/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/systemc/token_ring.03.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:42:14,328 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:42:14,330 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:42:14,357 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:42:14,357 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:42:14,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:42:14,359 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:42:14,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:42:14,362 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:42:14,363 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:42:14,364 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:42:14,365 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:42:14,365 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:42:14,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:42:14,384 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:42:14,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:42:14,402 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:42:14,403 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:42:14,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:42:14,405 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:42:14,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:42:14,412 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:42:14,413 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:42:14,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:42:14,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 06:42:14,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 06:42:14,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 06:42:14,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 06:42:14,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 06:42:14,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 06:42:14,418 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:42:14,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:42:14,432 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:42:14,433 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:42:14,434 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:42:14,434 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:42:14,435 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:42:14,435 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:42:14,435 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:42:14,436 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:42:14,436 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:42:14,438 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 06:42:14,475 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:42:14,476 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:42:14,476 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:42:14,476 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:42:14,477 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:42:14,477 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:42:14,477 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:42:14,478 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:42:14,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:42:14,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:42:14,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:42:14,480 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:42:14,480 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:42:14,481 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:42:14,723 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:42:14,757 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:42:14,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:42:14,761 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:42:14,762 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:42:14,763 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2022-01-10 06:42:14,826 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760f9d17/f4e48d509f9a48b285ebdc25cdc05a12/FLAG913f17c12 [2022-01-10 06:42:15,240 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:42:15,241 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c [2022-01-10 06:42:15,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760f9d17/f4e48d509f9a48b285ebdc25cdc05a12/FLAG913f17c12 [2022-01-10 06:42:15,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6760f9d17/f4e48d509f9a48b285ebdc25cdc05a12 [2022-01-10 06:42:15,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:42:15,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:42:15,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:42:15,269 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:42:15,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:42:15,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ff5ea69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15, skipping insertion in model container [2022-01-10 06:42:15,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,280 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:42:15,308 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:42:15,426 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2022-01-10 06:42:15,495 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:42:15,508 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:42:15,518 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.03.cil-2.c[671,684] [2022-01-10 06:42:15,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:42:15,568 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:42:15,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15 WrapperNode [2022-01-10 06:42:15,568 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:42:15,569 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:42:15,569 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:42:15,569 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:42:15,576 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,584 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,608 INFO L137 Inliner]: procedures = 34, calls = 40, calls flagged for inlining = 18, calls inlined = 18, statements flattened = 318 [2022-01-10 06:42:15,608 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:42:15,609 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:42:15,609 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:42:15,609 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:42:15,614 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,618 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,625 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,632 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,635 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:42:15,639 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:42:15,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:42:15,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:42:15,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (1/1) ... [2022-01-10 06:42:15,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:42:15,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:42:15,672 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 06:42:15,678 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 06:42:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:42:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:42:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:42:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:42:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:42:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:42:15,702 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 06:42:15,702 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 06:42:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:42:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:42:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:42:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:42:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:42:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:42:15,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:42:15,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:42:15,777 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:42:15,778 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:42:16,105 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:42:16,113 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:42:16,113 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-01-10 06:42:16,115 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:42:16 BoogieIcfgContainer [2022-01-10 06:42:16,115 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:42:16,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:42:16,116 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:42:16,119 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:42:16,119 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:42:15" (1/3) ... [2022-01-10 06:42:16,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a73163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:42:16, skipping insertion in model container [2022-01-10 06:42:16,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:15" (2/3) ... [2022-01-10 06:42:16,120 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a73163d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:42:16, skipping insertion in model container [2022-01-10 06:42:16,120 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:42:16" (3/3) ... [2022-01-10 06:42:16,122 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.03.cil-2.c [2022-01-10 06:42:16,126 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:42:16,126 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:42:16,164 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:42:16,170 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 06:42:16,170 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:42:16,187 INFO L276 IsEmpty]: Start isEmpty. Operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-10 06:42:16,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:16,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:16,195 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] [2022-01-10 06:42:16,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:16,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:16,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1701588439, now seen corresponding path program 1 times [2022-01-10 06:42:16,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:16,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [889846322] [2022-01-10 06:42:16,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:16,212 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:16,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:16,215 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:16,238 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 06:42:16,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:16,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:16,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:16,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:16,601 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:16,602 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:16,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [889846322] [2022-01-10 06:42:16,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [889846322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:16,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:16,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:16,606 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428712437] [2022-01-10 06:42:16,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:16,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:16,613 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:16,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:16,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:16,653 INFO L87 Difference]: Start difference. First operand has 157 states, 132 states have (on average 1.5909090909090908) internal successors, (210), 134 states have internal predecessors, (210), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:16,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:16,704 INFO L93 Difference]: Finished difference Result 305 states and 475 transitions. [2022-01-10 06:42:16,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:16,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:16,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:16,722 INFO L225 Difference]: With dead ends: 305 [2022-01-10 06:42:16,722 INFO L226 Difference]: Without dead ends: 152 [2022-01-10 06:42:16,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:16,729 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 220 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:16,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [220 Valid, 228 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:16,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-01-10 06:42:16,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-01-10 06:42:16,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 128 states have (on average 1.4921875) internal successors, (191), 129 states have internal predecessors, (191), 17 states have call successors, (17), 6 states have call predecessors, (17), 6 states have return successors, (17), 17 states have call predecessors, (17), 17 states have call successors, (17) [2022-01-10 06:42:16,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 225 transitions. [2022-01-10 06:42:16,806 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 225 transitions. Word has length 78 [2022-01-10 06:42:16,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:16,808 INFO L470 AbstractCegarLoop]: Abstraction has 152 states and 225 transitions. [2022-01-10 06:42:16,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:16,808 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 225 transitions. [2022-01-10 06:42:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:16,817 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:16,817 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] [2022-01-10 06:42:16,830 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:17,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:17,018 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:17,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:17,019 INFO L85 PathProgramCache]: Analyzing trace with hash -1208962265, now seen corresponding path program 1 times [2022-01-10 06:42:17,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:17,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1379085621] [2022-01-10 06:42:17,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:17,021 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:17,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:17,024 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:17,026 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 06:42:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:17,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:17,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:17,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:17,277 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:17,277 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:17,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1379085621] [2022-01-10 06:42:17,277 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1379085621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:17,277 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:17,278 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:17,278 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987236170] [2022-01-10 06:42:17,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:17,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:17,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:17,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:17,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:17,281 INFO L87 Difference]: Start difference. First operand 152 states and 225 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:17,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:17,694 INFO L93 Difference]: Finished difference Result 446 states and 669 transitions. [2022-01-10 06:42:17,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:17,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:17,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:17,699 INFO L225 Difference]: With dead ends: 446 [2022-01-10 06:42:17,699 INFO L226 Difference]: Without dead ends: 305 [2022-01-10 06:42:17,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:17,702 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 383 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 664 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:17,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [394 Valid, 664 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:42:17,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-01-10 06:42:17,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 294. [2022-01-10 06:42:17,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 253 states have internal predecessors, (378), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 06:42:17,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 437 transitions. [2022-01-10 06:42:17,797 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 437 transitions. Word has length 78 [2022-01-10 06:42:17,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:17,797 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 437 transitions. [2022-01-10 06:42:17,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 3 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:17,798 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 437 transitions. [2022-01-10 06:42:17,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:17,799 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:17,799 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] [2022-01-10 06:42:17,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:18,003 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,004 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:18,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:18,005 INFO L85 PathProgramCache]: Analyzing trace with hash -971914069, now seen corresponding path program 1 times [2022-01-10 06:42:18,005 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:18,005 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [848603346] [2022-01-10 06:42:18,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:18,005 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:18,007 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:18,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 06:42:18,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:18,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:18,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:18,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:18,241 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:18,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [848603346] [2022-01-10 06:42:18,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [848603346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:18,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:18,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:18,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350904949] [2022-01-10 06:42:18,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:18,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:18,243 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:18,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:18,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:18,244 INFO L87 Difference]: Start difference. First operand 294 states and 437 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:18,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:18,445 INFO L93 Difference]: Finished difference Result 577 states and 865 transitions. [2022-01-10 06:42:18,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:18,446 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:18,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:18,451 INFO L225 Difference]: With dead ends: 577 [2022-01-10 06:42:18,451 INFO L226 Difference]: Without dead ends: 294 [2022-01-10 06:42:18,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:18,457 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 277 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:18,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 433 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:18,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-10 06:42:18,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-01-10 06:42:18,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.4780876494023905) internal successors, (371), 253 states have internal predecessors, (371), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 06:42:18,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 430 transitions. [2022-01-10 06:42:18,491 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 430 transitions. Word has length 78 [2022-01-10 06:42:18,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:18,492 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 430 transitions. [2022-01-10 06:42:18,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:18,492 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 430 transitions. [2022-01-10 06:42:18,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:18,493 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:18,493 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] [2022-01-10 06:42:18,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:18,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,694 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:18,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1248762065, now seen corresponding path program 1 times [2022-01-10 06:42:18,695 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:18,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [703627569] [2022-01-10 06:42:18,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:18,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:18,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:18,698 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:18,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 06:42:18,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:18,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:18,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:18,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:18,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:18,945 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:18,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [703627569] [2022-01-10 06:42:18,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [703627569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:18,945 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:18,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:18,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807805178] [2022-01-10 06:42:18,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:18,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:18,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:18,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:18,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:18,947 INFO L87 Difference]: Start difference. First operand 294 states and 430 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:19,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:19,135 INFO L93 Difference]: Finished difference Result 577 states and 851 transitions. [2022-01-10 06:42:19,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:19,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:19,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:19,138 INFO L225 Difference]: With dead ends: 577 [2022-01-10 06:42:19,138 INFO L226 Difference]: Without dead ends: 294 [2022-01-10 06:42:19,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:19,140 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 271 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:19,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [282 Valid, 426 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:19,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2022-01-10 06:42:19,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2022-01-10 06:42:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 251 states have (on average 1.450199203187251) internal successors, (364), 253 states have internal predecessors, (364), 29 states have call successors, (29), 12 states have call predecessors, (29), 13 states have return successors, (30), 29 states have call predecessors, (30), 29 states have call successors, (30) [2022-01-10 06:42:19,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 423 transitions. [2022-01-10 06:42:19,160 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 423 transitions. Word has length 78 [2022-01-10 06:42:19,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:19,161 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 423 transitions. [2022-01-10 06:42:19,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:19,161 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 423 transitions. [2022-01-10 06:42:19,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:19,162 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:19,162 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] [2022-01-10 06:42:19,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:19,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:19,372 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:19,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:19,372 INFO L85 PathProgramCache]: Analyzing trace with hash -703503317, now seen corresponding path program 1 times [2022-01-10 06:42:19,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:19,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [362969819] [2022-01-10 06:42:19,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:19,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:19,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:19,374 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:19,376 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 06:42:19,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:19,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:19,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:19,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:19,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [362969819] [2022-01-10 06:42:19,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [362969819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:19,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:19,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:19,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843006998] [2022-01-10 06:42:19,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:19,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:19,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:19,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:19,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:19,566 INFO L87 Difference]: Start difference. First operand 294 states and 423 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:19,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:19,803 INFO L93 Difference]: Finished difference Result 643 states and 937 transitions. [2022-01-10 06:42:19,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:19,812 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:19,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:19,814 INFO L225 Difference]: With dead ends: 643 [2022-01-10 06:42:19,814 INFO L226 Difference]: Without dead ends: 360 [2022-01-10 06:42:19,815 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:19,816 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 301 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:19,816 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [312 Valid, 418 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2022-01-10 06:42:19,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 360. [2022-01-10 06:42:19,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 311 states have (on average 1.4115755627009647) internal successors, (439), 313 states have internal predecessors, (439), 31 states have call successors, (31), 16 states have call predecessors, (31), 17 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 06:42:19,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 502 transitions. [2022-01-10 06:42:19,845 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 502 transitions. Word has length 78 [2022-01-10 06:42:19,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:19,845 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 502 transitions. [2022-01-10 06:42:19,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:19,845 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 502 transitions. [2022-01-10 06:42:19,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:19,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:19,849 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] [2022-01-10 06:42:19,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:20,058 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:20,058 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:20,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:20,059 INFO L85 PathProgramCache]: Analyzing trace with hash -821145488, now seen corresponding path program 1 times [2022-01-10 06:42:20,059 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:20,059 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1055917501] [2022-01-10 06:42:20,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:20,060 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:20,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:20,061 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:20,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 06:42:20,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:20,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:20,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:20,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:20,284 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:20,284 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:20,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1055917501] [2022-01-10 06:42:20,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1055917501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:20,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:20,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:20,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29691659] [2022-01-10 06:42:20,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:20,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:20,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:20,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:20,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:20,287 INFO L87 Difference]: Start difference. First operand 360 states and 502 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:20,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:20,515 INFO L93 Difference]: Finished difference Result 775 states and 1095 transitions. [2022-01-10 06:42:20,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:20,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:20,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:20,519 INFO L225 Difference]: With dead ends: 775 [2022-01-10 06:42:20,519 INFO L226 Difference]: Without dead ends: 426 [2022-01-10 06:42:20,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:20,521 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 294 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 305 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:20,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [305 Valid, 412 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:20,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-01-10 06:42:20,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 426. [2022-01-10 06:42:20,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 426 states, 371 states have (on average 1.3746630727762803) internal successors, (510), 373 states have internal predecessors, (510), 33 states have call successors, (33), 20 states have call predecessors, (33), 21 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 06:42:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 426 states to 426 states and 577 transitions. [2022-01-10 06:42:20,545 INFO L78 Accepts]: Start accepts. Automaton has 426 states and 577 transitions. Word has length 78 [2022-01-10 06:42:20,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:20,545 INFO L470 AbstractCegarLoop]: Abstraction has 426 states and 577 transitions. [2022-01-10 06:42:20,546 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:20,546 INFO L276 IsEmpty]: Start isEmpty. Operand 426 states and 577 transitions. [2022-01-10 06:42:20,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:20,546 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:20,547 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] [2022-01-10 06:42:20,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:20,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:20,756 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:20,756 INFO L85 PathProgramCache]: Analyzing trace with hash -400466836, now seen corresponding path program 1 times [2022-01-10 06:42:20,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:20,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2091514328] [2022-01-10 06:42:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:20,757 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:20,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:20,758 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:20,760 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 06:42:20,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:20,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:20,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:20,940 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:20,941 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:20,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2091514328] [2022-01-10 06:42:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2091514328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:20,941 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837577760] [2022-01-10 06:42:20,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:20,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:20,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:20,942 INFO L87 Difference]: Start difference. First operand 426 states and 577 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:21,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:21,166 INFO L93 Difference]: Finished difference Result 907 states and 1245 transitions. [2022-01-10 06:42:21,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:21,167 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:21,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:21,170 INFO L225 Difference]: With dead ends: 907 [2022-01-10 06:42:21,171 INFO L226 Difference]: Without dead ends: 492 [2022-01-10 06:42:21,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:21,175 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 288 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 403 SdHoareTripleChecker+Invalid, 207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:21,175 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 403 Invalid, 207 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:21,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2022-01-10 06:42:21,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 492. [2022-01-10 06:42:21,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 492 states, 431 states have (on average 1.3387470997679813) internal successors, (577), 433 states have internal predecessors, (577), 35 states have call successors, (35), 24 states have call predecessors, (35), 25 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:21,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 492 states to 492 states and 648 transitions. [2022-01-10 06:42:21,203 INFO L78 Accepts]: Start accepts. Automaton has 492 states and 648 transitions. Word has length 78 [2022-01-10 06:42:21,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:21,203 INFO L470 AbstractCegarLoop]: Abstraction has 492 states and 648 transitions. [2022-01-10 06:42:21,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:21,203 INFO L276 IsEmpty]: Start isEmpty. Operand 492 states and 648 transitions. [2022-01-10 06:42:21,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:21,204 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:21,204 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:21,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:21,413 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:21,414 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:21,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:21,414 INFO L85 PathProgramCache]: Analyzing trace with hash -324941777, now seen corresponding path program 1 times [2022-01-10 06:42:21,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:21,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1959093969] [2022-01-10 06:42:21,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:21,415 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:21,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:21,416 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:21,417 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 06:42:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:21,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:21,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:21,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:21,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:21,606 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:21,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1959093969] [2022-01-10 06:42:21,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1959093969] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:21,607 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:21,607 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:21,607 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67094507] [2022-01-10 06:42:21,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:21,607 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:21,607 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:21,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:21,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:21,608 INFO L87 Difference]: Start difference. First operand 492 states and 648 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:21,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:21,851 INFO L93 Difference]: Finished difference Result 1033 states and 1379 transitions. [2022-01-10 06:42:21,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:21,854 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:21,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:21,858 INFO L225 Difference]: With dead ends: 1033 [2022-01-10 06:42:21,858 INFO L226 Difference]: Without dead ends: 552 [2022-01-10 06:42:21,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:21,860 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 281 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:21,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [292 Valid, 396 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:21,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2022-01-10 06:42:21,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2022-01-10 06:42:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 489 states have (on average 1.3047034764826175) internal successors, (638), 491 states have internal predecessors, (638), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:21,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 709 transitions. [2022-01-10 06:42:21,887 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 709 transitions. Word has length 78 [2022-01-10 06:42:21,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:21,888 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 709 transitions. [2022-01-10 06:42:21,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:21,888 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 709 transitions. [2022-01-10 06:42:21,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:21,889 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:21,889 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] [2022-01-10 06:42:21,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:22,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:22,099 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:22,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:22,100 INFO L85 PathProgramCache]: Analyzing trace with hash 342587948, now seen corresponding path program 1 times [2022-01-10 06:42:22,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:22,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215470492] [2022-01-10 06:42:22,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:22,100 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:22,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:22,101 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:22,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 06:42:22,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:22,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:22,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:22,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:22,269 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:22,269 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:22,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215470492] [2022-01-10 06:42:22,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215470492] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:22,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:22,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:42:22,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603032564] [2022-01-10 06:42:22,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:22,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:22,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:22,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:22,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:22,272 INFO L87 Difference]: Start difference. First operand 552 states and 709 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:22,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:22,325 INFO L93 Difference]: Finished difference Result 1190 states and 1544 transitions. [2022-01-10 06:42:22,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:22,325 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:22,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:22,329 INFO L225 Difference]: With dead ends: 1190 [2022-01-10 06:42:22,329 INFO L226 Difference]: Without dead ends: 650 [2022-01-10 06:42:22,331 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:42:22,331 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 127 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 860 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:22,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 860 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:22,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2022-01-10 06:42:22,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 558. [2022-01-10 06:42:22,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 495 states have (on average 1.284848484848485) internal successors, (636), 497 states have internal predecessors, (636), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:22,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 707 transitions. [2022-01-10 06:42:22,365 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 707 transitions. Word has length 78 [2022-01-10 06:42:22,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:22,365 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 707 transitions. [2022-01-10 06:42:22,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:22,365 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 707 transitions. [2022-01-10 06:42:22,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:22,366 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:22,366 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] [2022-01-10 06:42:22,377 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:22,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:22,578 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:22,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:22,578 INFO L85 PathProgramCache]: Analyzing trace with hash 327069230, now seen corresponding path program 1 times [2022-01-10 06:42:22,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:22,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1007531569] [2022-01-10 06:42:22,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:22,579 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:22,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:22,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:22,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 06:42:22,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:22,638 INFO L263 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:22,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:22,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:22,754 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:22,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1007531569] [2022-01-10 06:42:22,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1007531569] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:22,755 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:22,755 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:42:22,755 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431683363] [2022-01-10 06:42:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:22,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:22,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:22,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:22,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:22,756 INFO L87 Difference]: Start difference. First operand 558 states and 707 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:22,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:22,807 INFO L93 Difference]: Finished difference Result 1174 states and 1504 transitions. [2022-01-10 06:42:22,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:22,808 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:22,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:22,810 INFO L225 Difference]: With dead ends: 1174 [2022-01-10 06:42:22,810 INFO L226 Difference]: Without dead ends: 628 [2022-01-10 06:42:22,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:42:22,812 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 88 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 845 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:22,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 845 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:22,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2022-01-10 06:42:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 564. [2022-01-10 06:42:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 501 states have (on average 1.2654690618762474) internal successors, (634), 503 states have internal predecessors, (634), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:22,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 705 transitions. [2022-01-10 06:42:22,842 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 705 transitions. Word has length 78 [2022-01-10 06:42:22,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:22,842 INFO L470 AbstractCegarLoop]: Abstraction has 564 states and 705 transitions. [2022-01-10 06:42:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 705 transitions. [2022-01-10 06:42:22,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:22,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:22,843 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] [2022-01-10 06:42:22,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:23,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,053 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:23,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:23,053 INFO L85 PathProgramCache]: Analyzing trace with hash -570324048, now seen corresponding path program 1 times [2022-01-10 06:42:23,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:23,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275352625] [2022-01-10 06:42:23,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:23,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:23,055 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:23,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 06:42:23,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:23,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:23,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:23,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:23,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:23,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:23,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275352625] [2022-01-10 06:42:23,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275352625] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:23,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:23,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:42:23,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766770231] [2022-01-10 06:42:23,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:23,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:23,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:23,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:23,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:23,236 INFO L87 Difference]: Start difference. First operand 564 states and 705 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:23,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:23,288 INFO L93 Difference]: Finished difference Result 1158 states and 1464 transitions. [2022-01-10 06:42:23,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:23,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:23,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:23,291 INFO L225 Difference]: With dead ends: 1158 [2022-01-10 06:42:23,292 INFO L226 Difference]: Without dead ends: 606 [2022-01-10 06:42:23,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:42:23,294 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 49 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 830 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:23,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 830 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:23,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 606 states. [2022-01-10 06:42:23,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 606 to 570. [2022-01-10 06:42:23,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 507 states have (on average 1.2465483234714003) internal successors, (632), 509 states have internal predecessors, (632), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:23,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 703 transitions. [2022-01-10 06:42:23,323 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 703 transitions. Word has length 78 [2022-01-10 06:42:23,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:23,324 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 703 transitions. [2022-01-10 06:42:23,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:23,324 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 703 transitions. [2022-01-10 06:42:23,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:23,325 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:23,325 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] [2022-01-10 06:42:23,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:23,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,534 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:23,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:23,534 INFO L85 PathProgramCache]: Analyzing trace with hash 89207474, now seen corresponding path program 1 times [2022-01-10 06:42:23,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:23,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444554411] [2022-01-10 06:42:23,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:23,535 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:23,536 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:23,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 06:42:23,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:23,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:23,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:23,701 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 06:42:23,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:23,701 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:23,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444554411] [2022-01-10 06:42:23,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444554411] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:23,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:23,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:42:23,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417302756] [2022-01-10 06:42:23,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:23,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:23,702 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:23,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:23,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:23,703 INFO L87 Difference]: Start difference. First operand 570 states and 703 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:23,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:23,748 INFO L93 Difference]: Finished difference Result 1142 states and 1424 transitions. [2022-01-10 06:42:23,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:23,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:23,752 INFO L225 Difference]: With dead ends: 1142 [2022-01-10 06:42:23,753 INFO L226 Difference]: Without dead ends: 584 [2022-01-10 06:42:23,754 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:42:23,755 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 10 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:23,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 815 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:23,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-10 06:42:23,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 576. [2022-01-10 06:42:23,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 513 states have (on average 1.2280701754385965) internal successors, (630), 515 states have internal predecessors, (630), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:23,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 701 transitions. [2022-01-10 06:42:23,784 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 701 transitions. Word has length 78 [2022-01-10 06:42:23,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:23,785 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 701 transitions. [2022-01-10 06:42:23,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:23,785 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 701 transitions. [2022-01-10 06:42:23,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:23,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:23,786 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] [2022-01-10 06:42:23,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:23,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,995 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:23,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:23,995 INFO L85 PathProgramCache]: Analyzing trace with hash 790807348, now seen corresponding path program 1 times [2022-01-10 06:42:23,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:23,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1848026046] [2022-01-10 06:42:23,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:23,996 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:23,996 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:23,997 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:23,999 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 06:42:24,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:24,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:42:24,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:24,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:24,197 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:24,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:24,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1848026046] [2022-01-10 06:42:24,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1848026046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:24,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:24,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:24,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13081225] [2022-01-10 06:42:24,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:24,198 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:24,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:24,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:24,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:24,199 INFO L87 Difference]: Start difference. First operand 576 states and 701 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:24,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:24,397 INFO L93 Difference]: Finished difference Result 1141 states and 1393 transitions. [2022-01-10 06:42:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:24,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 78 [2022-01-10 06:42:24,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:24,400 INFO L225 Difference]: With dead ends: 1141 [2022-01-10 06:42:24,400 INFO L226 Difference]: Without dead ends: 576 [2022-01-10 06:42:24,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:24,402 INFO L933 BasicCegarLoop]: 184 mSDtfsCounter, 213 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:24,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [223 Valid, 391 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:24,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-10 06:42:24,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 576. [2022-01-10 06:42:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 513 states have (on average 1.2144249512670566) internal successors, (623), 515 states have internal predecessors, (623), 35 states have call successors, (35), 26 states have call predecessors, (35), 27 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 06:42:24,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 694 transitions. [2022-01-10 06:42:24,438 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 694 transitions. Word has length 78 [2022-01-10 06:42:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:24,438 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 694 transitions. [2022-01-10 06:42:24,438 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:24,438 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 694 transitions. [2022-01-10 06:42:24,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-01-10 06:42:24,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:24,439 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] [2022-01-10 06:42:24,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:24,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:24,649 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:24,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:24,649 INFO L85 PathProgramCache]: Analyzing trace with hash 852846962, now seen corresponding path program 1 times [2022-01-10 06:42:24,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:24,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2050531556] [2022-01-10 06:42:24,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:24,650 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:24,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:24,651 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:24,653 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:42:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:24,714 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:24,716 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:24,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:24,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:24,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:24,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2050531556] [2022-01-10 06:42:24,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2050531556] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:24,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:24,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:42:24,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103682851] [2022-01-10 06:42:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:24,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:24,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:24,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:24,867 INFO L87 Difference]: Start difference. First operand 576 states and 694 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:42:24,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:24,926 INFO L93 Difference]: Finished difference Result 1679 states and 2033 transitions. [2022-01-10 06:42:24,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:24,926 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 78 [2022-01-10 06:42:24,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:24,930 INFO L225 Difference]: With dead ends: 1679 [2022-01-10 06:42:24,930 INFO L226 Difference]: Without dead ends: 1115 [2022-01-10 06:42:24,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:24,933 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 118 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:24,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 423 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:24,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1115 states. [2022-01-10 06:42:24,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1115 to 1113. [2022-01-10 06:42:24,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1113 states, 992 states have (on average 1.1985887096774193) internal successors, (1189), 997 states have internal predecessors, (1189), 66 states have call successors, (66), 52 states have call predecessors, (66), 54 states have return successors, (68), 64 states have call predecessors, (68), 66 states have call successors, (68) [2022-01-10 06:42:24,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1113 states to 1113 states and 1323 transitions. [2022-01-10 06:42:24,988 INFO L78 Accepts]: Start accepts. Automaton has 1113 states and 1323 transitions. Word has length 78 [2022-01-10 06:42:24,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:24,989 INFO L470 AbstractCegarLoop]: Abstraction has 1113 states and 1323 transitions. [2022-01-10 06:42:24,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 2 states have internal predecessors, (68), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:42:24,989 INFO L276 IsEmpty]: Start isEmpty. Operand 1113 states and 1323 transitions. [2022-01-10 06:42:24,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:42:24,990 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:24,990 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:24,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:25,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:25,199 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash 953418281, now seen corresponding path program 1 times [2022-01-10 06:42:25,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:25,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1972297302] [2022-01-10 06:42:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:25,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:25,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:25,202 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:25,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:42:25,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:25,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:42:25,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:25,502 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:25,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:25,502 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:25,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1972297302] [2022-01-10 06:42:25,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1972297302] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:25,503 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:25,503 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:25,503 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091708198] [2022-01-10 06:42:25,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:25,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:42:25,504 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:25,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:42:25,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:42:25,505 INFO L87 Difference]: Start difference. First operand 1113 states and 1323 transitions. Second operand has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:25,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:25,765 INFO L93 Difference]: Finished difference Result 3205 states and 3815 transitions. [2022-01-10 06:42:25,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:25,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 127 [2022-01-10 06:42:25,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:25,774 INFO L225 Difference]: With dead ends: 3205 [2022-01-10 06:42:25,774 INFO L226 Difference]: Without dead ends: 2105 [2022-01-10 06:42:25,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:25,779 INFO L933 BasicCegarLoop]: 273 mSDtfsCounter, 224 mSDsluCounter, 301 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 574 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:25,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 574 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:25,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2105 states. [2022-01-10 06:42:25,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2105 to 2103. [2022-01-10 06:42:25,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2103 states, 1871 states have (on average 1.1870657402458578) internal successors, (2221), 1885 states have internal predecessors, (2221), 123 states have call successors, (123), 96 states have call predecessors, (123), 108 states have return successors, (147), 123 states have call predecessors, (147), 123 states have call successors, (147) [2022-01-10 06:42:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2103 states to 2103 states and 2491 transitions. [2022-01-10 06:42:25,893 INFO L78 Accepts]: Start accepts. Automaton has 2103 states and 2491 transitions. Word has length 127 [2022-01-10 06:42:25,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:25,894 INFO L470 AbstractCegarLoop]: Abstraction has 2103 states and 2491 transitions. [2022-01-10 06:42:25,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.5) internal successors, (86), 4 states have internal predecessors, (86), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:25,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2103 states and 2491 transitions. [2022-01-10 06:42:25,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-01-10 06:42:25,896 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:25,897 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:25,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:26,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:26,109 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:26,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:26,109 INFO L85 PathProgramCache]: Analyzing trace with hash -328754005, now seen corresponding path program 1 times [2022-01-10 06:42:26,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:26,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [344443069] [2022-01-10 06:42:26,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:26,110 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:26,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:26,111 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:26,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:42:26,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:26,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:26,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:42:26,351 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:26,351 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:26,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [344443069] [2022-01-10 06:42:26,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [344443069] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:26,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:26,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:26,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769667299] [2022-01-10 06:42:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:26,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:26,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:26,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:26,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:26,353 INFO L87 Difference]: Start difference. First operand 2103 states and 2491 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:42:26,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:26,482 INFO L93 Difference]: Finished difference Result 4187 states and 4952 transitions. [2022-01-10 06:42:26,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:26,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 127 [2022-01-10 06:42:26,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:26,492 INFO L225 Difference]: With dead ends: 4187 [2022-01-10 06:42:26,492 INFO L226 Difference]: Without dead ends: 2097 [2022-01-10 06:42:26,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:26,498 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 195 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:26,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 202 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:26,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2097 states. [2022-01-10 06:42:26,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2097 to 2097. [2022-01-10 06:42:26,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2097 states, 1868 states have (on average 1.1862955032119915) internal successors, (2216), 1881 states have internal predecessors, (2216), 120 states have call successors, (120), 96 states have call predecessors, (120), 108 states have return successors, (144), 120 states have call predecessors, (144), 120 states have call successors, (144) [2022-01-10 06:42:26,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2097 states to 2097 states and 2480 transitions. [2022-01-10 06:42:26,617 INFO L78 Accepts]: Start accepts. Automaton has 2097 states and 2480 transitions. Word has length 127 [2022-01-10 06:42:26,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:26,617 INFO L470 AbstractCegarLoop]: Abstraction has 2097 states and 2480 transitions. [2022-01-10 06:42:26,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:42:26,618 INFO L276 IsEmpty]: Start isEmpty. Operand 2097 states and 2480 transitions. [2022-01-10 06:42:26,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-01-10 06:42:26,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:26,620 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:26,633 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Ended with exit code 0 [2022-01-10 06:42:26,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:26,830 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:26,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 598738907, now seen corresponding path program 1 times [2022-01-10 06:42:26,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [183339581] [2022-01-10 06:42:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:26,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:26,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:26,832 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:26,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:42:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:26,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:42:26,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:27,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:27,156 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:27,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [183339581] [2022-01-10 06:42:27,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [183339581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:27,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:27,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:27,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57940637] [2022-01-10 06:42:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:27,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:42:27,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:27,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:42:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:42:27,158 INFO L87 Difference]: Start difference. First operand 2097 states and 2480 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:27,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:27,488 INFO L93 Difference]: Finished difference Result 5949 states and 7042 transitions. [2022-01-10 06:42:27,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:27,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 128 [2022-01-10 06:42:27,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:27,506 INFO L225 Difference]: With dead ends: 5949 [2022-01-10 06:42:27,506 INFO L226 Difference]: Without dead ends: 3865 [2022-01-10 06:42:27,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:27,514 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 225 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:27,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [231 Valid, 431 Invalid, 148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:27,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3865 states. [2022-01-10 06:42:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3865 to 3863. [2022-01-10 06:42:27,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3863 states, 3434 states have (on average 1.178800232964473) internal successors, (4048), 3463 states have internal predecessors, (4048), 220 states have call successors, (220), 176 states have call predecessors, (220), 208 states have return successors, (288), 224 states have call predecessors, (288), 220 states have call successors, (288) [2022-01-10 06:42:27,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3863 states to 3863 states and 4556 transitions. [2022-01-10 06:42:27,772 INFO L78 Accepts]: Start accepts. Automaton has 3863 states and 4556 transitions. Word has length 128 [2022-01-10 06:42:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 3863 states and 4556 transitions. [2022-01-10 06:42:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3863 states and 4556 transitions. [2022-01-10 06:42:27,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:42:27,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:27,776 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:27,787 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 06:42:27,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:27,986 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:27,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:27,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1986080795, now seen corresponding path program 1 times [2022-01-10 06:42:27,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:27,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1980925782] [2022-01-10 06:42:27,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:27,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:27,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:27,988 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:27,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:42:28,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:28,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:42:28,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:28,312 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:28,312 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:28,312 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:28,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1980925782] [2022-01-10 06:42:28,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1980925782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:28,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:28,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:28,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945962080] [2022-01-10 06:42:28,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:28,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:42:28,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:42:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:42:28,313 INFO L87 Difference]: Start difference. First operand 3863 states and 4556 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:28,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:28,783 INFO L93 Difference]: Finished difference Result 10911 states and 12885 transitions. [2022-01-10 06:42:28,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:28,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 129 [2022-01-10 06:42:28,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:28,810 INFO L225 Difference]: With dead ends: 10911 [2022-01-10 06:42:28,810 INFO L226 Difference]: Without dead ends: 7061 [2022-01-10 06:42:28,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:28,819 INFO L933 BasicCegarLoop]: 245 mSDtfsCounter, 212 mSDsluCounter, 257 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:28,819 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [218 Valid, 502 Invalid, 154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 06:42:28,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7061 states. [2022-01-10 06:42:29,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7061 to 7059. [2022-01-10 06:42:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7059 states, 6251 states have (on average 1.1737322028475443) internal successors, (7337), 6317 states have internal predecessors, (7337), 407 states have call successors, (407), 320 states have call predecessors, (407), 400 states have return successors, (571), 423 states have call predecessors, (571), 407 states have call successors, (571) [2022-01-10 06:42:29,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7059 states to 7059 states and 8315 transitions. [2022-01-10 06:42:29,265 INFO L78 Accepts]: Start accepts. Automaton has 7059 states and 8315 transitions. Word has length 129 [2022-01-10 06:42:29,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:29,265 INFO L470 AbstractCegarLoop]: Abstraction has 7059 states and 8315 transitions. [2022-01-10 06:42:29,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:42:29,266 INFO L276 IsEmpty]: Start isEmpty. Operand 7059 states and 8315 transitions. [2022-01-10 06:42:29,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-01-10 06:42:29,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:29,272 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:29,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:29,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:29,484 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:29,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:29,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1026714215, now seen corresponding path program 1 times [2022-01-10 06:42:29,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:29,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842394837] [2022-01-10 06:42:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:29,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:29,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:29,486 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:29,521 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:42:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:29,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:29,573 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:29,717 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-01-10 06:42:29,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:29,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:29,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1842394837] [2022-01-10 06:42:29,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1842394837] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:29,717 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:29,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:29,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922398905] [2022-01-10 06:42:29,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:29,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:29,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:29,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:29,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:29,719 INFO L87 Difference]: Start difference. First operand 7059 states and 8315 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:42:30,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:30,112 INFO L93 Difference]: Finished difference Result 14101 states and 16604 transitions. [2022-01-10 06:42:30,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:30,112 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 129 [2022-01-10 06:42:30,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:30,154 INFO L225 Difference]: With dead ends: 14101 [2022-01-10 06:42:30,154 INFO L226 Difference]: Without dead ends: 7055 [2022-01-10 06:42:30,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:30,173 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 192 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 201 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:30,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 201 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:30,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7055 states. [2022-01-10 06:42:30,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7055 to 7055. [2022-01-10 06:42:30,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7055 states, 6250 states have (on average 1.1736) internal successors, (7335), 6315 states have internal predecessors, (7335), 404 states have call successors, (404), 320 states have call predecessors, (404), 400 states have return successors, (568), 420 states have call predecessors, (568), 404 states have call successors, (568) [2022-01-10 06:42:30,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7055 states to 7055 states and 8307 transitions. [2022-01-10 06:42:30,603 INFO L78 Accepts]: Start accepts. Automaton has 7055 states and 8307 transitions. Word has length 129 [2022-01-10 06:42:30,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:30,603 INFO L470 AbstractCegarLoop]: Abstraction has 7055 states and 8307 transitions. [2022-01-10 06:42:30,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:42:30,603 INFO L276 IsEmpty]: Start isEmpty. Operand 7055 states and 8307 transitions. [2022-01-10 06:42:30,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2022-01-10 06:42:30,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:30,641 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:30,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:30,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:30,841 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1625288161, now seen corresponding path program 1 times [2022-01-10 06:42:30,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:30,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1581428356] [2022-01-10 06:42:30,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:30,842 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:30,842 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:30,843 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:30,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:42:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:30,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:30,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:31,094 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:31,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:31,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:31,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1581428356] [2022-01-10 06:42:31,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1581428356] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:31,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:31,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:31,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436444450] [2022-01-10 06:42:31,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:31,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:31,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:31,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:31,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:31,096 INFO L87 Difference]: Start difference. First operand 7055 states and 8307 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:42:31,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:31,576 INFO L93 Difference]: Finished difference Result 19496 states and 23070 transitions. [2022-01-10 06:42:31,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:31,577 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 130 [2022-01-10 06:42:31,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:31,618 INFO L225 Difference]: With dead ends: 19496 [2022-01-10 06:42:31,618 INFO L226 Difference]: Without dead ends: 9783 [2022-01-10 06:42:31,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:31,640 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 165 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:31,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 562 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:31,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9783 states. [2022-01-10 06:42:32,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9783 to 9783. [2022-01-10 06:42:32,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9783 states, 8658 states have (on average 1.1707091707091708) internal successors, (10136), 8739 states have internal predecessors, (10136), 572 states have call successors, (572), 448 states have call predecessors, (572), 552 states have return successors, (818), 596 states have call predecessors, (818), 572 states have call successors, (818) [2022-01-10 06:42:32,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9783 states to 9783 states and 11526 transitions. [2022-01-10 06:42:32,246 INFO L78 Accepts]: Start accepts. Automaton has 9783 states and 11526 transitions. Word has length 130 [2022-01-10 06:42:32,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:32,246 INFO L470 AbstractCegarLoop]: Abstraction has 9783 states and 11526 transitions. [2022-01-10 06:42:32,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 06:42:32,247 INFO L276 IsEmpty]: Start isEmpty. Operand 9783 states and 11526 transitions. [2022-01-10 06:42:32,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 06:42:32,255 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:32,255 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:32,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:32,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:32,464 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:32,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:32,465 INFO L85 PathProgramCache]: Analyzing trace with hash 389459983, now seen corresponding path program 1 times [2022-01-10 06:42:32,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:32,465 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705697685] [2022-01-10 06:42:32,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:32,465 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:32,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:32,466 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:32,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:42:32,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:32,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:32,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:32,808 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:32,808 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:32,808 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:32,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705697685] [2022-01-10 06:42:32,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705697685] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:32,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:32,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:42:32,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493106127] [2022-01-10 06:42:32,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:32,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:32,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:32,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:32,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:32,809 INFO L87 Difference]: Start difference. First operand 9783 states and 11526 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:42:33,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:33,250 INFO L93 Difference]: Finished difference Result 22306 states and 26338 transitions. [2022-01-10 06:42:33,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:33,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 167 [2022-01-10 06:42:33,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:33,320 INFO L225 Difference]: With dead ends: 22306 [2022-01-10 06:42:33,320 INFO L226 Difference]: Without dead ends: 12535 [2022-01-10 06:42:33,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:33,345 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 88 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:33,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 390 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:33,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12535 states. [2022-01-10 06:42:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12535 to 12487. [2022-01-10 06:42:33,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12487 states, 11042 states have (on average 1.1628328201412788) internal successors, (12840), 11139 states have internal predecessors, (12840), 740 states have call successors, (740), 576 states have call predecessors, (740), 704 states have return successors, (1046), 772 states have call predecessors, (1046), 740 states have call successors, (1046) [2022-01-10 06:42:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12487 states to 12487 states and 14626 transitions. [2022-01-10 06:42:33,945 INFO L78 Accepts]: Start accepts. Automaton has 12487 states and 14626 transitions. Word has length 167 [2022-01-10 06:42:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:33,945 INFO L470 AbstractCegarLoop]: Abstraction has 12487 states and 14626 transitions. [2022-01-10 06:42:33,946 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 06:42:33,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12487 states and 14626 transitions. [2022-01-10 06:42:33,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-01-10 06:42:33,958 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:33,958 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:33,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:34,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:34,168 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:34,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1310306477, now seen corresponding path program 1 times [2022-01-10 06:42:34,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:34,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [984809121] [2022-01-10 06:42:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:34,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:34,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:34,170 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:34,171 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:42:34,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:34,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:34,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-01-10 06:42:34,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:34,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:34,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [984809121] [2022-01-10 06:42:34,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [984809121] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:34,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:34,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:34,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979845164] [2022-01-10 06:42:34,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:34,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:42:34,566 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:34,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:42:34,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:42:34,566 INFO L87 Difference]: Start difference. First operand 12487 states and 14626 transitions. Second operand has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:42:35,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:35,526 INFO L93 Difference]: Finished difference Result 25091 states and 29459 transitions. [2022-01-10 06:42:35,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:35,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 187 [2022-01-10 06:42:35,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:35,574 INFO L225 Difference]: With dead ends: 25091 [2022-01-10 06:42:35,574 INFO L226 Difference]: Without dead ends: 12617 [2022-01-10 06:42:35,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 185 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:35,608 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 231 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 448 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:35,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [237 Valid, 448 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:35,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12617 states. [2022-01-10 06:42:36,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12617 to 12617. [2022-01-10 06:42:36,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12617 states, 11156 states have (on average 1.1531014700609536) internal successors, (12864), 11261 states have internal predecessors, (12864), 740 states have call successors, (740), 576 states have call predecessors, (740), 720 states have return successors, (944), 780 states have call predecessors, (944), 740 states have call successors, (944) [2022-01-10 06:42:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12617 states to 12617 states and 14548 transitions. [2022-01-10 06:42:36,351 INFO L78 Accepts]: Start accepts. Automaton has 12617 states and 14548 transitions. Word has length 187 [2022-01-10 06:42:36,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:36,352 INFO L470 AbstractCegarLoop]: Abstraction has 12617 states and 14548 transitions. [2022-01-10 06:42:36,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.0) internal successors, (124), 4 states have internal predecessors, (124), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 06:42:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 12617 states and 14548 transitions. [2022-01-10 06:42:36,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-01-10 06:42:36,365 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:36,365 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:36,375 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 06:42:36,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:36,575 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:36,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:36,576 INFO L85 PathProgramCache]: Analyzing trace with hash -411765640, now seen corresponding path program 1 times [2022-01-10 06:42:36,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:36,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1202957077] [2022-01-10 06:42:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:36,576 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:36,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:36,578 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:36,580 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:42:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:36,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:36,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 06:42:36,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:36,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:36,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1202957077] [2022-01-10 06:42:36,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1202957077] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:36,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:36,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:36,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248812854] [2022-01-10 06:42:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:36,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:36,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:36,956 INFO L87 Difference]: Start difference. First operand 12617 states and 14548 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:42:37,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:37,507 INFO L93 Difference]: Finished difference Result 22533 states and 26034 transitions. [2022-01-10 06:42:37,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:37,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 188 [2022-01-10 06:42:37,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:37,547 INFO L225 Difference]: With dead ends: 22533 [2022-01-10 06:42:37,548 INFO L226 Difference]: Without dead ends: 12619 [2022-01-10 06:42:37,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:37,564 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 151 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 548 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:37,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 548 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12619 states. [2022-01-10 06:42:38,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12619 to 12617. [2022-01-10 06:42:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12617 states, 11156 states have (on average 1.1507708856220868) internal successors, (12838), 11261 states have internal predecessors, (12838), 740 states have call successors, (740), 576 states have call predecessors, (740), 720 states have return successors, (938), 780 states have call predecessors, (938), 740 states have call successors, (938) [2022-01-10 06:42:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12617 states to 12617 states and 14516 transitions. [2022-01-10 06:42:38,169 INFO L78 Accepts]: Start accepts. Automaton has 12617 states and 14516 transitions. Word has length 188 [2022-01-10 06:42:38,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:38,170 INFO L470 AbstractCegarLoop]: Abstraction has 12617 states and 14516 transitions. [2022-01-10 06:42:38,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 06:42:38,170 INFO L276 IsEmpty]: Start isEmpty. Operand 12617 states and 14516 transitions. [2022-01-10 06:42:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2022-01-10 06:42:38,183 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:38,184 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:38,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 06:42:38,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:38,393 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:38,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 227677074, now seen corresponding path program 1 times [2022-01-10 06:42:38,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:38,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [89665266] [2022-01-10 06:42:38,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:38,394 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:38,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:38,395 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:38,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:42:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:38,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:38,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:38,839 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 134 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-01-10 06:42:38,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:38,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:38,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [89665266] [2022-01-10 06:42:38,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [89665266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:38,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:38,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:42:38,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795406854] [2022-01-10 06:42:38,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:38,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:38,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:38,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:38,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:38,841 INFO L87 Difference]: Start difference. First operand 12617 states and 14516 transitions. Second operand has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:42:39,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:39,458 INFO L93 Difference]: Finished difference Result 27608 states and 31790 transitions. [2022-01-10 06:42:39,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:39,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 225 [2022-01-10 06:42:39,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:39,515 INFO L225 Difference]: With dead ends: 27608 [2022-01-10 06:42:39,515 INFO L226 Difference]: Without dead ends: 15003 [2022-01-10 06:42:39,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 224 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:39,542 INFO L933 BasicCegarLoop]: 210 mSDtfsCounter, 69 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:39,543 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 387 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:39,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15003 states. [2022-01-10 06:42:40,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15003 to 14939. [2022-01-10 06:42:40,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 13198 states have (on average 1.1439612062433702) internal successors, (15098), 13315 states have internal predecessors, (15098), 892 states have call successors, (892), 688 states have call predecessors, (892), 848 states have return successors, (1118), 936 states have call predecessors, (1118), 892 states have call successors, (1118) [2022-01-10 06:42:40,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 17108 transitions. [2022-01-10 06:42:40,455 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 17108 transitions. Word has length 225 [2022-01-10 06:42:40,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:40,456 INFO L470 AbstractCegarLoop]: Abstraction has 14939 states and 17108 transitions. [2022-01-10 06:42:40,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 48.333333333333336) internal successors, (145), 2 states have internal predecessors, (145), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-01-10 06:42:40,456 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 17108 transitions. [2022-01-10 06:42:40,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2022-01-10 06:42:40,474 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:40,474 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:40,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 06:42:40,684 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:40,684 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:40,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:40,685 INFO L85 PathProgramCache]: Analyzing trace with hash -916703093, now seen corresponding path program 1 times [2022-01-10 06:42:40,685 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:40,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [86543603] [2022-01-10 06:42:40,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:40,685 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:40,685 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:40,686 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:40,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:42:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:40,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 398 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:40,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:41,097 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-01-10 06:42:41,098 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:41,098 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:41,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [86543603] [2022-01-10 06:42:41,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [86543603] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:41,098 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:41,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:41,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496725025] [2022-01-10 06:42:41,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:41,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:41,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:41,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:41,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:41,099 INFO L87 Difference]: Start difference. First operand 14939 states and 17108 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:42:41,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:41,868 INFO L93 Difference]: Finished difference Result 27545 states and 31608 transitions. [2022-01-10 06:42:41,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:41,869 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 229 [2022-01-10 06:42:41,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:41,908 INFO L225 Difference]: With dead ends: 27545 [2022-01-10 06:42:41,908 INFO L226 Difference]: Without dead ends: 14941 [2022-01-10 06:42:41,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:41,925 INFO L933 BasicCegarLoop]: 345 mSDtfsCounter, 147 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:41,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 536 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:41,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14941 states. [2022-01-10 06:42:42,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14941 to 14939. [2022-01-10 06:42:42,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14939 states, 13198 states have (on average 1.1410819821185028) internal successors, (15060), 13315 states have internal predecessors, (15060), 892 states have call successors, (892), 688 states have call predecessors, (892), 848 states have return successors, (1100), 936 states have call predecessors, (1100), 892 states have call successors, (1100) [2022-01-10 06:42:42,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14939 states to 14939 states and 17052 transitions. [2022-01-10 06:42:42,672 INFO L78 Accepts]: Start accepts. Automaton has 14939 states and 17052 transitions. Word has length 229 [2022-01-10 06:42:42,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:42,672 INFO L470 AbstractCegarLoop]: Abstraction has 14939 states and 17052 transitions. [2022-01-10 06:42:42,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 06:42:42,673 INFO L276 IsEmpty]: Start isEmpty. Operand 14939 states and 17052 transitions. [2022-01-10 06:42:42,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2022-01-10 06:42:42,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:42,692 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:42,702 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:42:42,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:42,902 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:42,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:42,902 INFO L85 PathProgramCache]: Analyzing trace with hash -2055341917, now seen corresponding path program 1 times [2022-01-10 06:42:42,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:42,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [193418409] [2022-01-10 06:42:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:42,903 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:42,903 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:42,904 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:42,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:42:43,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:43,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:43,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:43,430 INFO L134 CoverageAnalysis]: Checked inductivity of 312 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-01-10 06:42:43,430 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:43,430 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:43,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [193418409] [2022-01-10 06:42:43,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [193418409] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:43,431 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:43,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:42:43,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045629113] [2022-01-10 06:42:43,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:43,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:43,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:43,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:43,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:43,432 INFO L87 Difference]: Start difference. First operand 14939 states and 17052 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:42:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:44,052 INFO L93 Difference]: Finished difference Result 31882 states and 36370 transitions. [2022-01-10 06:42:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 266 [2022-01-10 06:42:44,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:44,107 INFO L225 Difference]: With dead ends: 31882 [2022-01-10 06:42:44,108 INFO L226 Difference]: Without dead ends: 16955 [2022-01-10 06:42:44,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:44,140 INFO L933 BasicCegarLoop]: 242 mSDtfsCounter, 54 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 419 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:44,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 419 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16955 states. [2022-01-10 06:42:44,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16955 to 16875. [2022-01-10 06:42:44,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16875 states, 14894 states have (on average 1.1346851080972205) internal successors, (16900), 15019 states have internal predecessors, (16900), 1028 states have call successors, (1028), 784 states have call predecessors, (1028), 952 states have return successors, (1244), 1072 states have call predecessors, (1244), 1028 states have call successors, (1244) [2022-01-10 06:42:44,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16875 states to 16875 states and 19172 transitions. [2022-01-10 06:42:44,949 INFO L78 Accepts]: Start accepts. Automaton has 16875 states and 19172 transitions. Word has length 266 [2022-01-10 06:42:44,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:44,950 INFO L470 AbstractCegarLoop]: Abstraction has 16875 states and 19172 transitions. [2022-01-10 06:42:44,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 2 states have internal predecessors, (161), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 06:42:44,950 INFO L276 IsEmpty]: Start isEmpty. Operand 16875 states and 19172 transitions. [2022-01-10 06:42:44,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-10 06:42:44,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:44,969 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:44,976 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:45,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:45,170 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:45,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:45,170 INFO L85 PathProgramCache]: Analyzing trace with hash -798149878, now seen corresponding path program 1 times [2022-01-10 06:42:45,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:45,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2142174310] [2022-01-10 06:42:45,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:45,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:45,171 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:45,172 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:45,174 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:42:45,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:45,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:45,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:45,610 INFO L134 CoverageAnalysis]: Checked inductivity of 316 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-01-10 06:42:45,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:45,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:45,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2142174310] [2022-01-10 06:42:45,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2142174310] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:45,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:45,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:45,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484255300] [2022-01-10 06:42:45,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:45,612 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:45,612 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:45,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:45,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:45,612 INFO L87 Difference]: Start difference. First operand 16875 states and 19172 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:45,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:45,857 INFO L93 Difference]: Finished difference Result 21477 states and 24381 transitions. [2022-01-10 06:42:45,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:45,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 270 [2022-01-10 06:42:45,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:45,867 INFO L225 Difference]: With dead ends: 21477 [2022-01-10 06:42:45,867 INFO L226 Difference]: Without dead ends: 3991 [2022-01-10 06:42:45,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:45,890 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 144 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:45,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 465 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:45,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2022-01-10 06:42:46,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3991. [2022-01-10 06:42:46,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3498 states have (on average 1.0903373356203545) internal successors, (3814), 3517 states have internal predecessors, (3814), 280 states have call successors, (280), 196 states have call predecessors, (280), 212 states have return successors, (296), 278 states have call predecessors, (296), 280 states have call successors, (296) [2022-01-10 06:42:46,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 4390 transitions. [2022-01-10 06:42:46,080 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 4390 transitions. Word has length 270 [2022-01-10 06:42:46,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:46,080 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 4390 transitions. [2022-01-10 06:42:46,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:46,081 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 4390 transitions. [2022-01-10 06:42:46,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2022-01-10 06:42:46,087 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:46,088 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:46,101 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:46,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:46,298 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:46,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:46,299 INFO L85 PathProgramCache]: Analyzing trace with hash -948333708, now seen corresponding path program 1 times [2022-01-10 06:42:46,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:46,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [377309968] [2022-01-10 06:42:46,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:46,299 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:46,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:46,300 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:46,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:42:46,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:46,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:46,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:46,687 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 204 proven. 0 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-01-10 06:42:46,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:46,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:46,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [377309968] [2022-01-10 06:42:46,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [377309968] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:46,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:46,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:46,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273594157] [2022-01-10 06:42:46,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:46,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:46,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:46,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:46,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:46,689 INFO L87 Difference]: Start difference. First operand 3991 states and 4390 transitions. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:46,848 INFO L93 Difference]: Finished difference Result 6561 states and 7275 transitions. [2022-01-10 06:42:46,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:46,849 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 270 [2022-01-10 06:42:46,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:46,855 INFO L225 Difference]: With dead ends: 6561 [2022-01-10 06:42:46,856 INFO L226 Difference]: Without dead ends: 3991 [2022-01-10 06:42:46,859 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 268 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:46,860 INFO L933 BasicCegarLoop]: 332 mSDtfsCounter, 160 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:46,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [160 Valid, 487 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:46,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2022-01-10 06:42:47,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3991. [2022-01-10 06:42:47,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3498 states have (on average 1.0817610062893082) internal successors, (3784), 3517 states have internal predecessors, (3784), 280 states have call successors, (280), 196 states have call predecessors, (280), 212 states have return successors, (296), 278 states have call predecessors, (296), 280 states have call successors, (296) [2022-01-10 06:42:47,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 4360 transitions. [2022-01-10 06:42:47,047 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 4360 transitions. Word has length 270 [2022-01-10 06:42:47,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:47,047 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 4360 transitions. [2022-01-10 06:42:47,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:47,047 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 4360 transitions. [2022-01-10 06:42:47,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-01-10 06:42:47,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:47,055 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:47,066 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 06:42:47,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:47,267 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:47,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:47,267 INFO L85 PathProgramCache]: Analyzing trace with hash -1188115827, now seen corresponding path program 1 times [2022-01-10 06:42:47,267 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:47,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739035323] [2022-01-10 06:42:47,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:47,268 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:47,268 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:47,280 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:47,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:42:47,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:47,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:47,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-01-10 06:42:47,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:47,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739035323] [2022-01-10 06:42:47,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739035323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:47,766 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:47,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:47,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266795473] [2022-01-10 06:42:47,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:47,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:47,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:47,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:47,767 INFO L87 Difference]: Start difference. First operand 3991 states and 4360 transitions. Second operand has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:48,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:48,015 INFO L93 Difference]: Finished difference Result 8453 states and 9342 transitions. [2022-01-10 06:42:48,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:48,015 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 273 [2022-01-10 06:42:48,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:48,022 INFO L225 Difference]: With dead ends: 8453 [2022-01-10 06:42:48,022 INFO L226 Difference]: Without dead ends: 4216 [2022-01-10 06:42:48,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 271 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:48,027 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 129 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:48,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 390 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:48,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4216 states. [2022-01-10 06:42:48,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4216 to 4189. [2022-01-10 06:42:48,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 3670 states have (on average 1.0754768392370573) internal successors, (3947), 3690 states have internal predecessors, (3947), 295 states have call successors, (295), 206 states have call predecessors, (295), 223 states have return successors, (315), 293 states have call predecessors, (315), 295 states have call successors, (315) [2022-01-10 06:42:48,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 4557 transitions. [2022-01-10 06:42:48,169 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 4557 transitions. Word has length 273 [2022-01-10 06:42:48,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:48,171 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 4557 transitions. [2022-01-10 06:42:48,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 64.33333333333333) internal successors, (193), 3 states have internal predecessors, (193), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:48,171 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 4557 transitions. [2022-01-10 06:42:48,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-01-10 06:42:48,177 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:48,178 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:48,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:48,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:48,378 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:48,379 INFO L85 PathProgramCache]: Analyzing trace with hash 452259927, now seen corresponding path program 1 times [2022-01-10 06:42:48,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:48,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [578062921] [2022-01-10 06:42:48,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:48,379 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:48,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:48,400 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:48,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:42:48,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:48,506 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:48,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:48,844 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 259 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 06:42:48,844 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:48,844 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:48,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [578062921] [2022-01-10 06:42:48,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [578062921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:48,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:48,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:48,845 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1365594051] [2022-01-10 06:42:48,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:48,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:48,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:48,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:48,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:48,847 INFO L87 Difference]: Start difference. First operand 4189 states and 4557 transitions. Second operand has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:42:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:48,985 INFO L93 Difference]: Finished difference Result 6495 states and 7121 transitions. [2022-01-10 06:42:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 275 [2022-01-10 06:42:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:48,992 INFO L225 Difference]: With dead ends: 6495 [2022-01-10 06:42:48,992 INFO L226 Difference]: Without dead ends: 4191 [2022-01-10 06:42:48,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 274 GetRequests, 273 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:48,997 INFO L933 BasicCegarLoop]: 304 mSDtfsCounter, 129 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 457 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:48,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 457 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:49,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4191 states. [2022-01-10 06:42:49,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4191 to 4189. [2022-01-10 06:42:49,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 3670 states have (on average 1.0673024523160763) internal successors, (3917), 3690 states have internal predecessors, (3917), 295 states have call successors, (295), 206 states have call predecessors, (295), 223 states have return successors, (315), 293 states have call predecessors, (315), 295 states have call successors, (315) [2022-01-10 06:42:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 4527 transitions. [2022-01-10 06:42:49,203 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 4527 transitions. Word has length 275 [2022-01-10 06:42:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:49,203 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 4527 transitions. [2022-01-10 06:42:49,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 65.33333333333333) internal successors, (196), 3 states have internal predecessors, (196), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 06:42:49,203 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 4527 transitions. [2022-01-10 06:42:49,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2022-01-10 06:42:49,209 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:49,210 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:49,221 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 06:42:49,421 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:49,421 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:49,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:49,421 INFO L85 PathProgramCache]: Analyzing trace with hash -629895611, now seen corresponding path program 1 times [2022-01-10 06:42:49,422 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:49,422 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [907820256] [2022-01-10 06:42:49,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:49,422 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:49,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:49,423 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:49,424 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 06:42:49,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:49,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 472 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:49,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 326 backedges. 218 proven. 0 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-01-10 06:42:49,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:49,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:49,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [907820256] [2022-01-10 06:42:49,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [907820256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:49,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:49,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:49,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821967106] [2022-01-10 06:42:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:49,852 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:49,852 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:49,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:49,852 INFO L87 Difference]: Start difference. First operand 4189 states and 4527 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:50,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:50,029 INFO L93 Difference]: Finished difference Result 7521 states and 8179 transitions. [2022-01-10 06:42:50,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:50,030 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), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 277 [2022-01-10 06:42:50,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:50,039 INFO L225 Difference]: With dead ends: 7521 [2022-01-10 06:42:50,039 INFO L226 Difference]: Without dead ends: 4189 [2022-01-10 06:42:50,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:50,044 INFO L933 BasicCegarLoop]: 280 mSDtfsCounter, 164 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 417 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:50,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [164 Valid, 417 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4189 states. [2022-01-10 06:42:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4189 to 4189. [2022-01-10 06:42:50,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4189 states, 3670 states have (on average 1.0580381471389646) internal successors, (3883), 3690 states have internal predecessors, (3883), 295 states have call successors, (295), 206 states have call predecessors, (295), 223 states have return successors, (315), 293 states have call predecessors, (315), 295 states have call successors, (315) [2022-01-10 06:42:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4189 states to 4189 states and 4493 transitions. [2022-01-10 06:42:50,238 INFO L78 Accepts]: Start accepts. Automaton has 4189 states and 4493 transitions. Word has length 277 [2022-01-10 06:42:50,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:50,238 INFO L470 AbstractCegarLoop]: Abstraction has 4189 states and 4493 transitions. [2022-01-10 06:42:50,238 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), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:50,238 INFO L276 IsEmpty]: Start isEmpty. Operand 4189 states and 4493 transitions. [2022-01-10 06:42:50,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2022-01-10 06:42:50,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:50,243 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:50,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:50,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:50,444 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:50,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:50,445 INFO L85 PathProgramCache]: Analyzing trace with hash 1088829085, now seen corresponding path program 1 times [2022-01-10 06:42:50,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:50,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [462050155] [2022-01-10 06:42:50,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:50,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:50,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:50,446 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:50,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 06:42:50,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:50,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:50,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:50,911 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 209 proven. 0 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-01-10 06:42:50,911 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:50,911 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:50,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [462050155] [2022-01-10 06:42:50,911 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [462050155] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:50,912 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:50,912 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:50,912 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510825633] [2022-01-10 06:42:50,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:50,912 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:50,912 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:50,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:50,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:50,913 INFO L87 Difference]: Start difference. First operand 4189 states and 4493 transitions. Second operand has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:51,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:51,044 INFO L93 Difference]: Finished difference Result 5311 states and 5691 transitions. [2022-01-10 06:42:51,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:51,046 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 280 [2022-01-10 06:42:51,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:51,053 INFO L225 Difference]: With dead ends: 5311 [2022-01-10 06:42:51,053 INFO L226 Difference]: Without dead ends: 3991 [2022-01-10 06:42:51,055 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:51,056 INFO L933 BasicCegarLoop]: 343 mSDtfsCounter, 107 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:51,056 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 508 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:51,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3991 states. [2022-01-10 06:42:51,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3991 to 3991. [2022-01-10 06:42:51,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3991 states, 3498 states have (on average 1.0566037735849056) internal successors, (3696), 3517 states have internal predecessors, (3696), 280 states have call successors, (280), 196 states have call predecessors, (280), 212 states have return successors, (296), 278 states have call predecessors, (296), 280 states have call successors, (296) [2022-01-10 06:42:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3991 states to 3991 states and 4272 transitions. [2022-01-10 06:42:51,196 INFO L78 Accepts]: Start accepts. Automaton has 3991 states and 4272 transitions. Word has length 280 [2022-01-10 06:42:51,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:51,196 INFO L470 AbstractCegarLoop]: Abstraction has 3991 states and 4272 transitions. [2022-01-10 06:42:51,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.0) internal successors, (177), 3 states have internal predecessors, (177), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-01-10 06:42:51,196 INFO L276 IsEmpty]: Start isEmpty. Operand 3991 states and 4272 transitions. [2022-01-10 06:42:51,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2022-01-10 06:42:51,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:51,201 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:51,209 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 06:42:51,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:51,401 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:51,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:51,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1631644191, now seen corresponding path program 2 times [2022-01-10 06:42:51,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:51,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [442622913] [2022-01-10 06:42:51,403 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 06:42:51,403 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:51,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:51,404 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:42:51,406 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 06:42:51,553 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 06:42:51,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 06:42:51,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 06:42:51,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:52,160 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 141 proven. 183 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-01-10 06:42:52,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 06:42:52,584 INFO L134 CoverageAnalysis]: Checked inductivity of 335 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 304 trivial. 0 not checked. [2022-01-10 06:42:52,584 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:52,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [442622913] [2022-01-10 06:42:52,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [442622913] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-10 06:42:52,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 06:42:52,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2022-01-10 06:42:52,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328269465] [2022-01-10 06:42:52,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:52,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 06:42:52,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:52,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 06:42:52,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:52,586 INFO L87 Difference]: Start difference. First operand 3991 states and 4272 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 06:42:53,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:53,109 INFO L93 Difference]: Finished difference Result 3991 states and 4272 transitions. [2022-01-10 06:42:53,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:53,110 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 281 [2022-01-10 06:42:53,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:53,111 INFO L225 Difference]: With dead ends: 3991 [2022-01-10 06:42:53,111 INFO L226 Difference]: Without dead ends: 0 [2022-01-10 06:42:53,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 560 GetRequests, 554 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:42:53,115 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 497 mSDsluCounter, 1338 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:53,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 1875 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 289 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:53,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-01-10 06:42:53,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-01-10 06:42:53,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-10 06:42:53,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-01-10 06:42:53,116 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 281 [2022-01-10 06:42:53,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:53,116 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-01-10 06:42:53,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 6 states have internal predecessors, (141), 5 states have call successors, (11), 1 states have call predecessors, (11), 1 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-01-10 06:42:53,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-01-10 06:42:53,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-01-10 06:42:53,120 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-10 06:42:53,128 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 06:42:53,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:53,323 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.