/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.08.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 06:42:47,175 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 06:42:47,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 06:42:47,235 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 06:42:47,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 06:42:47,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 06:42:47,240 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 06:42:47,241 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 06:42:47,243 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 06:42:47,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 06:42:47,247 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 06:42:47,247 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 06:42:47,248 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 06:42:47,249 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 06:42:47,250 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 06:42:47,252 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 06:42:47,253 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 06:42:47,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 06:42:47,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 06:42:47,258 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 06:42:47,259 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 06:42:47,260 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 06:42:47,261 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 06:42:47,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 06:42:47,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 06:42:47,268 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 06:42:47,269 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 06:42:47,270 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 06:42:47,270 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 06:42:47,271 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 06:42:47,272 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 06:42:47,272 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 06:42:47,272 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 06:42:47,272 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 06:42:47,273 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 06:42:47,273 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 06:42:47,276 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 06:42:47,301 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 06:42:47,301 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 06:42:47,301 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 06:42:47,301 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 06:42:47,302 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 06:42:47,302 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 06:42:47,302 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 06:42:47,302 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 06:42:47,303 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 06:42:47,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 06:42:47,303 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 06:42:47,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 06:42:47,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 06:42:47,304 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 06:42:47,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:42:47,305 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 06:42:47,305 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 06:42:47,305 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 06:42:47,306 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 06:42:47,306 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 06:42:47,487 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 06:42:47,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 06:42:47,507 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 06:42:47,508 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 06:42:47,509 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 06:42:47,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/systemc/token_ring.08.cil-2.c [2022-01-10 06:42:47,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ada40cbc/e7c73f3c8dfd4a6aae60ed94ed68cfec/FLAG2e9ec0be5 [2022-01-10 06:42:47,859 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 06:42:47,859 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/systemc/token_ring.08.cil-2.c [2022-01-10 06:42:47,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ada40cbc/e7c73f3c8dfd4a6aae60ed94ed68cfec/FLAG2e9ec0be5 [2022-01-10 06:42:48,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ada40cbc/e7c73f3c8dfd4a6aae60ed94ed68cfec [2022-01-10 06:42:48,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 06:42:48,275 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 06:42:48,300 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 06:42:48,300 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 06:42:48,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 06:42:48,305 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,306 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4caa4ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48, skipping insertion in model container [2022-01-10 06:42:48,306 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,310 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 06:42:48,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 06:42:48,528 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.08.cil-2.c[671,684] [2022-01-10 06:42:48,629 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:42:48,637 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 06:42:48,645 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.08.cil-2.c[671,684] [2022-01-10 06:42:48,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 06:42:48,701 INFO L208 MainTranslator]: Completed translation [2022-01-10 06:42:48,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48 WrapperNode [2022-01-10 06:42:48,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 06:42:48,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 06:42:48,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 06:42:48,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 06:42:48,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,732 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,761 INFO L137 Inliner]: procedures = 44, calls = 56, calls flagged for inlining = 27, calls inlined = 27, statements flattened = 602 [2022-01-10 06:42:48,761 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 06:42:48,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 06:42:48,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 06:42:48,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 06:42:48,777 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,777 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,805 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,814 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 06:42:48,827 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 06:42:48,827 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 06:42:48,827 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 06:42:48,828 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (1/1) ... [2022-01-10 06:42:48,833 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 06:42:48,843 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 06:42:48,852 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 06:42:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 06:42:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 06:42:48,876 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-01-10 06:42:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 06:42:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 06:42:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 06:42:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 06:42:48,877 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 06:42:48,877 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 06:42:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 06:42:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 06:42:48,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 06:42:48,878 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 06:42:48,870 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 06:42:48,946 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 06:42:48,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 06:42:49,428 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 06:42:49,435 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 06:42:49,435 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 06:42:49,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:42:49 BoogieIcfgContainer [2022-01-10 06:42:49,437 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 06:42:49,438 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 06:42:49,438 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 06:42:49,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 06:42:49,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 06:42:48" (1/3) ... [2022-01-10 06:42:49,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fed9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:42:49, skipping insertion in model container [2022-01-10 06:42:49,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 06:42:48" (2/3) ... [2022-01-10 06:42:49,442 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25fed9d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 06:42:49, skipping insertion in model container [2022-01-10 06:42:49,442 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 06:42:49" (3/3) ... [2022-01-10 06:42:49,443 INFO L111 eAbstractionObserver]: Analyzing ICFG token_ring.08.cil-2.c [2022-01-10 06:42:49,446 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 06:42:49,446 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-10 06:42:49,494 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 06:42:49,499 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 06:42:49,499 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-10 06:42:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) [2022-01-10 06:42:49,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:49,531 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:49,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:49,544 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:49,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:49,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1719211472, now seen corresponding path program 1 times [2022-01-10 06:42:49,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:49,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1517524767] [2022-01-10 06:42:49,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:49,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:49,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:49,559 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 06:42:49,560 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 06:42:49,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:49,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:42:49,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:50,003 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 06:42:50,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:50,004 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:50,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1517524767] [2022-01-10 06:42:50,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1517524767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:50,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:50,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:42:50,007 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806686170] [2022-01-10 06:42:50,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:50,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:42:50,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:50,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:42:50,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:42:50,032 INFO L87 Difference]: Start difference. First operand has 290 states, 257 states have (on average 1.6536964980544746) internal successors, (425), 261 states have internal predecessors, (425), 24 states have call successors, (24), 7 states have call predecessors, (24), 7 states have return successors, (24), 23 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:50,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:50,119 INFO L93 Difference]: Finished difference Result 568 states and 929 transitions. [2022-01-10 06:42:50,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:42:50,125 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:50,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:50,136 INFO L225 Difference]: With dead ends: 568 [2022-01-10 06:42:50,136 INFO L226 Difference]: Without dead ends: 284 [2022-01-10 06:42:50,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 06:42:50,142 INFO L933 BasicCegarLoop]: 445 mSDtfsCounter, 435 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 445 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 06:42:50,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 445 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:42:50,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-10 06:42:50,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2022-01-10 06:42:50,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 253 states have (on average 1.565217391304348) internal successors, (396), 255 states have internal predecessors, (396), 24 states have call successors, (24), 7 states have call predecessors, (24), 6 states have return successors, (22), 22 states have call predecessors, (22), 22 states have call successors, (22) [2022-01-10 06:42:50,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 442 transitions. [2022-01-10 06:42:50,214 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 442 transitions. Word has length 134 [2022-01-10 06:42:50,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:50,215 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 442 transitions. [2022-01-10 06:42:50,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:50,216 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 442 transitions. [2022-01-10 06:42:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:50,224 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:50,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:50,250 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-01-10 06:42:50,432 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:42:50,435 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:50,436 INFO L85 PathProgramCache]: Analyzing trace with hash 857377870, now seen corresponding path program 1 times [2022-01-10 06:42:50,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:50,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1620635471] [2022-01-10 06:42:50,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:50,437 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:50,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:50,438 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 06:42:50,440 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 06:42:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:50,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:50,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:50,756 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 06:42:50,757 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:50,757 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:50,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1620635471] [2022-01-10 06:42:50,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1620635471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:50,757 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:50,758 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:50,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554448416] [2022-01-10 06:42:50,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:50,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:50,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:50,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:50,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:50,764 INFO L87 Difference]: Start difference. First operand 284 states and 442 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:51,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:51,248 INFO L93 Difference]: Finished difference Result 852 states and 1340 transitions. [2022-01-10 06:42:51,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:42:51,249 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:51,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:51,253 INFO L225 Difference]: With dead ends: 852 [2022-01-10 06:42:51,254 INFO L226 Difference]: Without dead ends: 584 [2022-01-10 06:42:51,255 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:51,256 INFO L933 BasicCegarLoop]: 476 mSDtfsCounter, 822 mSDsluCounter, 874 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1350 SdHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:51,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [838 Valid, 1350 Invalid, 441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 06:42:51,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-01-10 06:42:51,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 561. [2022-01-10 06:42:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5770750988142292) internal successors, (798), 509 states have internal predecessors, (798), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:51,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 879 transitions. [2022-01-10 06:42:51,281 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 879 transitions. Word has length 134 [2022-01-10 06:42:51,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:51,281 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 879 transitions. [2022-01-10 06:42:51,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 3 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:51,282 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 879 transitions. [2022-01-10 06:42:51,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:51,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:51,283 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:51,290 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 06:42:51,483 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 06:42:51,484 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash -504624566, now seen corresponding path program 1 times [2022-01-10 06:42:51,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062582914] [2022-01-10 06:42:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:51,486 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:51,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:51,505 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 06:42:51,506 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 06:42:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:51,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:51,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:51,866 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 06:42:51,867 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:51,867 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:51,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062582914] [2022-01-10 06:42:51,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1062582914] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:51,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:51,870 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:51,870 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485324083] [2022-01-10 06:42:51,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:51,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:51,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:51,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:51,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:51,874 INFO L87 Difference]: Start difference. First operand 561 states and 879 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:52,138 INFO L93 Difference]: Finished difference Result 1106 states and 1739 transitions. [2022-01-10 06:42:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:52,139 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:52,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:52,141 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:52,141 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:52,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:52,143 INFO L933 BasicCegarLoop]: 414 mSDtfsCounter, 586 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:52,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 893 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:52,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:52,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:52,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5632411067193677) internal successors, (791), 509 states have internal predecessors, (791), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 872 transitions. [2022-01-10 06:42:52,162 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 872 transitions. Word has length 134 [2022-01-10 06:42:52,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:52,163 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 872 transitions. [2022-01-10 06:42:52,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 872 transitions. [2022-01-10 06:42:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:52,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:52,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:52,174 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 06:42:52,372 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 06:42:52,372 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:52,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:52,373 INFO L85 PathProgramCache]: Analyzing trace with hash 2083839182, now seen corresponding path program 1 times [2022-01-10 06:42:52,373 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:52,373 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185886624] [2022-01-10 06:42:52,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:52,373 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:52,373 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:52,388 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 06:42:52,438 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 06:42:52,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:52,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 351 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:52,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:52,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:52,666 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:52,666 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:52,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185886624] [2022-01-10 06:42:52,667 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185886624] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:52,667 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:52,667 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:52,667 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720932055] [2022-01-10 06:42:52,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:52,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:52,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:52,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:52,668 INFO L87 Difference]: Start difference. First operand 561 states and 872 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:52,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:52,917 INFO L93 Difference]: Finished difference Result 1106 states and 1725 transitions. [2022-01-10 06:42:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:52,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:52,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:52,920 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:52,920 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:52,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:52,928 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 580 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 886 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:52,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 886 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:52,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:52,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:52,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5494071146245059) internal successors, (784), 509 states have internal predecessors, (784), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:52,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 865 transitions. [2022-01-10 06:42:52,954 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 865 transitions. Word has length 134 [2022-01-10 06:42:52,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:52,954 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 865 transitions. [2022-01-10 06:42:52,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:52,955 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 865 transitions. [2022-01-10 06:42:52,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:52,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:52,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:52,977 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 06:42:53,164 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 06:42:53,165 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:53,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:53,165 INFO L85 PathProgramCache]: Analyzing trace with hash -209241844, now seen corresponding path program 1 times [2022-01-10 06:42:53,166 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:53,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2005159424] [2022-01-10 06:42:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:53,170 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:53,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:53,175 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 06:42:53,176 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 06:42:53,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:53,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:53,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:53,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:42:53,422 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:53,422 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:53,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2005159424] [2022-01-10 06:42:53,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2005159424] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:53,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:53,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:53,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684600610] [2022-01-10 06:42:53,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:53,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:53,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:53,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:53,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:53,424 INFO L87 Difference]: Start difference. First operand 561 states and 865 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:53,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:53,607 INFO L93 Difference]: Finished difference Result 1106 states and 1711 transitions. [2022-01-10 06:42:53,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:53,607 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:53,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:53,611 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:53,611 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:53,612 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:53,612 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 574 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 590 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:53,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [590 Valid, 879 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:53,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:53,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:53,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5355731225296443) internal successors, (777), 509 states have internal predecessors, (777), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:53,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 858 transitions. [2022-01-10 06:42:53,644 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 858 transitions. Word has length 134 [2022-01-10 06:42:53,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:53,644 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 858 transitions. [2022-01-10 06:42:53,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:53,644 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 858 transitions. [2022-01-10 06:42:53,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:53,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:53,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:53,657 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 06:42:53,857 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 06:42:53,858 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:53,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:53,858 INFO L85 PathProgramCache]: Analyzing trace with hash 673897616, now seen corresponding path program 1 times [2022-01-10 06:42:53,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:53,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1577056170] [2022-01-10 06:42:53,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:53,859 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:53,859 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:53,860 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 06:42:53,861 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 06:42:53,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:53,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:53,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:54,115 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 06:42:54,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:54,115 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:54,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1577056170] [2022-01-10 06:42:54,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1577056170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:54,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:54,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:54,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136014336] [2022-01-10 06:42:54,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:54,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:54,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:54,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:54,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:54,116 INFO L87 Difference]: Start difference. First operand 561 states and 858 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:54,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:54,365 INFO L93 Difference]: Finished difference Result 1106 states and 1697 transitions. [2022-01-10 06:42:54,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:54,367 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:54,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:54,369 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:54,369 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:54,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:54,370 INFO L933 BasicCegarLoop]: 405 mSDtfsCounter, 568 mSDsluCounter, 467 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 584 SdHoareTripleChecker+Valid, 872 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:54,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [584 Valid, 872 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:54,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:54,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:54,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.5217391304347827) internal successors, (770), 509 states have internal predecessors, (770), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:54,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 851 transitions. [2022-01-10 06:42:54,386 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 851 transitions. Word has length 134 [2022-01-10 06:42:54,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:54,386 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 851 transitions. [2022-01-10 06:42:54,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:54,386 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 851 transitions. [2022-01-10 06:42:54,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:54,387 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:54,387 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:54,396 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 06:42:54,594 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 06:42:54,595 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:54,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:54,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1098729332, now seen corresponding path program 1 times [2022-01-10 06:42:54,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:54,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518427832] [2022-01-10 06:42:54,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:54,596 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:54,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:54,597 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 06:42:54,599 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 06:42:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:54,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:54,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:54,839 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 06:42:54,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:54,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:54,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518427832] [2022-01-10 06:42:54,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518427832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:54,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:54,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:54,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597266994] [2022-01-10 06:42:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:54,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:54,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:54,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:54,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:54,841 INFO L87 Difference]: Start difference. First operand 561 states and 851 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:55,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:55,071 INFO L93 Difference]: Finished difference Result 1106 states and 1683 transitions. [2022-01-10 06:42:55,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:55,071 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:55,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:55,073 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:55,073 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:55,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:55,075 INFO L933 BasicCegarLoop]: 402 mSDtfsCounter, 562 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 578 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:55,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [578 Valid, 865 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:55,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:55,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:55,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.507905138339921) internal successors, (763), 509 states have internal predecessors, (763), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:55,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 844 transitions. [2022-01-10 06:42:55,094 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 844 transitions. Word has length 134 [2022-01-10 06:42:55,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:55,094 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 844 transitions. [2022-01-10 06:42:55,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:55,095 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 844 transitions. [2022-01-10 06:42:55,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:55,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:55,096 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:55,108 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 06:42:55,306 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 06:42:55,306 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:55,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:55,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1476488464, now seen corresponding path program 1 times [2022-01-10 06:42:55,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:55,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [456300054] [2022-01-10 06:42:55,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:55,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:55,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:55,308 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 06:42:55,341 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 06:42:55,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:55,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:55,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:55,562 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 06:42:55,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:55,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:55,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [456300054] [2022-01-10 06:42:55,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [456300054] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:55,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:55,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:55,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604051152] [2022-01-10 06:42:55,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:55,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:55,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:55,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:55,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:55,563 INFO L87 Difference]: Start difference. First operand 561 states and 844 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:55,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:55,784 INFO L93 Difference]: Finished difference Result 1106 states and 1669 transitions. [2022-01-10 06:42:55,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:55,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:55,787 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:55,787 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:55,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:55,788 INFO L933 BasicCegarLoop]: 399 mSDtfsCounter, 556 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 858 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:55,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 858 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:55,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:55,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:55,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.4940711462450593) internal successors, (756), 509 states have internal predecessors, (756), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:55,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 837 transitions. [2022-01-10 06:42:55,804 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 837 transitions. Word has length 134 [2022-01-10 06:42:55,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:55,805 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 837 transitions. [2022-01-10 06:42:55,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:55,805 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 837 transitions. [2022-01-10 06:42:55,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:55,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:55,806 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:55,815 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 06:42:56,015 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 06:42:56,016 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:56,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -380102644, now seen corresponding path program 1 times [2022-01-10 06:42:56,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:56,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1716070415] [2022-01-10 06:42:56,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:56,017 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:56,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:56,018 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 06:42:56,019 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 06:42:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:56,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 342 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:56,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:56,286 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 06:42:56,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:56,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:56,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1716070415] [2022-01-10 06:42:56,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1716070415] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:56,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:56,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:56,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320213920] [2022-01-10 06:42:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:56,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:56,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:56,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:56,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:56,288 INFO L87 Difference]: Start difference. First operand 561 states and 837 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:56,507 INFO L93 Difference]: Finished difference Result 1106 states and 1655 transitions. [2022-01-10 06:42:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:42:56,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:56,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:56,510 INFO L225 Difference]: With dead ends: 1106 [2022-01-10 06:42:56,510 INFO L226 Difference]: Without dead ends: 561 [2022-01-10 06:42:56,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:56,513 INFO L933 BasicCegarLoop]: 396 mSDtfsCounter, 549 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 851 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:56,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 851 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:42:56,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-10 06:42:56,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 561. [2022-01-10 06:42:56,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 506 states have (on average 1.4802371541501975) internal successors, (749), 509 states have internal predecessors, (749), 41 states have call successors, (41), 13 states have call predecessors, (41), 13 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 06:42:56,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 830 transitions. [2022-01-10 06:42:56,528 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 830 transitions. Word has length 134 [2022-01-10 06:42:56,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:56,528 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 830 transitions. [2022-01-10 06:42:56,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:56,528 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 830 transitions. [2022-01-10 06:42:56,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:56,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:56,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:56,549 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 06:42:56,737 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 06:42:56,737 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:56,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:56,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1964331528, now seen corresponding path program 1 times [2022-01-10 06:42:56,738 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:56,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994273627] [2022-01-10 06:42:56,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:56,738 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:56,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:56,744 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 06:42:56,745 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 06:42:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:56,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 340 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:56,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:56,987 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 06:42:56,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:56,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:56,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994273627] [2022-01-10 06:42:56,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994273627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:56,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:56,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:56,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332415445] [2022-01-10 06:42:56,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:56,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:56,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:56,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:56,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:56,988 INFO L87 Difference]: Start difference. First operand 561 states and 830 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:57,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:57,292 INFO L93 Difference]: Finished difference Result 1242 states and 1851 transitions. [2022-01-10 06:42:57,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:57,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:57,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:57,294 INFO L225 Difference]: With dead ends: 1242 [2022-01-10 06:42:57,295 INFO L226 Difference]: Without dead ends: 697 [2022-01-10 06:42:57,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:57,296 INFO L933 BasicCegarLoop]: 393 mSDtfsCounter, 629 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 645 SdHoareTripleChecker+Valid, 843 SdHoareTripleChecker+Invalid, 350 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:57,297 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [645 Valid, 843 Invalid, 350 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:57,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2022-01-10 06:42:57,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 697. [2022-01-10 06:42:57,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 697 states, 636 states have (on average 1.4528301886792452) internal successors, (924), 639 states have internal predecessors, (924), 43 states have call successors, (43), 17 states have call predecessors, (43), 17 states have return successors, (42), 41 states have call predecessors, (42), 41 states have call successors, (42) [2022-01-10 06:42:57,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 1009 transitions. [2022-01-10 06:42:57,319 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 1009 transitions. Word has length 134 [2022-01-10 06:42:57,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:57,319 INFO L470 AbstractCegarLoop]: Abstraction has 697 states and 1009 transitions. [2022-01-10 06:42:57,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:57,319 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 1009 transitions. [2022-01-10 06:42:57,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:57,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:57,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:57,341 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 06:42:57,527 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 06:42:57,528 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:57,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:57,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1481669867, now seen corresponding path program 1 times [2022-01-10 06:42:57,528 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:57,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [891852030] [2022-01-10 06:42:57,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:57,528 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:57,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:57,529 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 06:42:57,531 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 06:42:57,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:57,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 337 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:57,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:57,782 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 06:42:57,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:57,782 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:57,782 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [891852030] [2022-01-10 06:42:57,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [891852030] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:57,782 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:57,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:57,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688379430] [2022-01-10 06:42:57,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:57,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:57,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:57,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:57,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:57,783 INFO L87 Difference]: Start difference. First operand 697 states and 1009 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:58,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:58,118 INFO L93 Difference]: Finished difference Result 1514 states and 2209 transitions. [2022-01-10 06:42:58,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:58,118 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:58,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:58,125 INFO L225 Difference]: With dead ends: 1514 [2022-01-10 06:42:58,126 INFO L226 Difference]: Without dead ends: 833 [2022-01-10 06:42:58,127 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:58,128 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 622 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 837 SdHoareTripleChecker+Invalid, 349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:58,128 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [638 Valid, 837 Invalid, 349 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 314 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:58,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2022-01-10 06:42:58,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 833. [2022-01-10 06:42:58,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 833 states, 766 states have (on average 1.4295039164490861) internal successors, (1095), 769 states have internal predecessors, (1095), 45 states have call successors, (45), 21 states have call predecessors, (45), 21 states have return successors, (44), 43 states have call predecessors, (44), 43 states have call successors, (44) [2022-01-10 06:42:58,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 833 states to 833 states and 1184 transitions. [2022-01-10 06:42:58,188 INFO L78 Accepts]: Start accepts. Automaton has 833 states and 1184 transitions. Word has length 134 [2022-01-10 06:42:58,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:58,188 INFO L470 AbstractCegarLoop]: Abstraction has 833 states and 1184 transitions. [2022-01-10 06:42:58,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:58,189 INFO L276 IsEmpty]: Start isEmpty. Operand 833 states and 1184 transitions. [2022-01-10 06:42:58,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:58,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:58,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:58,206 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 06:42:58,390 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 06:42:58,390 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:58,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:58,391 INFO L85 PathProgramCache]: Analyzing trace with hash 858388265, now seen corresponding path program 1 times [2022-01-10 06:42:58,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:58,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1896081772] [2022-01-10 06:42:58,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:58,392 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:58,392 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:58,393 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 06:42:58,394 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 06:42:58,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:58,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:58,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:58,671 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 06:42:58,672 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:58,672 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:58,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1896081772] [2022-01-10 06:42:58,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1896081772] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:58,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:58,672 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:58,672 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598315345] [2022-01-10 06:42:58,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:58,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:58,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:58,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:58,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:58,673 INFO L87 Difference]: Start difference. First operand 833 states and 1184 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:59,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:59,017 INFO L93 Difference]: Finished difference Result 1786 states and 2559 transitions. [2022-01-10 06:42:59,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:59,018 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:59,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:59,021 INFO L225 Difference]: With dead ends: 1786 [2022-01-10 06:42:59,021 INFO L226 Difference]: Without dead ends: 969 [2022-01-10 06:42:59,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:59,024 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 616 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 632 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:59,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [632 Valid, 828 Invalid, 347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-01-10 06:42:59,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 969. [2022-01-10 06:42:59,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 969 states, 896 states have (on average 1.4084821428571428) internal successors, (1262), 899 states have internal predecessors, (1262), 47 states have call successors, (47), 25 states have call predecessors, (47), 25 states have return successors, (46), 45 states have call predecessors, (46), 45 states have call successors, (46) [2022-01-10 06:42:59,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 969 states to 969 states and 1355 transitions. [2022-01-10 06:42:59,053 INFO L78 Accepts]: Start accepts. Automaton has 969 states and 1355 transitions. Word has length 134 [2022-01-10 06:42:59,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:59,054 INFO L470 AbstractCegarLoop]: Abstraction has 969 states and 1355 transitions. [2022-01-10 06:42:59,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:59,054 INFO L276 IsEmpty]: Start isEmpty. Operand 969 states and 1355 transitions. [2022-01-10 06:42:59,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:59,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:59,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:59,065 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 06:42:59,261 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 06:42:59,262 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:42:59,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:42:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 915229068, now seen corresponding path program 1 times [2022-01-10 06:42:59,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:42:59,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026708874] [2022-01-10 06:42:59,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:42:59,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:42:59,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:42:59,275 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 06:42:59,276 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 06:42:59,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:42:59,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:42:59,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:42:59,524 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 06:42:59,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:42:59,525 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:42:59,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026708874] [2022-01-10 06:42:59,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026708874] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:42:59,525 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:42:59,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:42:59,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908270665] [2022-01-10 06:42:59,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:42:59,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:42:59,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:42:59,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:42:59,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:42:59,526 INFO L87 Difference]: Start difference. First operand 969 states and 1355 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:59,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:42:59,838 INFO L93 Difference]: Finished difference Result 2058 states and 2901 transitions. [2022-01-10 06:42:59,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:42:59,838 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:42:59,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:42:59,842 INFO L225 Difference]: With dead ends: 2058 [2022-01-10 06:42:59,842 INFO L226 Difference]: Without dead ends: 1105 [2022-01-10 06:42:59,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 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 06:42:59,844 INFO L933 BasicCegarLoop]: 383 mSDtfsCounter, 609 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 625 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:42:59,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [625 Valid, 821 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:42:59,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-10 06:42:59,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1105. [2022-01-10 06:42:59,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1105 states, 1026 states have (on average 1.3888888888888888) internal successors, (1425), 1029 states have internal predecessors, (1425), 49 states have call successors, (49), 29 states have call predecessors, (49), 29 states have return successors, (48), 47 states have call predecessors, (48), 47 states have call successors, (48) [2022-01-10 06:42:59,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1105 states to 1105 states and 1522 transitions. [2022-01-10 06:42:59,913 INFO L78 Accepts]: Start accepts. Automaton has 1105 states and 1522 transitions. Word has length 134 [2022-01-10 06:42:59,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:42:59,913 INFO L470 AbstractCegarLoop]: Abstraction has 1105 states and 1522 transitions. [2022-01-10 06:42:59,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:42:59,914 INFO L276 IsEmpty]: Start isEmpty. Operand 1105 states and 1522 transitions. [2022-01-10 06:42:59,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:42:59,914 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:42:59,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:42:59,935 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 06:43:00,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:00,122 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:00,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:00,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1849286745, now seen corresponding path program 1 times [2022-01-10 06:43:00,123 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:00,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046848068] [2022-01-10 06:43:00,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:00,123 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:00,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:00,133 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:00,134 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 06:43:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:00,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:00,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:00,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:00,371 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:00,371 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:00,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046848068] [2022-01-10 06:43:00,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046848068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:00,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:00,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:00,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136352941] [2022-01-10 06:43:00,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:00,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:00,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:00,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:00,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:00,372 INFO L87 Difference]: Start difference. First operand 1105 states and 1522 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:00,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:00,699 INFO L93 Difference]: Finished difference Result 2330 states and 3235 transitions. [2022-01-10 06:43:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:00,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:00,704 INFO L225 Difference]: With dead ends: 2330 [2022-01-10 06:43:00,704 INFO L226 Difference]: Without dead ends: 1241 [2022-01-10 06:43:00,706 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:43:00,706 INFO L933 BasicCegarLoop]: 380 mSDtfsCounter, 602 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:00,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 814 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2022-01-10 06:43:00,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1241. [2022-01-10 06:43:00,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1241 states, 1156 states have (on average 1.3702422145328719) internal successors, (1584), 1159 states have internal predecessors, (1584), 51 states have call successors, (51), 33 states have call predecessors, (51), 33 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 06:43:00,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1685 transitions. [2022-01-10 06:43:00,753 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1685 transitions. Word has length 134 [2022-01-10 06:43:00,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:00,753 INFO L470 AbstractCegarLoop]: Abstraction has 1241 states and 1685 transitions. [2022-01-10 06:43:00,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:00,753 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1685 transitions. [2022-01-10 06:43:00,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:00,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:00,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:00,761 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 06:43:00,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:00,961 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:00,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:00,962 INFO L85 PathProgramCache]: Analyzing trace with hash 552835115, now seen corresponding path program 1 times [2022-01-10 06:43:00,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:00,962 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [920356075] [2022-01-10 06:43:00,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:00,962 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:00,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:00,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:00,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 06:43:01,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:01,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:01,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:01,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:01,217 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:01,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [920356075] [2022-01-10 06:43:01,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [920356075] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:01,217 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:01,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:01,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428854772] [2022-01-10 06:43:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:01,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:01,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:01,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:01,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:01,218 INFO L87 Difference]: Start difference. First operand 1241 states and 1685 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:01,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:01,551 INFO L93 Difference]: Finished difference Result 2602 states and 3561 transitions. [2022-01-10 06:43:01,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:01,552 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:01,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:01,556 INFO L225 Difference]: With dead ends: 2602 [2022-01-10 06:43:01,556 INFO L226 Difference]: Without dead ends: 1377 [2022-01-10 06:43:01,559 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:43:01,560 INFO L933 BasicCegarLoop]: 377 mSDtfsCounter, 595 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 611 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:01,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [611 Valid, 807 Invalid, 344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:01,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2022-01-10 06:43:01,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1377. [2022-01-10 06:43:01,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1377 states, 1286 states have (on average 1.3522550544323484) internal successors, (1739), 1289 states have internal predecessors, (1739), 53 states have call successors, (53), 37 states have call predecessors, (53), 37 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 06:43:01,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1377 states to 1377 states and 1844 transitions. [2022-01-10 06:43:01,604 INFO L78 Accepts]: Start accepts. Automaton has 1377 states and 1844 transitions. Word has length 134 [2022-01-10 06:43:01,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:01,604 INFO L470 AbstractCegarLoop]: Abstraction has 1377 states and 1844 transitions. [2022-01-10 06:43:01,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:01,604 INFO L276 IsEmpty]: Start isEmpty. Operand 1377 states and 1844 transitions. [2022-01-10 06:43:01,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:01,605 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:01,605 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:01,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:01,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:01,813 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:01,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:01,813 INFO L85 PathProgramCache]: Analyzing trace with hash -742968378, now seen corresponding path program 1 times [2022-01-10 06:43:01,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:01,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1320811218] [2022-01-10 06:43:01,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:01,814 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:01,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:01,815 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:01,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 06:43:01,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:01,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:01,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:02,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:02,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:02,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:02,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1320811218] [2022-01-10 06:43:02,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1320811218] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:02,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:02,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:02,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635381427] [2022-01-10 06:43:02,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:02,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:02,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:02,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:02,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:02,062 INFO L87 Difference]: Start difference. First operand 1377 states and 1844 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:02,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:02,442 INFO L93 Difference]: Finished difference Result 2874 states and 3879 transitions. [2022-01-10 06:43:02,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:02,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:02,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:02,446 INFO L225 Difference]: With dead ends: 2874 [2022-01-10 06:43:02,446 INFO L226 Difference]: Without dead ends: 1513 [2022-01-10 06:43:02,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:43:02,450 INFO L933 BasicCegarLoop]: 374 mSDtfsCounter, 587 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 603 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:02,450 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [603 Valid, 800 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:02,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1513 states. [2022-01-10 06:43:02,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1513 to 1513. [2022-01-10 06:43:02,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1513 states, 1416 states have (on average 1.3347457627118644) internal successors, (1890), 1419 states have internal predecessors, (1890), 55 states have call successors, (55), 41 states have call predecessors, (55), 41 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 06:43:02,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1513 states to 1513 states and 1999 transitions. [2022-01-10 06:43:02,505 INFO L78 Accepts]: Start accepts. Automaton has 1513 states and 1999 transitions. Word has length 134 [2022-01-10 06:43:02,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:02,505 INFO L470 AbstractCegarLoop]: Abstraction has 1513 states and 1999 transitions. [2022-01-10 06:43:02,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:02,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1513 states and 1999 transitions. [2022-01-10 06:43:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:02,506 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:02,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:02,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:02,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:02,714 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:02,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:02,714 INFO L85 PathProgramCache]: Analyzing trace with hash 671814881, now seen corresponding path program 1 times [2022-01-10 06:43:02,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:02,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1123111533] [2022-01-10 06:43:02,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:02,715 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:02,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:02,716 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:02,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 06:43:02,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:02,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:02,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:02,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:02,967 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:02,967 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:02,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1123111533] [2022-01-10 06:43:02,967 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1123111533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:02,967 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:02,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:02,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133605544] [2022-01-10 06:43:02,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:02,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:02,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:02,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:02,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:02,968 INFO L87 Difference]: Start difference. First operand 1513 states and 1999 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:03,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:03,327 INFO L93 Difference]: Finished difference Result 3146 states and 4189 transitions. [2022-01-10 06:43:03,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:03,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:03,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:03,332 INFO L225 Difference]: With dead ends: 3146 [2022-01-10 06:43:03,332 INFO L226 Difference]: Without dead ends: 1649 [2022-01-10 06:43:03,333 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:43:03,334 INFO L933 BasicCegarLoop]: 371 mSDtfsCounter, 580 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:03,334 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 793 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:03,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1649 states. [2022-01-10 06:43:03,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1649 to 1649. [2022-01-10 06:43:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1649 states, 1546 states have (on average 1.3175937904269082) internal successors, (2037), 1549 states have internal predecessors, (2037), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1649 states to 1649 states and 2150 transitions. [2022-01-10 06:43:03,391 INFO L78 Accepts]: Start accepts. Automaton has 1649 states and 2150 transitions. Word has length 134 [2022-01-10 06:43:03,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:03,391 INFO L470 AbstractCegarLoop]: Abstraction has 1649 states and 2150 transitions. [2022-01-10 06:43:03,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:03,391 INFO L276 IsEmpty]: Start isEmpty. Operand 1649 states and 2150 transitions. [2022-01-10 06:43:03,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:03,392 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:03,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:03,399 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 06:43:03,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:03,600 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:03,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:03,600 INFO L85 PathProgramCache]: Analyzing trace with hash 2125557605, now seen corresponding path program 1 times [2022-01-10 06:43:03,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:03,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2069417460] [2022-01-10 06:43:03,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:03,600 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:03,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:03,601 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:03,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 06:43:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:03,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:03,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:03,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:03,871 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:03,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2069417460] [2022-01-10 06:43:03,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2069417460] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:03,871 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:03,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:03,873 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154537216] [2022-01-10 06:43:03,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:03,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:03,874 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:03,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:03,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:03,874 INFO L87 Difference]: Start difference. First operand 1649 states and 2150 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:04,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:04,018 INFO L93 Difference]: Finished difference Result 3519 states and 4620 transitions. [2022-01-10 06:43:04,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:04,019 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:04,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:04,025 INFO L225 Difference]: With dead ends: 3519 [2022-01-10 06:43:04,025 INFO L226 Difference]: Without dead ends: 1887 [2022-01-10 06:43:04,027 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:04,028 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 323 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 1700 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:04,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 1700 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:04,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-01-10 06:43:04,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1655. [2022-01-10 06:43:04,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1655 states, 1552 states have (on average 1.3060567010309279) internal successors, (2027), 1555 states have internal predecessors, (2027), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:04,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1655 states to 1655 states and 2140 transitions. [2022-01-10 06:43:04,104 INFO L78 Accepts]: Start accepts. Automaton has 1655 states and 2140 transitions. Word has length 134 [2022-01-10 06:43:04,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:04,104 INFO L470 AbstractCegarLoop]: Abstraction has 1655 states and 2140 transitions. [2022-01-10 06:43:04,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:04,104 INFO L276 IsEmpty]: Start isEmpty. Operand 1655 states and 2140 transitions. [2022-01-10 06:43:04,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:04,105 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:04,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:04,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:04,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:04,312 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:04,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:04,312 INFO L85 PathProgramCache]: Analyzing trace with hash -292346461, now seen corresponding path program 1 times [2022-01-10 06:43:04,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:04,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [164263896] [2022-01-10 06:43:04,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:04,313 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:04,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:04,314 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:04,332 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 06:43:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:04,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 319 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:04,406 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:04,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:04,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:04,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:04,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [164263896] [2022-01-10 06:43:04,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [164263896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:04,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:04,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:04,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223991312] [2022-01-10 06:43:04,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:04,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:04,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:04,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:04,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:04,565 INFO L87 Difference]: Start difference. First operand 1655 states and 2140 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:04,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:04,652 INFO L93 Difference]: Finished difference Result 3503 states and 4564 transitions. [2022-01-10 06:43:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:04,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:04,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:04,658 INFO L225 Difference]: With dead ends: 3503 [2022-01-10 06:43:04,658 INFO L226 Difference]: Without dead ends: 1865 [2022-01-10 06:43:04,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:04,661 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 284 mSDsluCounter, 1291 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:04,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 1685 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1865 states. [2022-01-10 06:43:04,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1865 to 1661. [2022-01-10 06:43:04,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1661 states, 1558 states have (on average 1.2946084724005136) internal successors, (2017), 1561 states have internal predecessors, (2017), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:04,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1661 states to 1661 states and 2130 transitions. [2022-01-10 06:43:04,785 INFO L78 Accepts]: Start accepts. Automaton has 1661 states and 2130 transitions. Word has length 134 [2022-01-10 06:43:04,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:04,785 INFO L470 AbstractCegarLoop]: Abstraction has 1661 states and 2130 transitions. [2022-01-10 06:43:04,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 1661 states and 2130 transitions. [2022-01-10 06:43:04,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:04,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:04,786 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:04,793 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 06:43:04,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:04,993 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:04,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:04,993 INFO L85 PathProgramCache]: Analyzing trace with hash 2123489889, now seen corresponding path program 1 times [2022-01-10 06:43:04,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:04,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058248867] [2022-01-10 06:43:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:04,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:04,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:04,995 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:04,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 06:43:05,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:05,084 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:05,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:05,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:05,245 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058248867] [2022-01-10 06:43:05,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058248867] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:05,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:05,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:05,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412765525] [2022-01-10 06:43:05,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:05,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:05,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:05,246 INFO L87 Difference]: Start difference. First operand 1661 states and 2130 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:05,338 INFO L93 Difference]: Finished difference Result 3487 states and 4508 transitions. [2022-01-10 06:43:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:05,344 INFO L225 Difference]: With dead ends: 3487 [2022-01-10 06:43:05,344 INFO L226 Difference]: Without dead ends: 1843 [2022-01-10 06:43:05,348 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:05,349 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 245 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:05,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 1670 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:05,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2022-01-10 06:43:05,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1667. [2022-01-10 06:43:05,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1667 states, 1564 states have (on average 1.2832480818414322) internal successors, (2007), 1567 states have internal predecessors, (2007), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:05,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1667 states to 1667 states and 2120 transitions. [2022-01-10 06:43:05,429 INFO L78 Accepts]: Start accepts. Automaton has 1667 states and 2120 transitions. Word has length 134 [2022-01-10 06:43:05,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:05,429 INFO L470 AbstractCegarLoop]: Abstraction has 1667 states and 2120 transitions. [2022-01-10 06:43:05,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:05,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1667 states and 2120 transitions. [2022-01-10 06:43:05,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:05,430 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:05,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:05,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:05,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:05,637 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:05,637 INFO L85 PathProgramCache]: Analyzing trace with hash -1332443745, now seen corresponding path program 1 times [2022-01-10 06:43:05,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:05,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1675327751] [2022-01-10 06:43:05,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:05,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:05,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:05,639 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:05,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 06:43:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:05,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:05,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:05,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:05,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:05,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:05,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1675327751] [2022-01-10 06:43:05,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1675327751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:05,878 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:05,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:05,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010767870] [2022-01-10 06:43:05,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:05,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:05,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:05,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:05,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:05,892 INFO L87 Difference]: Start difference. First operand 1667 states and 2120 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:05,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:05,991 INFO L93 Difference]: Finished difference Result 3471 states and 4452 transitions. [2022-01-10 06:43:05,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:05,992 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:05,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:05,997 INFO L225 Difference]: With dead ends: 3471 [2022-01-10 06:43:05,997 INFO L226 Difference]: Without dead ends: 1821 [2022-01-10 06:43:06,000 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:06,000 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 206 mSDsluCounter, 1261 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:06,000 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 1655 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:06,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1821 states. [2022-01-10 06:43:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1821 to 1673. [2022-01-10 06:43:06,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1570 states have (on average 1.2719745222929937) internal successors, (1997), 1573 states have internal predecessors, (1997), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:06,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2110 transitions. [2022-01-10 06:43:06,081 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2110 transitions. Word has length 134 [2022-01-10 06:43:06,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:06,081 INFO L470 AbstractCegarLoop]: Abstraction has 1673 states and 2110 transitions. [2022-01-10 06:43:06,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:06,081 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2110 transitions. [2022-01-10 06:43:06,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:06,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:06,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:06,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:06,290 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:06,290 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:06,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:06,291 INFO L85 PathProgramCache]: Analyzing trace with hash -1255542947, now seen corresponding path program 1 times [2022-01-10 06:43:06,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:06,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514168574] [2022-01-10 06:43:06,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:06,291 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:06,291 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:06,292 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:06,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 06:43:06,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:06,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:06,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:06,563 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 06:43:06,564 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:06,564 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:06,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514168574] [2022-01-10 06:43:06,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514168574] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:06,564 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:06,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:06,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837430860] [2022-01-10 06:43:06,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:06,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:06,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:06,565 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:06,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:06,565 INFO L87 Difference]: Start difference. First operand 1673 states and 2110 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:06,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:06,676 INFO L93 Difference]: Finished difference Result 3427 states and 4360 transitions. [2022-01-10 06:43:06,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:06,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:06,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:06,680 INFO L225 Difference]: With dead ends: 3427 [2022-01-10 06:43:06,680 INFO L226 Difference]: Without dead ends: 1771 [2022-01-10 06:43:06,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:06,683 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 128 mSDsluCounter, 1231 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1625 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:06,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1625 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:06,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1771 states. [2022-01-10 06:43:06,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1771 to 1679. [2022-01-10 06:43:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1679 states, 1576 states have (on average 1.260786802030457) internal successors, (1987), 1579 states have internal predecessors, (1987), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:06,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1679 states to 1679 states and 2100 transitions. [2022-01-10 06:43:06,757 INFO L78 Accepts]: Start accepts. Automaton has 1679 states and 2100 transitions. Word has length 134 [2022-01-10 06:43:06,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:06,757 INFO L470 AbstractCegarLoop]: Abstraction has 1679 states and 2100 transitions. [2022-01-10 06:43:06,757 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:06,757 INFO L276 IsEmpty]: Start isEmpty. Operand 1679 states and 2100 transitions. [2022-01-10 06:43:06,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:06,758 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:06,759 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:06,765 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 06:43:06,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:06,965 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:06,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:06,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1053719013, now seen corresponding path program 1 times [2022-01-10 06:43:06,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:06,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800307510] [2022-01-10 06:43:06,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:06,966 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:06,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:06,984 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:07,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 06:43:07,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:07,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 315 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:07,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:07,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:07,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:07,250 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:07,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800307510] [2022-01-10 06:43:07,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800307510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:07,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:07,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:07,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132012951] [2022-01-10 06:43:07,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:07,250 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:07,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:07,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:07,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:07,251 INFO L87 Difference]: Start difference. First operand 1679 states and 2100 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:07,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:07,379 INFO L93 Difference]: Finished difference Result 3971 states and 5020 transitions. [2022-01-10 06:43:07,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:07,379 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:07,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:07,393 INFO L225 Difference]: With dead ends: 3971 [2022-01-10 06:43:07,393 INFO L226 Difference]: Without dead ends: 2309 [2022-01-10 06:43:07,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:07,397 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 90 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:07,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 1615 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2309 states. [2022-01-10 06:43:07,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2309 to 1733. [2022-01-10 06:43:07,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1733 states, 1630 states have (on average 1.2521472392638038) internal successors, (2041), 1633 states have internal predecessors, (2041), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:07,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1733 states to 1733 states and 2154 transitions. [2022-01-10 06:43:07,524 INFO L78 Accepts]: Start accepts. Automaton has 1733 states and 2154 transitions. Word has length 134 [2022-01-10 06:43:07,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:07,524 INFO L470 AbstractCegarLoop]: Abstraction has 1733 states and 2154 transitions. [2022-01-10 06:43:07,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:07,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1733 states and 2154 transitions. [2022-01-10 06:43:07,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:07,525 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:07,525 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:07,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:07,732 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:07,733 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:07,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:07,733 INFO L85 PathProgramCache]: Analyzing trace with hash -177700007, now seen corresponding path program 1 times [2022-01-10 06:43:07,733 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:07,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788645811] [2022-01-10 06:43:07,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:07,733 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:07,733 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:07,745 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:07,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 06:43:07,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:07,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:07,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:08,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:08,021 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:08,021 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:08,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788645811] [2022-01-10 06:43:08,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788645811] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:08,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:08,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:08,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116896519] [2022-01-10 06:43:08,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:08,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:08,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:08,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:08,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:08,023 INFO L87 Difference]: Start difference. First operand 1733 states and 2154 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:08,136 INFO L93 Difference]: Finished difference Result 3491 states and 4372 transitions. [2022-01-10 06:43:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:08,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:08,142 INFO L225 Difference]: With dead ends: 3491 [2022-01-10 06:43:08,142 INFO L226 Difference]: Without dead ends: 1775 [2022-01-10 06:43:08,145 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:08,146 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 49 mSDsluCounter, 1196 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:08,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1590 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1775 states. [2022-01-10 06:43:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1775 to 1739. [2022-01-10 06:43:08,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1739 states, 1636 states have (on average 1.2414425427872862) internal successors, (2031), 1639 states have internal predecessors, (2031), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:08,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1739 states to 1739 states and 2144 transitions. [2022-01-10 06:43:08,285 INFO L78 Accepts]: Start accepts. Automaton has 1739 states and 2144 transitions. Word has length 134 [2022-01-10 06:43:08,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:08,285 INFO L470 AbstractCegarLoop]: Abstraction has 1739 states and 2144 transitions. [2022-01-10 06:43:08,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:08,285 INFO L276 IsEmpty]: Start isEmpty. Operand 1739 states and 2144 transitions. [2022-01-10 06:43:08,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:08,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:08,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:08,309 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:08,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:08,493 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:08,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:08,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1761462039, now seen corresponding path program 1 times [2022-01-10 06:43:08,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:08,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150123274] [2022-01-10 06:43:08,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:08,494 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:08,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:08,495 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:08,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 06:43:08,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:08,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 06:43:08,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:08,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:08,756 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:08,756 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:08,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150123274] [2022-01-10 06:43:08,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150123274] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:08,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:08,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 06:43:08,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576935687] [2022-01-10 06:43:08,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:08,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:08,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:08,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:08,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:08,757 INFO L87 Difference]: Start difference. First operand 1739 states and 2144 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:08,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:08,875 INFO L93 Difference]: Finished difference Result 3475 states and 4316 transitions. [2022-01-10 06:43:08,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:08,875 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:08,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:08,879 INFO L225 Difference]: With dead ends: 3475 [2022-01-10 06:43:08,879 INFO L226 Difference]: Without dead ends: 1753 [2022-01-10 06:43:08,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:08,881 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 10 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1575 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:08,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1575 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:08,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1753 states. [2022-01-10 06:43:08,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1753 to 1745. [2022-01-10 06:43:08,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1642 states have (on average 1.230816077953715) internal successors, (2021), 1645 states have internal predecessors, (2021), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:08,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2134 transitions. [2022-01-10 06:43:08,968 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2134 transitions. Word has length 134 [2022-01-10 06:43:08,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:08,968 INFO L470 AbstractCegarLoop]: Abstraction has 1745 states and 2134 transitions. [2022-01-10 06:43:08,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 5 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:08,968 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2134 transitions. [2022-01-10 06:43:08,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:08,969 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:08,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:08,975 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Ended with exit code 0 [2022-01-10 06:43:09,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:09,175 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:09,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:09,176 INFO L85 PathProgramCache]: Analyzing trace with hash 2009608533, now seen corresponding path program 1 times [2022-01-10 06:43:09,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:09,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [769501470] [2022-01-10 06:43:09,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:09,176 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:09,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:09,177 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:09,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 06:43:09,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:43:09,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:09,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:09,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:09,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:09,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [769501470] [2022-01-10 06:43:09,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [769501470] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:09,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:09,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:09,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964101414] [2022-01-10 06:43:09,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:09,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:09,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:09,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:09,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:09,455 INFO L87 Difference]: Start difference. First operand 1745 states and 2134 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:09,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:09,766 INFO L93 Difference]: Finished difference Result 3474 states and 4249 transitions. [2022-01-10 06:43:09,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 06:43:09,767 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:09,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:09,770 INFO L225 Difference]: With dead ends: 3474 [2022-01-10 06:43:09,770 INFO L226 Difference]: Without dead ends: 1745 [2022-01-10 06:43:09,772 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 06:43:09,772 INFO L933 BasicCegarLoop]: 369 mSDtfsCounter, 430 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 445 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:09,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [445 Valid, 788 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:09,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1745 states. [2022-01-10 06:43:09,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1745 to 1745. [2022-01-10 06:43:09,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1745 states, 1642 states have (on average 1.2265529841656517) internal successors, (2014), 1645 states have internal predecessors, (2014), 57 states have call successors, (57), 45 states have call predecessors, (57), 45 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:09,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1745 states to 1745 states and 2127 transitions. [2022-01-10 06:43:09,874 INFO L78 Accepts]: Start accepts. Automaton has 1745 states and 2127 transitions. Word has length 134 [2022-01-10 06:43:09,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:09,874 INFO L470 AbstractCegarLoop]: Abstraction has 1745 states and 2127 transitions. [2022-01-10 06:43:09,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:09,874 INFO L276 IsEmpty]: Start isEmpty. Operand 1745 states and 2127 transitions. [2022-01-10 06:43:09,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:09,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:09,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:09,882 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:10,079 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:10,079 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:10,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:10,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1583758889, now seen corresponding path program 1 times [2022-01-10 06:43:10,080 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:10,080 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1275974471] [2022-01-10 06:43:10,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:10,080 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:10,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:10,092 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:10,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 06:43:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:10,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 06:43:10,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:10,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:10,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:10,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:10,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1275974471] [2022-01-10 06:43:10,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1275974471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:10,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:10,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:10,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060755190] [2022-01-10 06:43:10,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:10,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 06:43:10,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:10,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 06:43:10,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 06:43:10,362 INFO L87 Difference]: Start difference. First operand 1745 states and 2127 transitions. Second operand has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:10,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:10,799 INFO L93 Difference]: Finished difference Result 3592 states and 4397 transitions. [2022-01-10 06:43:10,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 06:43:10,800 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 134 [2022-01-10 06:43:10,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:10,804 INFO L225 Difference]: With dead ends: 3592 [2022-01-10 06:43:10,804 INFO L226 Difference]: Without dead ends: 1863 [2022-01-10 06:43:10,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 06:43:10,808 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 509 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 524 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:10,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [524 Valid, 801 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 06:43:10,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2022-01-10 06:43:10,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1827. [2022-01-10 06:43:10,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1827 states, 1722 states have (on average 1.2049941927990708) internal successors, (2075), 1725 states have internal predecessors, (2075), 57 states have call successors, (57), 47 states have call predecessors, (57), 47 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 06:43:10,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1827 states to 1827 states and 2188 transitions. [2022-01-10 06:43:10,931 INFO L78 Accepts]: Start accepts. Automaton has 1827 states and 2188 transitions. Word has length 134 [2022-01-10 06:43:10,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:10,933 INFO L470 AbstractCegarLoop]: Abstraction has 1827 states and 2188 transitions. [2022-01-10 06:43:10,933 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 24.6) internal successors, (123), 4 states have internal predecessors, (123), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 06:43:10,933 INFO L276 IsEmpty]: Start isEmpty. Operand 1827 states and 2188 transitions. [2022-01-10 06:43:10,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-01-10 06:43:10,933 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:10,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:10,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:11,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:11,142 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:11,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:11,142 INFO L85 PathProgramCache]: Analyzing trace with hash 905770073, now seen corresponding path program 1 times [2022-01-10 06:43:11,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:11,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [636460572] [2022-01-10 06:43:11,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:11,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:11,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:11,144 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:11,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 06:43:11,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:11,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:11,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:11,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 06:43:11,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:11,406 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:11,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [636460572] [2022-01-10 06:43:11,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [636460572] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:11,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:11,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 06:43:11,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2030363630] [2022-01-10 06:43:11,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:11,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:11,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:11,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:11,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:11,407 INFO L87 Difference]: Start difference. First operand 1827 states and 2188 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:43:11,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:11,597 INFO L93 Difference]: Finished difference Result 5400 states and 6483 transitions. [2022-01-10 06:43:11,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:11,598 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 134 [2022-01-10 06:43:11,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:11,604 INFO L225 Difference]: With dead ends: 5400 [2022-01-10 06:43:11,604 INFO L226 Difference]: Without dead ends: 3590 [2022-01-10 06:43:11,607 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:11,608 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 238 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 802 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 06:43:11,608 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 802 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:11,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2022-01-10 06:43:11,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3588. [2022-01-10 06:43:11,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3588 states, 3385 states have (on average 1.194387001477105) internal successors, (4043), 3391 states have internal predecessors, (4043), 108 states have call successors, (108), 93 states have call predecessors, (108), 94 states have return successors, (108), 104 states have call predecessors, (108), 106 states have call successors, (108) [2022-01-10 06:43:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3588 states to 3588 states and 4259 transitions. [2022-01-10 06:43:11,819 INFO L78 Accepts]: Start accepts. Automaton has 3588 states and 4259 transitions. Word has length 134 [2022-01-10 06:43:11,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:11,819 INFO L470 AbstractCegarLoop]: Abstraction has 3588 states and 4259 transitions. [2022-01-10 06:43:11,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 06:43:11,820 INFO L276 IsEmpty]: Start isEmpty. Operand 3588 states and 4259 transitions. [2022-01-10 06:43:11,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 06:43:11,825 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:11,825 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:11,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:12,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:12,033 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:12,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:12,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1180070254, now seen corresponding path program 1 times [2022-01-10 06:43:12,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:12,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [457314533] [2022-01-10 06:43:12,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:12,034 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:12,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:12,035 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:12,036 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 06:43:12,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:12,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:43:12,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:12,482 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:43:12,482 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:12,482 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:12,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [457314533] [2022-01-10 06:43:12,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [457314533] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:12,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:12,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:12,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019190193] [2022-01-10 06:43:12,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:12,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:43:12,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:12,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:43:12,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:43:12,483 INFO L87 Difference]: Start difference. First operand 3588 states and 4259 transitions. Second operand has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:13,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:13,097 INFO L93 Difference]: Finished difference Result 10605 states and 12573 transitions. [2022-01-10 06:43:13,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:13,098 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 218 [2022-01-10 06:43:13,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:13,132 INFO L225 Difference]: With dead ends: 10605 [2022-01-10 06:43:13,132 INFO L226 Difference]: Without dead ends: 7035 [2022-01-10 06:43:13,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 216 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 06:43:13,140 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 494 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:13,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 1232 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2022-01-10 06:43:13,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 7031. [2022-01-10 06:43:13,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7031 states, 6637 states have (on average 1.1886394455326201) internal successors, (7889), 6652 states have internal predecessors, (7889), 205 states have call successors, (205), 177 states have call predecessors, (205), 188 states have return successors, (227), 203 states have call predecessors, (227), 203 states have call successors, (227) [2022-01-10 06:43:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7031 states to 7031 states and 8321 transitions. [2022-01-10 06:43:13,594 INFO L78 Accepts]: Start accepts. Automaton has 7031 states and 8321 transitions. Word has length 218 [2022-01-10 06:43:13,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:13,595 INFO L470 AbstractCegarLoop]: Abstraction has 7031 states and 8321 transitions. [2022-01-10 06:43:13,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.5) internal successors, (146), 4 states have internal predecessors, (146), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:13,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7031 states and 8321 transitions. [2022-01-10 06:43:13,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2022-01-10 06:43:13,600 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:13,600 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:13,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:13,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:13,808 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:13,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:13,809 INFO L85 PathProgramCache]: Analyzing trace with hash -893950548, now seen corresponding path program 1 times [2022-01-10 06:43:13,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:13,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2140149713] [2022-01-10 06:43:13,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:13,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:13,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:13,810 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:13,812 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 06:43:13,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:13,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:14,149 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 06:43:14,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:14,150 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:14,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2140149713] [2022-01-10 06:43:14,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2140149713] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:14,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:14,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:14,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322126669] [2022-01-10 06:43:14,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:14,150 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:14,150 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:14,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:14,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:14,151 INFO L87 Difference]: Start difference. First operand 7031 states and 8321 transitions. Second operand has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:14,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:14,625 INFO L93 Difference]: Finished difference Result 14033 states and 16592 transitions. [2022-01-10 06:43:14,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:14,626 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 218 [2022-01-10 06:43:14,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:14,642 INFO L225 Difference]: With dead ends: 14033 [2022-01-10 06:43:14,642 INFO L226 Difference]: Without dead ends: 7020 [2022-01-10 06:43:14,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:14,651 INFO L933 BasicCegarLoop]: 389 mSDtfsCounter, 382 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 389 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:14,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 389 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:14,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-01-10 06:43:15,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 7020. [2022-01-10 06:43:15,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7020 states, 6629 states have (on average 1.18781113290089) internal successors, (7874), 6643 states have internal predecessors, (7874), 202 states have call successors, (202), 177 states have call predecessors, (202), 188 states have return successors, (224), 200 states have call predecessors, (224), 200 states have call successors, (224) [2022-01-10 06:43:15,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7020 states to 7020 states and 8300 transitions. [2022-01-10 06:43:15,107 INFO L78 Accepts]: Start accepts. Automaton has 7020 states and 8300 transitions. Word has length 218 [2022-01-10 06:43:15,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:15,108 INFO L470 AbstractCegarLoop]: Abstraction has 7020 states and 8300 transitions. [2022-01-10 06:43:15,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.666666666666664) internal successors, (137), 3 states have internal predecessors, (137), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:15,108 INFO L276 IsEmpty]: Start isEmpty. Operand 7020 states and 8300 transitions. [2022-01-10 06:43:15,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-10 06:43:15,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:15,112 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:15,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:15,318 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 06:43:15,319 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:15,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:15,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1008321752, now seen corresponding path program 1 times [2022-01-10 06:43:15,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:15,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1514058789] [2022-01-10 06:43:15,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:15,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:15,320 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:15,320 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 06:43:15,323 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 06:43:15,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:15,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:43:15,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:15,791 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:43:15,792 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:15,792 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:15,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1514058789] [2022-01-10 06:43:15,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1514058789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:15,792 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:15,792 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:15,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983395986] [2022-01-10 06:43:15,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:15,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:43:15,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:15,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:43:15,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:43:15,793 INFO L87 Difference]: Start difference. First operand 7020 states and 8300 transitions. Second operand has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:16,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:16,880 INFO L93 Difference]: Finished difference Result 20558 states and 24296 transitions. [2022-01-10 06:43:16,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:16,885 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 219 [2022-01-10 06:43:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:16,916 INFO L225 Difference]: With dead ends: 20558 [2022-01-10 06:43:16,916 INFO L226 Difference]: Without dead ends: 13556 [2022-01-10 06:43:16,929 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 217 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 06:43:16,929 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 489 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 1192 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:16,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 1192 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:16,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13556 states. [2022-01-10 06:43:17,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13556 to 13552. [2022-01-10 06:43:17,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13552 states, 12798 states have (on average 1.1847163619315517) internal successors, (15162), 12829 states have internal predecessors, (15162), 385 states have call successors, (385), 337 states have call predecessors, (385), 368 states have return successors, (451), 387 states have call predecessors, (451), 383 states have call successors, (451) [2022-01-10 06:43:17,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13552 states to 13552 states and 15998 transitions. [2022-01-10 06:43:17,764 INFO L78 Accepts]: Start accepts. Automaton has 13552 states and 15998 transitions. Word has length 219 [2022-01-10 06:43:17,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:17,764 INFO L470 AbstractCegarLoop]: Abstraction has 13552 states and 15998 transitions. [2022-01-10 06:43:17,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.75) internal successors, (147), 4 states have internal predecessors, (147), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:17,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13552 states and 15998 transitions. [2022-01-10 06:43:17,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2022-01-10 06:43:17,772 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:17,772 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:17,780 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 06:43:17,979 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 06:43:17,980 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:17,980 INFO L85 PathProgramCache]: Analyzing trace with hash -1065699050, now seen corresponding path program 1 times [2022-01-10 06:43:17,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:17,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [167731651] [2022-01-10 06:43:17,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:17,981 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:17,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:17,982 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 06:43:17,983 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 06:43:18,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:18,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 441 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:18,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:18,260 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 06:43:18,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:18,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:18,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [167731651] [2022-01-10 06:43:18,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [167731651] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:18,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:18,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:18,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794206418] [2022-01-10 06:43:18,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:18,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:18,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:18,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:18,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:18,261 INFO L87 Difference]: Start difference. First operand 13552 states and 15998 transitions. Second operand has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:19,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:19,204 INFO L93 Difference]: Finished difference Result 27076 states and 31949 transitions. [2022-01-10 06:43:19,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:19,204 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 219 [2022-01-10 06:43:19,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:19,230 INFO L225 Difference]: With dead ends: 27076 [2022-01-10 06:43:19,231 INFO L226 Difference]: Without dead ends: 13542 [2022-01-10 06:43:19,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 218 GetRequests, 217 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:19,246 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 380 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 380 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:19,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [380 Valid, 388 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:19,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13542 states. [2022-01-10 06:43:20,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13542 to 13542. [2022-01-10 06:43:20,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13542 states, 12791 states have (on average 1.1843483699476194) internal successors, (15149), 12821 states have internal predecessors, (15149), 382 states have call successors, (382), 337 states have call predecessors, (382), 368 states have return successors, (448), 384 states have call predecessors, (448), 380 states have call successors, (448) [2022-01-10 06:43:20,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13542 states to 13542 states and 15979 transitions. [2022-01-10 06:43:20,109 INFO L78 Accepts]: Start accepts. Automaton has 13542 states and 15979 transitions. Word has length 219 [2022-01-10 06:43:20,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:20,109 INFO L470 AbstractCegarLoop]: Abstraction has 13542 states and 15979 transitions. [2022-01-10 06:43:20,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.0) internal successors, (138), 3 states have internal predecessors, (138), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:20,109 INFO L276 IsEmpty]: Start isEmpty. Operand 13542 states and 15979 transitions. [2022-01-10 06:43:20,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 06:43:20,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:20,116 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:20,141 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 06:43:20,324 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 06:43:20,324 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:20,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:20,325 INFO L85 PathProgramCache]: Analyzing trace with hash -1553831638, now seen corresponding path program 1 times [2022-01-10 06:43:20,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:20,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [210633435] [2022-01-10 06:43:20,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:20,325 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:20,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:20,326 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 06:43:20,328 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 06:43:20,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:20,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:43:20,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:20,780 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:43:20,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:20,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:20,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [210633435] [2022-01-10 06:43:20,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [210633435] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:20,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:20,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:20,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197826599] [2022-01-10 06:43:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:20,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:43:20,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:43:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:43:20,781 INFO L87 Difference]: Start difference. First operand 13542 states and 15979 transitions. Second operand has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:22,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:22,587 INFO L93 Difference]: Finished difference Result 39667 states and 46801 transitions. [2022-01-10 06:43:22,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:22,587 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 220 [2022-01-10 06:43:22,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:22,636 INFO L225 Difference]: With dead ends: 39667 [2022-01-10 06:43:22,637 INFO L226 Difference]: Without dead ends: 26143 [2022-01-10 06:43:22,655 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 218 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 06:43:22,656 INFO L933 BasicCegarLoop]: 533 mSDtfsCounter, 482 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 488 SdHoareTripleChecker+Valid, 1158 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:22,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [488 Valid, 1158 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:22,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26143 states. [2022-01-10 06:43:24,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26143 to 26139. [2022-01-10 06:43:24,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26139 states, 24689 states have (on average 1.1825104297460407) internal successors, (29195), 24756 states have internal predecessors, (29195), 729 states have call successors, (729), 641 states have call predecessors, (729), 720 states have return successors, (891), 743 states have call predecessors, (891), 727 states have call successors, (891) [2022-01-10 06:43:24,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26139 states to 26139 states and 30815 transitions. [2022-01-10 06:43:24,692 INFO L78 Accepts]: Start accepts. Automaton has 26139 states and 30815 transitions. Word has length 220 [2022-01-10 06:43:24,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:24,692 INFO L470 AbstractCegarLoop]: Abstraction has 26139 states and 30815 transitions. [2022-01-10 06:43:24,692 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.0) internal successors, (148), 4 states have internal predecessors, (148), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:24,692 INFO L276 IsEmpty]: Start isEmpty. Operand 26139 states and 30815 transitions. [2022-01-10 06:43:24,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-01-10 06:43:24,704 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:24,704 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:24,729 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:24,912 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 06:43:24,912 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:24,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:24,913 INFO L85 PathProgramCache]: Analyzing trace with hash 667114856, now seen corresponding path program 1 times [2022-01-10 06:43:24,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:24,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [625914888] [2022-01-10 06:43:24,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:24,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:24,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:24,914 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:24,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 06:43:25,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:25,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:25,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:25,259 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 06:43:25,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:25,260 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:25,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [625914888] [2022-01-10 06:43:25,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [625914888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:25,260 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:25,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:25,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [127033127] [2022-01-10 06:43:25,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:25,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:25,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:25,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:25,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:25,261 INFO L87 Difference]: Start difference. First operand 26139 states and 30815 transitions. Second operand has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:27,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:27,337 INFO L93 Difference]: Finished difference Result 52251 states and 61586 transitions. [2022-01-10 06:43:27,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 06:43:27,338 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 220 [2022-01-10 06:43:27,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:27,423 INFO L225 Difference]: With dead ends: 52251 [2022-01-10 06:43:27,423 INFO L226 Difference]: Without dead ends: 26130 [2022-01-10 06:43:27,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 219 GetRequests, 218 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:27,457 INFO L933 BasicCegarLoop]: 387 mSDtfsCounter, 378 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:27,457 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [378 Valid, 387 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 06:43:27,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26130 states. [2022-01-10 06:43:29,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26130 to 26130. [2022-01-10 06:43:29,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26130 states, 24683 states have (on average 1.1823522262285784) internal successors, (29184), 24749 states have internal predecessors, (29184), 726 states have call successors, (726), 641 states have call predecessors, (726), 720 states have return successors, (888), 740 states have call predecessors, (888), 724 states have call successors, (888) [2022-01-10 06:43:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26130 states to 26130 states and 30798 transitions. [2022-01-10 06:43:29,293 INFO L78 Accepts]: Start accepts. Automaton has 26130 states and 30798 transitions. Word has length 220 [2022-01-10 06:43:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:29,294 INFO L470 AbstractCegarLoop]: Abstraction has 26130 states and 30798 transitions. [2022-01-10 06:43:29,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 46.333333333333336) internal successors, (139), 3 states have internal predecessors, (139), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 06:43:29,294 INFO L276 IsEmpty]: Start isEmpty. Operand 26130 states and 30798 transitions. [2022-01-10 06:43:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2022-01-10 06:43:29,304 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:29,305 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:29,313 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:29,512 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:29,513 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:29,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:29,513 INFO L85 PathProgramCache]: Analyzing trace with hash 20153628, now seen corresponding path program 1 times [2022-01-10 06:43:29,513 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:29,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [96460058] [2022-01-10 06:43:29,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:29,514 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:29,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:29,515 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:29,516 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 06:43:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:29,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:43:29,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:29,958 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:43:29,958 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:29,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:29,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [96460058] [2022-01-10 06:43:29,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [96460058] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:29,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:29,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:29,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945357904] [2022-01-10 06:43:29,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:29,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:43:29,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:29,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:43:29,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:43:29,960 INFO L87 Difference]: Start difference. First operand 26130 states and 30798 transitions. Second operand has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:34,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:34,275 INFO L93 Difference]: Finished difference Result 85938 states and 100956 transitions. [2022-01-10 06:43:34,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:34,276 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 221 [2022-01-10 06:43:34,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:34,420 INFO L225 Difference]: With dead ends: 85938 [2022-01-10 06:43:34,420 INFO L226 Difference]: Without dead ends: 59826 [2022-01-10 06:43:34,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 222 GetRequests, 219 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 06:43:34,463 INFO L933 BasicCegarLoop]: 400 mSDtfsCounter, 512 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:34,463 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 898 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:34,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59826 states. [2022-01-10 06:43:38,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59826 to 58606. [2022-01-10 06:43:38,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58606 states, 55335 states have (on average 1.1763983012559862) internal successors, (65096), 55737 states have internal predecessors, (65096), 1382 states have call successors, (1382), 1217 states have call predecessors, (1382), 1888 states have return successors, (2248), 1652 states have call predecessors, (2248), 1380 states have call successors, (2248) [2022-01-10 06:43:38,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58606 states to 58606 states and 68726 transitions. [2022-01-10 06:43:38,980 INFO L78 Accepts]: Start accepts. Automaton has 58606 states and 68726 transitions. Word has length 221 [2022-01-10 06:43:38,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:38,980 INFO L470 AbstractCegarLoop]: Abstraction has 58606 states and 68726 transitions. [2022-01-10 06:43:38,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.25) internal successors, (149), 4 states have internal predecessors, (149), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:38,981 INFO L276 IsEmpty]: Start isEmpty. Operand 58606 states and 68726 transitions. [2022-01-10 06:43:39,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-10 06:43:39,002 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:39,002 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:39,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 06:43:39,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:39,212 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -390078234, now seen corresponding path program 1 times [2022-01-10 06:43:39,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:39,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245007995] [2022-01-10 06:43:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:39,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:39,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:39,221 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:39,222 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 06:43:39,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:39,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 06:43:39,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:39,664 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 06:43:39,664 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:39,664 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:39,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245007995] [2022-01-10 06:43:39,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245007995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:39,664 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:39,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 06:43:39,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897207529] [2022-01-10 06:43:39,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:39,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 06:43:39,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:39,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 06:43:39,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 06:43:39,665 INFO L87 Difference]: Start difference. First operand 58606 states and 68726 transitions. Second operand has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:48,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 06:43:48,141 INFO L93 Difference]: Finished difference Result 170369 states and 199705 transitions. [2022-01-10 06:43:48,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 06:43:48,142 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 222 [2022-01-10 06:43:48,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 06:43:48,585 INFO L225 Difference]: With dead ends: 170369 [2022-01-10 06:43:48,585 INFO L226 Difference]: Without dead ends: 111781 [2022-01-10 06:43:48,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 220 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 06:43:48,695 INFO L933 BasicCegarLoop]: 506 mSDtfsCounter, 468 mSDsluCounter, 580 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 474 SdHoareTripleChecker+Valid, 1086 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 06:43:48,695 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [474 Valid, 1086 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 06:43:48,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111781 states. [2022-01-10 06:43:57,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111781 to 111777. [2022-01-10 06:43:57,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111777 states, 105495 states have (on average 1.1745675150481065) internal successors, (123911), 106298 states have internal predecessors, (123911), 2633 states have call successors, (2633), 2305 states have call predecessors, (2633), 3648 states have return successors, (4379), 3175 states have call predecessors, (4379), 2631 states have call successors, (4379) [2022-01-10 06:43:57,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111777 states to 111777 states and 130923 transitions. [2022-01-10 06:43:57,665 INFO L78 Accepts]: Start accepts. Automaton has 111777 states and 130923 transitions. Word has length 222 [2022-01-10 06:43:57,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 06:43:57,668 INFO L470 AbstractCegarLoop]: Abstraction has 111777 states and 130923 transitions. [2022-01-10 06:43:57,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 37.5) internal successors, (150), 4 states have internal predecessors, (150), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 06:43:57,668 INFO L276 IsEmpty]: Start isEmpty. Operand 111777 states and 130923 transitions. [2022-01-10 06:43:57,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2022-01-10 06:43:57,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 06:43:57,718 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 06:43:57,884 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 06:43:58,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 06:43:58,084 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 06:43:58,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 06:43:58,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1830868260, now seen corresponding path program 1 times [2022-01-10 06:43:58,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 06:43:58,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919935184] [2022-01-10 06:43:58,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 06:43:58,085 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 06:43:58,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 06:43:58,086 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 06:43:58,086 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 06:43:58,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 06:43:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 447 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 06:43:58,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 06:43:58,498 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2022-01-10 06:43:58,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 06:43:58,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 06:43:58,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919935184] [2022-01-10 06:43:58,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919935184] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 06:43:58,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 06:43:58,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 06:43:58,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33770268] [2022-01-10 06:43:58,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 06:43:58,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 06:43:58,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 06:43:58,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 06:43:58,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 06:43:58,500 INFO L87 Difference]: Start difference. First operand 111777 states and 130923 transitions. Second operand has 3 states, 3 states have (on average 47.0) internal successors, (141), 3 states have internal predecessors, (141), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7)