12937 transitions. [2022-01-10 07:49:12,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:12,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:12,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:12,843 INFO L225 Difference]: With dead ends: 9021 [2022-01-10 07:49:12,843 INFO L226 Difference]: Without dead ends: 5743 [2022-01-10 07:49:12,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:12,847 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 441 mSDsluCounter, 13770 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 441 SdHoareTripleChecker+Valid, 18302 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 07:49:12,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [441 Valid, 18302 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:12,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5743 states. [2022-01-10 07:49:13,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5743 to 5427. [2022-01-10 07:49:13,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5427 states, 5289 states have (on average 1.5239175647570429) internal successors, (8060), 5293 states have internal predecessors, (8060), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:13,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5427 states to 5427 states and 8209 transitions. [2022-01-10 07:49:13,066 INFO L78 Accepts]: Start accepts. Automaton has 5427 states and 8209 transitions. Word has length 190 [2022-01-10 07:49:13,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:13,066 INFO L470 AbstractCegarLoop]: Abstraction has 5427 states and 8209 transitions. [2022-01-10 07:49:13,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:13,066 INFO L276 IsEmpty]: Start isEmpty. Operand 5427 states and 8209 transitions. [2022-01-10 07:49:13,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:13,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:13,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:13,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 07:49:13,268 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 07:49:13,268 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:13,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:13,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2010814627, now seen corresponding path program 1 times [2022-01-10 07:49:13,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:13,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1155479005] [2022-01-10 07:49:13,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:13,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:13,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:13,270 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 07:49:13,270 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 07:49:13,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:13,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:13,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:13,626 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 07:49:13,627 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:13,627 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:13,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1155479005] [2022-01-10 07:49:13,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1155479005] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:13,627 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:13,627 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:13,627 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453176791] [2022-01-10 07:49:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:13,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:13,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:13,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:13,628 INFO L87 Difference]: Start difference. First operand 5427 states and 8209 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:13,884 INFO L93 Difference]: Finished difference Result 9005 states and 12865 transitions. [2022-01-10 07:49:13,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:13,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:13,893 INFO L225 Difference]: With dead ends: 9005 [2022-01-10 07:49:13,893 INFO L226 Difference]: Without dead ends: 5721 [2022-01-10 07:49:13,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:13,899 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 402 mSDsluCounter, 13755 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 18287 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 07:49:13,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 18287 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:13,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2022-01-10 07:49:14,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5433. [2022-01-10 07:49:14,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5433 states, 5295 states have (on average 1.518791312559018) internal successors, (8042), 5299 states have internal predecessors, (8042), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:14,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5433 states to 5433 states and 8191 transitions. [2022-01-10 07:49:14,164 INFO L78 Accepts]: Start accepts. Automaton has 5433 states and 8191 transitions. Word has length 190 [2022-01-10 07:49:14,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:14,165 INFO L470 AbstractCegarLoop]: Abstraction has 5433 states and 8191 transitions. [2022-01-10 07:49:14,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:14,165 INFO L276 IsEmpty]: Start isEmpty. Operand 5433 states and 8191 transitions. [2022-01-10 07:49:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:14,166 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:14,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:14,174 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 07:49:14,366 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 07:49:14,367 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:14,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:14,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1812796319, now seen corresponding path program 1 times [2022-01-10 07:49:14,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:14,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281626095] [2022-01-10 07:49:14,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:14,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:14,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:14,368 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 07:49:14,370 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 07:49:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:14,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:14,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:14,701 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 07:49:14,702 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:14,702 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:14,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281626095] [2022-01-10 07:49:14,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281626095] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:14,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:14,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:14,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460050297] [2022-01-10 07:49:14,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:14,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:14,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:14,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:14,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:14,703 INFO L87 Difference]: Start difference. First operand 5433 states and 8191 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:14,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:14,967 INFO L93 Difference]: Finished difference Result 8961 states and 12753 transitions. [2022-01-10 07:49:14,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:14,968 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:14,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:14,976 INFO L225 Difference]: With dead ends: 8961 [2022-01-10 07:49:14,976 INFO L226 Difference]: Without dead ends: 5671 [2022-01-10 07:49:14,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:14,981 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 323 mSDsluCounter, 13720 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 18252 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 07:49:14,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 18252 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:14,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2022-01-10 07:49:15,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5439. [2022-01-10 07:49:15,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5439 states, 5301 states have (on average 1.5136766647802302) internal successors, (8024), 5305 states have internal predecessors, (8024), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:15,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5439 states to 5439 states and 8173 transitions. [2022-01-10 07:49:15,220 INFO L78 Accepts]: Start accepts. Automaton has 5439 states and 8173 transitions. Word has length 190 [2022-01-10 07:49:15,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:15,220 INFO L470 AbstractCegarLoop]: Abstraction has 5439 states and 8173 transitions. [2022-01-10 07:49:15,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:15,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5439 states and 8173 transitions. [2022-01-10 07:49:15,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:15,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:15,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:15,229 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 07:49:15,429 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 07:49:15,429 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash 84700447, now seen corresponding path program 1 times [2022-01-10 07:49:15,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:15,430 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1294774241] [2022-01-10 07:49:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:15,430 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:15,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:15,431 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 07:49:15,432 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 07:49:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:15,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:15,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:15,743 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 07:49:15,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:15,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:15,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1294774241] [2022-01-10 07:49:15,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1294774241] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:15,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:15,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:15,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726744647] [2022-01-10 07:49:15,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:15,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:15,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:15,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:15,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:15,744 INFO L87 Difference]: Start difference. First operand 5439 states and 8173 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:16,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:16,047 INFO L93 Difference]: Finished difference Result 8945 states and 12681 transitions. [2022-01-10 07:49:16,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:16,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:16,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:16,056 INFO L225 Difference]: With dead ends: 8945 [2022-01-10 07:49:16,056 INFO L226 Difference]: Without dead ends: 5649 [2022-01-10 07:49:16,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:16,061 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 284 mSDsluCounter, 13705 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 18237 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 07:49:16,061 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 18237 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:16,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5649 states. [2022-01-10 07:49:16,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5649 to 5445. [2022-01-10 07:49:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5445 states, 5307 states have (on average 1.5085735820614283) internal successors, (8006), 5311 states have internal predecessors, (8006), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5445 states to 5445 states and 8155 transitions. [2022-01-10 07:49:16,295 INFO L78 Accepts]: Start accepts. Automaton has 5445 states and 8155 transitions. Word has length 190 [2022-01-10 07:49:16,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:16,296 INFO L470 AbstractCegarLoop]: Abstraction has 5445 states and 8155 transitions. [2022-01-10 07:49:16,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:16,296 INFO L276 IsEmpty]: Start isEmpty. Operand 5445 states and 8155 transitions. [2022-01-10 07:49:16,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:16,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:16,297 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:16,305 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 07:49:16,498 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 07:49:16,498 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:16,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1534274467, now seen corresponding path program 1 times [2022-01-10 07:49:16,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:16,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [29561314] [2022-01-10 07:49:16,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:16,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:16,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:16,500 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 07:49:16,501 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 07:49:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:16,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:16,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:16,813 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 07:49:16,813 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:16,813 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:16,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [29561314] [2022-01-10 07:49:16,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [29561314] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:16,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:16,814 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:16,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241779481] [2022-01-10 07:49:16,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:16,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:16,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:16,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:16,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:16,815 INFO L87 Difference]: Start difference. First operand 5445 states and 8155 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:17,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:17,137 INFO L93 Difference]: Finished difference Result 8929 states and 12609 transitions. [2022-01-10 07:49:17,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:17,138 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:17,145 INFO L225 Difference]: With dead ends: 8929 [2022-01-10 07:49:17,145 INFO L226 Difference]: Without dead ends: 5627 [2022-01-10 07:49:17,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:17,149 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 245 mSDsluCounter, 13690 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 18222 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 07:49:17,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 18222 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:17,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5627 states. [2022-01-10 07:49:17,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5627 to 5451. [2022-01-10 07:49:17,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5451 states, 5313 states have (on average 1.5034820252211556) internal successors, (7988), 5317 states have internal predecessors, (7988), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5451 states to 5451 states and 8137 transitions. [2022-01-10 07:49:17,393 INFO L78 Accepts]: Start accepts. Automaton has 5451 states and 8137 transitions. Word has length 190 [2022-01-10 07:49:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:17,393 INFO L470 AbstractCegarLoop]: Abstraction has 5451 states and 8137 transitions. [2022-01-10 07:49:17,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 5451 states and 8137 transitions. [2022-01-10 07:49:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:17,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:17,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:49:17,403 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 07:49:17,595 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 07:49:17,595 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:17,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:17,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1765999131, now seen corresponding path program 1 times [2022-01-10 07:49:17,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:17,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1751706193] [2022-01-10 07:49:17,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:17,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:17,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:17,597 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 07:49:17,598 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 07:49:17,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:17,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:17,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:17,904 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 07:49:17,904 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:17,905 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:17,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1751706193] [2022-01-10 07:49:17,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1751706193] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:17,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:17,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:17,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036003068] [2022-01-10 07:49:17,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:17,905 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:17,905 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:17,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:17,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:17,906 INFO L87 Difference]: Start difference. First operand 5451 states and 8137 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:18,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:18,204 INFO L93 Difference]: Finished difference Result 8913 states and 12537 transitions. [2022-01-10 07:49:18,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:18,204 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:18,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:18,213 INFO L225 Difference]: With dead ends: 8913 [2022-01-10 07:49:18,213 INFO L226 Difference]: Without dead ends: 5605 [2022-01-10 07:49:18,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:18,218 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 206 mSDsluCounter, 13675 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 18207 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 07:49:18,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 18207 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:18,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5605 states. [2022-01-10 07:49:18,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5605 to 5457. [2022-01-10 07:49:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5457 states, 5319 states have (on average 1.4984019552547472) internal successors, (7970), 5323 states have internal predecessors, (7970), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:18,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5457 states to 5457 states and 8119 transitions. [2022-01-10 07:49:18,509 INFO L78 Accepts]: Start accepts. Automaton has 5457 states and 8119 transitions. Word has length 190 [2022-01-10 07:49:18,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:18,510 INFO L470 AbstractCegarLoop]: Abstraction has 5457 states and 8119 transitions. [2022-01-10 07:49:18,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:18,510 INFO L276 IsEmpty]: Start isEmpty. Operand 5457 states and 8119 transitions. [2022-01-10 07:49:18,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:18,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:18,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:18,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:18,711 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 07:49:18,711 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:18,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:18,712 INFO L85 PathProgramCache]: Analyzing trace with hash -962210215, now seen corresponding path program 1 times [2022-01-10 07:49:18,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:18,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [267341127] [2022-01-10 07:49:18,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:18,713 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:18,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:18,714 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 07:49:18,715 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 07:49:18,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:18,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:18,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:19,041 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 07:49:19,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:19,041 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:19,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [267341127] [2022-01-10 07:49:19,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [267341127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:19,042 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:19,042 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:19,042 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434922552] [2022-01-10 07:49:19,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:19,042 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:19,042 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:19,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:19,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:19,043 INFO L87 Difference]: Start difference. First operand 5457 states and 8119 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:19,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:19,324 INFO L93 Difference]: Finished difference Result 8897 states and 12465 transitions. [2022-01-10 07:49:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:19,324 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:19,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:19,332 INFO L225 Difference]: With dead ends: 8897 [2022-01-10 07:49:19,332 INFO L226 Difference]: Without dead ends: 5583 [2022-01-10 07:49:19,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:19,337 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 167 mSDsluCounter, 13660 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 18192 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 07:49:19,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 18192 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:19,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5583 states. [2022-01-10 07:49:19,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5583 to 5463. [2022-01-10 07:49:19,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5463 states, 5325 states have (on average 1.4933333333333334) internal successors, (7952), 5329 states have internal predecessors, (7952), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:19,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5463 states to 5463 states and 8101 transitions. [2022-01-10 07:49:19,588 INFO L78 Accepts]: Start accepts. Automaton has 5463 states and 8101 transitions. Word has length 190 [2022-01-10 07:49:19,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:19,588 INFO L470 AbstractCegarLoop]: Abstraction has 5463 states and 8101 transitions. [2022-01-10 07:49:19,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:19,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5463 states and 8101 transitions. [2022-01-10 07:49:19,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:19,589 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:19,589 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:19,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:19,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:19,790 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1255420183, now seen corresponding path program 1 times [2022-01-10 07:49:19,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:19,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1579926656] [2022-01-10 07:49:19,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:19,791 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:19,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:19,792 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:19,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 07:49:19,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:19,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:19,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:20,132 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 07:49:20,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:20,132 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:20,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1579926656] [2022-01-10 07:49:20,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1579926656] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:20,132 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:20,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:20,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676111047] [2022-01-10 07:49:20,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:20,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:20,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:20,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:20,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:20,133 INFO L87 Difference]: Start difference. First operand 5463 states and 8101 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:20,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:20,412 INFO L93 Difference]: Finished difference Result 8881 states and 12393 transitions. [2022-01-10 07:49:20,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:20,415 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:20,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:20,424 INFO L225 Difference]: With dead ends: 8881 [2022-01-10 07:49:20,424 INFO L226 Difference]: Without dead ends: 5561 [2022-01-10 07:49:20,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:20,429 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 128 mSDsluCounter, 13645 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 18177 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 07:49:20,429 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 18177 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5561 states. [2022-01-10 07:49:20,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5561 to 5469. [2022-01-10 07:49:20,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5469 states, 5331 states have (on average 1.4882761208028512) internal successors, (7934), 5335 states have internal predecessors, (7934), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:20,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5469 states to 5469 states and 8083 transitions. [2022-01-10 07:49:20,680 INFO L78 Accepts]: Start accepts. Automaton has 5469 states and 8083 transitions. Word has length 190 [2022-01-10 07:49:20,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:20,681 INFO L470 AbstractCegarLoop]: Abstraction has 5469 states and 8083 transitions. [2022-01-10 07:49:20,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:20,681 INFO L276 IsEmpty]: Start isEmpty. Operand 5469 states and 8083 transitions. [2022-01-10 07:49:20,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:20,682 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:20,682 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:20,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 07:49:20,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:20,890 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:20,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:20,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1131089323, now seen corresponding path program 1 times [2022-01-10 07:49:20,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:20,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1343928181] [2022-01-10 07:49:20,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:20,891 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:20,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:20,892 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:20,892 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 07:49:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:21,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:21,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:21,219 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 07:49:21,219 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:21,219 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:21,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1343928181] [2022-01-10 07:49:21,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1343928181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:21,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:21,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:21,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282616738] [2022-01-10 07:49:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:21,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:21,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:21,220 INFO L87 Difference]: Start difference. First operand 5469 states and 8083 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:21,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:21,550 INFO L93 Difference]: Finished difference Result 8865 states and 12321 transitions. [2022-01-10 07:49:21,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:21,551 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:21,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:21,560 INFO L225 Difference]: With dead ends: 8865 [2022-01-10 07:49:21,560 INFO L226 Difference]: Without dead ends: 5539 [2022-01-10 07:49:21,564 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:21,564 INFO L933 BasicCegarLoop]: 4532 mSDtfsCounter, 89 mSDsluCounter, 13630 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 18162 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 07:49:21,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 18162 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5539 states. [2022-01-10 07:49:21,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5539 to 5475. [2022-01-10 07:49:21,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5475 states, 5337 states have (on average 1.4832302791830616) internal successors, (7916), 5341 states have internal predecessors, (7916), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 07:49:21,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5475 states to 5475 states and 8065 transitions. [2022-01-10 07:49:21,830 INFO L78 Accepts]: Start accepts. Automaton has 5475 states and 8065 transitions. Word has length 190 [2022-01-10 07:49:21,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:21,831 INFO L470 AbstractCegarLoop]: Abstraction has 5475 states and 8065 transitions. [2022-01-10 07:49:21,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:21,831 INFO L276 IsEmpty]: Start isEmpty. Operand 5475 states and 8065 transitions. [2022-01-10 07:49:21,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:21,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:21,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:21,840 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 07:49:22,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:22,036 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:22,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:22,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1185482221, now seen corresponding path program 1 times [2022-01-10 07:49:22,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:22,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [248336907] [2022-01-10 07:49:22,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:22,037 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:22,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:22,038 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:22,039 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 07:49:22,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:22,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:49:22,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:22,400 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 07:49:22,400 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:22,400 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:22,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [248336907] [2022-01-10 07:49:22,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [248336907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:22,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:22,401 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:49:22,401 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593184242] [2022-01-10 07:49:22,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:22,401 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:49:22,401 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:22,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:49:22,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:22,402 INFO L87 Difference]: Start difference. First operand 5475 states and 8065 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 07:49:22,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:22,934 INFO L93 Difference]: Finished difference Result 11898 states and 15951 transitions. [2022-01-10 07:49:22,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:49:22,935 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:22,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:22,948 INFO L225 Difference]: With dead ends: 11898 [2022-01-10 07:49:22,948 INFO L226 Difference]: Without dead ends: 8566 [2022-01-10 07:49:22,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:49:22,954 INFO L933 BasicCegarLoop]: 4612 mSDtfsCounter, 4394 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4394 SdHoareTripleChecker+Valid, 5143 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 07:49:22,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4394 Valid, 5143 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:22,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8566 states. [2022-01-10 07:49:23,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8566 to 8558. [2022-01-10 07:49:23,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8558 states, 8298 states have (on average 1.3875632682574115) internal successors, (11514), 8303 states have internal predecessors, (11514), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 07:49:23,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8558 states to 8558 states and 11794 transitions. [2022-01-10 07:49:23,455 INFO L78 Accepts]: Start accepts. Automaton has 8558 states and 11794 transitions. Word has length 190 [2022-01-10 07:49:23,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:23,455 INFO L470 AbstractCegarLoop]: Abstraction has 8558 states and 11794 transitions. [2022-01-10 07:49:23,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 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 07:49:23,455 INFO L276 IsEmpty]: Start isEmpty. Operand 8558 states and 11794 transitions. [2022-01-10 07:49:23,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:23,456 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:23,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:23,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:23,660 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,661 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:23,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:23,661 INFO L85 PathProgramCache]: Analyzing trace with hash 634243698, now seen corresponding path program 1 times [2022-01-10 07:49:23,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:23,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1325763931] [2022-01-10 07:49:23,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:23,662 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:23,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:23,662 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:23,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 07:49:23,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:23,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:49:23,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:23,969 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 07:49:23,969 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:23,969 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:23,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1325763931] [2022-01-10 07:49:23,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1325763931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:23,969 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:23,969 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:49:23,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753166061] [2022-01-10 07:49:23,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:23,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:23,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:23,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:23,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:23,970 INFO L87 Difference]: Start difference. First operand 8558 states and 11794 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:24,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:24,576 INFO L93 Difference]: Finished difference Result 15519 states and 20390 transitions. [2022-01-10 07:49:24,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:24,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:24,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:24,590 INFO L225 Difference]: With dead ends: 15519 [2022-01-10 07:49:24,591 INFO L226 Difference]: Without dead ends: 9104 [2022-01-10 07:49:24,598 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:24,599 INFO L933 BasicCegarLoop]: 4538 mSDtfsCounter, 49 mSDsluCounter, 13627 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 18165 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 07:49:24,599 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 18165 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:49:24,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9104 states. [2022-01-10 07:49:25,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9104 to 8636. [2022-01-10 07:49:25,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 8376 states have (on average 1.3810888252148996) internal successors, (11568), 8381 states have internal predecessors, (11568), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 07:49:25,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 11848 transitions. [2022-01-10 07:49:25,182 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 11848 transitions. Word has length 190 [2022-01-10 07:49:25,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:25,183 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 11848 transitions. [2022-01-10 07:49:25,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 07:49:25,183 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 11848 transitions. [2022-01-10 07:49:25,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:25,184 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:25,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:25,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 07:49:25,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:25,384 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:25,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:25,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1067972784, now seen corresponding path program 1 times [2022-01-10 07:49:25,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:25,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983668341] [2022-01-10 07:49:25,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:25,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:25,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:25,386 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:25,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 07:49:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:25,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:25,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:25,767 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 07:49:25,767 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:25,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:25,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983668341] [2022-01-10 07:49:25,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1983668341] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:25,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:25,768 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:25,768 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810247766] [2022-01-10 07:49:25,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:25,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:25,768 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:25,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:25,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:25,769 INFO L87 Difference]: Start difference. First operand 8636 states and 11848 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:26,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:26,679 INFO L93 Difference]: Finished difference Result 15130 states and 19715 transitions. [2022-01-10 07:49:26,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:26,680 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:26,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:26,692 INFO L225 Difference]: With dead ends: 15130 [2022-01-10 07:49:26,692 INFO L226 Difference]: Without dead ends: 8636 [2022-01-10 07:49:26,698 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:26,698 INFO L933 BasicCegarLoop]: 4502 mSDtfsCounter, 4606 mSDsluCounter, 8531 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4626 SdHoareTripleChecker+Valid, 13033 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:26,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4626 Valid, 13033 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:26,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2022-01-10 07:49:27,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 8636. [2022-01-10 07:49:27,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 8376 states have (on average 1.3794173829990448) internal successors, (11554), 8381 states have internal predecessors, (11554), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 07:49:27,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 11834 transitions. [2022-01-10 07:49:27,270 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 11834 transitions. Word has length 190 [2022-01-10 07:49:27,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:27,271 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 11834 transitions. [2022-01-10 07:49:27,271 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:27,271 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 11834 transitions. [2022-01-10 07:49:27,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:27,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:27,272 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:27,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 07:49:27,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:27,480 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:27,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:27,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1298721810, now seen corresponding path program 1 times [2022-01-10 07:49:27,481 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:27,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1793058732] [2022-01-10 07:49:27,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:27,481 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:27,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:27,482 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:27,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 07:49:27,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:27,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:27,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:27,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:49:27,876 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:27,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:27,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1793058732] [2022-01-10 07:49:27,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1793058732] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:27,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:27,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:27,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459380553] [2022-01-10 07:49:27,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:27,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:27,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:27,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:27,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:27,878 INFO L87 Difference]: Start difference. First operand 8636 states and 11834 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:28,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:28,737 INFO L93 Difference]: Finished difference Result 15130 states and 19687 transitions. [2022-01-10 07:49:28,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:49:28,738 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:28,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:28,752 INFO L225 Difference]: With dead ends: 15130 [2022-01-10 07:49:28,752 INFO L226 Difference]: Without dead ends: 8636 [2022-01-10 07:49:28,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 07:49:28,761 INFO L933 BasicCegarLoop]: 4499 mSDtfsCounter, 4593 mSDsluCounter, 8527 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4613 SdHoareTripleChecker+Valid, 13026 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:28,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4613 Valid, 13026 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:49:28,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8636 states. [2022-01-10 07:49:29,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8636 to 8636. [2022-01-10 07:49:29,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8636 states, 8376 states have (on average 1.37774594078319) internal successors, (11540), 8381 states have internal predecessors, (11540), 140 states have call successors, (140), 117 states have call predecessors, (140), 118 states have return successors, (140), 138 states have call predecessors, (140), 138 states have call successors, (140) [2022-01-10 07:49:29,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8636 states to 8636 states and 11820 transitions. [2022-01-10 07:49:29,343 INFO L78 Accepts]: Start accepts. Automaton has 8636 states and 11820 transitions. Word has length 190 [2022-01-10 07:49:29,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:29,343 INFO L470 AbstractCegarLoop]: Abstraction has 8636 states and 11820 transitions. [2022-01-10 07:49:29,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:29,344 INFO L276 IsEmpty]: Start isEmpty. Operand 8636 states and 11820 transitions. [2022-01-10 07:49:29,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:29,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:29,345 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:29,353 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-01-10 07:49:29,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,545 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:29,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:29,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1966886188, now seen corresponding path program 1 times [2022-01-10 07:49:29,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:29,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1575829112] [2022-01-10 07:49:29,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:29,546 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:29,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:29,547 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:29,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 07:49:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:29,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:29,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:29,929 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 07:49:29,929 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:29,929 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:29,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1575829112] [2022-01-10 07:49:29,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1575829112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:29,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:29,929 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:29,929 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945354552] [2022-01-10 07:49:29,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:29,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:29,930 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:29,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:29,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:29,930 INFO L87 Difference]: Start difference. First operand 8636 states and 11820 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:31,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:31,118 INFO L93 Difference]: Finished difference Result 15830 states and 20578 transitions. [2022-01-10 07:49:31,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:31,119 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:31,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:31,134 INFO L225 Difference]: With dead ends: 15830 [2022-01-10 07:49:31,134 INFO L226 Difference]: Without dead ends: 9336 [2022-01-10 07:49:31,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:31,144 INFO L933 BasicCegarLoop]: 4577 mSDtfsCounter, 4775 mSDsluCounter, 8522 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4795 SdHoareTripleChecker+Valid, 13099 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:31,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4795 Valid, 13099 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:31,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9336 states. [2022-01-10 07:49:31,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9336 to 9052. [2022-01-10 07:49:31,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9052 states, 8780 states have (on average 1.3610478359908884) internal successors, (11950), 8785 states have internal predecessors, (11950), 144 states have call successors, (144), 125 states have call predecessors, (144), 126 states have return successors, (144), 142 states have call predecessors, (144), 142 states have call successors, (144) [2022-01-10 07:49:31,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9052 states to 9052 states and 12238 transitions. [2022-01-10 07:49:31,785 INFO L78 Accepts]: Start accepts. Automaton has 9052 states and 12238 transitions. Word has length 190 [2022-01-10 07:49:31,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:49:31,785 INFO L470 AbstractCegarLoop]: Abstraction has 9052 states and 12238 transitions. [2022-01-10 07:49:31,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:31,786 INFO L276 IsEmpty]: Start isEmpty. Operand 9052 states and 12238 transitions. [2022-01-10 07:49:31,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 07:49:31,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:49:31,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:49:31,794 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 07:49:31,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,987 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:49:31,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:49:31,988 INFO L85 PathProgramCache]: Analyzing trace with hash 1989518442, now seen corresponding path program 1 times [2022-01-10 07:49:31,988 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:49:31,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1255151682] [2022-01-10 07:49:31,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:49:31,988 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:49:31,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:49:31,989 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:49:31,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 07:49:32,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:49:32,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:49:32,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:49:32,369 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 07:49:32,370 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:49:32,370 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:49:32,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1255151682] [2022-01-10 07:49:32,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1255151682] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:49:32,370 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:49:32,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:49:32,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750774614] [2022-01-10 07:49:32,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:49:32,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:49:32,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:49:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:49:32,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:49:32,371 INFO L87 Difference]: Start difference. First operand 9052 states and 12238 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 07:49:33,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:49:33,424 INFO L93 Difference]: Finished difference Result 16304 states and 20930 transitions. [2022-01-10 07:49:33,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:49:33,425 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 07:49:33,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:49:33,440 INFO L225 Difference]: With dead ends: 16304 [2022-01-10 07:49:33,440 INFO L226 Difference]: Without dead ends: 9394 [2022-01-10 07:49:33,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 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 07:49:33,450 INFO L933 BasicCegarLoop]: 4507 mSDtfsCounter, 4693 mSDsluCounter, 8518 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4713 SdHoareTripleChecker+Valid, 13025 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 07:49:33,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4713 Valid, 13025 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 07:49:33,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9394 states.