/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/pc_sfifo_2.cil-1+token_ring.11.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:21:47,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:21:47,389 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:21:47,448 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:21:47,449 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:21:47,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:21:47,451 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:21:47,452 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:21:47,453 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:21:47,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:21:47,456 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:21:47,457 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:21:47,458 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:21:47,458 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:21:47,459 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:21:47,460 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:21:47,461 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:21:47,462 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:21:47,463 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:21:47,465 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:21:47,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:21:47,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:21:47,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:21:47,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:21:47,474 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:21:47,474 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:21:47,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:21:47,475 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:21:47,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:21:47,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 08:21:47,481 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:21:47,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:21:47,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:21:47,483 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 08:21:47,505 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:21:47,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:21:47,505 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:21:47,505 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:21:47,506 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:21:47,506 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:21:47,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:21:47,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:21:47,506 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:21:47,507 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:21:47,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:21:47,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:21:47,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:21:47,507 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:21:47,507 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:21:47,508 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:21:47,508 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:47,509 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:21:47,509 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:21:47,510 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:21:47,510 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:21:47,510 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:21:47,510 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:21:47,694 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:21:47,714 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:21:47,716 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:21:47,717 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:21:47,723 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:21:47,724 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-01-10 08:21:47,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0afd601/6ee61de663e74745817859d69135ca33/FLAG93683dd66 [2022-01-10 08:21:48,174 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:21:48,175 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-01-10 08:21:48,192 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0afd601/6ee61de663e74745817859d69135ca33/FLAG93683dd66 [2022-01-10 08:21:48,202 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a0afd601/6ee61de663e74745817859d69135ca33 [2022-01-10 08:21:48,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:21:48,205 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:21:48,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:48,206 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:21:48,212 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:21:48,213 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74b8e903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48, skipping insertion in model container [2022-01-10 08:21:48,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,218 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:21:48,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:21:48,424 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/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2022-01-10 08:21:48,462 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/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2022-01-10 08:21:48,534 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:48,554 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:21:48,563 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/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[914,927] [2022-01-10 08:21:48,588 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/pc_sfifo_2.cil-1+token_ring.11.cil-2.c[7115,7128] [2022-01-10 08:21:48,641 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:48,661 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:21:48,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48 WrapperNode [2022-01-10 08:21:48,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:48,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:48,663 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:21:48,663 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:21:48,668 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,688 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,746 INFO L137 Inliner]: procedures = 76, calls = 90, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 945 [2022-01-10 08:21:48,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:48,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:21:48,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:21:48,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:21:48,753 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,760 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,760 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,790 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:21:48,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:21:48,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:21:48,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:21:48,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (1/1) ... [2022-01-10 08:21:48,838 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:48,848 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:21:48,857 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 08:21:48,867 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 08:21:48,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:21:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:21:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:21:48,891 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:21:48,891 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:21:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:21:48,892 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:21:48,892 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:21:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:21:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:21:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:21:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:21:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:21:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:21:48,893 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:21:48,893 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:21:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:21:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:21:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:21:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:21:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:21:48,894 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:21:48,894 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:21:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:21:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:21:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:21:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:21:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:21:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:21:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:21:48,895 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:21:48,895 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:21:49,036 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:21:49,037 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:21:49,740 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:21:49,749 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:21:49,749 INFO L299 CfgBuilder]: Removed 18 assume(true) statements. [2022-01-10 08:21:49,751 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:49 BoogieIcfgContainer [2022-01-10 08:21:49,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:21:49,753 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:21:49,753 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:21:49,756 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:21:49,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:21:48" (1/3) ... [2022-01-10 08:21:49,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c712f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:49, skipping insertion in model container [2022-01-10 08:21:49,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:48" (2/3) ... [2022-01-10 08:21:49,757 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48c712f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:49, skipping insertion in model container [2022-01-10 08:21:49,757 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:49" (3/3) ... [2022-01-10 08:21:49,758 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.11.cil-2.c [2022-01-10 08:21:49,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:21:49,762 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:21:49,801 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:21:49,806 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 08:21:49,807 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:21:49,828 INFO L276 IsEmpty]: Start isEmpty. Operand has 458 states, 402 states have (on average 1.63681592039801) internal successors, (658), 408 states have internal predecessors, (658), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) [2022-01-10 08:21:49,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:49,836 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:49,837 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] [2022-01-10 08:21:49,837 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:49,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash -978370307, now seen corresponding path program 1 times [2022-01-10 08:21:49,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:49,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1643256870] [2022-01-10 08:21:49,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:49,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:49,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:49,859 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 08:21:49,870 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 08:21:50,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:50,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:21:50,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:50,243 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 08:21:50,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:50,244 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:50,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1643256870] [2022-01-10 08:21:50,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1643256870] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:50,245 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:50,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:50,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289317879] [2022-01-10 08:21:50,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:50,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:50,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:50,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:50,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:50,276 INFO L87 Difference]: Start difference. First operand has 458 states, 402 states have (on average 1.63681592039801) internal successors, (658), 408 states have internal predecessors, (658), 39 states have call successors, (39), 14 states have call predecessors, (39), 14 states have return successors, (39), 38 states have call predecessors, (39), 39 states have call successors, (39) Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:51,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:51,215 INFO L93 Difference]: Finished difference Result 992 states and 1586 transitions. [2022-01-10 08:21:51,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:51,221 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:21:51,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:51,241 INFO L225 Difference]: With dead ends: 992 [2022-01-10 08:21:51,241 INFO L226 Difference]: Without dead ends: 551 [2022-01-10 08:21:51,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 08:21:51,262 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 457 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 464 SdHoareTripleChecker+Valid, 1747 SdHoareTripleChecker+Invalid, 825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:51,263 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [464 Valid, 1747 Invalid, 825 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 763 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 08:21:51,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 551 states. [2022-01-10 08:21:51,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 551 to 544. [2022-01-10 08:21:51,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 470 states have (on average 1.5212765957446808) internal successors, (715), 476 states have internal predecessors, (715), 50 states have call successors, (50), 21 states have call predecessors, (50), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-01-10 08:21:51,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 818 transitions. [2022-01-10 08:21:51,354 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 818 transitions. Word has length 65 [2022-01-10 08:21:51,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:51,354 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 818 transitions. [2022-01-10 08:21:51,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:51,355 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 818 transitions. [2022-01-10 08:21:51,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:51,358 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:51,358 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] [2022-01-10 08:21:51,379 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 08:21:51,572 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 08:21:51,573 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:51,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:51,574 INFO L85 PathProgramCache]: Analyzing trace with hash 700518333, now seen corresponding path program 1 times [2022-01-10 08:21:51,574 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:51,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [451711894] [2022-01-10 08:21:51,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:51,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:51,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:51,576 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 08:21:51,578 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 08:21:51,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:51,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:21:51,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:51,846 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 08:21:51,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:51,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:51,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [451711894] [2022-01-10 08:21:51,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [451711894] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:51,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:51,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:51,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545507853] [2022-01-10 08:21:51,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:51,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:51,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:51,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:51,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:51,850 INFO L87 Difference]: Start difference. First operand 544 states and 818 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:52,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:52,635 INFO L93 Difference]: Finished difference Result 936 states and 1372 transitions. [2022-01-10 08:21:52,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:52,636 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:21:52,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:52,641 INFO L225 Difference]: With dead ends: 936 [2022-01-10 08:21:52,641 INFO L226 Difference]: Without dead ends: 757 [2022-01-10 08:21:52,642 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 61 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 08:21:52,643 INFO L933 BasicCegarLoop]: 700 mSDtfsCounter, 444 mSDsluCounter, 1042 mSDsCounter, 0 mSdLazyCounter, 765 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 765 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:52,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1742 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 765 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 08:21:52,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-01-10 08:21:52,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 749. [2022-01-10 08:21:52,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 631 states have (on average 1.4754358161648178) internal successors, (931), 645 states have internal predecessors, (931), 72 states have call successors, (72), 35 states have call predecessors, (72), 44 states have return successors, (95), 73 states have call predecessors, (95), 70 states have call successors, (95) [2022-01-10 08:21:52,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1098 transitions. [2022-01-10 08:21:52,686 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1098 transitions. Word has length 65 [2022-01-10 08:21:52,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:52,686 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1098 transitions. [2022-01-10 08:21:52,686 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:52,686 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1098 transitions. [2022-01-10 08:21:52,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:52,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:52,690 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] [2022-01-10 08:21:52,705 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 08:21:52,899 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 08:21:52,900 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:52,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:52,900 INFO L85 PathProgramCache]: Analyzing trace with hash -276618688, now seen corresponding path program 1 times [2022-01-10 08:21:52,901 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:52,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667788348] [2022-01-10 08:21:52,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:52,901 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:52,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:52,902 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 08:21:52,903 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 08:21:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:52,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:53,000 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:53,129 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 08:21:53,130 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:53,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667788348] [2022-01-10 08:21:53,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667788348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:53,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:53,131 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:53,131 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440572713] [2022-01-10 08:21:53,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:53,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:53,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:53,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:53,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:53,133 INFO L87 Difference]: Start difference. First operand 749 states and 1098 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:53,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:53,182 INFO L93 Difference]: Finished difference Result 1139 states and 1630 transitions. [2022-01-10 08:21:53,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:53,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:21:53,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:53,187 INFO L225 Difference]: With dead ends: 1139 [2022-01-10 08:21:53,187 INFO L226 Difference]: Without dead ends: 769 [2022-01-10 08:21:53,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:21:53,189 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 7 mSDsluCounter, 2730 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3414 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:53,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3414 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:53,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2022-01-10 08:21:53,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 759. [2022-01-10 08:21:53,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 639 states have (on average 1.4663536776212833) internal successors, (937), 653 states have internal predecessors, (937), 72 states have call successors, (72), 35 states have call predecessors, (72), 46 states have return successors, (97), 75 states have call predecessors, (97), 70 states have call successors, (97) [2022-01-10 08:21:53,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1106 transitions. [2022-01-10 08:21:53,220 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1106 transitions. Word has length 65 [2022-01-10 08:21:53,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:53,220 INFO L470 AbstractCegarLoop]: Abstraction has 759 states and 1106 transitions. [2022-01-10 08:21:53,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:53,221 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1106 transitions. [2022-01-10 08:21:53,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:53,223 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:53,223 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] [2022-01-10 08:21:53,235 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 08:21:53,436 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 08:21:53,436 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:53,437 INFO L85 PathProgramCache]: Analyzing trace with hash -1305977986, now seen corresponding path program 1 times [2022-01-10 08:21:53,437 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:53,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1614358298] [2022-01-10 08:21:53,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:53,438 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:53,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:53,439 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 08:21:53,440 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 08:21:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:53,535 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:53,687 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 08:21:53,688 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:53,688 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:53,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1614358298] [2022-01-10 08:21:53,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1614358298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:53,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:53,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:53,689 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008689028] [2022-01-10 08:21:53,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:53,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:53,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:53,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:53,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:53,690 INFO L87 Difference]: Start difference. First operand 759 states and 1106 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:53,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:53,737 INFO L93 Difference]: Finished difference Result 1153 states and 1636 transitions. [2022-01-10 08:21:53,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:53,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:21:53,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:53,742 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 08:21:53,742 INFO L226 Difference]: Without dead ends: 773 [2022-01-10 08:21:53,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:21:53,744 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 4 mSDsluCounter, 2727 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3410 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:53,744 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3410 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:53,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 773 states. [2022-01-10 08:21:53,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 773 to 769. [2022-01-10 08:21:53,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 647 states have (on average 1.4574961360123648) internal successors, (943), 661 states have internal predecessors, (943), 72 states have call successors, (72), 35 states have call predecessors, (72), 48 states have return successors, (99), 77 states have call predecessors, (99), 70 states have call successors, (99) [2022-01-10 08:21:53,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1114 transitions. [2022-01-10 08:21:53,774 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1114 transitions. Word has length 65 [2022-01-10 08:21:53,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:53,774 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 1114 transitions. [2022-01-10 08:21:53,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:21:53,774 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1114 transitions. [2022-01-10 08:21:53,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:53,776 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:53,776 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] [2022-01-10 08:21:53,787 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 08:21:53,985 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 08:21:53,985 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:53,986 INFO L85 PathProgramCache]: Analyzing trace with hash 80225408, now seen corresponding path program 1 times [2022-01-10 08:21:53,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:53,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1918675038] [2022-01-10 08:21:53,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:53,987 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:53,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:53,988 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 08:21:53,989 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 08:21:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:54,074 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:54,208 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 08:21:54,208 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:54,208 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:54,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1918675038] [2022-01-10 08:21:54,208 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1918675038] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:54,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:54,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:54,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457643499] [2022-01-10 08:21:54,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:54,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:54,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:54,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:54,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:54,210 INFO L87 Difference]: Start difference. First operand 769 states and 1114 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 08:21:54,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:54,537 INFO L93 Difference]: Finished difference Result 1541 states and 2135 transitions. [2022-01-10 08:21:54,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:54,538 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 08:21:54,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:54,543 INFO L225 Difference]: With dead ends: 1541 [2022-01-10 08:21:54,543 INFO L226 Difference]: Without dead ends: 1155 [2022-01-10 08:21:54,544 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 63 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 08:21:54,545 INFO L933 BasicCegarLoop]: 664 mSDtfsCounter, 947 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:54,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [977 Valid, 1036 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-01-10 08:21:54,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1151. [2022-01-10 08:21:54,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1151 states, 939 states have (on average 1.4004259850905219) internal successors, (1315), 968 states have internal predecessors, (1315), 118 states have call successors, (118), 63 states have call predecessors, (118), 92 states have return successors, (184), 128 states have call predecessors, (184), 116 states have call successors, (184) [2022-01-10 08:21:54,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1151 states to 1151 states and 1617 transitions. [2022-01-10 08:21:54,587 INFO L78 Accepts]: Start accepts. Automaton has 1151 states and 1617 transitions. Word has length 65 [2022-01-10 08:21:54,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:54,588 INFO L470 AbstractCegarLoop]: Abstraction has 1151 states and 1617 transitions. [2022-01-10 08:21:54,588 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 08:21:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1151 states and 1617 transitions. [2022-01-10 08:21:54,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:54,590 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:54,590 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] [2022-01-10 08:21:54,602 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 08:21:54,800 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 08:21:54,800 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:54,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -1125374181, now seen corresponding path program 1 times [2022-01-10 08:21:54,801 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:54,801 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [859364162] [2022-01-10 08:21:54,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:54,801 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:54,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:54,802 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 08:21:54,803 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 08:21:54,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:54,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:54,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:55,031 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 08:21:55,032 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:55,032 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:55,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [859364162] [2022-01-10 08:21:55,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [859364162] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:55,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:55,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:55,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862346189] [2022-01-10 08:21:55,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:55,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:55,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:55,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:55,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:55,034 INFO L87 Difference]: Start difference. First operand 1151 states and 1617 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:55,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:55,115 INFO L93 Difference]: Finished difference Result 2567 states and 3464 transitions. [2022-01-10 08:21:55,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:55,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2022-01-10 08:21:55,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:55,125 INFO L225 Difference]: With dead ends: 2567 [2022-01-10 08:21:55,125 INFO L226 Difference]: Without dead ends: 1783 [2022-01-10 08:21:55,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:21:55,131 INFO L933 BasicCegarLoop]: 695 mSDtfsCounter, 66 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1346 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:55,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1346 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:55,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1783 states. [2022-01-10 08:21:55,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1783 to 1755. [2022-01-10 08:21:55,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1413 states have (on average 1.354564755838641) internal successors, (1914), 1451 states have internal predecessors, (1914), 172 states have call successors, (172), 119 states have call predecessors, (172), 168 states have return successors, (264), 189 states have call predecessors, (264), 170 states have call successors, (264) [2022-01-10 08:21:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2350 transitions. [2022-01-10 08:21:55,204 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2350 transitions. Word has length 66 [2022-01-10 08:21:55,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:55,205 INFO L470 AbstractCegarLoop]: Abstraction has 1755 states and 2350 transitions. [2022-01-10 08:21:55,205 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:55,205 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2350 transitions. [2022-01-10 08:21:55,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:55,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:55,206 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] [2022-01-10 08:21:55,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:55,415 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 08:21:55,416 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:55,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:55,416 INFO L85 PathProgramCache]: Analyzing trace with hash 332865478, now seen corresponding path program 1 times [2022-01-10 08:21:55,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:55,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1038913245] [2022-01-10 08:21:55,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:55,417 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:55,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:55,418 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 08:21:55,419 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 08:21:55,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:55,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:55,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:55,634 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 08:21:55,635 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:55,635 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:55,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1038913245] [2022-01-10 08:21:55,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1038913245] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:55,635 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:55,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:55,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103271470] [2022-01-10 08:21:55,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:55,636 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:55,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:55,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:55,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:55,637 INFO L87 Difference]: Start difference. First operand 1755 states and 2350 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:55,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:55,720 INFO L93 Difference]: Finished difference Result 4419 states and 5777 transitions. [2022-01-10 08:21:55,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:55,721 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 66 [2022-01-10 08:21:55,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:55,734 INFO L225 Difference]: With dead ends: 4419 [2022-01-10 08:21:55,734 INFO L226 Difference]: Without dead ends: 3039 [2022-01-10 08:21:55,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 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 08:21:55,739 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 618 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:55,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 804 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:55,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3039 states. [2022-01-10 08:21:55,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3039 to 2979. [2022-01-10 08:21:55,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2979 states, 2351 states have (on average 1.3066780093577202) internal successors, (3072), 2423 states have internal predecessors, (3072), 304 states have call successors, (304), 231 states have call predecessors, (304), 322 states have return successors, (476), 329 states have call predecessors, (476), 302 states have call successors, (476) [2022-01-10 08:21:55,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2979 states to 2979 states and 3852 transitions. [2022-01-10 08:21:55,874 INFO L78 Accepts]: Start accepts. Automaton has 2979 states and 3852 transitions. Word has length 66 [2022-01-10 08:21:55,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:55,874 INFO L470 AbstractCegarLoop]: Abstraction has 2979 states and 3852 transitions. [2022-01-10 08:21:55,874 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:55,874 INFO L276 IsEmpty]: Start isEmpty. Operand 2979 states and 3852 transitions. [2022-01-10 08:21:55,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 08:21:55,876 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:55,876 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] [2022-01-10 08:21:55,887 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 08:21:56,084 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 08:21:56,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:56,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:56,085 INFO L85 PathProgramCache]: Analyzing trace with hash 242787514, now seen corresponding path program 1 times [2022-01-10 08:21:56,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:56,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1025475743] [2022-01-10 08:21:56,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:56,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:56,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:56,095 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 08:21:56,098 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 08:21:56,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:56,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:56,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:56,293 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 08:21:56,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:56,294 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:56,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1025475743] [2022-01-10 08:21:56,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1025475743] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:56,294 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:56,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:56,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417579593] [2022-01-10 08:21:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:56,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:56,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:56,296 INFO L87 Difference]: Start difference. First operand 2979 states and 3852 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:56,393 INFO L93 Difference]: Finished difference Result 6191 states and 7866 transitions. [2022-01-10 08:21:56,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 72 [2022-01-10 08:21:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:56,412 INFO L225 Difference]: With dead ends: 6191 [2022-01-10 08:21:56,413 INFO L226 Difference]: Without dead ends: 3587 [2022-01-10 08:21:56,419 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 70 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 08:21:56,420 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 614 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 614 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:56,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [614 Valid, 814 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3587 states. [2022-01-10 08:21:56,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3587 to 3543. [2022-01-10 08:21:56,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3543 states, 2787 states have (on average 1.2888410477215644) internal successors, (3592), 2867 states have internal predecessors, (3592), 368 states have call successors, (368), 287 states have call predecessors, (368), 386 states have return successors, (559), 393 states have call predecessors, (559), 366 states have call successors, (559) [2022-01-10 08:21:56,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3543 states to 3543 states and 4519 transitions. [2022-01-10 08:21:56,537 INFO L78 Accepts]: Start accepts. Automaton has 3543 states and 4519 transitions. Word has length 72 [2022-01-10 08:21:56,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:56,537 INFO L470 AbstractCegarLoop]: Abstraction has 3543 states and 4519 transitions. [2022-01-10 08:21:56,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:56,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3543 states and 4519 transitions. [2022-01-10 08:21:56,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 08:21:56,542 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:56,542 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:21:56,558 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 08:21:56,751 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 08:21:56,752 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:56,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:56,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1580378082, now seen corresponding path program 1 times [2022-01-10 08:21:56,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:56,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1642331113] [2022-01-10 08:21:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:56,753 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:56,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:56,754 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 08:21:56,756 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 08:21:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:56,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:56,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:56,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:56,959 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:56,959 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:56,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1642331113] [2022-01-10 08:21:56,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1642331113] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:56,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:56,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:56,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846618243] [2022-01-10 08:21:56,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:56,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:56,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:56,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:56,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:56,962 INFO L87 Difference]: Start difference. First operand 3543 states and 4519 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:57,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:57,248 INFO L93 Difference]: Finished difference Result 4223 states and 5352 transitions. [2022-01-10 08:21:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:57,249 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-01-10 08:21:57,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:57,271 INFO L225 Difference]: With dead ends: 4223 [2022-01-10 08:21:57,271 INFO L226 Difference]: Without dead ends: 4220 [2022-01-10 08:21:57,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 71 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 08:21:57,276 INFO L933 BasicCegarLoop]: 707 mSDtfsCounter, 1279 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1279 SdHoareTripleChecker+Valid, 797 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:57,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1279 Valid, 797 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:21:57,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4220 states. [2022-01-10 08:21:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4220 to 4178. [2022-01-10 08:21:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4178 states, 3277 states have (on average 1.279523954836741) internal successors, (4193), 3371 states have internal predecessors, (4193), 433 states have call successors, (433), 343 states have call predecessors, (433), 466 states have return successors, (662), 468 states have call predecessors, (662), 432 states have call successors, (662) [2022-01-10 08:21:57,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4178 states to 4178 states and 5288 transitions. [2022-01-10 08:21:57,440 INFO L78 Accepts]: Start accepts. Automaton has 4178 states and 5288 transitions. Word has length 73 [2022-01-10 08:21:57,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:57,441 INFO L470 AbstractCegarLoop]: Abstraction has 4178 states and 5288 transitions. [2022-01-10 08:21:57,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:57,442 INFO L276 IsEmpty]: Start isEmpty. Operand 4178 states and 5288 transitions. [2022-01-10 08:21:57,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 08:21:57,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:57,446 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:57,455 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 08:21:57,655 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 08:21:57,655 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:57,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1748440700, now seen corresponding path program 1 times [2022-01-10 08:21:57,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:57,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2081002164] [2022-01-10 08:21:57,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:57,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:57,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:57,657 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 08:21:57,659 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 08:21:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:57,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:57,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:58,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:58,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:21:58,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:58,303 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:58,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2081002164] [2022-01-10 08:21:58,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2081002164] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:21:58,303 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:21:58,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-01-10 08:21:58,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59464316] [2022-01-10 08:21:58,303 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:21:58,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:21:58,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:58,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:21:58,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:21:58,305 INFO L87 Difference]: Start difference. First operand 4178 states and 5288 transitions. Second operand has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 08:21:58,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:58,890 INFO L93 Difference]: Finished difference Result 9161 states and 11488 transitions. [2022-01-10 08:21:58,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:21:58,891 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 74 [2022-01-10 08:21:58,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:58,937 INFO L225 Difference]: With dead ends: 9161 [2022-01-10 08:21:58,938 INFO L226 Difference]: Without dead ends: 9158 [2022-01-10 08:21:58,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 140 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:21:58,945 INFO L933 BasicCegarLoop]: 900 mSDtfsCounter, 1100 mSDsluCounter, 1786 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1100 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:58,945 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1100 Valid, 2686 Invalid, 362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:58,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9158 states. [2022-01-10 08:21:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9158 to 6760. [2022-01-10 08:21:59,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6760 states, 5279 states have (on average 1.2693691987118771) internal successors, (6701), 5439 states have internal predecessors, (6701), 697 states have call successors, (697), 567 states have call predecessors, (697), 782 states have return successors, (1096), 758 states have call predecessors, (1096), 696 states have call successors, (1096) [2022-01-10 08:21:59,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6760 states to 6760 states and 8494 transitions. [2022-01-10 08:21:59,282 INFO L78 Accepts]: Start accepts. Automaton has 6760 states and 8494 transitions. Word has length 74 [2022-01-10 08:21:59,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:59,282 INFO L470 AbstractCegarLoop]: Abstraction has 6760 states and 8494 transitions. [2022-01-10 08:21:59,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.428571428571427) internal successors, (115), 7 states have internal predecessors, (115), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 08:21:59,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6760 states and 8494 transitions. [2022-01-10 08:21:59,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 08:21:59,284 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:59,284 INFO L514 BasicCegarLoop]: trace histogram [3, 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 08:21:59,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:59,495 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 08:21:59,496 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:59,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:59,496 INFO L85 PathProgramCache]: Analyzing trace with hash 17284126, now seen corresponding path program 2 times [2022-01-10 08:21:59,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:59,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1599029170] [2022-01-10 08:21:59,496 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:21:59,496 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:59,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:59,497 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 08:21:59,498 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 08:21:59,580 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:21:59,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:21:59,583 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:59,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:59,686 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:59,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:59,687 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:59,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1599029170] [2022-01-10 08:21:59,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1599029170] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:59,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:59,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:59,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676928340] [2022-01-10 08:21:59,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:59,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:59,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:59,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:59,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:59,689 INFO L87 Difference]: Start difference. First operand 6760 states and 8494 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:21:59,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:59,846 INFO L93 Difference]: Finished difference Result 10007 states and 12626 transitions. [2022-01-10 08:21:59,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:59,847 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-01-10 08:21:59,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:59,868 INFO L225 Difference]: With dead ends: 10007 [2022-01-10 08:21:59,868 INFO L226 Difference]: Without dead ends: 4196 [2022-01-10 08:21:59,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 75 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 08:21:59,883 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 654 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:59,883 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [654 Valid, 877 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:59,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4196 states. [2022-01-10 08:22:00,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4196 to 4164. [2022-01-10 08:22:00,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4164 states, 3267 states have (on average 1.2656871747780838) internal successors, (4135), 3357 states have internal predecessors, (4135), 433 states have call successors, (433), 343 states have call predecessors, (433), 462 states have return successors, (630), 468 states have call predecessors, (630), 432 states have call successors, (630) [2022-01-10 08:22:00,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4164 states to 4164 states and 5198 transitions. [2022-01-10 08:22:00,093 INFO L78 Accepts]: Start accepts. Automaton has 4164 states and 5198 transitions. Word has length 77 [2022-01-10 08:22:00,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:00,094 INFO L470 AbstractCegarLoop]: Abstraction has 4164 states and 5198 transitions. [2022-01-10 08:22:00,094 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:22:00,094 INFO L276 IsEmpty]: Start isEmpty. Operand 4164 states and 5198 transitions. [2022-01-10 08:22:00,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 08:22:00,096 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:00,096 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:00,111 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 08:22:00,305 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 08:22:00,306 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:00,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:00,306 INFO L85 PathProgramCache]: Analyzing trace with hash 621442966, now seen corresponding path program 1 times [2022-01-10 08:22:00,307 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:00,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [748130511] [2022-01-10 08:22:00,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:00,307 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:00,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:00,308 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 08:22:00,310 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 08:22:00,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:00,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:00,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:00,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:00,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:00,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [748130511] [2022-01-10 08:22:00,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [748130511] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:00,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:00,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:00,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1582661211] [2022-01-10 08:22:00,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:00,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:00,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:00,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:00,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:00,501 INFO L87 Difference]: Start difference. First operand 4164 states and 5198 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:00,730 INFO L93 Difference]: Finished difference Result 11187 states and 13743 transitions. [2022-01-10 08:22:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:00,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-01-10 08:22:00,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:00,760 INFO L225 Difference]: With dead ends: 11187 [2022-01-10 08:22:00,760 INFO L226 Difference]: Without dead ends: 5964 [2022-01-10 08:22:00,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 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 08:22:00,774 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 89 mSDsluCounter, 674 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1447 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 08:22:00,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1447 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:00,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5964 states. [2022-01-10 08:22:01,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5964 to 5964. [2022-01-10 08:22:01,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5964 states, 4629 states have (on average 1.2434651112551307) internal successors, (5756), 4764 states have internal predecessors, (5756), 631 states have call successors, (631), 511 states have call predecessors, (631), 702 states have return successors, (954), 693 states have call predecessors, (954), 630 states have call successors, (954) [2022-01-10 08:22:01,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5964 states to 5964 states and 7341 transitions. [2022-01-10 08:22:01,086 INFO L78 Accepts]: Start accepts. Automaton has 5964 states and 7341 transitions. Word has length 84 [2022-01-10 08:22:01,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:01,087 INFO L470 AbstractCegarLoop]: Abstraction has 5964 states and 7341 transitions. [2022-01-10 08:22:01,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:01,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5964 states and 7341 transitions. [2022-01-10 08:22:01,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 08:22:01,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:01,091 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:01,103 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 08:22:01,303 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 08:22:01,303 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1377526234, now seen corresponding path program 1 times [2022-01-10 08:22:01,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:01,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [33403680] [2022-01-10 08:22:01,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:01,304 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:01,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:01,305 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 08:22:01,306 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 08:22:01,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:01,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 250 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:01,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:01,548 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:22:01,549 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:01,549 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:01,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [33403680] [2022-01-10 08:22:01,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [33403680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:01,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:01,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:01,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355744965] [2022-01-10 08:22:01,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:01,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:22:01,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:01,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:22:01,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:22:01,550 INFO L87 Difference]: Start difference. First operand 5964 states and 7341 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:02,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:02,027 INFO L93 Difference]: Finished difference Result 11579 states and 14141 transitions. [2022-01-10 08:22:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:02,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 92 [2022-01-10 08:22:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:02,044 INFO L225 Difference]: With dead ends: 11579 [2022-01-10 08:22:02,045 INFO L226 Difference]: Without dead ends: 5994 [2022-01-10 08:22:02,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 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 08:22:02,055 INFO L933 BasicCegarLoop]: 658 mSDtfsCounter, 927 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:02,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 1017 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:02,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2022-01-10 08:22:02,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5994. [2022-01-10 08:22:02,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5994 states, 4644 states have (on average 1.2284668389319553) internal successors, (5705), 4794 states have internal predecessors, (5705), 631 states have call successors, (631), 511 states have call predecessors, (631), 717 states have return successors, (954), 693 states have call predecessors, (954), 630 states have call successors, (954) [2022-01-10 08:22:02,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5994 states to 5994 states and 7290 transitions. [2022-01-10 08:22:02,295 INFO L78 Accepts]: Start accepts. Automaton has 5994 states and 7290 transitions. Word has length 92 [2022-01-10 08:22:02,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:02,295 INFO L470 AbstractCegarLoop]: Abstraction has 5994 states and 7290 transitions. [2022-01-10 08:22:02,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:02,295 INFO L276 IsEmpty]: Start isEmpty. Operand 5994 states and 7290 transitions. [2022-01-10 08:22:02,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:22:02,298 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:02,298 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:02,310 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2022-01-10 08:22:02,507 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 08:22:02,508 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:02,508 INFO L85 PathProgramCache]: Analyzing trace with hash 770149948, now seen corresponding path program 1 times [2022-01-10 08:22:02,509 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:02,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281067504] [2022-01-10 08:22:02,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:02,509 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:02,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:02,510 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 08:22:02,512 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 08:22:02,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:02,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:02,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:02,737 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:22:02,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:02,737 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:02,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281067504] [2022-01-10 08:22:02,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281067504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:02,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:02,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:02,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923030329] [2022-01-10 08:22:02,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:02,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:02,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:02,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:02,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:02,738 INFO L87 Difference]: Start difference. First operand 5994 states and 7290 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:02,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:02,958 INFO L93 Difference]: Finished difference Result 11346 states and 13674 transitions. [2022-01-10 08:22:02,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:02,959 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-01-10 08:22:02,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:02,976 INFO L225 Difference]: With dead ends: 11346 [2022-01-10 08:22:02,976 INFO L226 Difference]: Without dead ends: 5721 [2022-01-10 08:22:02,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 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 08:22:02,987 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 102 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1437 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 08:22:02,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1437 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:02,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5721 states. [2022-01-10 08:22:03,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5721 to 5718. [2022-01-10 08:22:03,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5718 states, 4438 states have (on average 1.2178909418657053) internal successors, (5405), 4582 states have internal predecessors, (5405), 593 states have call successors, (593), 483 states have call predecessors, (593), 685 states have return successors, (837), 655 states have call predecessors, (837), 592 states have call successors, (837) [2022-01-10 08:22:03,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5718 states to 5718 states and 6835 transitions. [2022-01-10 08:22:03,210 INFO L78 Accepts]: Start accepts. Automaton has 5718 states and 6835 transitions. Word has length 93 [2022-01-10 08:22:03,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:03,211 INFO L470 AbstractCegarLoop]: Abstraction has 5718 states and 6835 transitions. [2022-01-10 08:22:03,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:03,211 INFO L276 IsEmpty]: Start isEmpty. Operand 5718 states and 6835 transitions. [2022-01-10 08:22:03,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:22:03,217 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:03,217 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 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 08:22:03,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:03,426 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 08:22:03,427 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:03,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:03,427 INFO L85 PathProgramCache]: Analyzing trace with hash -2091971473, now seen corresponding path program 1 times [2022-01-10 08:22:03,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:03,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444015300] [2022-01-10 08:22:03,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:03,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:03,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:03,429 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 08:22:03,430 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 08:22:03,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:03,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:03,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:03,764 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-10 08:22:03,765 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:03,765 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:03,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444015300] [2022-01-10 08:22:03,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [444015300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:03,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:03,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:03,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290460163] [2022-01-10 08:22:03,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:03,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:03,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:03,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:03,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:03,766 INFO L87 Difference]: Start difference. First operand 5718 states and 6835 transitions. Second operand has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 08:22:04,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:04,513 INFO L93 Difference]: Finished difference Result 13627 states and 16179 transitions. [2022-01-10 08:22:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:22:04,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 159 [2022-01-10 08:22:04,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:04,536 INFO L225 Difference]: With dead ends: 13627 [2022-01-10 08:22:04,537 INFO L226 Difference]: Without dead ends: 8058 [2022-01-10 08:22:04,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:22:04,552 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 963 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 522 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 997 SdHoareTripleChecker+Valid, 1343 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:04,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [997 Valid, 1343 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 522 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:04,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8058 states. [2022-01-10 08:22:04,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8058 to 7705. [2022-01-10 08:22:04,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7705 states, 5936 states have (on average 1.2119272237196765) internal successors, (7194), 6116 states have internal predecessors, (7194), 813 states have call successors, (813), 672 states have call predecessors, (813), 954 states have return successors, (1131), 918 states have call predecessors, (1131), 812 states have call successors, (1131) [2022-01-10 08:22:04,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7705 states to 7705 states and 9138 transitions. [2022-01-10 08:22:04,939 INFO L78 Accepts]: Start accepts. Automaton has 7705 states and 9138 transitions. Word has length 159 [2022-01-10 08:22:04,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:04,940 INFO L470 AbstractCegarLoop]: Abstraction has 7705 states and 9138 transitions. [2022-01-10 08:22:04,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.4) internal successors, (82), 3 states have internal predecessors, (82), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2022-01-10 08:22:04,940 INFO L276 IsEmpty]: Start isEmpty. Operand 7705 states and 9138 transitions. [2022-01-10 08:22:04,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:04,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:04,945 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:04,955 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 08:22:05,154 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 08:22:05,155 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:05,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:05,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1328549862, now seen corresponding path program 1 times [2022-01-10 08:22:05,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:05,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [542174561] [2022-01-10 08:22:05,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:05,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:05,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:05,158 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 08:22:05,159 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 08:22:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:05,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:05,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:05,525 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 08:22:05,525 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:05,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:05,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [542174561] [2022-01-10 08:22:05,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [542174561] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:05,526 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:05,526 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:05,526 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202223637] [2022-01-10 08:22:05,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:05,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:05,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:05,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:05,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:05,527 INFO L87 Difference]: Start difference. First operand 7705 states and 9138 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:05,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:05,763 INFO L93 Difference]: Finished difference Result 8050 states and 9682 transitions. [2022-01-10 08:22:05,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:05,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:05,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:05,782 INFO L225 Difference]: With dead ends: 8050 [2022-01-10 08:22:05,782 INFO L226 Difference]: Without dead ends: 7705 [2022-01-10 08:22:05,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:05,785 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 545 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 545 SdHoareTripleChecker+Valid, 808 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 08:22:05,786 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [545 Valid, 808 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:05,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7705 states. [2022-01-10 08:22:06,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7705 to 7705. [2022-01-10 08:22:06,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7705 states, 5936 states have (on average 1.2117587601078168) internal successors, (7193), 6116 states have internal predecessors, (7193), 813 states have call successors, (813), 672 states have call predecessors, (813), 954 states have return successors, (1131), 918 states have call predecessors, (1131), 812 states have call successors, (1131) [2022-01-10 08:22:06,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7705 states to 7705 states and 9137 transitions. [2022-01-10 08:22:06,085 INFO L78 Accepts]: Start accepts. Automaton has 7705 states and 9137 transitions. Word has length 167 [2022-01-10 08:22:06,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:06,085 INFO L470 AbstractCegarLoop]: Abstraction has 7705 states and 9137 transitions. [2022-01-10 08:22:06,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:06,086 INFO L276 IsEmpty]: Start isEmpty. Operand 7705 states and 9137 transitions. [2022-01-10 08:22:06,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:06,089 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:06,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:06,103 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 08:22:06,300 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 08:22:06,301 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:06,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:06,301 INFO L85 PathProgramCache]: Analyzing trace with hash -771188568, now seen corresponding path program 1 times [2022-01-10 08:22:06,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:06,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1389238194] [2022-01-10 08:22:06,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:06,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:06,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:06,303 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 08:22:06,306 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 08:22:06,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:06,440 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:06,620 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 08:22:06,620 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:06,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:06,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1389238194] [2022-01-10 08:22:06,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1389238194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:06,621 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:06,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:06,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966174691] [2022-01-10 08:22:06,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:06,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:06,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:06,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:06,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:06,622 INFO L87 Difference]: Start difference. First operand 7705 states and 9137 transitions. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:06,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:06,807 INFO L93 Difference]: Finished difference Result 8042 states and 9665 transitions. [2022-01-10 08:22:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:06,808 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:06,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:06,824 INFO L225 Difference]: With dead ends: 8042 [2022-01-10 08:22:06,824 INFO L226 Difference]: Without dead ends: 7705 [2022-01-10 08:22:06,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:06,829 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 536 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 807 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 08:22:06,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 807 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:06,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7705 states. [2022-01-10 08:22:07,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7705 to 7705. [2022-01-10 08:22:07,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7705 states, 5936 states have (on average 1.2115902964959568) internal successors, (7192), 6116 states have internal predecessors, (7192), 813 states have call successors, (813), 672 states have call predecessors, (813), 954 states have return successors, (1131), 918 states have call predecessors, (1131), 812 states have call successors, (1131) [2022-01-10 08:22:07,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7705 states to 7705 states and 9136 transitions. [2022-01-10 08:22:07,171 INFO L78 Accepts]: Start accepts. Automaton has 7705 states and 9136 transitions. Word has length 167 [2022-01-10 08:22:07,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:07,171 INFO L470 AbstractCegarLoop]: Abstraction has 7705 states and 9136 transitions. [2022-01-10 08:22:07,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:07,172 INFO L276 IsEmpty]: Start isEmpty. Operand 7705 states and 9136 transitions. [2022-01-10 08:22:07,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:07,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:07,175 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:07,187 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 08:22:07,386 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 08:22:07,386 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:07,387 INFO L85 PathProgramCache]: Analyzing trace with hash 151978858, now seen corresponding path program 1 times [2022-01-10 08:22:07,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:07,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1753961675] [2022-01-10 08:22:07,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:07,388 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:07,389 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 08:22:07,390 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 08:22:07,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:07,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 471 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:07,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:07,748 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 08:22:07,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:07,749 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:07,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1753961675] [2022-01-10 08:22:07,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1753961675] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:07,749 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:07,749 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:07,749 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463960631] [2022-01-10 08:22:07,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:07,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:07,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:07,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:07,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:07,750 INFO L87 Difference]: Start difference. First operand 7705 states and 9136 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:08,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:08,616 INFO L93 Difference]: Finished difference Result 8415 states and 10268 transitions. [2022-01-10 08:22:08,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:08,617 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:08,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:08,641 INFO L225 Difference]: With dead ends: 8415 [2022-01-10 08:22:08,641 INFO L226 Difference]: Without dead ends: 8082 [2022-01-10 08:22:08,646 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:08,647 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 1226 mSDsluCounter, 1199 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 1913 SdHoareTripleChecker+Invalid, 649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:08,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1255 Valid, 1913 Invalid, 649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:22:08,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8082 states. [2022-01-10 08:22:09,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8082 to 8055. [2022-01-10 08:22:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.23134686052085) internal successors, (7707), 6440 states have internal predecessors, (7707), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:09,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9692 transitions. [2022-01-10 08:22:09,086 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9692 transitions. Word has length 167 [2022-01-10 08:22:09,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:09,086 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9692 transitions. [2022-01-10 08:22:09,086 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 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 08:22:09,086 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9692 transitions. [2022-01-10 08:22:09,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:09,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:09,090 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:09,107 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 08:22:09,303 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 08:22:09,304 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:09,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:09,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1151565038, now seen corresponding path program 1 times [2022-01-10 08:22:09,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:09,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [813183298] [2022-01-10 08:22:09,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:09,305 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:09,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:09,306 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 08:22:09,309 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 08:22:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:09,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 469 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:09,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:09,648 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 08:22:09,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:09,649 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:09,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [813183298] [2022-01-10 08:22:09,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [813183298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:09,649 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:09,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:09,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960198052] [2022-01-10 08:22:09,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:09,650 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:09,650 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:09,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:09,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:09,650 INFO L87 Difference]: Start difference. First operand 8055 states and 9692 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:10,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:10,223 INFO L93 Difference]: Finished difference Result 8738 states and 10776 transitions. [2022-01-10 08:22:10,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:10,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:10,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:10,243 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:10,243 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:10,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:10,247 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 913 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:10,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1338 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:10,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:10,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:10,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2302284710017575) internal successors, (7700), 6440 states have internal predecessors, (7700), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:10,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9685 transitions. [2022-01-10 08:22:10,561 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9685 transitions. Word has length 167 [2022-01-10 08:22:10,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:10,561 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9685 transitions. [2022-01-10 08:22:10,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:10,562 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9685 transitions. [2022-01-10 08:22:10,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:10,565 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:10,565 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:10,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:10,776 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 08:22:10,776 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:10,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:10,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1737999082, now seen corresponding path program 1 times [2022-01-10 08:22:10,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:10,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [360003248] [2022-01-10 08:22:10,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:10,778 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:10,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:10,779 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 08:22:10,820 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 08:22:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:10,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:10,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:11,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:11,186 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:11,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:11,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [360003248] [2022-01-10 08:22:11,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [360003248] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:11,186 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:11,186 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:11,186 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519464470] [2022-01-10 08:22:11,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:11,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:11,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:11,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:11,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:11,187 INFO L87 Difference]: Start difference. First operand 8055 states and 9685 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:11,824 INFO L93 Difference]: Finished difference Result 8738 states and 10762 transitions. [2022-01-10 08:22:11,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:11,824 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:11,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:11,843 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:11,844 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:11,848 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:11,849 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 906 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1331 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:11,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1331 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:11,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:12,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:12,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.229110081482665) internal successors, (7693), 6440 states have internal predecessors, (7693), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:12,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9678 transitions. [2022-01-10 08:22:12,189 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9678 transitions. Word has length 167 [2022-01-10 08:22:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:12,189 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9678 transitions. [2022-01-10 08:22:12,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:12,190 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9678 transitions. [2022-01-10 08:22:12,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:12,193 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:12,193 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:12,205 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 08:22:12,404 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 08:22:12,405 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:12,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:12,405 INFO L85 PathProgramCache]: Analyzing trace with hash -174237722, now seen corresponding path program 1 times [2022-01-10 08:22:12,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:12,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1988149446] [2022-01-10 08:22:12,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:12,406 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:12,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:12,407 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 08:22:12,409 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 08:22:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:12,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:12,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:12,864 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 08:22:12,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:12,865 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:12,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1988149446] [2022-01-10 08:22:12,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1988149446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:12,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:12,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:12,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135579844] [2022-01-10 08:22:12,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:12,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:12,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:12,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:12,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:12,866 INFO L87 Difference]: Start difference. First operand 8055 states and 9678 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:13,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:13,570 INFO L93 Difference]: Finished difference Result 8738 states and 10748 transitions. [2022-01-10 08:22:13,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:13,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:13,591 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:13,591 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:13,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:13,597 INFO L933 BasicCegarLoop]: 631 mSDtfsCounter, 900 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 929 SdHoareTripleChecker+Valid, 1324 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:13,597 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [929 Valid, 1324 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:13,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:14,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2279916919635725) internal successors, (7686), 6440 states have internal predecessors, (7686), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:14,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9671 transitions. [2022-01-10 08:22:14,069 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9671 transitions. Word has length 167 [2022-01-10 08:22:14,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:14,069 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9671 transitions. [2022-01-10 08:22:14,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:14,069 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9671 transitions. [2022-01-10 08:22:14,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:14,076 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:14,076 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:14,089 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 08:22:14,287 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 08:22:14,288 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:14,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:14,288 INFO L85 PathProgramCache]: Analyzing trace with hash -330218264, now seen corresponding path program 1 times [2022-01-10 08:22:14,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:14,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [763366358] [2022-01-10 08:22:14,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:14,289 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:14,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:14,290 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 08:22:14,292 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 08:22:14,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:14,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 464 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:14,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:14,712 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 08:22:14,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:14,712 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:14,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [763366358] [2022-01-10 08:22:14,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [763366358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:14,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:14,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:14,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3628150] [2022-01-10 08:22:14,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:14,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:14,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:14,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:14,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:14,714 INFO L87 Difference]: Start difference. First operand 8055 states and 9671 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:15,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:15,299 INFO L93 Difference]: Finished difference Result 8738 states and 10734 transitions. [2022-01-10 08:22:15,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:15,301 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:15,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:15,318 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:15,318 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:15,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:15,323 INFO L933 BasicCegarLoop]: 628 mSDtfsCounter, 894 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 923 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:15,323 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [923 Valid, 1317 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:15,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:15,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:15,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.22687330244448) internal successors, (7679), 6440 states have internal predecessors, (7679), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:15,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9664 transitions. [2022-01-10 08:22:15,670 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9664 transitions. Word has length 167 [2022-01-10 08:22:15,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:15,670 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9664 transitions. [2022-01-10 08:22:15,670 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:15,670 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9664 transitions. [2022-01-10 08:22:15,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:15,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:15,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:15,688 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 08:22:15,884 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 08:22:15,884 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:15,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:15,884 INFO L85 PathProgramCache]: Analyzing trace with hash -948967196, now seen corresponding path program 1 times [2022-01-10 08:22:15,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:15,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644018202] [2022-01-10 08:22:15,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:15,885 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:15,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:15,886 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 08:22:15,887 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 08:22:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:16,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:16,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:16,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:16,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:16,233 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:16,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644018202] [2022-01-10 08:22:16,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1644018202] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:16,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:16,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:16,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444070562] [2022-01-10 08:22:16,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:16,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:16,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:16,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:16,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:16,234 INFO L87 Difference]: Start difference. First operand 8055 states and 9664 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:16,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:16,830 INFO L93 Difference]: Finished difference Result 8738 states and 10720 transitions. [2022-01-10 08:22:16,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:16,831 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:16,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:16,844 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:16,844 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:16,847 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:16,848 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 888 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1310 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:16,848 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [917 Valid, 1310 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:16,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:17,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:17,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2257549129253875) internal successors, (7672), 6440 states have internal predecessors, (7672), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:17,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9657 transitions. [2022-01-10 08:22:17,199 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9657 transitions. Word has length 167 [2022-01-10 08:22:17,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:17,199 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9657 transitions. [2022-01-10 08:22:17,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:17,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9657 transitions. [2022-01-10 08:22:17,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:17,202 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:17,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:17,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:17,406 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 08:22:17,407 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:17,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:17,407 INFO L85 PathProgramCache]: Analyzing trace with hash -2077305496, now seen corresponding path program 1 times [2022-01-10 08:22:17,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:17,408 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1870670285] [2022-01-10 08:22:17,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:17,408 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:17,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:17,409 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 08:22:17,411 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 08:22:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:17,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 460 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:17,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:17,779 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 08:22:17,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:17,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:17,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1870670285] [2022-01-10 08:22:17,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1870670285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:17,780 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:17,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:17,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332952649] [2022-01-10 08:22:17,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:17,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:17,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:17,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:17,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:17,781 INFO L87 Difference]: Start difference. First operand 8055 states and 9657 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:18,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:18,393 INFO L93 Difference]: Finished difference Result 8738 states and 10706 transitions. [2022-01-10 08:22:18,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:18,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:18,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:18,408 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:18,408 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:18,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:18,411 INFO L933 BasicCegarLoop]: 622 mSDtfsCounter, 882 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1303 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:18,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [911 Valid, 1303 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:18,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:18,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:18,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.224636523406295) internal successors, (7665), 6440 states have internal predecessors, (7665), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9650 transitions. [2022-01-10 08:22:18,735 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9650 transitions. Word has length 167 [2022-01-10 08:22:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:18,736 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9650 transitions. [2022-01-10 08:22:18,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:18,736 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9650 transitions. [2022-01-10 08:22:18,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:18,738 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:18,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:18,746 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 08:22:18,938 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 08:22:18,939 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:18,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:18,939 INFO L85 PathProgramCache]: Analyzing trace with hash -312588188, now seen corresponding path program 1 times [2022-01-10 08:22:18,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:18,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [84448358] [2022-01-10 08:22:18,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:18,940 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:18,941 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 08:22:18,942 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 08:22:19,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:19,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:19,065 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:19,272 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 08:22:19,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:19,273 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:19,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [84448358] [2022-01-10 08:22:19,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [84448358] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:19,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:19,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:19,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504396597] [2022-01-10 08:22:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:19,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:19,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:19,274 INFO L87 Difference]: Start difference. First operand 8055 states and 9650 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:20,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:20,112 INFO L93 Difference]: Finished difference Result 8738 states and 10692 transitions. [2022-01-10 08:22:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:20,115 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:20,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:20,132 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:20,133 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:20,137 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:20,138 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 876 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 905 SdHoareTripleChecker+Valid, 1296 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:20,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [905 Valid, 1296 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:20,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:20,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:20,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2235181338872023) internal successors, (7658), 6440 states have internal predecessors, (7658), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:20,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9643 transitions. [2022-01-10 08:22:20,478 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9643 transitions. Word has length 167 [2022-01-10 08:22:20,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:20,478 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9643 transitions. [2022-01-10 08:22:20,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:20,478 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9643 transitions. [2022-01-10 08:22:20,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:20,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:20,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:20,494 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 08:22:20,692 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 08:22:20,692 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:20,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:20,693 INFO L85 PathProgramCache]: Analyzing trace with hash -1086945816, now seen corresponding path program 1 times [2022-01-10 08:22:20,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:20,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1465920681] [2022-01-10 08:22:20,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:20,693 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:20,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:20,694 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 08:22:20,695 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 08:22:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:20,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:20,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:21,068 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 08:22:21,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:21,068 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:21,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1465920681] [2022-01-10 08:22:21,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1465920681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:21,069 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:21,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:21,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460244727] [2022-01-10 08:22:21,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:21,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:21,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:21,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:21,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:21,070 INFO L87 Difference]: Start difference. First operand 8055 states and 9643 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:21,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:21,730 INFO L93 Difference]: Finished difference Result 8738 states and 10678 transitions. [2022-01-10 08:22:21,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:21,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:21,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:21,751 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:21,751 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:21,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:21,756 INFO L933 BasicCegarLoop]: 616 mSDtfsCounter, 870 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1289 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:21,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1289 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:21,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:22,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:22,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2223997443681098) internal successors, (7651), 6440 states have internal predecessors, (7651), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:22,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9636 transitions. [2022-01-10 08:22:22,152 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9636 transitions. Word has length 167 [2022-01-10 08:22:22,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:22,152 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9636 transitions. [2022-01-10 08:22:22,153 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:22,153 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9636 transitions. [2022-01-10 08:22:22,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:22,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:22,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:22,169 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 08:22:22,366 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 08:22:22,367 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:22,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:22,367 INFO L85 PathProgramCache]: Analyzing trace with hash 1381926884, now seen corresponding path program 1 times [2022-01-10 08:22:22,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:22,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [498201787] [2022-01-10 08:22:22,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:22,368 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:22,368 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:22,369 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 08:22:22,370 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 08:22:22,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:22,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 454 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:22,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:22,694 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 08:22:22,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:22,694 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:22,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [498201787] [2022-01-10 08:22:22,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [498201787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:22,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:22,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:22,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188643821] [2022-01-10 08:22:22,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:22,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:22,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:22,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:22,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:22,695 INFO L87 Difference]: Start difference. First operand 8055 states and 9636 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:23,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:23,354 INFO L93 Difference]: Finished difference Result 8738 states and 10664 transitions. [2022-01-10 08:22:23,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:23,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:23,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:23,370 INFO L225 Difference]: With dead ends: 8738 [2022-01-10 08:22:23,370 INFO L226 Difference]: Without dead ends: 8055 [2022-01-10 08:22:23,373 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:23,373 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 863 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:23,374 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1282 Invalid, 408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:23,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8055 states. [2022-01-10 08:22:23,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8055 to 8055. [2022-01-10 08:22:23,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8055 states, 6259 states have (on average 1.2212813548490173) internal successors, (7644), 6440 states have internal predecessors, (7644), 833 states have call successors, (833), 678 states have call predecessors, (833), 961 states have return successors, (1152), 938 states have call predecessors, (1152), 832 states have call successors, (1152) [2022-01-10 08:22:23,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8055 states to 8055 states and 9629 transitions. [2022-01-10 08:22:23,763 INFO L78 Accepts]: Start accepts. Automaton has 8055 states and 9629 transitions. Word has length 167 [2022-01-10 08:22:23,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:23,763 INFO L470 AbstractCegarLoop]: Abstraction has 8055 states and 9629 transitions. [2022-01-10 08:22:23,764 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:23,764 INFO L276 IsEmpty]: Start isEmpty. Operand 8055 states and 9629 transitions. [2022-01-10 08:22:23,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:23,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:23,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:22:23,777 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 08:22:23,977 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 08:22:23,977 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:23,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:23,978 INFO L85 PathProgramCache]: Analyzing trace with hash 39246048, now seen corresponding path program 1 times [2022-01-10 08:22:23,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:23,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [331081284] [2022-01-10 08:22:23,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:23,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:23,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:23,980 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 08:22:24,036 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 08:22:24,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:24,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 452 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:24,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:24,386 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 08:22:24,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:24,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:24,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [331081284] [2022-01-10 08:22:24,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [331081284] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:24,386 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:24,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:24,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684526684] [2022-01-10 08:22:24,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:24,387 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:24,387 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:24,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:24,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:24,387 INFO L87 Difference]: Start difference. First operand 8055 states and 9629 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:25,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:25,351 INFO L93 Difference]: Finished difference Result 8916 states and 10926 transitions. [2022-01-10 08:22:25,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:25,351 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:25,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:25,365 INFO L225 Difference]: With dead ends: 8916 [2022-01-10 08:22:25,366 INFO L226 Difference]: Without dead ends: 8233 [2022-01-10 08:22:25,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:25,370 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 973 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:25,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 1274 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:25,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8233 states. [2022-01-10 08:22:25,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8233 to 8233. [2022-01-10 08:22:25,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8233 states, 6431 states have (on average 1.2251593842326232) internal successors, (7879), 6612 states have internal predecessors, (7879), 835 states have call successors, (835), 682 states have call predecessors, (835), 965 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:25,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8233 states to 8233 states and 9868 transitions. [2022-01-10 08:22:25,779 INFO L78 Accepts]: Start accepts. Automaton has 8233 states and 9868 transitions. Word has length 167 [2022-01-10 08:22:25,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:25,779 INFO L470 AbstractCegarLoop]: Abstraction has 8233 states and 9868 transitions. [2022-01-10 08:22:25,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:25,779 INFO L276 IsEmpty]: Start isEmpty. Operand 8233 states and 9868 transitions. [2022-01-10 08:22:25,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:25,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:25,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:25,789 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 08:22:25,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:25,982 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:25,982 INFO L85 PathProgramCache]: Analyzing trace with hash 402712546, now seen corresponding path program 1 times [2022-01-10 08:22:25,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:25,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1133156667] [2022-01-10 08:22:25,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:25,983 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:25,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:25,984 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:25,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 08:22:26,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:26,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:26,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:26,317 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 08:22:26,318 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:26,318 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:26,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1133156667] [2022-01-10 08:22:26,318 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1133156667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:26,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:26,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:26,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395289520] [2022-01-10 08:22:26,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:26,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:26,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:26,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:26,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:26,319 INFO L87 Difference]: Start difference. First operand 8233 states and 9868 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:27,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:27,205 INFO L93 Difference]: Finished difference Result 9272 states and 11404 transitions. [2022-01-10 08:22:27,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:27,206 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:27,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:27,219 INFO L225 Difference]: With dead ends: 9272 [2022-01-10 08:22:27,219 INFO L226 Difference]: Without dead ends: 8411 [2022-01-10 08:22:27,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:27,223 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 966 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 487 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 487 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:27,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [995 Valid, 1268 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 487 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:27,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8411 states. [2022-01-10 08:22:27,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8411 to 8411. [2022-01-10 08:22:27,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8411 states, 6603 states have (on average 1.22822959260942) internal successors, (8110), 6784 states have internal predecessors, (8110), 837 states have call successors, (837), 686 states have call predecessors, (837), 969 states have return successors, (1156), 942 states have call predecessors, (1156), 836 states have call successors, (1156) [2022-01-10 08:22:27,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8411 states to 8411 states and 10103 transitions. [2022-01-10 08:22:27,624 INFO L78 Accepts]: Start accepts. Automaton has 8411 states and 10103 transitions. Word has length 167 [2022-01-10 08:22:27,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:27,624 INFO L470 AbstractCegarLoop]: Abstraction has 8411 states and 10103 transitions. [2022-01-10 08:22:27,624 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:27,624 INFO L276 IsEmpty]: Start isEmpty. Operand 8411 states and 10103 transitions. [2022-01-10 08:22:27,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:27,626 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:27,626 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:27,634 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 08:22:27,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:27,827 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:27,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:27,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1439243615, now seen corresponding path program 1 times [2022-01-10 08:22:27,828 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:27,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [522912070] [2022-01-10 08:22:27,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:27,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:27,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:27,829 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:27,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 08:22:27,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:27,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 448 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:27,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:28,167 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 08:22:28,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:28,168 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:28,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [522912070] [2022-01-10 08:22:28,168 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [522912070] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:28,168 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:28,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:28,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639489580] [2022-01-10 08:22:28,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:28,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:28,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:28,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:28,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:28,169 INFO L87 Difference]: Start difference. First operand 8411 states and 10103 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:29,053 INFO L93 Difference]: Finished difference Result 9628 states and 11874 transitions. [2022-01-10 08:22:29,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:29,054 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:29,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:29,068 INFO L225 Difference]: With dead ends: 9628 [2022-01-10 08:22:29,068 INFO L226 Difference]: Without dead ends: 8589 [2022-01-10 08:22:29,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:29,072 INFO L933 BasicCegarLoop]: 603 mSDtfsCounter, 960 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 1259 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:29,073 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [989 Valid, 1259 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:29,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8589 states. [2022-01-10 08:22:29,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8589 to 8589. [2022-01-10 08:22:29,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8589 states, 6775 states have (on average 1.2305535055350554) internal successors, (8337), 6956 states have internal predecessors, (8337), 839 states have call successors, (839), 690 states have call predecessors, (839), 973 states have return successors, (1158), 944 states have call predecessors, (1158), 838 states have call successors, (1158) [2022-01-10 08:22:29,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8589 states to 8589 states and 10334 transitions. [2022-01-10 08:22:29,463 INFO L78 Accepts]: Start accepts. Automaton has 8589 states and 10334 transitions. Word has length 167 [2022-01-10 08:22:29,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:29,463 INFO L470 AbstractCegarLoop]: Abstraction has 8589 states and 10334 transitions. [2022-01-10 08:22:29,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:29,463 INFO L276 IsEmpty]: Start isEmpty. Operand 8589 states and 10334 transitions. [2022-01-10 08:22:29,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:29,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:29,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:29,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 08:22:29,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:29,673 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:29,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:29,674 INFO L85 PathProgramCache]: Analyzing trace with hash -2014392861, now seen corresponding path program 1 times [2022-01-10 08:22:29,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:29,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922067181] [2022-01-10 08:22:29,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:29,674 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:29,674 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:29,675 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:29,676 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 08:22:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:29,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:29,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:29,994 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 08:22:29,994 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:29,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:29,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922067181] [2022-01-10 08:22:29,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922067181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:29,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:29,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:29,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192725079] [2022-01-10 08:22:29,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:29,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:29,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:29,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:29,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:29,999 INFO L87 Difference]: Start difference. First operand 8589 states and 10334 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:30,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:30,821 INFO L93 Difference]: Finished difference Result 9984 states and 12336 transitions. [2022-01-10 08:22:30,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:30,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:30,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:30,836 INFO L225 Difference]: With dead ends: 9984 [2022-01-10 08:22:30,837 INFO L226 Difference]: Without dead ends: 8767 [2022-01-10 08:22:30,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:30,842 INFO L933 BasicCegarLoop]: 600 mSDtfsCounter, 953 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 982 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:30,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [982 Valid, 1252 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:30,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8767 states. [2022-01-10 08:22:31,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8767 to 8767. [2022-01-10 08:22:31,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 6947 states have (on average 1.232186555347632) internal successors, (8560), 7128 states have internal predecessors, (8560), 841 states have call successors, (841), 694 states have call predecessors, (841), 977 states have return successors, (1160), 946 states have call predecessors, (1160), 840 states have call successors, (1160) [2022-01-10 08:22:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 10561 transitions. [2022-01-10 08:22:31,299 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 10561 transitions. Word has length 167 [2022-01-10 08:22:31,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:31,299 INFO L470 AbstractCegarLoop]: Abstraction has 8767 states and 10561 transitions. [2022-01-10 08:22:31,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:31,300 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 10561 transitions. [2022-01-10 08:22:31,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:31,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:31,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:31,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:31,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:31,503 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:31,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:31,503 INFO L85 PathProgramCache]: Analyzing trace with hash 335694816, now seen corresponding path program 1 times [2022-01-10 08:22:31,504 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:31,504 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2016469727] [2022-01-10 08:22:31,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:31,504 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:31,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:31,505 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:31,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 08:22:31,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:31,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 443 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:31,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:31,838 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 08:22:31,838 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:31,839 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:31,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2016469727] [2022-01-10 08:22:31,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2016469727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:31,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:31,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:31,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248770601] [2022-01-10 08:22:31,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:31,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:31,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:31,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:31,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:31,840 INFO L87 Difference]: Start difference. First operand 8767 states and 10561 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:32,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:32,706 INFO L93 Difference]: Finished difference Result 10340 states and 12790 transitions. [2022-01-10 08:22:32,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:32,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:32,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:32,721 INFO L225 Difference]: With dead ends: 10340 [2022-01-10 08:22:32,721 INFO L226 Difference]: Without dead ends: 8945 [2022-01-10 08:22:32,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:32,725 INFO L933 BasicCegarLoop]: 597 mSDtfsCounter, 946 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 975 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:32,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [975 Valid, 1245 Invalid, 538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:32,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8945 states. [2022-01-10 08:22:33,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8945 to 8945. [2022-01-10 08:22:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8945 states, 7119 states have (on average 1.2331788172496136) internal successors, (8779), 7300 states have internal predecessors, (8779), 843 states have call successors, (843), 698 states have call predecessors, (843), 981 states have return successors, (1162), 948 states have call predecessors, (1162), 842 states have call successors, (1162) [2022-01-10 08:22:33,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8945 states to 8945 states and 10784 transitions. [2022-01-10 08:22:33,198 INFO L78 Accepts]: Start accepts. Automaton has 8945 states and 10784 transitions. Word has length 167 [2022-01-10 08:22:33,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:33,198 INFO L470 AbstractCegarLoop]: Abstraction has 8945 states and 10784 transitions. [2022-01-10 08:22:33,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:33,198 INFO L276 IsEmpty]: Start isEmpty. Operand 8945 states and 10784 transitions. [2022-01-10 08:22:33,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:33,200 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:33,200 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:33,208 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 08:22:33,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:33,401 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:33,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:33,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1866911451, now seen corresponding path program 1 times [2022-01-10 08:22:33,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:33,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1191851297] [2022-01-10 08:22:33,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:33,402 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:33,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:33,403 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:33,403 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 08:22:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:33,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:33,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:33,746 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 08:22:33,746 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:33,746 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:33,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1191851297] [2022-01-10 08:22:33,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1191851297] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:33,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:33,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:33,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892163240] [2022-01-10 08:22:33,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:33,747 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:33,747 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:33,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:33,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:33,748 INFO L87 Difference]: Start difference. First operand 8945 states and 10784 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:34,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:34,819 INFO L93 Difference]: Finished difference Result 10696 states and 13236 transitions. [2022-01-10 08:22:34,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:34,820 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:34,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:34,834 INFO L225 Difference]: With dead ends: 10696 [2022-01-10 08:22:34,834 INFO L226 Difference]: Without dead ends: 9123 [2022-01-10 08:22:34,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:34,837 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 939 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 968 SdHoareTripleChecker+Valid, 1238 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:34,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [968 Valid, 1238 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 481 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:34,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9123 states. [2022-01-10 08:22:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9123 to 9123. [2022-01-10 08:22:35,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9123 states, 7291 states have (on average 1.2335756412014813) internal successors, (8994), 7472 states have internal predecessors, (8994), 845 states have call successors, (845), 702 states have call predecessors, (845), 985 states have return successors, (1164), 950 states have call predecessors, (1164), 844 states have call successors, (1164) [2022-01-10 08:22:35,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9123 states to 9123 states and 11003 transitions. [2022-01-10 08:22:35,302 INFO L78 Accepts]: Start accepts. Automaton has 9123 states and 11003 transitions. Word has length 167 [2022-01-10 08:22:35,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:35,302 INFO L470 AbstractCegarLoop]: Abstraction has 9123 states and 11003 transitions. [2022-01-10 08:22:35,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:35,303 INFO L276 IsEmpty]: Start isEmpty. Operand 9123 states and 11003 transitions. [2022-01-10 08:22:35,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:35,305 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:35,305 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:35,313 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 08:22:35,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:35,505 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:35,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:35,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1905323809, now seen corresponding path program 1 times [2022-01-10 08:22:35,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:35,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779272598] [2022-01-10 08:22:35,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:35,506 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:35,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:35,507 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:35,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 08:22:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:35,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:35,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:35,828 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 08:22:35,829 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:35,829 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:35,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779272598] [2022-01-10 08:22:35,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779272598] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:35,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:35,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:35,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212800149] [2022-01-10 08:22:35,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:35,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:35,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:35,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:35,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:35,830 INFO L87 Difference]: Start difference. First operand 9123 states and 11003 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:36,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:36,730 INFO L93 Difference]: Finished difference Result 11052 states and 13674 transitions. [2022-01-10 08:22:36,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:36,731 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:36,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:36,749 INFO L225 Difference]: With dead ends: 11052 [2022-01-10 08:22:36,749 INFO L226 Difference]: Without dead ends: 9301 [2022-01-10 08:22:36,755 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:36,755 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 931 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1231 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:36,755 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1231 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:36,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9301 states. [2022-01-10 08:22:37,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9301 to 9301. [2022-01-10 08:22:37,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9301 states, 7463 states have (on average 1.2334181964357498) internal successors, (9205), 7644 states have internal predecessors, (9205), 847 states have call successors, (847), 706 states have call predecessors, (847), 989 states have return successors, (1166), 952 states have call predecessors, (1166), 846 states have call successors, (1166) [2022-01-10 08:22:37,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9301 states to 9301 states and 11218 transitions. [2022-01-10 08:22:37,284 INFO L78 Accepts]: Start accepts. Automaton has 9301 states and 11218 transitions. Word has length 167 [2022-01-10 08:22:37,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:37,285 INFO L470 AbstractCegarLoop]: Abstraction has 9301 states and 11218 transitions. [2022-01-10 08:22:37,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:37,285 INFO L276 IsEmpty]: Start isEmpty. Operand 9301 states and 11218 transitions. [2022-01-10 08:22:37,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:37,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:37,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:37,294 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 08:22:37,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:37,487 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:37,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1341651997, now seen corresponding path program 1 times [2022-01-10 08:22:37,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:37,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2061582626] [2022-01-10 08:22:37,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:37,488 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:37,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:37,516 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:37,517 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 08:22:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:37,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:37,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:37,847 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 08:22:37,847 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:37,847 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:37,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2061582626] [2022-01-10 08:22:37,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2061582626] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:37,847 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:37,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:37,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317801108] [2022-01-10 08:22:37,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:37,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:37,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:37,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:37,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:37,848 INFO L87 Difference]: Start difference. First operand 9301 states and 11218 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:38,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:38,793 INFO L93 Difference]: Finished difference Result 11408 states and 14104 transitions. [2022-01-10 08:22:38,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:38,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:38,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:38,806 INFO L225 Difference]: With dead ends: 11408 [2022-01-10 08:22:38,806 INFO L226 Difference]: Without dead ends: 9479 [2022-01-10 08:22:38,809 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:38,809 INFO L933 BasicCegarLoop]: 588 mSDtfsCounter, 924 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 479 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 1224 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:38,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [953 Valid, 1224 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 479 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9479 states. [2022-01-10 08:22:39,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9479 to 9479. [2022-01-10 08:22:39,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9479 states, 7635 states have (on average 1.2327439423706614) internal successors, (9412), 7816 states have internal predecessors, (9412), 849 states have call successors, (849), 710 states have call predecessors, (849), 993 states have return successors, (1168), 954 states have call predecessors, (1168), 848 states have call successors, (1168) [2022-01-10 08:22:39,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9479 states to 9479 states and 11429 transitions. [2022-01-10 08:22:39,315 INFO L78 Accepts]: Start accepts. Automaton has 9479 states and 11429 transitions. Word has length 167 [2022-01-10 08:22:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:39,316 INFO L470 AbstractCegarLoop]: Abstraction has 9479 states and 11429 transitions. [2022-01-10 08:22:39,316 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:39,316 INFO L276 IsEmpty]: Start isEmpty. Operand 9479 states and 11429 transitions. [2022-01-10 08:22:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:39,318 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:39,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:39,326 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 08:22:39,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:39,518 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:39,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:39,519 INFO L85 PathProgramCache]: Analyzing trace with hash 1772684256, now seen corresponding path program 1 times [2022-01-10 08:22:39,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:39,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [353343853] [2022-01-10 08:22:39,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:39,520 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:39,520 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:39,522 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:39,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 08:22:39,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:39,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 434 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:39,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:39,855 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 08:22:39,855 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:39,855 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:39,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [353343853] [2022-01-10 08:22:39,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [353343853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:39,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:39,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:39,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786183735] [2022-01-10 08:22:39,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:39,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:39,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:39,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:39,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:39,857 INFO L87 Difference]: Start difference. First operand 9479 states and 11429 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:40,796 INFO L93 Difference]: Finished difference Result 11764 states and 14526 transitions. [2022-01-10 08:22:40,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:40,797 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:40,818 INFO L225 Difference]: With dead ends: 11764 [2022-01-10 08:22:40,819 INFO L226 Difference]: Without dead ends: 9657 [2022-01-10 08:22:40,824 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:40,824 INFO L933 BasicCegarLoop]: 585 mSDtfsCounter, 917 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 946 SdHoareTripleChecker+Valid, 1217 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:40,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [946 Valid, 1217 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:40,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9657 states. [2022-01-10 08:22:41,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9657 to 9657. [2022-01-10 08:22:41,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9657 states, 7807 states have (on average 1.231587037274241) internal successors, (9615), 7988 states have internal predecessors, (9615), 851 states have call successors, (851), 714 states have call predecessors, (851), 997 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2022-01-10 08:22:41,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9657 states to 9657 states and 11636 transitions. [2022-01-10 08:22:41,392 INFO L78 Accepts]: Start accepts. Automaton has 9657 states and 11636 transitions. Word has length 167 [2022-01-10 08:22:41,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:41,393 INFO L470 AbstractCegarLoop]: Abstraction has 9657 states and 11636 transitions. [2022-01-10 08:22:41,393 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:41,393 INFO L276 IsEmpty]: Start isEmpty. Operand 9657 states and 11636 transitions. [2022-01-10 08:22:41,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:41,395 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:41,395 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:41,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:41,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:41,596 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:41,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:41,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1356390436, now seen corresponding path program 1 times [2022-01-10 08:22:41,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:41,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1418172664] [2022-01-10 08:22:41,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:41,597 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:41,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:41,598 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:41,598 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 08:22:41,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:41,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 432 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:41,730 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:41,932 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 08:22:41,933 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:41,933 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:41,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1418172664] [2022-01-10 08:22:41,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1418172664] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:41,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:41,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:41,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774829292] [2022-01-10 08:22:41,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:41,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:41,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:41,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:41,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:41,934 INFO L87 Difference]: Start difference. First operand 9657 states and 11636 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:43,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:43,005 INFO L93 Difference]: Finished difference Result 12120 states and 14940 transitions. [2022-01-10 08:22:43,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:43,006 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:43,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:43,020 INFO L225 Difference]: With dead ends: 12120 [2022-01-10 08:22:43,020 INFO L226 Difference]: Without dead ends: 9835 [2022-01-10 08:22:43,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:43,024 INFO L933 BasicCegarLoop]: 582 mSDtfsCounter, 910 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 939 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:43,024 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [939 Valid, 1210 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:43,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9835 states. [2022-01-10 08:22:43,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9835 to 9835. [2022-01-10 08:22:43,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9835 states, 7979 states have (on average 1.2299786940719388) internal successors, (9814), 8160 states have internal predecessors, (9814), 853 states have call successors, (853), 718 states have call predecessors, (853), 1001 states have return successors, (1172), 958 states have call predecessors, (1172), 852 states have call successors, (1172) [2022-01-10 08:22:43,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9835 states to 9835 states and 11839 transitions. [2022-01-10 08:22:43,627 INFO L78 Accepts]: Start accepts. Automaton has 9835 states and 11839 transitions. Word has length 167 [2022-01-10 08:22:43,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:43,627 INFO L470 AbstractCegarLoop]: Abstraction has 9835 states and 11839 transitions. [2022-01-10 08:22:43,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:43,627 INFO L276 IsEmpty]: Start isEmpty. Operand 9835 states and 11839 transitions. [2022-01-10 08:22:43,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:43,629 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:43,629 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:43,637 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 08:22:43,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:43,830 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:43,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:43,831 INFO L85 PathProgramCache]: Analyzing trace with hash 168412321, now seen corresponding path program 1 times [2022-01-10 08:22:43,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:43,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [162341348] [2022-01-10 08:22:43,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:43,831 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:43,832 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:43,833 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 08:22:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:43,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 429 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:43,972 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:44,201 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 08:22:44,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:44,202 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:44,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [162341348] [2022-01-10 08:22:44,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [162341348] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:44,202 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:44,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:44,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279901984] [2022-01-10 08:22:44,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:44,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:44,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:44,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:44,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:44,203 INFO L87 Difference]: Start difference. First operand 9835 states and 11839 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:45,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:45,168 INFO L93 Difference]: Finished difference Result 12476 states and 15346 transitions. [2022-01-10 08:22:45,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:45,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:45,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:45,183 INFO L225 Difference]: With dead ends: 12476 [2022-01-10 08:22:45,183 INFO L226 Difference]: Without dead ends: 10013 [2022-01-10 08:22:45,188 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 163 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 08:22:45,188 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 903 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 1203 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:45,188 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [932 Valid, 1203 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:45,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10013 states. [2022-01-10 08:22:45,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10013 to 10013. [2022-01-10 08:22:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10013 states, 8151 states have (on average 1.2279474911053858) internal successors, (10009), 8332 states have internal predecessors, (10009), 855 states have call successors, (855), 722 states have call predecessors, (855), 1005 states have return successors, (1174), 960 states have call predecessors, (1174), 854 states have call successors, (1174) [2022-01-10 08:22:45,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10013 states to 10013 states and 12038 transitions. [2022-01-10 08:22:45,805 INFO L78 Accepts]: Start accepts. Automaton has 10013 states and 12038 transitions. Word has length 167 [2022-01-10 08:22:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:45,805 INFO L470 AbstractCegarLoop]: Abstraction has 10013 states and 12038 transitions. [2022-01-10 08:22:45,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 4 states have internal predecessors, (157), 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 08:22:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 10013 states and 12038 transitions. [2022-01-10 08:22:45,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:45,807 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:45,807 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:45,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 08:22:46,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:46,008 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:46,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:46,009 INFO L85 PathProgramCache]: Analyzing trace with hash -505518946, now seen corresponding path program 1 times [2022-01-10 08:22:46,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:46,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728473768] [2022-01-10 08:22:46,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:46,009 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:46,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:46,010 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:46,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 08:22:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:46,132 INFO L263 TraceCheckSpWp]: Trace formula consists of 426 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:46,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:46,311 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 08:22:46,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:46,311 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728473768] [2022-01-10 08:22:46,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728473768] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:46,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:46,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:46,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857228458] [2022-01-10 08:22:46,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:46,312 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:46,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:46,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:46,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:46,315 INFO L87 Difference]: Start difference. First operand 10013 states and 12038 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 08:22:46,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:46,928 INFO L93 Difference]: Finished difference Result 12975 states and 15927 transitions. [2022-01-10 08:22:46,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:46,928 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:46,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:46,947 INFO L225 Difference]: With dead ends: 12975 [2022-01-10 08:22:46,947 INFO L226 Difference]: Without dead ends: 10335 [2022-01-10 08:22:46,952 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 08:22:46,953 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 440 mSDsluCounter, 2020 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2637 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 08:22:46,953 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2637 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:46,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10335 states. [2022-01-10 08:22:47,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10335 to 10019. [2022-01-10 08:22:47,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10019 states, 8157 states have (on average 1.2250827510114013) internal successors, (9993), 8338 states have internal predecessors, (9993), 855 states have call successors, (855), 722 states have call predecessors, (855), 1005 states have return successors, (1174), 960 states have call predecessors, (1174), 854 states have call successors, (1174) [2022-01-10 08:22:47,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10019 states to 10019 states and 12022 transitions. [2022-01-10 08:22:47,595 INFO L78 Accepts]: Start accepts. Automaton has 10019 states and 12022 transitions. Word has length 167 [2022-01-10 08:22:47,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:47,595 INFO L470 AbstractCegarLoop]: Abstraction has 10019 states and 12022 transitions. [2022-01-10 08:22:47,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 08:22:47,596 INFO L276 IsEmpty]: Start isEmpty. Operand 10019 states and 12022 transitions. [2022-01-10 08:22:47,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:47,598 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:47,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:47,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Ended with exit code 0 [2022-01-10 08:22:47,798 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:47,799 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:47,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:47,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1221626016, now seen corresponding path program 1 times [2022-01-10 08:22:47,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:47,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139355363] [2022-01-10 08:22:47,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:47,800 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:47,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:47,801 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:47,802 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 08:22:47,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:47,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 425 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:47,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:48,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:48,116 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:48,116 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:48,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139355363] [2022-01-10 08:22:48,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139355363] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:48,116 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:48,116 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:48,116 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631085553] [2022-01-10 08:22:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:48,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:48,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:48,117 INFO L87 Difference]: Start difference. First operand 10019 states and 12022 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 08:22:48,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:48,684 INFO L93 Difference]: Finished difference Result 12959 states and 15859 transitions. [2022-01-10 08:22:48,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:48,685 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:48,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:48,712 INFO L225 Difference]: With dead ends: 12959 [2022-01-10 08:22:48,712 INFO L226 Difference]: Without dead ends: 10313 [2022-01-10 08:22:48,722 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 08:22:48,722 INFO L933 BasicCegarLoop]: 619 mSDtfsCounter, 401 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2630 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 08:22:48,723 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:48,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10313 states. [2022-01-10 08:22:49,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10313 to 10025. [2022-01-10 08:22:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10025 states, 8163 states have (on average 1.2222222222222223) internal successors, (9977), 8344 states have internal predecessors, (9977), 855 states have call successors, (855), 722 states have call predecessors, (855), 1005 states have return successors, (1174), 960 states have call predecessors, (1174), 854 states have call successors, (1174) [2022-01-10 08:22:49,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10025 states to 10025 states and 12006 transitions. [2022-01-10 08:22:49,371 INFO L78 Accepts]: Start accepts. Automaton has 10025 states and 12006 transitions. Word has length 167 [2022-01-10 08:22:49,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:49,372 INFO L470 AbstractCegarLoop]: Abstraction has 10025 states and 12006 transitions. [2022-01-10 08:22:49,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 08:22:49,372 INFO L276 IsEmpty]: Start isEmpty. Operand 10025 states and 12006 transitions. [2022-01-10 08:22:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-01-10 08:22:49,374 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:49,374 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:49,382 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 08:22:49,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:49,574 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:49,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:49,575 INFO L85 PathProgramCache]: Analyzing trace with hash -920234462, now seen corresponding path program 1 times [2022-01-10 08:22:49,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:49,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1064285597] [2022-01-10 08:22:49,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:49,575 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:49,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:49,576 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:49,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 08:22:49,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:49,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:49,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:49,921 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 08:22:49,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:49,922 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:49,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1064285597] [2022-01-10 08:22:49,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1064285597] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:49,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:49,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:49,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395942883] [2022-01-10 08:22:49,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:49,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:49,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:49,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:49,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:49,923 INFO L87 Difference]: Start difference. First operand 10025 states and 12006 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 08:22:50,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:50,650 INFO L93 Difference]: Finished difference Result 12943 states and 15791 transitions. [2022-01-10 08:22:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:50,650 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 5 states have internal predecessors, (157), 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 167 [2022-01-10 08:22:50,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:50,665 INFO L225 Difference]: With dead ends: 12943 [2022-01-10 08:22:50,665 INFO L226 Difference]: Without dead ends: 10291 [2022-01-10 08:22:50,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 163 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 08:22:50,671 INFO L933 BasicCegarLoop]: 617 mSDtfsCounter, 362 mSDsluCounter, 1990 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2607 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 08:22:50,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2607 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:50,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10291 states.