/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf -i ../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 07:50:10,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 07:50:10,083 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 07:50:10,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 07:50:10,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 07:50:10,165 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 07:50:10,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 07:50:10,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 07:50:10,168 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 07:50:10,169 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 07:50:10,170 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 07:50:10,171 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 07:50:10,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 07:50:10,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 07:50:10,172 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 07:50:10,173 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 07:50:10,174 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 07:50:10,175 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 07:50:10,176 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 07:50:10,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 07:50:10,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 07:50:10,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 07:50:10,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 07:50:10,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 07:50:10,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 07:50:10,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 07:50:10,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 07:50:10,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 07:50:10,185 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 07:50:10,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 07:50:10,186 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 07:50:10,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 07:50:10,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 07:50:10,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 07:50:10,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 07:50:10,188 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 07:50:10,189 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 07:50:10,189 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 07:50:10,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 07:50:10,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 07:50:10,190 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 07:50:10,191 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Bitvector.epf [2022-01-10 07:50:10,208 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 07:50:10,209 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 07:50:10,209 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 07:50:10,209 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 07:50:10,210 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 07:50:10,210 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 07:50:10,210 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 07:50:10,211 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 07:50:10,211 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 07:50:10,211 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 07:50:10,211 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 07:50:10,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 07:50:10,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 07:50:10,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 07:50:10,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 07:50:10,212 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 07:50:10,212 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 07:50:10,212 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 07:50:10,213 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 07:50:10,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 07:50:10,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 07:50:10,213 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 07:50:10,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 07:50:10,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:10,214 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 07:50:10,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 07:50:10,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 07:50:10,214 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 07:50:10,214 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 07:50:10,214 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 07:50:10,215 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 07:50:10,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 07:50:10,215 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 07:50:10,215 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 07:50:10,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 07:50:10,488 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 07:50:10,490 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 07:50:10,491 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 07:50:10,492 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 07:50:10,493 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c [2022-01-10 07:50:10,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fddc701/17046b36165d47519c9bf7cb7db38cf8/FLAG5a3fe9fe9 [2022-01-10 07:50:11,434 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 07:50:11,435 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c [2022-01-10 07:50:11,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fddc701/17046b36165d47519c9bf7cb7db38cf8/FLAG5a3fe9fe9 [2022-01-10 07:50:11,534 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9fddc701/17046b36165d47519c9bf7cb7db38cf8 [2022-01-10 07:50:11,537 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 07:50:11,539 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 07:50:11,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:11,541 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 07:50:11,544 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 07:50:11,545 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:11" (1/1) ... [2022-01-10 07:50:11,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@776abfc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:11, skipping insertion in model container [2022-01-10 07:50:11,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 07:50:11" (1/1) ... [2022-01-10 07:50:11,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 07:50:11,720 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 07:50:13,483 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2022-01-10 07:50:13,512 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:50:13,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:13,687 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 07:50:14,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c[375709,375722] [2022-01-10 07:50:14,452 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/Problem05_label48+token_ring.04.cil-1.c[383339,383352] [2022-01-10 07:50:14,471 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 07:50:14,563 INFO L208 MainTranslator]: Completed translation [2022-01-10 07:50:14,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14 WrapperNode [2022-01-10 07:50:14,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 07:50:14,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:14,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 07:50:14,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 07:50:14,571 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:14,658 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,001 INFO L137 Inliner]: procedures = 53, calls = 53, calls flagged for inlining = 30, calls inlined = 30, statements flattened = 12709 [2022-01-10 07:50:15,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 07:50:15,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 07:50:15,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 07:50:15,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 07:50:15,014 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,014 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,103 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,104 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,380 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,413 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,438 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,494 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 07:50:15,495 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 07:50:15,495 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 07:50:15,495 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 07:50:15,497 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (1/1) ... [2022-01-10 07:50:15,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 07:50:15,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 07:50:15,533 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-10 07:50:15,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-10 07:50:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 07:50:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-01-10 07:50:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-01-10 07:50:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 07:50:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 07:50:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-01-10 07:50:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-01-10 07:50:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 07:50:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-01-10 07:50:15,575 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-01-10 07:50:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-01-10 07:50:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-01-10 07:50:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-01-10 07:50:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-01-10 07:50:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 07:50:15,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 07:50:15,667 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 07:50:15,668 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 07:50:23,601 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 07:50:23,631 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 07:50:23,631 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-01-10 07:50:23,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:23 BoogieIcfgContainer [2022-01-10 07:50:23,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 07:50:23,637 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 07:50:23,637 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 07:50:23,640 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 07:50:23,640 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 07:50:11" (1/3) ... [2022-01-10 07:50:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f891885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:23, skipping insertion in model container [2022-01-10 07:50:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 07:50:14" (2/3) ... [2022-01-10 07:50:23,641 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f891885 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 07:50:23, skipping insertion in model container [2022-01-10 07:50:23,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 07:50:23" (3/3) ... [2022-01-10 07:50:23,643 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label48+token_ring.04.cil-1.c [2022-01-10 07:50:23,647 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 07:50:23,647 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 07:50:23,697 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 07:50:23,703 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-10 07:50:23,704 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 07:50:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:50:23,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:23,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:23,766 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] [2022-01-10 07:50:23,766 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:23,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1353629608, now seen corresponding path program 1 times [2022-01-10 07:50:23,781 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:23,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1362556851] [2022-01-10 07:50:23,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:23,782 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:23,782 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:23,783 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:23,784 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-01-10 07:50:23,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:23,914 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:24,045 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:24,290 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:24,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:24,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1362556851] [2022-01-10 07:50:24,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1362556851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:24,292 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:24,292 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:24,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204561884] [2022-01-10 07:50:24,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:24,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:24,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:24,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:24,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:24,335 INFO L87 Difference]: Start difference. First operand has 2365 states, 2338 states have (on average 1.8541488451668093) internal successors, (4335), 2341 states have internal predecessors, (4335), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:24,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:24,496 INFO L93 Difference]: Finished difference Result 4724 states and 8731 transitions. [2022-01-10 07:50:24,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:24,499 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:24,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:24,523 INFO L225 Difference]: With dead ends: 4724 [2022-01-10 07:50:24,523 INFO L226 Difference]: Without dead ends: 2298 [2022-01-10 07:50:24,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:24,538 INFO L933 BasicCegarLoop]: 4292 mSDtfsCounter, 263 mSDsluCounter, 4022 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 8314 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:24,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 8314 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:24,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2298 states. [2022-01-10 07:50:24,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2298 to 2298. [2022-01-10 07:50:24,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2298 states, 2272 states have (on average 1.8433098591549295) internal successors, (4188), 2274 states have internal predecessors, (4188), 18 states have call successors, (18), 6 states have call predecessors, (18), 6 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2022-01-10 07:50:24,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 4224 transitions. [2022-01-10 07:50:24,671 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 4224 transitions. Word has length 90 [2022-01-10 07:50:24,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:24,673 INFO L470 AbstractCegarLoop]: Abstraction has 2298 states and 4224 transitions. [2022-01-10 07:50:24,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:24,673 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 4224 transitions. [2022-01-10 07:50:24,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:24,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:24,684 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:24,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:24,894 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:24,894 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:24,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:24,895 INFO L85 PathProgramCache]: Analyzing trace with hash -295791530, now seen corresponding path program 1 times [2022-01-10 07:50:24,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:24,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [526233746] [2022-01-10 07:50:24,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:24,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:24,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:24,898 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:24,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-01-10 07:50:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:25,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:25,008 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:25,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:25,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:25,229 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:25,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [526233746] [2022-01-10 07:50:25,230 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [526233746] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:25,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:25,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:25,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852736504] [2022-01-10 07:50:25,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:25,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:25,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:25,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:25,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:25,237 INFO L87 Difference]: Start difference. First operand 2298 states and 4224 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:25,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:25,682 INFO L93 Difference]: Finished difference Result 2644 states and 4754 transitions. [2022-01-10 07:50:25,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:25,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:25,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:25,695 INFO L225 Difference]: With dead ends: 2644 [2022-01-10 07:50:25,695 INFO L226 Difference]: Without dead ends: 2479 [2022-01-10 07:50:25,697 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:25,698 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4425 mSDsluCounter, 8425 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4437 SdHoareTripleChecker+Valid, 12667 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:25,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4437 Valid, 12667 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 07:50:25,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2022-01-10 07:50:25,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2466. [2022-01-10 07:50:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.824793388429752) internal successors, (4416), 2423 states have internal predecessors, (4416), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:50:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4479 transitions. [2022-01-10 07:50:25,757 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4479 transitions. Word has length 90 [2022-01-10 07:50:25,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:25,758 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4479 transitions. [2022-01-10 07:50:25,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4479 transitions. [2022-01-10 07:50:25,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:25,759 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:25,759 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] [2022-01-10 07:50:25,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:25,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:25,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:25,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash -1470450982, now seen corresponding path program 1 times [2022-01-10 07:50:25,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:25,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [49571947] [2022-01-10 07:50:25,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:25,974 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:25,974 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:25,975 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:25,976 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-01-10 07:50:26,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:26,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:26,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:26,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:26,256 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [49571947] [2022-01-10 07:50:26,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [49571947] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:26,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:26,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:26,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477290651] [2022-01-10 07:50:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:26,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:26,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:26,258 INFO L87 Difference]: Start difference. First operand 2466 states and 4479 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:26,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:26,524 INFO L93 Difference]: Finished difference Result 2799 states and 4989 transitions. [2022-01-10 07:50:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:26,525 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:26,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:26,534 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:50:26,535 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:50:26,537 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:26,538 INFO L933 BasicCegarLoop]: 4200 mSDtfsCounter, 4294 mSDsluCounter, 8193 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12393 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:26,538 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12393 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:26,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:50:26,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:50:26,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.821900826446281) internal successors, (4409), 2423 states have internal predecessors, (4409), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:50:26,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4472 transitions. [2022-01-10 07:50:26,595 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4472 transitions. Word has length 90 [2022-01-10 07:50:26,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:26,595 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4472 transitions. [2022-01-10 07:50:26,595 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:26,595 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4472 transitions. [2022-01-10 07:50:26,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:26,596 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:26,597 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] [2022-01-10 07:50:26,611 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:26,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:26,808 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:26,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:26,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1092701226, now seen corresponding path program 1 times [2022-01-10 07:50:26,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:26,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239190626] [2022-01-10 07:50:26,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:26,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:26,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:26,811 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:26,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-01-10 07:50:26,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:26,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:26,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:27,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:27,056 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:27,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:27,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239190626] [2022-01-10 07:50:27,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239190626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:27,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:27,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:27,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41166262] [2022-01-10 07:50:27,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:27,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:27,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:27,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:27,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:27,058 INFO L87 Difference]: Start difference. First operand 2466 states and 4472 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:27,309 INFO L93 Difference]: Finished difference Result 2799 states and 4975 transitions. [2022-01-10 07:50:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:27,309 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:27,320 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:50:27,320 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:50:27,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:27,324 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 4288 mSDsluCounter, 8189 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4300 SdHoareTripleChecker+Valid, 12386 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:27,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4300 Valid, 12386 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:27,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:50:27,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:50:27,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8190082644628098) internal successors, (4402), 2423 states have internal predecessors, (4402), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:50:27,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4465 transitions. [2022-01-10 07:50:27,442 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4465 transitions. Word has length 90 [2022-01-10 07:50:27,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:27,442 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4465 transitions. [2022-01-10 07:50:27,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:27,442 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4465 transitions. [2022-01-10 07:50:27,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:27,444 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:27,444 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] [2022-01-10 07:50:27,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:27,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:27,656 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:27,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:27,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1291223512, now seen corresponding path program 1 times [2022-01-10 07:50:27,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:27,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1621617320] [2022-01-10 07:50:27,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:27,657 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:27,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:27,658 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:27,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-01-10 07:50:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:27,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:27,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:27,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:27,991 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:27,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1621617320] [2022-01-10 07:50:27,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1621617320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:27,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:27,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:27,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696975596] [2022-01-10 07:50:27,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:27,992 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:27,992 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:27,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:27,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:27,993 INFO L87 Difference]: Start difference. First operand 2466 states and 4465 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:28,239 INFO L93 Difference]: Finished difference Result 2799 states and 4961 transitions. [2022-01-10 07:50:28,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:28,239 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:28,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:28,249 INFO L225 Difference]: With dead ends: 2799 [2022-01-10 07:50:28,249 INFO L226 Difference]: Without dead ends: 2466 [2022-01-10 07:50:28,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:28,251 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 4282 mSDsluCounter, 8185 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4294 SdHoareTripleChecker+Valid, 12379 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:28,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4294 Valid, 12379 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:28,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2466 states. [2022-01-10 07:50:28,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2466 to 2466. [2022-01-10 07:50:28,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2466 states, 2420 states have (on average 1.8161157024793388) internal successors, (4395), 2423 states have internal predecessors, (4395), 31 states have call successors, (31), 12 states have call predecessors, (31), 13 states have return successors, (32), 31 states have call predecessors, (32), 31 states have call successors, (32) [2022-01-10 07:50:28,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2466 states to 2466 states and 4458 transitions. [2022-01-10 07:50:28,307 INFO L78 Accepts]: Start accepts. Automaton has 2466 states and 4458 transitions. Word has length 90 [2022-01-10 07:50:28,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:28,308 INFO L470 AbstractCegarLoop]: Abstraction has 2466 states and 4458 transitions. [2022-01-10 07:50:28,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:28,308 INFO L276 IsEmpty]: Start isEmpty. Operand 2466 states and 4458 transitions. [2022-01-10 07:50:28,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:28,309 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:28,309 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] [2022-01-10 07:50:28,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:28,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:28,522 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:28,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:28,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1430163924, now seen corresponding path program 1 times [2022-01-10 07:50:28,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:28,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1823417595] [2022-01-10 07:50:28,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:28,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:28,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:28,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:28,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-01-10 07:50:28,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:28,619 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:28,621 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:28,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:28,777 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:28,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1823417595] [2022-01-10 07:50:28,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1823417595] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:28,778 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:28,778 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:28,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328218402] [2022-01-10 07:50:28,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:28,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:28,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:28,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:28,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:28,779 INFO L87 Difference]: Start difference. First operand 2466 states and 4458 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:29,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:29,086 INFO L93 Difference]: Finished difference Result 2879 states and 5069 transitions. [2022-01-10 07:50:29,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:29,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:29,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:29,096 INFO L225 Difference]: With dead ends: 2879 [2022-01-10 07:50:29,096 INFO L226 Difference]: Without dead ends: 2546 [2022-01-10 07:50:29,097 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:29,098 INFO L933 BasicCegarLoop]: 4191 mSDtfsCounter, 4321 mSDsluCounter, 8180 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4333 SdHoareTripleChecker+Valid, 12371 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:29,098 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4333 Valid, 12371 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:29,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2546 states. [2022-01-10 07:50:29,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2546 to 2546. [2022-01-10 07:50:29,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2546 states, 2494 states have (on average 1.8003207698476342) internal successors, (4490), 2497 states have internal predecessors, (4490), 33 states have call successors, (33), 16 states have call predecessors, (33), 17 states have return successors, (34), 33 states have call predecessors, (34), 33 states have call successors, (34) [2022-01-10 07:50:29,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2546 states to 2546 states and 4557 transitions. [2022-01-10 07:50:29,162 INFO L78 Accepts]: Start accepts. Automaton has 2546 states and 4557 transitions. Word has length 90 [2022-01-10 07:50:29,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:29,162 INFO L470 AbstractCegarLoop]: Abstraction has 2546 states and 4557 transitions. [2022-01-10 07:50:29,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:29,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2546 states and 4557 transitions. [2022-01-10 07:50:29,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:29,164 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:29,164 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] [2022-01-10 07:50:29,176 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-01-10 07:50:29,373 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:29,374 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:29,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:29,374 INFO L85 PathProgramCache]: Analyzing trace with hash -61826927, now seen corresponding path program 1 times [2022-01-10 07:50:29,374 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:29,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [369089091] [2022-01-10 07:50:29,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:29,375 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:29,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:29,376 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:29,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-01-10 07:50:29,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:29,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:29,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:29,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:29,630 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:29,630 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:29,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [369089091] [2022-01-10 07:50:29,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [369089091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:29,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:29,631 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:29,631 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326221787] [2022-01-10 07:50:29,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:29,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:29,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:29,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:29,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:29,632 INFO L87 Difference]: Start difference. First operand 2546 states and 4557 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:29,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:29,972 INFO L93 Difference]: Finished difference Result 3039 states and 5267 transitions. [2022-01-10 07:50:29,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:29,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:29,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:29,986 INFO L225 Difference]: With dead ends: 3039 [2022-01-10 07:50:29,991 INFO L226 Difference]: Without dead ends: 2626 [2022-01-10 07:50:29,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:29,995 INFO L933 BasicCegarLoop]: 4189 mSDtfsCounter, 4314 mSDsluCounter, 8176 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4326 SdHoareTripleChecker+Valid, 12365 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:29,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4326 Valid, 12365 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:30,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states. [2022-01-10 07:50:30,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2022-01-10 07:50:30,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2568 states have (on average 1.783878504672897) internal successors, (4581), 2571 states have internal predecessors, (4581), 35 states have call successors, (35), 20 states have call predecessors, (35), 21 states have return successors, (36), 35 states have call predecessors, (36), 35 states have call successors, (36) [2022-01-10 07:50:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 4652 transitions. [2022-01-10 07:50:30,080 INFO L78 Accepts]: Start accepts. Automaton has 2626 states and 4652 transitions. Word has length 90 [2022-01-10 07:50:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:30,081 INFO L470 AbstractCegarLoop]: Abstraction has 2626 states and 4652 transitions. [2022-01-10 07:50:30,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2626 states and 4652 transitions. [2022-01-10 07:50:30,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:30,082 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:30,083 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] [2022-01-10 07:50:30,098 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:30,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:30,293 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:30,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:30,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1935075861, now seen corresponding path program 1 times [2022-01-10 07:50:30,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1467418558] [2022-01-10 07:50:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:30,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:30,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:30,300 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:30,302 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-01-10 07:50:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:30,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:30,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:30,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:30,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:30,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1467418558] [2022-01-10 07:50:30,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1467418558] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:30,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:30,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:30,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024193980] [2022-01-10 07:50:30,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:30,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:30,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:30,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:30,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:30,543 INFO L87 Difference]: Start difference. First operand 2626 states and 4652 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:30,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:30,868 INFO L93 Difference]: Finished difference Result 3199 states and 5457 transitions. [2022-01-10 07:50:30,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:30,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:30,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:30,880 INFO L225 Difference]: With dead ends: 3199 [2022-01-10 07:50:30,881 INFO L226 Difference]: Without dead ends: 2706 [2022-01-10 07:50:30,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:30,885 INFO L933 BasicCegarLoop]: 4184 mSDtfsCounter, 4308 mSDsluCounter, 8172 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4320 SdHoareTripleChecker+Valid, 12356 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:30,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4320 Valid, 12356 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-01-10 07:50:30,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2706. [2022-01-10 07:50:30,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2706 states, 2642 states have (on average 1.7668433005299016) internal successors, (4668), 2645 states have internal predecessors, (4668), 37 states have call successors, (37), 24 states have call predecessors, (37), 25 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2022-01-10 07:50:30,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2706 states to 2706 states and 4743 transitions. [2022-01-10 07:50:30,964 INFO L78 Accepts]: Start accepts. Automaton has 2706 states and 4743 transitions. Word has length 90 [2022-01-10 07:50:30,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:30,964 INFO L470 AbstractCegarLoop]: Abstraction has 2706 states and 4743 transitions. [2022-01-10 07:50:30,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:30,964 INFO L276 IsEmpty]: Start isEmpty. Operand 2706 states and 4743 transitions. [2022-01-10 07:50:30,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:30,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:30,966 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] [2022-01-10 07:50:30,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:31,175 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:31,175 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:31,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:31,176 INFO L85 PathProgramCache]: Analyzing trace with hash 281106770, now seen corresponding path program 1 times [2022-01-10 07:50:31,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:31,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184840881] [2022-01-10 07:50:31,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:31,177 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:31,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:31,178 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:31,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-01-10 07:50:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:31,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:31,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:31,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:31,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:31,504 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:31,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184840881] [2022-01-10 07:50:31,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184840881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:31,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:31,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:31,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357329505] [2022-01-10 07:50:31,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:31,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:31,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:31,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:31,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:31,506 INFO L87 Difference]: Start difference. First operand 2706 states and 4743 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:31,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:31,813 INFO L93 Difference]: Finished difference Result 3359 states and 5639 transitions. [2022-01-10 07:50:31,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:31,814 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:31,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:31,841 INFO L225 Difference]: With dead ends: 3359 [2022-01-10 07:50:31,841 INFO L226 Difference]: Without dead ends: 2786 [2022-01-10 07:50:31,844 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:31,845 INFO L933 BasicCegarLoop]: 4181 mSDtfsCounter, 4301 mSDsluCounter, 8168 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4313 SdHoareTripleChecker+Valid, 12349 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:31,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4313 Valid, 12349 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:31,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2786 states. [2022-01-10 07:50:31,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2786 to 2786. [2022-01-10 07:50:31,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2786 states, 2716 states have (on average 1.7492636229749632) internal successors, (4751), 2719 states have internal predecessors, (4751), 39 states have call successors, (39), 28 states have call predecessors, (39), 29 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:31,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2786 states to 2786 states and 4830 transitions. [2022-01-10 07:50:31,929 INFO L78 Accepts]: Start accepts. Automaton has 2786 states and 4830 transitions. Word has length 90 [2022-01-10 07:50:31,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:31,929 INFO L470 AbstractCegarLoop]: Abstraction has 2786 states and 4830 transitions. [2022-01-10 07:50:31,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:31,930 INFO L276 IsEmpty]: Start isEmpty. Operand 2786 states and 4830 transitions. [2022-01-10 07:50:31,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:31,931 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:31,931 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:31,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:32,140 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:32,140 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:32,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:32,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1386185175, now seen corresponding path program 1 times [2022-01-10 07:50:32,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:32,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [67167052] [2022-01-10 07:50:32,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:32,142 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:32,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:32,144 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:32,177 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-01-10 07:50:32,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:32,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:32,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:32,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:32,385 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:32,385 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:32,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [67167052] [2022-01-10 07:50:32,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [67167052] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:32,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:32,385 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:32,385 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332718927] [2022-01-10 07:50:32,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:32,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:32,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:32,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:32,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:32,387 INFO L87 Difference]: Start difference. First operand 2786 states and 4830 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:32,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:32,690 INFO L93 Difference]: Finished difference Result 3513 states and 5805 transitions. [2022-01-10 07:50:32,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:32,691 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:32,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:32,698 INFO L225 Difference]: With dead ends: 3513 [2022-01-10 07:50:32,698 INFO L226 Difference]: Without dead ends: 2860 [2022-01-10 07:50:32,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:32,702 INFO L933 BasicCegarLoop]: 4178 mSDtfsCounter, 4294 mSDsluCounter, 8164 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4306 SdHoareTripleChecker+Valid, 12342 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:32,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4306 Valid, 12342 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2860 states. [2022-01-10 07:50:32,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2860 to 2860. [2022-01-10 07:50:32,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2860 states, 2788 states have (on average 1.7317073170731707) internal successors, (4828), 2791 states have internal predecessors, (4828), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:32,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2860 states to 2860 states and 4907 transitions. [2022-01-10 07:50:32,776 INFO L78 Accepts]: Start accepts. Automaton has 2860 states and 4907 transitions. Word has length 90 [2022-01-10 07:50:32,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:32,778 INFO L470 AbstractCegarLoop]: Abstraction has 2860 states and 4907 transitions. [2022-01-10 07:50:32,778 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:32,779 INFO L276 IsEmpty]: Start isEmpty. Operand 2860 states and 4907 transitions. [2022-01-10 07:50:32,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:32,780 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:32,780 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] [2022-01-10 07:50:32,791 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-01-10 07:50:32,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:32,989 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:32,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:32,990 INFO L85 PathProgramCache]: Analyzing trace with hash -163430701, now seen corresponding path program 1 times [2022-01-10 07:50:32,990 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:32,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [957341562] [2022-01-10 07:50:32,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:32,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:32,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:32,992 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:32,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-01-10 07:50:33,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:33,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:33,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:33,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:33,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:33,231 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:33,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [957341562] [2022-01-10 07:50:33,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [957341562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:33,232 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:33,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:33,232 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320783406] [2022-01-10 07:50:33,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:33,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:33,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:33,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:33,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:33,235 INFO L87 Difference]: Start difference. First operand 2860 states and 4907 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:33,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:33,334 INFO L93 Difference]: Finished difference Result 3712 states and 6020 transitions. [2022-01-10 07:50:33,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:33,335 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:33,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:33,343 INFO L225 Difference]: With dead ends: 3712 [2022-01-10 07:50:33,343 INFO L226 Difference]: Without dead ends: 2986 [2022-01-10 07:50:33,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:33,347 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 166 mSDsluCounter, 12650 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 16847 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:33,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 16847 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:33,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2986 states. [2022-01-10 07:50:33,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2986 to 2866. [2022-01-10 07:50:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2866 states, 2794 states have (on average 1.72655690765927) internal successors, (4824), 2797 states have internal predecessors, (4824), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:33,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2866 states to 2866 states and 4903 transitions. [2022-01-10 07:50:33,425 INFO L78 Accepts]: Start accepts. Automaton has 2866 states and 4903 transitions. Word has length 90 [2022-01-10 07:50:33,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:33,425 INFO L470 AbstractCegarLoop]: Abstraction has 2866 states and 4903 transitions. [2022-01-10 07:50:33,426 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:33,426 INFO L276 IsEmpty]: Start isEmpty. Operand 2866 states and 4903 transitions. [2022-01-10 07:50:33,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:33,427 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:33,427 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] [2022-01-10 07:50:33,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:33,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:33,637 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:33,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:33,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1097486549, now seen corresponding path program 1 times [2022-01-10 07:50:33,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:33,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1938284797] [2022-01-10 07:50:33,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:33,638 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:33,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:33,639 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:33,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 07:50:33,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:33,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:33,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:33,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:33,860 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:33,860 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:33,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1938284797] [2022-01-10 07:50:33,860 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1938284797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:33,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:33,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:33,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247905070] [2022-01-10 07:50:33,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:33,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:33,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:33,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:33,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:33,862 INFO L87 Difference]: Start difference. First operand 2866 states and 4903 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:33,956 INFO L93 Difference]: Finished difference Result 3696 states and 5976 transitions. [2022-01-10 07:50:33,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:33,957 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:33,964 INFO L225 Difference]: With dead ends: 3696 [2022-01-10 07:50:33,964 INFO L226 Difference]: Without dead ends: 2964 [2022-01-10 07:50:33,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:33,967 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 127 mSDsluCounter, 12635 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 16832 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:33,968 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 16832 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:33,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2964 states. [2022-01-10 07:50:34,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2964 to 2872. [2022-01-10 07:50:34,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2872 states, 2800 states have (on average 1.7214285714285715) internal successors, (4820), 2803 states have internal predecessors, (4820), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:34,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2872 states to 2872 states and 4899 transitions. [2022-01-10 07:50:34,051 INFO L78 Accepts]: Start accepts. Automaton has 2872 states and 4899 transitions. Word has length 90 [2022-01-10 07:50:34,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:34,052 INFO L470 AbstractCegarLoop]: Abstraction has 2872 states and 4899 transitions. [2022-01-10 07:50:34,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:34,052 INFO L276 IsEmpty]: Start isEmpty. Operand 2872 states and 4899 transitions. [2022-01-10 07:50:34,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:34,053 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:34,053 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] [2022-01-10 07:50:34,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:34,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:34,263 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:34,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:34,263 INFO L85 PathProgramCache]: Analyzing trace with hash -931099561, now seen corresponding path program 1 times [2022-01-10 07:50:34,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:34,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [136416886] [2022-01-10 07:50:34,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:34,264 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:34,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:34,265 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:34,267 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 07:50:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:34,354 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:34,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:34,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:34,495 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:34,495 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:34,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [136416886] [2022-01-10 07:50:34,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [136416886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:34,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:34,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:34,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268048684] [2022-01-10 07:50:34,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:34,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:34,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:34,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:34,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:34,497 INFO L87 Difference]: Start difference. First operand 2872 states and 4899 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:34,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:34,610 INFO L93 Difference]: Finished difference Result 3680 states and 5932 transitions. [2022-01-10 07:50:34,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:34,610 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:34,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:34,618 INFO L225 Difference]: With dead ends: 3680 [2022-01-10 07:50:34,618 INFO L226 Difference]: Without dead ends: 2942 [2022-01-10 07:50:34,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:34,622 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 88 mSDsluCounter, 12620 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 16817 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:34,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 16817 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2942 states. [2022-01-10 07:50:34,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2942 to 2878. [2022-01-10 07:50:34,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2878 states, 2806 states have (on average 1.7163221667854598) internal successors, (4816), 2809 states have internal predecessors, (4816), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:34,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2878 states to 2878 states and 4895 transitions. [2022-01-10 07:50:34,697 INFO L78 Accepts]: Start accepts. Automaton has 2878 states and 4895 transitions. Word has length 90 [2022-01-10 07:50:34,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:34,698 INFO L470 AbstractCegarLoop]: Abstraction has 2878 states and 4895 transitions. [2022-01-10 07:50:34,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:34,698 INFO L276 IsEmpty]: Start isEmpty. Operand 2878 states and 4895 transitions. [2022-01-10 07:50:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:34,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:34,699 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] [2022-01-10 07:50:34,710 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:34,908 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:34,908 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:34,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:34,909 INFO L85 PathProgramCache]: Analyzing trace with hash -37613223, now seen corresponding path program 1 times [2022-01-10 07:50:34,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:34,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1183703548] [2022-01-10 07:50:34,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:34,909 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:34,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:34,910 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:34,912 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 07:50:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:34,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:34,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:35,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:35,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:35,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1183703548] [2022-01-10 07:50:35,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1183703548] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:35,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:35,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 07:50:35,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520240298] [2022-01-10 07:50:35,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:35,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:35,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:35,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:35,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:35,135 INFO L87 Difference]: Start difference. First operand 2878 states and 4895 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:35,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:35,231 INFO L93 Difference]: Finished difference Result 3664 states and 5888 transitions. [2022-01-10 07:50:35,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 07:50:35,231 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:35,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:35,238 INFO L225 Difference]: With dead ends: 3664 [2022-01-10 07:50:35,238 INFO L226 Difference]: Without dead ends: 2920 [2022-01-10 07:50:35,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 07:50:35,242 INFO L933 BasicCegarLoop]: 4197 mSDtfsCounter, 49 mSDsluCounter, 12605 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 16802 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:35,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 16802 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:35,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2920 states. [2022-01-10 07:50:35,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2920 to 2884. [2022-01-10 07:50:35,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7112375533428166) internal successors, (4812), 2815 states have internal predecessors, (4812), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4891 transitions. [2022-01-10 07:50:35,319 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4891 transitions. Word has length 90 [2022-01-10 07:50:35,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:35,319 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4891 transitions. [2022-01-10 07:50:35,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:35,319 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4891 transitions. [2022-01-10 07:50:35,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:35,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:35,320 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] [2022-01-10 07:50:35,333 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 07:50:35,530 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:35,530 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:35,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:35,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1882980389, now seen corresponding path program 1 times [2022-01-10 07:50:35,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:35,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [604781957] [2022-01-10 07:50:35,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:35,531 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:35,531 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:35,532 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:35,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 07:50:35,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:35,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 07:50:35,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:35,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:35,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:35,799 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:35,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [604781957] [2022-01-10 07:50:35,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [604781957] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:35,799 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:35,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:35,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945415772] [2022-01-10 07:50:35,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:35,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 07:50:35,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:35,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 07:50:35,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 07:50:35,801 INFO L87 Difference]: Start difference. First operand 2884 states and 4891 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:36,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:36,038 INFO L93 Difference]: Finished difference Result 3635 states and 5813 transitions. [2022-01-10 07:50:36,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 07:50:36,039 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 90 [2022-01-10 07:50:36,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:36,046 INFO L225 Difference]: With dead ends: 3635 [2022-01-10 07:50:36,046 INFO L226 Difference]: Without dead ends: 2884 [2022-01-10 07:50:36,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 07:50:36,050 INFO L933 BasicCegarLoop]: 4176 mSDtfsCounter, 4208 mSDsluCounter, 8161 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4219 SdHoareTripleChecker+Valid, 12337 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:36,050 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4219 Valid, 12337 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:36,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2884 states. [2022-01-10 07:50:36,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2884 to 2884. [2022-01-10 07:50:36,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2884 states, 2812 states have (on average 1.7087482219061167) internal successors, (4805), 2815 states have internal predecessors, (4805), 39 states have call successors, (39), 30 states have call predecessors, (39), 31 states have return successors, (40), 39 states have call predecessors, (40), 39 states have call successors, (40) [2022-01-10 07:50:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2884 states to 2884 states and 4884 transitions. [2022-01-10 07:50:36,127 INFO L78 Accepts]: Start accepts. Automaton has 2884 states and 4884 transitions. Word has length 90 [2022-01-10 07:50:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:36,128 INFO L470 AbstractCegarLoop]: Abstraction has 2884 states and 4884 transitions. [2022-01-10 07:50:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 07:50:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 2884 states and 4884 transitions. [2022-01-10 07:50:36,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-01-10 07:50:36,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:36,129 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] [2022-01-10 07:50:36,139 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:36,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:36,339 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:36,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:36,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1742431779, now seen corresponding path program 1 times [2022-01-10 07:50:36,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:36,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1566210445] [2022-01-10 07:50:36,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:36,340 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:36,340 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:36,341 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:36,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 07:50:36,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:36,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:36,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:36,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 07:50:36,603 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:36,603 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:36,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1566210445] [2022-01-10 07:50:36,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1566210445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:36,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:36,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:36,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328066072] [2022-01-10 07:50:36,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:36,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:36,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:36,605 INFO L87 Difference]: Start difference. First operand 2884 states and 4884 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:50:36,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:36,766 INFO L93 Difference]: Finished difference Result 4357 states and 6685 transitions. [2022-01-10 07:50:36,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:36,767 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 90 [2022-01-10 07:50:36,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:36,778 INFO L225 Difference]: With dead ends: 4357 [2022-01-10 07:50:36,778 INFO L226 Difference]: Without dead ends: 3607 [2022-01-10 07:50:36,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:36,783 INFO L933 BasicCegarLoop]: 4242 mSDtfsCounter, 4099 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4099 SdHoareTripleChecker+Valid, 4452 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:36,783 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4099 Valid, 4452 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:36,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3607 states. [2022-01-10 07:50:36,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3607 to 3605. [2022-01-10 07:50:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3605 states, 3467 states have (on average 1.6120565330256706) internal successors, (5589), 3473 states have internal predecessors, (5589), 74 states have call successors, (74), 60 states have call predecessors, (74), 62 states have return successors, (76), 72 states have call predecessors, (76), 74 states have call successors, (76) [2022-01-10 07:50:36,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 5739 transitions. [2022-01-10 07:50:36,928 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 5739 transitions. Word has length 90 [2022-01-10 07:50:36,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:36,928 INFO L470 AbstractCegarLoop]: Abstraction has 3605 states and 5739 transitions. [2022-01-10 07:50:36,936 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 07:50:36,937 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 5739 transitions. [2022-01-10 07:50:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-01-10 07:50:36,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:36,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:36,949 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:37,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:37,149 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:37,150 INFO L85 PathProgramCache]: Analyzing trace with hash 502002518, now seen corresponding path program 1 times [2022-01-10 07:50:37,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:37,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064000860] [2022-01-10 07:50:37,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:37,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:37,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:37,152 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:37,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 07:50:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:37,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:37,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:37,512 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:37,512 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:37,512 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064000860] [2022-01-10 07:50:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064000860] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:37,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:37,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:37,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107834634] [2022-01-10 07:50:37,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:37,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:37,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:37,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:37,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:37,514 INFO L87 Difference]: Start difference. First operand 3605 states and 5739 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:37,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:37,842 INFO L93 Difference]: Finished difference Result 6427 states and 9125 transitions. [2022-01-10 07:50:37,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:37,842 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 146 [2022-01-10 07:50:37,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:37,857 INFO L225 Difference]: With dead ends: 6427 [2022-01-10 07:50:37,858 INFO L226 Difference]: Without dead ends: 4957 [2022-01-10 07:50:37,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 144 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 07:50:37,864 INFO L933 BasicCegarLoop]: 4227 mSDtfsCounter, 4241 mSDsluCounter, 4275 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4247 SdHoareTripleChecker+Valid, 8502 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:37,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4247 Valid, 8502 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:37,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4957 states. [2022-01-10 07:50:38,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4957 to 4955. [2022-01-10 07:50:38,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4955 states, 4693 states have (on average 1.5020242914979758) internal successors, (7049), 4707 states have internal predecessors, (7049), 136 states have call successors, (136), 112 states have call predecessors, (136), 124 states have return successors, (160), 136 states have call predecessors, (160), 136 states have call successors, (160) [2022-01-10 07:50:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4955 states to 4955 states and 7345 transitions. [2022-01-10 07:50:38,088 INFO L78 Accepts]: Start accepts. Automaton has 4955 states and 7345 transitions. Word has length 146 [2022-01-10 07:50:38,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:38,089 INFO L470 AbstractCegarLoop]: Abstraction has 4955 states and 7345 transitions. [2022-01-10 07:50:38,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:38,089 INFO L276 IsEmpty]: Start isEmpty. Operand 4955 states and 7345 transitions. [2022-01-10 07:50:38,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:50:38,092 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:38,093 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:38,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:38,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:38,303 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:38,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:38,303 INFO L85 PathProgramCache]: Analyzing trace with hash 867765611, now seen corresponding path program 1 times [2022-01-10 07:50:38,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:38,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [814275560] [2022-01-10 07:50:38,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:38,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:38,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:38,305 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:38,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 07:50:38,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:38,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:38,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:38,744 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:38,744 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:38,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [814275560] [2022-01-10 07:50:38,745 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [814275560] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:38,745 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:38,745 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:38,745 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072616507] [2022-01-10 07:50:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:38,745 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:38,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:38,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:38,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:38,746 INFO L87 Difference]: Start difference. First operand 4955 states and 7345 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:39,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:39,257 INFO L93 Difference]: Finished difference Result 10253 states and 13682 transitions. [2022-01-10 07:50:39,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:39,257 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 147 [2022-01-10 07:50:39,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:39,283 INFO L225 Difference]: With dead ends: 10253 [2022-01-10 07:50:39,283 INFO L226 Difference]: Without dead ends: 7433 [2022-01-10 07:50:39,293 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 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 07:50:39,294 INFO L933 BasicCegarLoop]: 4267 mSDtfsCounter, 4231 mSDsluCounter, 4307 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4237 SdHoareTripleChecker+Valid, 8574 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:39,294 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4237 Valid, 8574 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:39,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7433 states. [2022-01-10 07:50:39,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7433 to 7431. [2022-01-10 07:50:39,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7431 states, 6934 states have (on average 1.400922988174214) internal successors, (9714), 6965 states have internal predecessors, (9714), 255 states have call successors, (255), 208 states have call predecessors, (255), 240 states have return successors, (323), 259 states have call predecessors, (323), 255 states have call successors, (323) [2022-01-10 07:50:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7431 states to 7431 states and 10292 transitions. [2022-01-10 07:50:39,644 INFO L78 Accepts]: Start accepts. Automaton has 7431 states and 10292 transitions. Word has length 147 [2022-01-10 07:50:39,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:39,645 INFO L470 AbstractCegarLoop]: Abstraction has 7431 states and 10292 transitions. [2022-01-10 07:50:39,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 7431 states and 10292 transitions. [2022-01-10 07:50:39,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 07:50:39,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:39,650 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:39,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:39,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:39,865 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:39,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:39,865 INFO L85 PathProgramCache]: Analyzing trace with hash 937413485, now seen corresponding path program 1 times [2022-01-10 07:50:39,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:39,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [401354655] [2022-01-10 07:50:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:39,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:39,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:39,867 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:39,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 07:50:39,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:39,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:39,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:40,175 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:40,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:40,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:40,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [401354655] [2022-01-10 07:50:40,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [401354655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:40,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:40,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:40,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597166689] [2022-01-10 07:50:40,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:40,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:40,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:40,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:40,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:40,177 INFO L87 Difference]: Start difference. First operand 7431 states and 10292 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:40,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:40,536 INFO L93 Difference]: Finished difference Result 12721 states and 16593 transitions. [2022-01-10 07:50:40,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:40,536 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-01-10 07:50:40,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:40,560 INFO L225 Difference]: With dead ends: 12721 [2022-01-10 07:50:40,560 INFO L226 Difference]: Without dead ends: 7425 [2022-01-10 07:50:40,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:40,572 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 229 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 8153 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:40,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 8153 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:40,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7425 states. [2022-01-10 07:50:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7425 to 7425. [2022-01-10 07:50:40,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7425 states, 6931 states have (on average 1.4006636848939547) internal successors, (9708), 6961 states have internal predecessors, (9708), 252 states have call successors, (252), 208 states have call predecessors, (252), 240 states have return successors, (320), 256 states have call predecessors, (320), 252 states have call successors, (320) [2022-01-10 07:50:40,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7425 states to 7425 states and 10280 transitions. [2022-01-10 07:50:40,873 INFO L78 Accepts]: Start accepts. Automaton has 7425 states and 10280 transitions. Word has length 147 [2022-01-10 07:50:40,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:40,873 INFO L470 AbstractCegarLoop]: Abstraction has 7425 states and 10280 transitions. [2022-01-10 07:50:40,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:40,874 INFO L276 IsEmpty]: Start isEmpty. Operand 7425 states and 10280 transitions. [2022-01-10 07:50:40,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:50:40,878 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:40,878 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:40,889 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-01-10 07:50:41,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:41,092 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:41,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:41,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1954017798, now seen corresponding path program 1 times [2022-01-10 07:50:41,093 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:41,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [509047162] [2022-01-10 07:50:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:41,094 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:41,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:41,095 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:41,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 07:50:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:41,199 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:41,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:41,478 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:41,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:41,479 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:41,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [509047162] [2022-01-10 07:50:41,479 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [509047162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:41,479 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:41,479 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:41,479 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158096431] [2022-01-10 07:50:41,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:41,480 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:41,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:41,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:41,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:41,483 INFO L87 Difference]: Start difference. First operand 7425 states and 10280 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:42,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:42,033 INFO L93 Difference]: Finished difference Result 17318 states and 22083 transitions. [2022-01-10 07:50:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 148 [2022-01-10 07:50:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:42,074 INFO L225 Difference]: With dead ends: 17318 [2022-01-10 07:50:42,074 INFO L226 Difference]: Without dead ends: 12028 [2022-01-10 07:50:42,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 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 07:50:42,092 INFO L933 BasicCegarLoop]: 4256 mSDtfsCounter, 4224 mSDsluCounter, 4284 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8540 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:42,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8540 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:42,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12028 states. [2022-01-10 07:50:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12028 to 12026. [2022-01-10 07:50:42,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12026 states, 11089 states have (on average 1.3204977906033006) internal successors, (14643), 11156 states have internal predecessors, (14643), 471 states have call successors, (471), 384 states have call predecessors, (471), 464 states have return successors, (635), 487 states have call predecessors, (635), 471 states have call successors, (635) [2022-01-10 07:50:42,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12026 states to 12026 states and 15749 transitions. [2022-01-10 07:50:42,635 INFO L78 Accepts]: Start accepts. Automaton has 12026 states and 15749 transitions. Word has length 148 [2022-01-10 07:50:42,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:42,635 INFO L470 AbstractCegarLoop]: Abstraction has 12026 states and 15749 transitions. [2022-01-10 07:50:42,635 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:42,635 INFO L276 IsEmpty]: Start isEmpty. Operand 12026 states and 15749 transitions. [2022-01-10 07:50:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 07:50:42,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:42,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:42,655 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:42,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:42,853 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:42,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:42,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1884369924, now seen corresponding path program 1 times [2022-01-10 07:50:42,854 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:42,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [168940118] [2022-01-10 07:50:42,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:42,854 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:42,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:42,855 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:42,856 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 07:50:42,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:42,954 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:42,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:43,131 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:43,131 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:43,131 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:43,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [168940118] [2022-01-10 07:50:43,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [168940118] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:43,131 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:43,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:43,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801288621] [2022-01-10 07:50:43,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:43,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:43,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:43,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:43,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:43,134 INFO L87 Difference]: Start difference. First operand 12026 states and 15749 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:43,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:43,572 INFO L93 Difference]: Finished difference Result 21912 states and 27510 transitions. [2022-01-10 07:50:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:43,572 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 148 [2022-01-10 07:50:43,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:43,612 INFO L225 Difference]: With dead ends: 21912 [2022-01-10 07:50:43,612 INFO L226 Difference]: Without dead ends: 12021 [2022-01-10 07:50:43,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:43,635 INFO L933 BasicCegarLoop]: 4194 mSDtfsCounter, 227 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 227 SdHoareTripleChecker+Valid, 8152 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:43,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [227 Valid, 8152 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:43,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12021 states. [2022-01-10 07:50:44,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12021 to 12021. [2022-01-10 07:50:44,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12021 states, 11087 states have (on average 1.3203752142148462) internal successors, (14639), 11153 states have internal predecessors, (14639), 468 states have call successors, (468), 384 states have call predecessors, (468), 464 states have return successors, (632), 484 states have call predecessors, (632), 468 states have call successors, (632) [2022-01-10 07:50:44,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12021 states to 12021 states and 15739 transitions. [2022-01-10 07:50:44,214 INFO L78 Accepts]: Start accepts. Automaton has 12021 states and 15739 transitions. Word has length 148 [2022-01-10 07:50:44,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:44,214 INFO L470 AbstractCegarLoop]: Abstraction has 12021 states and 15739 transitions. [2022-01-10 07:50:44,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:44,215 INFO L276 IsEmpty]: Start isEmpty. Operand 12021 states and 15739 transitions. [2022-01-10 07:50:44,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:50:44,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:44,221 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:44,231 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:44,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:44,431 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:44,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:44,431 INFO L85 PathProgramCache]: Analyzing trace with hash 585316039, now seen corresponding path program 1 times [2022-01-10 07:50:44,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:44,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [402388744] [2022-01-10 07:50:44,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:44,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:44,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:44,433 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:44,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 07:50:44,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:44,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 07:50:44,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:44,775 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:44,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:44,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:44,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [402388744] [2022-01-10 07:50:44,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [402388744] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:44,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:44,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:44,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981838794] [2022-01-10 07:50:44,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:44,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:44,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:44,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:44,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:44,777 INFO L87 Difference]: Start difference. First operand 12021 states and 15739 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:45,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:45,644 INFO L93 Difference]: Finished difference Result 30933 states and 38141 transitions. [2022-01-10 07:50:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 149 [2022-01-10 07:50:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:45,702 INFO L225 Difference]: With dead ends: 30933 [2022-01-10 07:50:45,703 INFO L226 Difference]: Without dead ends: 21047 [2022-01-10 07:50:45,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 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 07:50:45,728 INFO L933 BasicCegarLoop]: 4252 mSDtfsCounter, 4224 mSDsluCounter, 4262 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4230 SdHoareTripleChecker+Valid, 8514 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:45,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4230 Valid, 8514 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 07:50:45,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21047 states. [2022-01-10 07:50:46,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21047 to 20821. [2022-01-10 07:50:46,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20821 states, 18828 states have (on average 1.2615253877204164) internal successors, (23752), 19103 states have internal predecessors, (23752), 871 states have call successors, (871), 704 states have call predecessors, (871), 1120 states have return successors, (1484), 1015 states have call predecessors, (1484), 871 states have call successors, (1484) [2022-01-10 07:50:46,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20821 states to 20821 states and 26107 transitions. [2022-01-10 07:50:46,622 INFO L78 Accepts]: Start accepts. Automaton has 20821 states and 26107 transitions. Word has length 149 [2022-01-10 07:50:46,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:46,623 INFO L470 AbstractCegarLoop]: Abstraction has 20821 states and 26107 transitions. [2022-01-10 07:50:46,623 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 07:50:46,623 INFO L276 IsEmpty]: Start isEmpty. Operand 20821 states and 26107 transitions. [2022-01-10 07:50:46,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 07:50:46,633 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:46,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:46,647 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:46,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:46,843 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:46,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:46,843 INFO L85 PathProgramCache]: Analyzing trace with hash 654963913, now seen corresponding path program 1 times [2022-01-10 07:50:46,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:46,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [202917938] [2022-01-10 07:50:46,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:46,844 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:46,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:46,845 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:46,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 07:50:46,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:46,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 303 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:46,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:47,128 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 07:50:47,128 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:47,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:47,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [202917938] [2022-01-10 07:50:47,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [202917938] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:47,129 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:47,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:47,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570178131] [2022-01-10 07:50:47,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:47,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:47,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:47,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:47,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:47,130 INFO L87 Difference]: Start difference. First operand 20821 states and 26107 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:47,927 INFO L93 Difference]: Finished difference Result 39504 states and 48230 transitions. [2022-01-10 07:50:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 149 [2022-01-10 07:50:47,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:47,985 INFO L225 Difference]: With dead ends: 39504 [2022-01-10 07:50:47,985 INFO L226 Difference]: Without dead ends: 20817 [2022-01-10 07:50:48,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:48,026 INFO L933 BasicCegarLoop]: 4193 mSDtfsCounter, 225 mSDsluCounter, 3958 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 8151 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:48,027 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 8151 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20817 states. [2022-01-10 07:50:49,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20817 to 20817. [2022-01-10 07:50:49,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20817 states, 18827 states have (on average 1.2614861634886068) internal successors, (23750), 19101 states have internal predecessors, (23750), 868 states have call successors, (868), 704 states have call predecessors, (868), 1120 states have return successors, (1480), 1012 states have call predecessors, (1480), 868 states have call successors, (1480) [2022-01-10 07:50:49,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20817 states to 20817 states and 26098 transitions. [2022-01-10 07:50:49,067 INFO L78 Accepts]: Start accepts. Automaton has 20817 states and 26098 transitions. Word has length 149 [2022-01-10 07:50:49,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:49,067 INFO L470 AbstractCegarLoop]: Abstraction has 20817 states and 26098 transitions. [2022-01-10 07:50:49,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 07:50:49,068 INFO L276 IsEmpty]: Start isEmpty. Operand 20817 states and 26098 transitions. [2022-01-10 07:50:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 07:50:49,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:49,075 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:49,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 07:50:49,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:49,275 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:49,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:49,276 INFO L85 PathProgramCache]: Analyzing trace with hash 881078430, now seen corresponding path program 1 times [2022-01-10 07:50:49,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:49,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1267099007] [2022-01-10 07:50:49,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:49,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:49,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:49,277 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:49,278 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 07:50:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:49,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:49,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:49,528 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:49,528 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:49,528 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:49,528 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1267099007] [2022-01-10 07:50:49,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1267099007] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:49,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:49,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:50:49,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837247283] [2022-01-10 07:50:49,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:49,529 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:49,529 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:49,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:49,530 INFO L87 Difference]: Start difference. First operand 20817 states and 26098 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:50:50,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:50,807 INFO L93 Difference]: Finished difference Result 54027 states and 65646 transitions. [2022-01-10 07:50:50,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:50,807 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 150 [2022-01-10 07:50:50,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:50,896 INFO L225 Difference]: With dead ends: 54027 [2022-01-10 07:50:50,896 INFO L226 Difference]: Without dead ends: 28149 [2022-01-10 07:50:50,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:50,940 INFO L933 BasicCegarLoop]: 4394 mSDtfsCounter, 197 mSDsluCounter, 4185 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 8579 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:50,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 8579 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:50,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28149 states. [2022-01-10 07:50:52,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28149 to 28149. [2022-01-10 07:50:52,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28149 states, 25375 states have (on average 1.2396059113300493) internal successors, (31455), 25729 states have internal predecessors, (31455), 1236 states have call successors, (1236), 992 states have call predecessors, (1236), 1536 states have return successors, (2106), 1428 states have call predecessors, (2106), 1236 states have call successors, (2106) [2022-01-10 07:50:52,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28149 states to 28149 states and 34797 transitions. [2022-01-10 07:50:52,208 INFO L78 Accepts]: Start accepts. Automaton has 28149 states and 34797 transitions. Word has length 150 [2022-01-10 07:50:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:52,208 INFO L470 AbstractCegarLoop]: Abstraction has 28149 states and 34797 transitions. [2022-01-10 07:50:52,208 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 07:50:52,208 INFO L276 IsEmpty]: Start isEmpty. Operand 28149 states and 34797 transitions. [2022-01-10 07:50:52,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-01-10 07:50:52,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:52,222 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 07:50:52,229 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-01-10 07:50:52,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:52,423 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:52,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:52,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1101915208, now seen corresponding path program 1 times [2022-01-10 07:50:52,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:52,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [305158025] [2022-01-10 07:50:52,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:52,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:52,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:52,425 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:52,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 07:50:52,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:52,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:50:52,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:50:52,819 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:52,819 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [305158025] [2022-01-10 07:50:52,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [305158025] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:52,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:52,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 07:50:52,820 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [344786762] [2022-01-10 07:50:52,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:52,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:50:52,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:50:52,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:52,821 INFO L87 Difference]: Start difference. First operand 28149 states and 34797 transitions. Second operand has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:50:54,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:54,377 INFO L93 Difference]: Finished difference Result 61488 states and 74497 transitions. [2022-01-10 07:50:54,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:50:54,378 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 193 [2022-01-10 07:50:54,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:54,467 INFO L225 Difference]: With dead ends: 61488 [2022-01-10 07:50:54,467 INFO L226 Difference]: Without dead ends: 35473 [2022-01-10 07:50:54,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 191 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:50:54,505 INFO L933 BasicCegarLoop]: 4204 mSDtfsCounter, 4067 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4067 SdHoareTripleChecker+Valid, 4414 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:54,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4067 Valid, 4414 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:50:54,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35473 states. [2022-01-10 07:50:56,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35473 to 35377. [2022-01-10 07:50:56,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35377 states, 31883 states have (on average 1.2224382899978046) internal successors, (38975), 32277 states have internal predecessors, (38975), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1888 states have return successors, (2622), 1820 states have call predecessors, (2622), 1604 states have call successors, (2622) [2022-01-10 07:50:56,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35377 states to 35377 states and 43201 transitions. [2022-01-10 07:50:56,157 INFO L78 Accepts]: Start accepts. Automaton has 35377 states and 43201 transitions. Word has length 193 [2022-01-10 07:50:56,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:50:56,157 INFO L470 AbstractCegarLoop]: Abstraction has 35377 states and 43201 transitions. [2022-01-10 07:50:56,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 47.333333333333336) internal successors, (142), 2 states have internal predecessors, (142), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-01-10 07:50:56,158 INFO L276 IsEmpty]: Start isEmpty. Operand 35377 states and 43201 transitions. [2022-01-10 07:50:56,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2022-01-10 07:50:56,179 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:50:56,179 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:50:56,187 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 07:50:56,380 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:50:56,380 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:50:56,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:50:56,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1408212969, now seen corresponding path program 1 times [2022-01-10 07:50:56,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:50:56,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1172259076] [2022-01-10 07:50:56,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:50:56,381 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:50:56,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:50:56,382 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:50:56,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 07:50:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:50:56,488 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 07:50:56,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:50:56,766 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 83 proven. 0 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-01-10 07:50:56,766 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:50:56,766 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:50:56,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1172259076] [2022-01-10 07:50:56,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1172259076] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:50:56,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:50:56,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 07:50:56,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335254131] [2022-01-10 07:50:56,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:50:56,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 07:50:56,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:50:56,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 07:50:56,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 07:50:56,768 INFO L87 Difference]: Start difference. First operand 35377 states and 43201 transitions. Second operand has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:50:58,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:50:58,319 INFO L93 Difference]: Finished difference Result 68981 states and 83002 transitions. [2022-01-10 07:50:58,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 07:50:58,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 215 [2022-01-10 07:50:58,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:50:58,393 INFO L225 Difference]: With dead ends: 68981 [2022-01-10 07:50:58,393 INFO L226 Difference]: Without dead ends: 35739 [2022-01-10 07:50:58,436 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 213 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 07:50:58,437 INFO L933 BasicCegarLoop]: 4195 mSDtfsCounter, 4242 mSDsluCounter, 4254 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4248 SdHoareTripleChecker+Valid, 8449 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 07:50:58,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4248 Valid, 8449 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 07:50:58,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35739 states. [2022-01-10 07:51:00,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35739 to 35739. [2022-01-10 07:51:00,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.215378884301369) internal successors, (39151), 32623 states have internal predecessors, (39151), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:51:00,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 43155 transitions. [2022-01-10 07:51:00,261 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 43155 transitions. Word has length 215 [2022-01-10 07:51:00,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:00,261 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 43155 transitions. [2022-01-10 07:51:00,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 36.0) internal successors, (144), 4 states have internal predecessors, (144), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-01-10 07:51:00,262 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 43155 transitions. [2022-01-10 07:51:00,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-01-10 07:51:00,283 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:00,283 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 07:51:00,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:00,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:00,484 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:00,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:00,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1097036936, now seen corresponding path program 1 times [2022-01-10 07:51:00,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:00,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685447394] [2022-01-10 07:51:00,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:00,485 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:00,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:00,486 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:00,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 07:51:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:00,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:00,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:00,873 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 117 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-01-10 07:51:00,874 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:00,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:00,874 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685447394] [2022-01-10 07:51:00,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685447394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:00,874 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:00,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:51:00,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613641621] [2022-01-10 07:51:00,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:00,874 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:00,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:00,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:00,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:00,875 INFO L87 Difference]: Start difference. First operand 35739 states and 43155 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:51:02,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:02,417 INFO L93 Difference]: Finished difference Result 62209 states and 75320 transitions. [2022-01-10 07:51:02,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:02,418 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 216 [2022-01-10 07:51:02,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:02,499 INFO L225 Difference]: With dead ends: 62209 [2022-01-10 07:51:02,499 INFO L226 Difference]: Without dead ends: 35803 [2022-01-10 07:51:02,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 215 GetRequests, 214 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:02,538 INFO L933 BasicCegarLoop]: 4383 mSDtfsCounter, 146 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 8551 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 07:51:02,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 8551 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 07:51:02,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35803 states. [2022-01-10 07:51:04,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35803 to 35739. [2022-01-10 07:51:04,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35739 states, 32213 states have (on average 1.1984912923353925) internal successors, (38607), 32623 states have internal predecessors, (38607), 1604 states have call successors, (1604), 1280 states have call predecessors, (1604), 1920 states have return successors, (2400), 1836 states have call predecessors, (2400), 1604 states have call successors, (2400) [2022-01-10 07:51:04,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35739 states to 35739 states and 42611 transitions. [2022-01-10 07:51:04,252 INFO L78 Accepts]: Start accepts. Automaton has 35739 states and 42611 transitions. Word has length 216 [2022-01-10 07:51:04,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 07:51:04,252 INFO L470 AbstractCegarLoop]: Abstraction has 35739 states and 42611 transitions. [2022-01-10 07:51:04,252 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:51:04,252 INFO L276 IsEmpty]: Start isEmpty. Operand 35739 states and 42611 transitions. [2022-01-10 07:51:04,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2022-01-10 07:51:04,270 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 07:51:04,270 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-01-10 07:51:04,277 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 07:51:04,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 07:51:04,471 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 07:51:04,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 07:51:04,471 INFO L85 PathProgramCache]: Analyzing trace with hash 181079622, now seen corresponding path program 1 times [2022-01-10 07:51:04,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 07:51:04,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [866560926] [2022-01-10 07:51:04,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 07:51:04,472 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 07:51:04,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 07:51:04,473 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 07:51:04,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 07:51:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 07:51:04,587 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 07:51:04,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 07:51:04,831 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 07:51:04,832 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 07:51:04,832 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 07:51:04,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [866560926] [2022-01-10 07:51:04,832 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [866560926] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 07:51:04,832 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 07:51:04,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 07:51:04,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545534967] [2022-01-10 07:51:04,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 07:51:04,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 07:51:04,833 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 07:51:04,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 07:51:04,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 07:51:04,833 INFO L87 Difference]: Start difference. First operand 35739 states and 42611 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-01-10 07:51:06,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 07:51:06,422 INFO L93 Difference]: Finished difference Result 62147 states and 72961 transitions. [2022-01-10 07:51:06,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 07:51:06,423 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 217 [2022-01-10 07:51:06,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 07:51:06,490 INFO L225 Difference]: With dead ends: 62147 [2022-01-10 07:51:06,490 INFO L226 Difference]: Without dead ends: 35741