/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.09.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:21:10,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:21:10,386 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:21:10,422 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:21:10,422 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:21:10,423 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:21:10,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:21:10,425 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:21:10,426 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:21:10,433 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:21:10,437 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:21:10,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:21:10,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:21:10,440 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:21:10,440 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:21:10,441 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:21:10,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:21:10,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:21:10,443 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:21:10,444 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:21:10,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:21:10,449 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:21:10,451 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:21:10,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:21:10,455 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:21:10,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:21:10,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:21:10,455 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:21:10,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:21:10,456 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-01-10 08:21:10,459 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:21:10,459 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:21:10,460 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:21:10,462 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 08:21:10,474 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:21:10,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:21:10,474 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:21:10,474 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:21:10,475 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:21:10,475 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:21:10,475 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:21:10,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:21:10,476 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:21:10,477 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:21:10,477 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:10,478 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:21:10,478 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:21:10,479 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:21:10,623 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:21:10,638 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:21:10,640 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:21:10,640 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:21:10,641 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:21:10,642 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-01-10 08:21:10,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80efac2e2/41e31c8ec4d44cbe87863a723ef219be/FLAG9598787c7 [2022-01-10 08:21:11,096 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:21:11,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-01-10 08:21:11,107 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80efac2e2/41e31c8ec4d44cbe87863a723ef219be/FLAG9598787c7 [2022-01-10 08:21:11,119 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80efac2e2/41e31c8ec4d44cbe87863a723ef219be [2022-01-10 08:21:11,121 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:21:11,122 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:21:11,125 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:11,125 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:21:11,127 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:21:11,128 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@576f7ec0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11, skipping insertion in model container [2022-01-10 08:21:11,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:21:11,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:21:11,312 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.09.cil-1.c[914,927] [2022-01-10 08:21:11,349 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.09.cil-1.c[7115,7128] [2022-01-10 08:21:11,401 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:11,422 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:21:11,431 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.09.cil-1.c[914,927] [2022-01-10 08:21:11,443 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.09.cil-1.c[7115,7128] [2022-01-10 08:21:11,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:11,500 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:21:11,500 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11 WrapperNode [2022-01-10 08:21:11,501 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:11,501 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:11,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:21:11,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:21:11,506 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,517 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,556 INFO L137 Inliner]: procedures = 72, calls = 84, calls flagged for inlining = 40, calls inlined = 40, statements flattened = 833 [2022-01-10 08:21:11,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:11,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:21:11,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:21:11,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:21:11,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,573 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,607 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,610 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,614 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:21:11,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:21:11,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:21:11,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:21:11,623 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (1/1) ... [2022-01-10 08:21:11,632 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:11,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:21:11,654 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 08:21:11,671 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 08:21:11,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:21:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:21:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:21:11,696 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:21:11,696 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:21:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:21:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:21:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:21:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:21:11,697 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:21:11,697 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:21:11,698 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:21:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:21:11,698 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:21:11,700 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:21:11,700 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:21:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:21:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:21:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:21:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:21:11,701 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:21:11,701 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:21:11,836 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:21:11,838 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:21:12,541 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:21:12,553 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:21:12,553 INFO L299 CfgBuilder]: Removed 16 assume(true) statements. [2022-01-10 08:21:12,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:12 BoogieIcfgContainer [2022-01-10 08:21:12,555 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:21:12,556 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:21:12,556 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:21:12,560 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:21:12,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:21:11" (1/3) ... [2022-01-10 08:21:12,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d61df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:12, skipping insertion in model container [2022-01-10 08:21:12,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:11" (2/3) ... [2022-01-10 08:21:12,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76d61df6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:12, skipping insertion in model container [2022-01-10 08:21:12,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:12" (3/3) ... [2022-01-10 08:21:12,562 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.09.cil-1.c [2022-01-10 08:21:12,567 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:21:12,567 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:21:12,619 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:21:12,627 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 08:21:12,627 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:21:12,663 INFO L276 IsEmpty]: Start isEmpty. Operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) [2022-01-10 08:21:12,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:12,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:12,674 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 08:21:12,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:12,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:12,679 INFO L85 PathProgramCache]: Analyzing trace with hash 398033314, now seen corresponding path program 1 times [2022-01-10 08:21:12,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:12,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1501140549] [2022-01-10 08:21:12,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:12,690 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:12,690 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:12,692 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 08:21:12,693 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 08:21:12,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:12,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:21:12,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:12,973 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 08:21:12,973 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:12,974 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:12,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1501140549] [2022-01-10 08:21:12,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1501140549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:12,974 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:12,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:12,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092656397] [2022-01-10 08:21:12,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:12,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:12,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:13,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:13,011 INFO L87 Difference]: Start difference. First operand has 408 states, 354 states have (on average 1.6271186440677967) internal successors, (576), 360 states have internal predecessors, (576), 37 states have call successors, (37), 14 states have call predecessors, (37), 14 states have return successors, (37), 36 states have call predecessors, (37), 37 states have call successors, (37) 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 08:21:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:13,785 INFO L93 Difference]: Finished difference Result 894 states and 1418 transitions. [2022-01-10 08:21:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:13,788 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 08:21:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:13,798 INFO L225 Difference]: With dead ends: 894 [2022-01-10 08:21:13,799 INFO L226 Difference]: Without dead ends: 501 [2022-01-10 08:21:13,810 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 08:21:13,812 INFO L933 BasicCegarLoop]: 615 mSDtfsCounter, 417 mSDsluCounter, 934 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 1549 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:13,813 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 1549 Invalid, 735 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 675 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:21:13,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2022-01-10 08:21:13,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 494. [2022-01-10 08:21:13,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 422 states have (on average 1.509478672985782) internal successors, (637), 428 states have internal predecessors, (637), 48 states have call successors, (48), 21 states have call predecessors, (48), 22 states have return successors, (51), 47 states have call predecessors, (51), 46 states have call successors, (51) [2022-01-10 08:21:13,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 736 transitions. [2022-01-10 08:21:13,872 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 736 transitions. Word has length 65 [2022-01-10 08:21:13,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:13,872 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 736 transitions. [2022-01-10 08:21:13,872 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 08:21:13,873 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 736 transitions. [2022-01-10 08:21:13,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:13,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:13,875 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:13,885 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 08:21:14,082 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 08:21:14,083 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:14,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:14,084 INFO L85 PathProgramCache]: Analyzing trace with hash 2076921954, now seen corresponding path program 1 times [2022-01-10 08:21:14,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:14,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [563471471] [2022-01-10 08:21:14,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:14,084 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:14,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:14,085 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 08:21:14,087 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 08:21:14,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:14,181 INFO L263 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:21:14,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:14,289 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 08:21:14,289 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:14,290 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:14,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [563471471] [2022-01-10 08:21:14,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [563471471] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:14,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:14,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:14,290 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742794048] [2022-01-10 08:21:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:14,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:14,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:14,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:14,292 INFO L87 Difference]: Start difference. First operand 494 states and 736 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 08:21:14,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:14,873 INFO L93 Difference]: Finished difference Result 886 states and 1290 transitions. [2022-01-10 08:21:14,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:14,873 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 08:21:14,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:14,878 INFO L225 Difference]: With dead ends: 886 [2022-01-10 08:21:14,878 INFO L226 Difference]: Without dead ends: 707 [2022-01-10 08:21:14,878 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 08:21:14,879 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 404 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1522 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:14,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 1522 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:21:14,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-01-10 08:21:14,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 699. [2022-01-10 08:21:14,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 583 states have (on average 1.463121783876501) internal successors, (853), 597 states have internal predecessors, (853), 70 states have call successors, (70), 35 states have call predecessors, (70), 44 states have return successors, (93), 71 states have call predecessors, (93), 68 states have call successors, (93) [2022-01-10 08:21:14,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1016 transitions. [2022-01-10 08:21:14,931 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1016 transitions. Word has length 65 [2022-01-10 08:21:14,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:14,932 INFO L470 AbstractCegarLoop]: Abstraction has 699 states and 1016 transitions. [2022-01-10 08:21:14,932 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 08:21:14,932 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1016 transitions. [2022-01-10 08:21:14,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:14,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:14,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:14,946 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 08:21:15,141 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 08:21:15,142 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:15,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:15,142 INFO L85 PathProgramCache]: Analyzing trace with hash -85677662, now seen corresponding path program 1 times [2022-01-10 08:21:15,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:15,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [134780099] [2022-01-10 08:21:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:15,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:15,144 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 08:21:15,145 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 08:21:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:15,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:15,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:15,299 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 08:21:15,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:15,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:15,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [134780099] [2022-01-10 08:21:15,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [134780099] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:15,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:15,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:15,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671908261] [2022-01-10 08:21:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:15,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:15,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:15,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:15,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:15,305 INFO L87 Difference]: Start difference. First operand 699 states and 1016 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 08:21:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:15,349 INFO L93 Difference]: Finished difference Result 1089 states and 1548 transitions. [2022-01-10 08:21:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:15,350 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 08:21:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:15,355 INFO L225 Difference]: With dead ends: 1089 [2022-01-10 08:21:15,355 INFO L226 Difference]: Without dead ends: 719 [2022-01-10 08:21:15,356 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 08:21:15,358 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 7 mSDsluCounter, 2402 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3004 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 08:21:15,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3004 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:15,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2022-01-10 08:21:15,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 709. [2022-01-10 08:21:15,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 709 states, 591 states have (on average 1.4534686971235196) internal successors, (859), 605 states have internal predecessors, (859), 70 states have call successors, (70), 35 states have call predecessors, (70), 46 states have return successors, (95), 73 states have call predecessors, (95), 68 states have call successors, (95) [2022-01-10 08:21:15,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 709 states to 709 states and 1024 transitions. [2022-01-10 08:21:15,396 INFO L78 Accepts]: Start accepts. Automaton has 709 states and 1024 transitions. Word has length 65 [2022-01-10 08:21:15,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:15,396 INFO L470 AbstractCegarLoop]: Abstraction has 709 states and 1024 transitions. [2022-01-10 08:21:15,396 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 08:21:15,396 INFO L276 IsEmpty]: Start isEmpty. Operand 709 states and 1024 transitions. [2022-01-10 08:21:15,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:15,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:15,401 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 08:21:15,409 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:15,607 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 08:21:15,608 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:15,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:15,609 INFO L85 PathProgramCache]: Analyzing trace with hash -1115036960, now seen corresponding path program 1 times [2022-01-10 08:21:15,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:15,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [194496998] [2022-01-10 08:21:15,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:15,609 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:15,609 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:15,610 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 08:21:15,632 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 08:21:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:15,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:15,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:15,799 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 08:21:15,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:15,800 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:15,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [194496998] [2022-01-10 08:21:15,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [194496998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:15,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:15,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:15,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380198651] [2022-01-10 08:21:15,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:15,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:15,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:15,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:15,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:15,805 INFO L87 Difference]: Start difference. First operand 709 states and 1024 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 08:21:15,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:15,841 INFO L93 Difference]: Finished difference Result 1103 states and 1554 transitions. [2022-01-10 08:21:15,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:15,841 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 08:21:15,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:15,845 INFO L225 Difference]: With dead ends: 1103 [2022-01-10 08:21:15,845 INFO L226 Difference]: Without dead ends: 723 [2022-01-10 08:21:15,848 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 08:21:15,850 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 4 mSDsluCounter, 2399 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3000 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 08:21:15,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3000 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:15,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2022-01-10 08:21:15,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 719. [2022-01-10 08:21:15,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 719 states, 599 states have (on average 1.4440734557595993) internal successors, (865), 613 states have internal predecessors, (865), 70 states have call successors, (70), 35 states have call predecessors, (70), 48 states have return successors, (97), 75 states have call predecessors, (97), 68 states have call successors, (97) [2022-01-10 08:21:15,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 719 states to 719 states and 1032 transitions. [2022-01-10 08:21:15,881 INFO L78 Accepts]: Start accepts. Automaton has 719 states and 1032 transitions. Word has length 65 [2022-01-10 08:21:15,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:15,884 INFO L470 AbstractCegarLoop]: Abstraction has 719 states and 1032 transitions. [2022-01-10 08:21:15,884 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 08:21:15,884 INFO L276 IsEmpty]: Start isEmpty. Operand 719 states and 1032 transitions. [2022-01-10 08:21:15,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:15,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:15,886 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 08:21:15,901 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 08:21:16,095 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 08:21:16,096 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:16,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 271166434, now seen corresponding path program 1 times [2022-01-10 08:21:16,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:16,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [287881359] [2022-01-10 08:21:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:16,097 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:16,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:16,097 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 08:21:16,098 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 08:21:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:16,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:16,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:16,262 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 08:21:16,262 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:16,262 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:16,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [287881359] [2022-01-10 08:21:16,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [287881359] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:16,263 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:16,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:16,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143636995] [2022-01-10 08:21:16,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:16,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:16,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:16,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:16,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:16,264 INFO L87 Difference]: Start difference. First operand 719 states and 1032 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 08:21:16,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:16,487 INFO L93 Difference]: Finished difference Result 1491 states and 2053 transitions. [2022-01-10 08:21:16,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:16,487 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 08:21:16,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:16,492 INFO L225 Difference]: With dead ends: 1491 [2022-01-10 08:21:16,492 INFO L226 Difference]: Without dead ends: 1105 [2022-01-10 08:21:16,493 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 08:21:16,493 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 827 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 855 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:16,493 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [855 Valid, 918 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:21:16,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-01-10 08:21:16,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1101. [2022-01-10 08:21:16,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1101 states, 891 states have (on average 1.388327721661055) internal successors, (1237), 920 states have internal predecessors, (1237), 116 states have call successors, (116), 63 states have call predecessors, (116), 92 states have return successors, (182), 126 states have call predecessors, (182), 114 states have call successors, (182) [2022-01-10 08:21:16,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1101 states to 1101 states and 1535 transitions. [2022-01-10 08:21:16,527 INFO L78 Accepts]: Start accepts. Automaton has 1101 states and 1535 transitions. Word has length 65 [2022-01-10 08:21:16,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:16,527 INFO L470 AbstractCegarLoop]: Abstraction has 1101 states and 1535 transitions. [2022-01-10 08:21:16,527 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 08:21:16,527 INFO L276 IsEmpty]: Start isEmpty. Operand 1101 states and 1535 transitions. [2022-01-10 08:21:16,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:16,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:16,530 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 08:21:16,541 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 08:21:16,741 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 08:21:16,742 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash 498977079, now seen corresponding path program 1 times [2022-01-10 08:21:16,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:16,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1401706093] [2022-01-10 08:21:16,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:16,742 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:16,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:16,743 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 08:21:16,745 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 08:21:16,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:16,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:16,811 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:16,913 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 08:21:16,913 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:16,913 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:16,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1401706093] [2022-01-10 08:21:16,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1401706093] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:16,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:16,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:16,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678638674] [2022-01-10 08:21:16,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:16,914 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:16,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:16,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:16,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:16,914 INFO L87 Difference]: Start difference. First operand 1101 states and 1535 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 08:21:16,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:16,962 INFO L93 Difference]: Finished difference Result 2517 states and 3382 transitions. [2022-01-10 08:21:16,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:16,963 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 08:21:16,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:16,969 INFO L225 Difference]: With dead ends: 2517 [2022-01-10 08:21:16,969 INFO L226 Difference]: Without dead ends: 1733 [2022-01-10 08:21:16,971 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 08:21:16,971 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 66 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1182 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 08:21:16,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1182 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:16,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1733 states. [2022-01-10 08:21:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1733 to 1705. [2022-01-10 08:21:17,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1705 states, 1365 states have (on average 1.3450549450549452) internal successors, (1836), 1403 states have internal predecessors, (1836), 170 states have call successors, (170), 119 states have call predecessors, (170), 168 states have return successors, (262), 187 states have call predecessors, (262), 168 states have call successors, (262) [2022-01-10 08:21:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1705 states to 1705 states and 2268 transitions. [2022-01-10 08:21:17,032 INFO L78 Accepts]: Start accepts. Automaton has 1705 states and 2268 transitions. Word has length 66 [2022-01-10 08:21:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 1705 states and 2268 transitions. [2022-01-10 08:21:17,032 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 08:21:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 1705 states and 2268 transitions. [2022-01-10 08:21:17,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:17,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:17,033 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 08:21:17,040 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 08:21:17,240 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 08:21:17,240 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:17,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:17,241 INFO L85 PathProgramCache]: Analyzing trace with hash 1957216738, now seen corresponding path program 1 times [2022-01-10 08:21:17,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:17,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458075064] [2022-01-10 08:21:17,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:17,241 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:17,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:17,242 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 08:21:17,244 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 08:21:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:17,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:17,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:17,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:17,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:17,424 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:17,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458075064] [2022-01-10 08:21:17,426 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458075064] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:17,426 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:17,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:17,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477377861] [2022-01-10 08:21:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:17,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:17,427 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:17,427 INFO L87 Difference]: Start difference. First operand 1705 states and 2268 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 08:21:17,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:17,494 INFO L93 Difference]: Finished difference Result 4369 states and 5695 transitions. [2022-01-10 08:21:17,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:17,495 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 08:21:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:17,506 INFO L225 Difference]: With dead ends: 4369 [2022-01-10 08:21:17,506 INFO L226 Difference]: Without dead ends: 2989 [2022-01-10 08:21:17,510 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 08:21:17,511 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 536 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 536 SdHoareTripleChecker+Valid, 722 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 08:21:17,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [536 Valid, 722 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:17,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2989 states. [2022-01-10 08:21:17,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2989 to 2929. [2022-01-10 08:21:17,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2929 states, 2303 states have (on average 1.3000434216239687) internal successors, (2994), 2375 states have internal predecessors, (2994), 302 states have call successors, (302), 231 states have call predecessors, (302), 322 states have return successors, (474), 327 states have call predecessors, (474), 300 states have call successors, (474) [2022-01-10 08:21:17,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2929 states to 2929 states and 3770 transitions. [2022-01-10 08:21:17,584 INFO L78 Accepts]: Start accepts. Automaton has 2929 states and 3770 transitions. Word has length 66 [2022-01-10 08:21:17,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:17,584 INFO L470 AbstractCegarLoop]: Abstraction has 2929 states and 3770 transitions. [2022-01-10 08:21:17,585 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 08:21:17,585 INFO L276 IsEmpty]: Start isEmpty. Operand 2929 states and 3770 transitions. [2022-01-10 08:21:17,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 08:21:17,586 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:17,586 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 08:21:17,597 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 08:21:17,794 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 08:21:17,795 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:17,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:17,795 INFO L85 PathProgramCache]: Analyzing trace with hash 388589846, now seen corresponding path program 1 times [2022-01-10 08:21:17,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:17,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [146932379] [2022-01-10 08:21:17,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:17,796 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:17,796 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:17,797 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 08:21:17,799 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 08:21:17,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:17,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:17,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:17,990 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 08:21:17,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:17,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:17,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [146932379] [2022-01-10 08:21:17,990 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [146932379] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:17,990 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:17,990 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:17,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425358583] [2022-01-10 08:21:17,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:18,020 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:18,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:18,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:18,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:18,021 INFO L87 Difference]: Start difference. First operand 2929 states and 3770 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 08:21:18,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:18,104 INFO L93 Difference]: Finished difference Result 6141 states and 7784 transitions. [2022-01-10 08:21:18,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:18,104 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 08:21:18,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:18,117 INFO L225 Difference]: With dead ends: 6141 [2022-01-10 08:21:18,117 INFO L226 Difference]: Without dead ends: 3537 [2022-01-10 08:21:18,123 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 08:21:18,124 INFO L933 BasicCegarLoop]: 624 mSDtfsCounter, 532 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 732 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 08:21:18,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [532 Valid, 732 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3537 states. [2022-01-10 08:21:18,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3537 to 3493. [2022-01-10 08:21:18,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3493 states, 2739 states have (on average 1.2829499817451624) internal successors, (3514), 2819 states have internal predecessors, (3514), 366 states have call successors, (366), 287 states have call predecessors, (366), 386 states have return successors, (557), 391 states have call predecessors, (557), 364 states have call successors, (557) [2022-01-10 08:21:18,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3493 states to 3493 states and 4437 transitions. [2022-01-10 08:21:18,218 INFO L78 Accepts]: Start accepts. Automaton has 3493 states and 4437 transitions. Word has length 72 [2022-01-10 08:21:18,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:18,218 INFO L470 AbstractCegarLoop]: Abstraction has 3493 states and 4437 transitions. [2022-01-10 08:21:18,218 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 08:21:18,218 INFO L276 IsEmpty]: Start isEmpty. Operand 3493 states and 4437 transitions. [2022-01-10 08:21:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 08:21:18,220 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:18,220 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 08:21:18,228 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 08:21:18,427 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 08:21:18,427 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:18,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1355326336, now seen corresponding path program 1 times [2022-01-10 08:21:18,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:18,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [666243619] [2022-01-10 08:21:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:18,428 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:18,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:18,429 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 08:21:18,431 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 08:21:18,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:18,501 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:18,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:18,578 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 08:21:18,579 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:18,579 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:18,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [666243619] [2022-01-10 08:21:18,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [666243619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:18,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:18,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:18,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759142750] [2022-01-10 08:21:18,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:18,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:18,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:18,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:18,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:18,580 INFO L87 Difference]: Start difference. First operand 3493 states and 4437 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 08:21:18,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:18,802 INFO L93 Difference]: Finished difference Result 4173 states and 5270 transitions. [2022-01-10 08:21:18,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:18,803 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 08:21:18,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:18,817 INFO L225 Difference]: With dead ends: 4173 [2022-01-10 08:21:18,817 INFO L226 Difference]: Without dead ends: 4170 [2022-01-10 08:21:18,819 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 08:21:18,819 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1123 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1123 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:18,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1123 Valid, 715 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-10 08:21:18,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4170 states. [2022-01-10 08:21:18,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4170 to 4128. [2022-01-10 08:21:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4128 states, 3229 states have (on average 1.2743883555280273) internal successors, (4115), 3323 states have internal predecessors, (4115), 431 states have call successors, (431), 343 states have call predecessors, (431), 466 states have return successors, (660), 466 states have call predecessors, (660), 430 states have call successors, (660) [2022-01-10 08:21:18,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4128 states to 4128 states and 5206 transitions. [2022-01-10 08:21:18,946 INFO L78 Accepts]: Start accepts. Automaton has 4128 states and 5206 transitions. Word has length 73 [2022-01-10 08:21:18,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:18,947 INFO L470 AbstractCegarLoop]: Abstraction has 4128 states and 5206 transitions. [2022-01-10 08:21:18,947 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 08:21:18,947 INFO L276 IsEmpty]: Start isEmpty. Operand 4128 states and 5206 transitions. [2022-01-10 08:21:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 08:21:18,948 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:18,948 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 08:21:18,957 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 08:21:19,154 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 08:21:19,155 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:19,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:19,156 INFO L85 PathProgramCache]: Analyzing trace with hash 933342880, now seen corresponding path program 1 times [2022-01-10 08:21:19,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:19,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754911872] [2022-01-10 08:21:19,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:19,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:19,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:19,163 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 08:21:19,183 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 08:21:19,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:19,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:19,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:19,555 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 08:21:19,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:21:19,689 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 08:21:19,690 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:19,690 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754911872] [2022-01-10 08:21:19,690 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754911872] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:21:19,690 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:21:19,690 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-01-10 08:21:19,690 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [784953708] [2022-01-10 08:21:19,690 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:21:19,690 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:21:19,690 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:19,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:21:19,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:21:19,691 INFO L87 Difference]: Start difference. First operand 4128 states and 5206 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 08:21:20,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:20,091 INFO L93 Difference]: Finished difference Result 9111 states and 11406 transitions. [2022-01-10 08:21:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:21:20,092 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 08:21:20,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:20,123 INFO L225 Difference]: With dead ends: 9111 [2022-01-10 08:21:20,124 INFO L226 Difference]: Without dead ends: 9108 [2022-01-10 08:21:20,129 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 08:21:20,129 INFO L933 BasicCegarLoop]: 818 mSDtfsCounter, 1554 mSDsluCounter, 1429 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1554 SdHoareTripleChecker+Valid, 2247 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:20,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1554 Valid, 2247 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:21:20,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9108 states. [2022-01-10 08:21:20,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9108 to 6710. [2022-01-10 08:21:20,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6710 states, 5231 states have (on average 1.2661059070923342) internal successors, (6623), 5391 states have internal predecessors, (6623), 695 states have call successors, (695), 567 states have call predecessors, (695), 782 states have return successors, (1094), 756 states have call predecessors, (1094), 694 states have call successors, (1094) [2022-01-10 08:21:20,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6710 states to 6710 states and 8412 transitions. [2022-01-10 08:21:20,379 INFO L78 Accepts]: Start accepts. Automaton has 6710 states and 8412 transitions. Word has length 74 [2022-01-10 08:21:20,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:20,379 INFO L470 AbstractCegarLoop]: Abstraction has 6710 states and 8412 transitions. [2022-01-10 08:21:20,379 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 08:21:20,379 INFO L276 IsEmpty]: Start isEmpty. Operand 6710 states and 8412 transitions. [2022-01-10 08:21:20,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 08:21:20,380 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:20,381 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 08:21:20,389 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 08:21:20,587 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 08:21:20,587 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:20,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:20,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1804001536, now seen corresponding path program 2 times [2022-01-10 08:21:20,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:20,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [311466419] [2022-01-10 08:21:20,588 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:21:20,588 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:20,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:20,589 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 08:21:20,590 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 08:21:20,657 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:21:20,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:21:20,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:20,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:20,742 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 08:21:20,742 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:20,742 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:20,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [311466419] [2022-01-10 08:21:20,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [311466419] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:20,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:20,743 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:20,743 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325962369] [2022-01-10 08:21:20,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:20,743 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:20,743 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:20,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:20,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:20,744 INFO L87 Difference]: Start difference. First operand 6710 states and 8412 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 08:21:20,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:20,878 INFO L93 Difference]: Finished difference Result 9957 states and 12544 transitions. [2022-01-10 08:21:20,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:20,879 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 08:21:20,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:20,897 INFO L225 Difference]: With dead ends: 9957 [2022-01-10 08:21:20,897 INFO L226 Difference]: Without dead ends: 4146 [2022-01-10 08:21:20,909 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 08:21:20,909 INFO L933 BasicCegarLoop]: 678 mSDtfsCounter, 572 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 795 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 08:21:20,910 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [572 Valid, 795 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:20,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2022-01-10 08:21:21,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4114. [2022-01-10 08:21:21,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4114 states, 3219 states have (on average 1.2603292948120535) internal successors, (4057), 3309 states have internal predecessors, (4057), 431 states have call successors, (431), 343 states have call predecessors, (431), 462 states have return successors, (628), 466 states have call predecessors, (628), 430 states have call successors, (628) [2022-01-10 08:21:21,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4114 states to 4114 states and 5116 transitions. [2022-01-10 08:21:21,033 INFO L78 Accepts]: Start accepts. Automaton has 4114 states and 5116 transitions. Word has length 77 [2022-01-10 08:21:21,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:21,033 INFO L470 AbstractCegarLoop]: Abstraction has 4114 states and 5116 transitions. [2022-01-10 08:21:21,034 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 08:21:21,034 INFO L276 IsEmpty]: Start isEmpty. Operand 4114 states and 5116 transitions. [2022-01-10 08:21:21,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 08:21:21,036 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:21,036 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 08:21:21,045 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 08:21:21,245 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 08:21:21,245 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:21,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:21,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1529654834, now seen corresponding path program 1 times [2022-01-10 08:21:21,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:21,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2004415091] [2022-01-10 08:21:21,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:21,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:21,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:21,260 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 08:21:21,262 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 08:21:21,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:21,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:21,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:21,447 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 08:21:21,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:21,448 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:21,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2004415091] [2022-01-10 08:21:21,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2004415091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:21,448 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:21,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949490302] [2022-01-10 08:21:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:21,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:21,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:21,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:21,449 INFO L87 Difference]: Start difference. First operand 4114 states and 5116 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 08:21:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:21,675 INFO L93 Difference]: Finished difference Result 11137 states and 13661 transitions. [2022-01-10 08:21:21,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:21,676 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 08:21:21,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:21,712 INFO L225 Difference]: With dead ends: 11137 [2022-01-10 08:21:21,712 INFO L226 Difference]: Without dead ends: 5914 [2022-01-10 08:21:21,728 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 08:21:21,729 INFO L933 BasicCegarLoop]: 691 mSDtfsCounter, 89 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1283 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 08:21:21,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1283 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:21,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5914 states. [2022-01-10 08:21:21,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5914 to 5914. [2022-01-10 08:21:21,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5914 states, 4581 states have (on average 1.239467365204104) internal successors, (5678), 4716 states have internal predecessors, (5678), 629 states have call successors, (629), 511 states have call predecessors, (629), 702 states have return successors, (952), 691 states have call predecessors, (952), 628 states have call successors, (952) [2022-01-10 08:21:21,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5914 states to 5914 states and 7259 transitions. [2022-01-10 08:21:21,995 INFO L78 Accepts]: Start accepts. Automaton has 5914 states and 7259 transitions. Word has length 84 [2022-01-10 08:21:21,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:21,995 INFO L470 AbstractCegarLoop]: Abstraction has 5914 states and 7259 transitions. [2022-01-10 08:21:21,995 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 08:21:21,995 INFO L276 IsEmpty]: Start isEmpty. Operand 5914 states and 7259 transitions. [2022-01-10 08:21:21,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 08:21:21,997 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:21,997 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 08:21:22,006 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 08:21:22,204 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 08:21:22,204 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:22,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:22,204 INFO L85 PathProgramCache]: Analyzing trace with hash -563303562, now seen corresponding path program 1 times [2022-01-10 08:21:22,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:22,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [17307298] [2022-01-10 08:21:22,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:22,205 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:22,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:22,206 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 08:21:22,207 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 08:21:22,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:22,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:22,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:22,405 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 08:21:22,405 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:22,405 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:22,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [17307298] [2022-01-10 08:21:22,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [17307298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:22,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:22,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:22,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047614241] [2022-01-10 08:21:22,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:22,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:22,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:22,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:22,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:22,406 INFO L87 Difference]: Start difference. First operand 5914 states and 7259 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 08:21:22,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:22,756 INFO L93 Difference]: Finished difference Result 11529 states and 14059 transitions. [2022-01-10 08:21:22,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:22,757 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 08:21:22,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:22,770 INFO L225 Difference]: With dead ends: 11529 [2022-01-10 08:21:22,770 INFO L226 Difference]: Without dead ends: 5944 [2022-01-10 08:21:22,779 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 08:21:22,779 INFO L933 BasicCegarLoop]: 578 mSDtfsCounter, 807 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 834 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:22,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [834 Valid, 899 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:21:22,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5944 states. [2022-01-10 08:21:22,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5944. [2022-01-10 08:21:22,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5944 states, 4596 states have (on average 1.224325500435161) internal successors, (5627), 4746 states have internal predecessors, (5627), 629 states have call successors, (629), 511 states have call predecessors, (629), 717 states have return successors, (952), 691 states have call predecessors, (952), 628 states have call successors, (952) [2022-01-10 08:21:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5944 states to 5944 states and 7208 transitions. [2022-01-10 08:21:22,942 INFO L78 Accepts]: Start accepts. Automaton has 5944 states and 7208 transitions. Word has length 92 [2022-01-10 08:21:22,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:22,942 INFO L470 AbstractCegarLoop]: Abstraction has 5944 states and 7208 transitions. [2022-01-10 08:21:22,943 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 08:21:22,943 INFO L276 IsEmpty]: Start isEmpty. Operand 5944 states and 7208 transitions. [2022-01-10 08:21:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:21:22,945 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:22,945 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 08:21:22,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:23,159 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 08:21:23,160 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1318594338, now seen corresponding path program 1 times [2022-01-10 08:21:23,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [961141797] [2022-01-10 08:21:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:23,160 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:23,161 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 08:21:23,178 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 08:21:23,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:23,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:23,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:23,334 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 08:21:23,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:23,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:23,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [961141797] [2022-01-10 08:21:23,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [961141797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:23,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:23,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:23,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841412278] [2022-01-10 08:21:23,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:23,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:23,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:23,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:23,336 INFO L87 Difference]: Start difference. First operand 5944 states and 7208 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 08:21:23,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:23,469 INFO L93 Difference]: Finished difference Result 11296 states and 13592 transitions. [2022-01-10 08:21:23,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:23,470 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 08:21:23,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:23,483 INFO L225 Difference]: With dead ends: 11296 [2022-01-10 08:21:23,483 INFO L226 Difference]: Without dead ends: 5671 [2022-01-10 08:21:23,492 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 08:21:23,492 INFO L933 BasicCegarLoop]: 684 mSDtfsCounter, 102 mSDsluCounter, 589 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1273 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 08:21:23,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1273 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:23,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5671 states. [2022-01-10 08:21:23,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5671 to 5668. [2022-01-10 08:21:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 4390 states have (on average 1.2134396355353074) internal successors, (5327), 4534 states have internal predecessors, (5327), 591 states have call successors, (591), 483 states have call predecessors, (591), 685 states have return successors, (835), 653 states have call predecessors, (835), 590 states have call successors, (835) [2022-01-10 08:21:23,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 6753 transitions. [2022-01-10 08:21:23,688 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 6753 transitions. Word has length 93 [2022-01-10 08:21:23,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:23,688 INFO L470 AbstractCegarLoop]: Abstraction has 5668 states and 6753 transitions. [2022-01-10 08:21:23,688 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 08:21:23,688 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 6753 transitions. [2022-01-10 08:21:23,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:23,692 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:23,692 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] [2022-01-10 08:21:23,701 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 08:21:23,899 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 08:21:23,899 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:23,900 INFO L85 PathProgramCache]: Analyzing trace with hash -854471620, now seen corresponding path program 1 times [2022-01-10 08:21:23,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:23,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1564645045] [2022-01-10 08:21:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:23,900 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:23,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:23,901 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 08:21:23,901 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 08:21:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:24,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:24,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:24,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:24,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:24,134 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:24,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1564645045] [2022-01-10 08:21:24,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1564645045] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:24,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:24,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:24,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318943959] [2022-01-10 08:21:24,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:24,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:24,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:24,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:24,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:24,135 INFO L87 Difference]: Start difference. First operand 5668 states and 6753 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 08:21:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:24,268 INFO L93 Difference]: Finished difference Result 5962 states and 7213 transitions. [2022-01-10 08:21:24,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:24,279 INFO L225 Difference]: With dead ends: 5962 [2022-01-10 08:21:24,279 INFO L226 Difference]: Without dead ends: 5668 [2022-01-10 08:21:24,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 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 08:21:24,282 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 462 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 726 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 08:21:24,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 726 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:24,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5668 states. [2022-01-10 08:21:24,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5668 to 5668. [2022-01-10 08:21:24,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5668 states, 4390 states have (on average 1.2132118451025058) internal successors, (5326), 4534 states have internal predecessors, (5326), 591 states have call successors, (591), 483 states have call predecessors, (591), 685 states have return successors, (835), 653 states have call predecessors, (835), 590 states have call successors, (835) [2022-01-10 08:21:24,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5668 states to 5668 states and 6752 transitions. [2022-01-10 08:21:24,451 INFO L78 Accepts]: Start accepts. Automaton has 5668 states and 6752 transitions. Word has length 145 [2022-01-10 08:21:24,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:24,452 INFO L470 AbstractCegarLoop]: Abstraction has 5668 states and 6752 transitions. [2022-01-10 08:21:24,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 3 states have internal predecessors, (135), 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 08:21:24,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5668 states and 6752 transitions. [2022-01-10 08:21:24,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:24,455 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:24,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:24,469 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 08:21:24,669 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 08:21:24,670 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:24,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:24,670 INFO L85 PathProgramCache]: Analyzing trace with hash 2041542074, now seen corresponding path program 1 times [2022-01-10 08:21:24,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:24,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1223671543] [2022-01-10 08:21:24,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:24,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:24,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:24,671 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 08:21:24,673 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 08:21:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:24,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 404 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:24,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:24,943 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 08:21:24,943 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:24,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:24,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1223671543] [2022-01-10 08:21:24,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1223671543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:24,950 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:24,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:24,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262016053] [2022-01-10 08:21:24,950 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:24,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:24,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:24,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:24,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:24,951 INFO L87 Difference]: Start difference. First operand 5668 states and 6752 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 08:21:25,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:25,612 INFO L93 Difference]: Finished difference Result 6274 states and 7712 transitions. [2022-01-10 08:21:25,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:25,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:25,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:25,624 INFO L225 Difference]: With dead ends: 6274 [2022-01-10 08:21:25,624 INFO L226 Difference]: Without dead ends: 5989 [2022-01-10 08:21:25,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:25,626 INFO L933 BasicCegarLoop]: 625 mSDtfsCounter, 1057 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:25,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1084 Valid, 1658 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:21:25,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5989 states. [2022-01-10 08:21:25,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5989 to 5966. [2022-01-10 08:21:25,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.235041818571735) internal successors, (5759), 4808 states have internal predecessors, (5759), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:25,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7222 transitions. [2022-01-10 08:21:25,785 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7222 transitions. Word has length 145 [2022-01-10 08:21:25,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:25,786 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7222 transitions. [2022-01-10 08:21:25,787 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 08:21:25,787 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7222 transitions. [2022-01-10 08:21:25,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:25,791 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:25,791 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] [2022-01-10 08:21:25,803 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 08:21:25,998 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 08:21:25,999 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:25,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1334945468, now seen corresponding path program 1 times [2022-01-10 08:21:26,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:26,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [896698446] [2022-01-10 08:21:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:26,000 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:26,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:26,001 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 08:21:26,002 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 08:21:26,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:26,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:26,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:26,284 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 08:21:26,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:26,285 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:26,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [896698446] [2022-01-10 08:21:26,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [896698446] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:26,285 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:26,285 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:26,285 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095854123] [2022-01-10 08:21:26,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:26,285 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:26,285 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:26,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:26,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:26,286 INFO L87 Difference]: Start difference. First operand 5966 states and 7222 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:26,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:26,741 INFO L93 Difference]: Finished difference Result 6549 states and 8142 transitions. [2022-01-10 08:21:26,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:26,741 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:26,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:26,755 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:26,756 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:26,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:26,760 INFO L933 BasicCegarLoop]: 558 mSDtfsCounter, 796 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:26,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [823 Valid, 1169 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:26,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:26,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:26,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2335406390735577) internal successors, (5752), 4808 states have internal predecessors, (5752), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:26,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7215 transitions. [2022-01-10 08:21:26,957 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7215 transitions. Word has length 145 [2022-01-10 08:21:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:26,957 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7215 transitions. [2022-01-10 08:21:26,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7215 transitions. [2022-01-10 08:21:26,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:26,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:26,964 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] [2022-01-10 08:21:26,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 08:21:27,172 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 08:21:27,172 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:27,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:27,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1252624056, now seen corresponding path program 1 times [2022-01-10 08:21:27,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:27,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [775544740] [2022-01-10 08:21:27,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:27,174 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:27,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:27,188 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 08:21:27,199 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 08:21:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:27,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:27,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:27,499 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 08:21:27,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:27,499 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:27,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [775544740] [2022-01-10 08:21:27,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [775544740] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:27,499 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:27,499 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:27,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546771935] [2022-01-10 08:21:27,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:27,500 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:27,500 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:27,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:27,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:27,500 INFO L87 Difference]: Start difference. First operand 5966 states and 7215 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:27,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:27,917 INFO L93 Difference]: Finished difference Result 6549 states and 8128 transitions. [2022-01-10 08:21:27,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:27,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:27,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:27,928 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:27,928 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:27,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:27,931 INFO L933 BasicCegarLoop]: 555 mSDtfsCounter, 790 mSDsluCounter, 607 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1162 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:27,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 1162 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:27,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:28,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:28,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2320394595753807) internal successors, (5745), 4808 states have internal predecessors, (5745), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:28,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7208 transitions. [2022-01-10 08:21:28,159 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7208 transitions. Word has length 145 [2022-01-10 08:21:28,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:28,160 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7208 transitions. [2022-01-10 08:21:28,160 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:28,160 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7208 transitions. [2022-01-10 08:21:28,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:28,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:28,164 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:28,171 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 08:21:28,371 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 08:21:28,371 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:28,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:28,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1520978116, now seen corresponding path program 1 times [2022-01-10 08:21:28,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:28,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775128936] [2022-01-10 08:21:28,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:28,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:28,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:28,373 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 08:21:28,388 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 08:21:28,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:28,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 399 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:28,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:28,655 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 08:21:28,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:28,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:28,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775128936] [2022-01-10 08:21:28,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775128936] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:28,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:28,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:28,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158912395] [2022-01-10 08:21:28,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:28,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:28,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:28,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:28,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:28,658 INFO L87 Difference]: Start difference. First operand 5966 states and 7208 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:29,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:29,097 INFO L93 Difference]: Finished difference Result 6549 states and 8114 transitions. [2022-01-10 08:21:29,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:29,097 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:29,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:29,106 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:29,107 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:29,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:29,109 INFO L933 BasicCegarLoop]: 552 mSDtfsCounter, 784 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:29,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [811 Valid, 1155 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:29,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:29,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2305382800772036) internal successors, (5738), 4808 states have internal predecessors, (5738), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:29,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7201 transitions. [2022-01-10 08:21:29,286 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7201 transitions. Word has length 145 [2022-01-10 08:21:29,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:29,287 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7201 transitions. [2022-01-10 08:21:29,287 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:29,287 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7201 transitions. [2022-01-10 08:21:29,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:29,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:29,291 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] [2022-01-10 08:21:29,301 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 08:21:29,498 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 08:21:29,498 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:29,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:29,498 INFO L85 PathProgramCache]: Analyzing trace with hash 329213496, now seen corresponding path program 1 times [2022-01-10 08:21:29,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:29,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [778904041] [2022-01-10 08:21:29,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:29,499 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:29,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:29,500 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 08:21:29,501 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 08:21:29,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:29,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 397 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:29,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:29,780 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 08:21:29,780 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:29,780 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:29,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [778904041] [2022-01-10 08:21:29,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [778904041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:29,781 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:29,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:29,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206391922] [2022-01-10 08:21:29,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:29,781 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:29,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:29,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:29,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:29,781 INFO L87 Difference]: Start difference. First operand 5966 states and 7201 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:30,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:30,254 INFO L93 Difference]: Finished difference Result 6549 states and 8100 transitions. [2022-01-10 08:21:30,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:30,255 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:30,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:30,266 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:30,266 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:30,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:30,269 INFO L933 BasicCegarLoop]: 549 mSDtfsCounter, 778 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:30,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [805 Valid, 1148 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:30,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:30,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:30,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2290371005790264) internal successors, (5731), 4808 states have internal predecessors, (5731), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:30,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7194 transitions. [2022-01-10 08:21:30,459 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7194 transitions. Word has length 145 [2022-01-10 08:21:30,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:30,460 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7194 transitions. [2022-01-10 08:21:30,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:30,460 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7194 transitions. [2022-01-10 08:21:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:30,463 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:30,463 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] [2022-01-10 08:21:30,473 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 08:21:30,671 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 08:21:30,671 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:30,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:30,672 INFO L85 PathProgramCache]: Analyzing trace with hash -26744900, now seen corresponding path program 1 times [2022-01-10 08:21:30,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:30,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1132094290] [2022-01-10 08:21:30,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:30,672 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:30,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:30,673 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 08:21:30,674 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 08:21:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:30,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 395 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:30,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:30,972 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 08:21:30,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:30,972 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:30,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1132094290] [2022-01-10 08:21:30,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1132094290] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:30,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:30,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:30,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477556559] [2022-01-10 08:21:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:30,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:30,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:30,974 INFO L87 Difference]: Start difference. First operand 5966 states and 7194 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:31,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:31,399 INFO L93 Difference]: Finished difference Result 6549 states and 8086 transitions. [2022-01-10 08:21:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:31,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:31,411 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:31,411 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:31,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:31,415 INFO L933 BasicCegarLoop]: 546 mSDtfsCounter, 772 mSDsluCounter, 595 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 799 SdHoareTripleChecker+Valid, 1141 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:31,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [799 Valid, 1141 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:31,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:31,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:31,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2275359210808492) internal successors, (5724), 4808 states have internal predecessors, (5724), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:31,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7187 transitions. [2022-01-10 08:21:31,682 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7187 transitions. Word has length 145 [2022-01-10 08:21:31,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:31,683 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7187 transitions. [2022-01-10 08:21:31,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:31,683 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7187 transitions. [2022-01-10 08:21:31,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:31,687 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:31,687 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] [2022-01-10 08:21:31,697 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 08:21:31,895 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 08:21:31,895 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:31,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:31,895 INFO L85 PathProgramCache]: Analyzing trace with hash 931603896, now seen corresponding path program 1 times [2022-01-10 08:21:31,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:31,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1159440021] [2022-01-10 08:21:31,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:31,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:31,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:31,897 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 08:21:31,898 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 08:21:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:32,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:32,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:32,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:32,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:32,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:32,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1159440021] [2022-01-10 08:21:32,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1159440021] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:32,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:32,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:32,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75699456] [2022-01-10 08:21:32,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:32,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:32,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:32,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:32,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:32,177 INFO L87 Difference]: Start difference. First operand 5966 states and 7187 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:32,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:32,611 INFO L93 Difference]: Finished difference Result 6549 states and 8072 transitions. [2022-01-10 08:21:32,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:32,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:32,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:32,623 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:32,623 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:32,626 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:32,626 INFO L933 BasicCegarLoop]: 543 mSDtfsCounter, 766 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:32,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [793 Valid, 1134 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:32,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:32,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.226034741582672) internal successors, (5717), 4808 states have internal predecessors, (5717), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:32,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7180 transitions. [2022-01-10 08:21:32,848 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7180 transitions. Word has length 145 [2022-01-10 08:21:32,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:32,848 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7180 transitions. [2022-01-10 08:21:32,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:32,848 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7180 transitions. [2022-01-10 08:21:32,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:32,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:32,852 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] [2022-01-10 08:21:32,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Ended with exit code 0 [2022-01-10 08:21:33,060 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 08:21:33,060 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:33,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:33,060 INFO L85 PathProgramCache]: Analyzing trace with hash -422954948, now seen corresponding path program 1 times [2022-01-10 08:21:33,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:33,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [235278851] [2022-01-10 08:21:33,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:33,061 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:33,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:33,062 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 08:21:33,062 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 08:21:33,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:33,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:33,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:33,349 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 08:21:33,349 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:33,349 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:33,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [235278851] [2022-01-10 08:21:33,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [235278851] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:33,349 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:33,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:33,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044968726] [2022-01-10 08:21:33,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:33,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:33,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:33,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:33,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:33,350 INFO L87 Difference]: Start difference. First operand 5966 states and 7180 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:33,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:33,829 INFO L93 Difference]: Finished difference Result 6549 states and 8058 transitions. [2022-01-10 08:21:33,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:33,830 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:33,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:33,837 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:33,837 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:33,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:33,839 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 759 mSDsluCounter, 587 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1127 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:33,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [786 Valid, 1127 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:33,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:34,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:34,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.224533562084495) internal successors, (5710), 4808 states have internal predecessors, (5710), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:34,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7173 transitions. [2022-01-10 08:21:34,042 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7173 transitions. Word has length 145 [2022-01-10 08:21:34,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:34,042 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7173 transitions. [2022-01-10 08:21:34,042 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:34,043 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7173 transitions. [2022-01-10 08:21:34,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:34,047 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:34,047 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:34,057 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 08:21:34,255 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 08:21:34,255 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:34,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:34,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2144957634, now seen corresponding path program 1 times [2022-01-10 08:21:34,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:34,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [857028631] [2022-01-10 08:21:34,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:34,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:34,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:34,257 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 08:21:34,258 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 08:21:34,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:34,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 390 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:34,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:34,540 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 08:21:34,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:34,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:34,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [857028631] [2022-01-10 08:21:34,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [857028631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:34,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:34,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:34,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566344529] [2022-01-10 08:21:34,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:34,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:34,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:34,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:34,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:34,541 INFO L87 Difference]: Start difference. First operand 5966 states and 7173 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:35,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:35,024 INFO L93 Difference]: Finished difference Result 6549 states and 8044 transitions. [2022-01-10 08:21:35,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:21:35,025 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:35,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:35,033 INFO L225 Difference]: With dead ends: 6549 [2022-01-10 08:21:35,033 INFO L226 Difference]: Without dead ends: 5966 [2022-01-10 08:21:35,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:35,035 INFO L933 BasicCegarLoop]: 537 mSDtfsCounter, 753 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:35,035 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [780 Valid, 1120 Invalid, 374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:35,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5966 states. [2022-01-10 08:21:35,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5966 to 5966. [2022-01-10 08:21:35,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5966 states, 4663 states have (on average 1.2230323825863179) internal successors, (5703), 4808 states have internal predecessors, (5703), 609 states have call successors, (609), 489 states have call predecessors, (609), 692 states have return successors, (854), 671 states have call predecessors, (854), 608 states have call successors, (854) [2022-01-10 08:21:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5966 states to 5966 states and 7166 transitions. [2022-01-10 08:21:35,256 INFO L78 Accepts]: Start accepts. Automaton has 5966 states and 7166 transitions. Word has length 145 [2022-01-10 08:21:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:35,256 INFO L470 AbstractCegarLoop]: Abstraction has 5966 states and 7166 transitions. [2022-01-10 08:21:35,256 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 5966 states and 7166 transitions. [2022-01-10 08:21:35,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:35,260 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:35,260 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] [2022-01-10 08:21:35,267 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 08:21:35,460 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 08:21:35,460 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:35,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:35,461 INFO L85 PathProgramCache]: Analyzing trace with hash 1839998778, now seen corresponding path program 1 times [2022-01-10 08:21:35,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:35,461 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1060125667] [2022-01-10 08:21:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:35,461 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:35,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:35,462 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 08:21:35,463 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 08:21:35,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:35,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:35,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:35,748 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 08:21:35,748 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:35,748 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:35,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1060125667] [2022-01-10 08:21:35,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1060125667] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:35,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:35,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:35,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20765443] [2022-01-10 08:21:35,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:35,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:35,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:35,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:35,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:35,749 INFO L87 Difference]: Start difference. First operand 5966 states and 7166 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:36,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:36,388 INFO L93 Difference]: Finished difference Result 6699 states and 8262 transitions. [2022-01-10 08:21:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:36,389 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:36,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:36,398 INFO L225 Difference]: With dead ends: 6699 [2022-01-10 08:21:36,398 INFO L226 Difference]: Without dead ends: 6116 [2022-01-10 08:21:36,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:36,400 INFO L933 BasicCegarLoop]: 534 mSDtfsCounter, 843 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:36,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1112 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:36,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2022-01-10 08:21:36,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 6116. [2022-01-10 08:21:36,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6116 states, 4807 states have (on average 1.2269606823382566) internal successors, (5898), 4952 states have internal predecessors, (5898), 611 states have call successors, (611), 493 states have call predecessors, (611), 696 states have return successors, (856), 673 states have call predecessors, (856), 610 states have call successors, (856) [2022-01-10 08:21:36,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6116 states to 6116 states and 7365 transitions. [2022-01-10 08:21:36,680 INFO L78 Accepts]: Start accepts. Automaton has 6116 states and 7365 transitions. Word has length 145 [2022-01-10 08:21:36,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:36,680 INFO L470 AbstractCegarLoop]: Abstraction has 6116 states and 7365 transitions. [2022-01-10 08:21:36,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:36,680 INFO L276 IsEmpty]: Start isEmpty. Operand 6116 states and 7365 transitions. [2022-01-10 08:21:36,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:36,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:36,683 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] [2022-01-10 08:21:36,699 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 08:21:36,891 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 08:21:36,891 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:36,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:36,892 INFO L85 PathProgramCache]: Analyzing trace with hash 860167102, now seen corresponding path program 1 times [2022-01-10 08:21:36,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:36,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1610276072] [2022-01-10 08:21:36,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:36,892 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:36,892 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:36,893 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 08:21:36,894 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 08:21:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:36,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 386 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:36,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:37,154 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 08:21:37,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:37,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:37,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1610276072] [2022-01-10 08:21:37,155 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1610276072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:37,155 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:37,155 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:37,155 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645103690] [2022-01-10 08:21:37,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:37,155 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:37,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:37,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:37,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:37,156 INFO L87 Difference]: Start difference. First operand 6116 states and 7365 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:37,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:37,770 INFO L93 Difference]: Finished difference Result 6999 states and 8660 transitions. [2022-01-10 08:21:37,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:37,770 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:37,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:37,782 INFO L225 Difference]: With dead ends: 6999 [2022-01-10 08:21:37,782 INFO L226 Difference]: Without dead ends: 6266 [2022-01-10 08:21:37,786 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:37,787 INFO L933 BasicCegarLoop]: 532 mSDtfsCounter, 836 mSDsluCounter, 574 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:37,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [863 Valid, 1106 Invalid, 488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:37,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6266 states. [2022-01-10 08:21:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6266 to 6266. [2022-01-10 08:21:38,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6266 states, 4951 states have (on average 1.229852555039386) internal successors, (6089), 5096 states have internal predecessors, (6089), 613 states have call successors, (613), 497 states have call predecessors, (613), 700 states have return successors, (858), 675 states have call predecessors, (858), 612 states have call successors, (858) [2022-01-10 08:21:38,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6266 states to 6266 states and 7560 transitions. [2022-01-10 08:21:38,090 INFO L78 Accepts]: Start accepts. Automaton has 6266 states and 7560 transitions. Word has length 145 [2022-01-10 08:21:38,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:38,090 INFO L470 AbstractCegarLoop]: Abstraction has 6266 states and 7560 transitions. [2022-01-10 08:21:38,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:38,090 INFO L276 IsEmpty]: Start isEmpty. Operand 6266 states and 7560 transitions. [2022-01-10 08:21:38,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:38,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:38,093 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] [2022-01-10 08:21:38,112 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 08:21:38,301 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 08:21:38,301 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:38,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:38,302 INFO L85 PathProgramCache]: Analyzing trace with hash -2069463493, now seen corresponding path program 1 times [2022-01-10 08:21:38,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:38,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [251555353] [2022-01-10 08:21:38,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:38,302 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:38,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:38,304 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 08:21:38,304 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 08:21:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:38,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 383 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:38,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:38,561 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 08:21:38,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:38,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:38,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [251555353] [2022-01-10 08:21:38,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [251555353] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:38,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:38,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:38,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951311422] [2022-01-10 08:21:38,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:38,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:38,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:38,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:38,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:38,563 INFO L87 Difference]: Start difference. First operand 6266 states and 7560 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:39,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:39,212 INFO L93 Difference]: Finished difference Result 7299 states and 9050 transitions. [2022-01-10 08:21:39,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:39,213 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:39,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:39,224 INFO L225 Difference]: With dead ends: 7299 [2022-01-10 08:21:39,224 INFO L226 Difference]: Without dead ends: 6416 [2022-01-10 08:21:39,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:39,228 INFO L933 BasicCegarLoop]: 527 mSDtfsCounter, 830 mSDsluCounter, 570 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:39,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 1097 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:39,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6416 states. [2022-01-10 08:21:39,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6416 to 6416. [2022-01-10 08:21:39,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6416 states, 5095 states have (on average 1.2317958783120706) internal successors, (6276), 5240 states have internal predecessors, (6276), 615 states have call successors, (615), 501 states have call predecessors, (615), 704 states have return successors, (860), 677 states have call predecessors, (860), 614 states have call successors, (860) [2022-01-10 08:21:39,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6416 states to 6416 states and 7751 transitions. [2022-01-10 08:21:39,508 INFO L78 Accepts]: Start accepts. Automaton has 6416 states and 7751 transitions. Word has length 145 [2022-01-10 08:21:39,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:39,508 INFO L470 AbstractCegarLoop]: Abstraction has 6416 states and 7751 transitions. [2022-01-10 08:21:39,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:39,508 INFO L276 IsEmpty]: Start isEmpty. Operand 6416 states and 7751 transitions. [2022-01-10 08:21:39,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:39,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:39,511 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:39,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:39,719 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 08:21:39,719 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:39,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:39,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1580909503, now seen corresponding path program 1 times [2022-01-10 08:21:39,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:39,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440300566] [2022-01-10 08:21:39,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:39,720 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:39,720 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:39,721 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 08:21:39,722 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 08:21:39,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:39,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:39,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:39,995 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 08:21:39,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:39,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:39,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440300566] [2022-01-10 08:21:39,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440300566] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:39,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:39,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:39,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367262726] [2022-01-10 08:21:39,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:39,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:39,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:39,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:39,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:39,996 INFO L87 Difference]: Start difference. First operand 6416 states and 7751 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:40,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:40,677 INFO L93 Difference]: Finished difference Result 7599 states and 9432 transitions. [2022-01-10 08:21:40,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:40,678 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:40,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:40,689 INFO L225 Difference]: With dead ends: 7599 [2022-01-10 08:21:40,689 INFO L226 Difference]: Without dead ends: 6566 [2022-01-10 08:21:40,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:40,693 INFO L933 BasicCegarLoop]: 524 mSDtfsCounter, 823 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 1090 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:40,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 1090 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:40,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6566 states. [2022-01-10 08:21:40,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6566 to 6566. [2022-01-10 08:21:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6566 states, 5239 states have (on average 1.2328688681046) internal successors, (6459), 5384 states have internal predecessors, (6459), 617 states have call successors, (617), 505 states have call predecessors, (617), 708 states have return successors, (862), 679 states have call predecessors, (862), 616 states have call successors, (862) [2022-01-10 08:21:40,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6566 states to 6566 states and 7938 transitions. [2022-01-10 08:21:40,989 INFO L78 Accepts]: Start accepts. Automaton has 6566 states and 7938 transitions. Word has length 145 [2022-01-10 08:21:40,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:40,989 INFO L470 AbstractCegarLoop]: Abstraction has 6566 states and 7938 transitions. [2022-01-10 08:21:40,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:40,989 INFO L276 IsEmpty]: Start isEmpty. Operand 6566 states and 7938 transitions. [2022-01-10 08:21:40,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:40,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:40,992 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] [2022-01-10 08:21:41,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:41,200 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 08:21:41,200 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:41,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:41,201 INFO L85 PathProgramCache]: Analyzing trace with hash 714157756, now seen corresponding path program 1 times [2022-01-10 08:21:41,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:41,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1264928738] [2022-01-10 08:21:41,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:41,201 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:41,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:41,202 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 08:21:41,202 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 08:21:41,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:41,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 378 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:41,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:41,454 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 08:21:41,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:41,454 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:41,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1264928738] [2022-01-10 08:21:41,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1264928738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:41,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:41,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:41,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917418884] [2022-01-10 08:21:41,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:41,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:41,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:41,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:41,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:41,455 INFO L87 Difference]: Start difference. First operand 6566 states and 7938 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:42,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:42,151 INFO L93 Difference]: Finished difference Result 7899 states and 9806 transitions. [2022-01-10 08:21:42,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:42,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:42,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:42,165 INFO L225 Difference]: With dead ends: 7899 [2022-01-10 08:21:42,166 INFO L226 Difference]: Without dead ends: 6716 [2022-01-10 08:21:42,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:42,170 INFO L933 BasicCegarLoop]: 521 mSDtfsCounter, 816 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:42,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [843 Valid, 1083 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6716 states. [2022-01-10 08:21:42,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6716 to 6716. [2022-01-10 08:21:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6716 states, 5383 states have (on average 1.2331413709827235) internal successors, (6638), 5528 states have internal predecessors, (6638), 619 states have call successors, (619), 509 states have call predecessors, (619), 712 states have return successors, (864), 681 states have call predecessors, (864), 618 states have call successors, (864) [2022-01-10 08:21:42,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6716 states to 6716 states and 8121 transitions. [2022-01-10 08:21:42,463 INFO L78 Accepts]: Start accepts. Automaton has 6716 states and 8121 transitions. Word has length 145 [2022-01-10 08:21:42,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:42,463 INFO L470 AbstractCegarLoop]: Abstraction has 6716 states and 8121 transitions. [2022-01-10 08:21:42,463 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:42,463 INFO L276 IsEmpty]: Start isEmpty. Operand 6716 states and 8121 transitions. [2022-01-10 08:21:42,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:42,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:42,466 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] [2022-01-10 08:21:42,474 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 08:21:42,669 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 08:21:42,669 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:42,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:42,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1659996929, now seen corresponding path program 1 times [2022-01-10 08:21:42,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:42,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [117267464] [2022-01-10 08:21:42,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:42,670 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:42,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:42,670 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 08:21:42,672 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 08:21:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:42,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 375 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:42,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:42,953 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 08:21:42,954 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:42,954 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [117267464] [2022-01-10 08:21:42,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [117267464] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:42,954 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:42,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:42,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595943839] [2022-01-10 08:21:42,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:42,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:42,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:42,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:42,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:42,955 INFO L87 Difference]: Start difference. First operand 6716 states and 8121 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:43,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:43,623 INFO L93 Difference]: Finished difference Result 8199 states and 10172 transitions. [2022-01-10 08:21:43,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:43,623 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:43,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:43,635 INFO L225 Difference]: With dead ends: 8199 [2022-01-10 08:21:43,635 INFO L226 Difference]: Without dead ends: 6866 [2022-01-10 08:21:43,638 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:43,638 INFO L933 BasicCegarLoop]: 518 mSDtfsCounter, 808 mSDsluCounter, 558 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 1076 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:43,638 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [835 Valid, 1076 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:43,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6866 states. [2022-01-10 08:21:43,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6866 to 6866. [2022-01-10 08:21:43,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6866 states, 5527 states have (on average 1.232675954405645) internal successors, (6813), 5672 states have internal predecessors, (6813), 621 states have call successors, (621), 513 states have call predecessors, (621), 716 states have return successors, (866), 683 states have call predecessors, (866), 620 states have call successors, (866) [2022-01-10 08:21:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6866 states to 6866 states and 8300 transitions. [2022-01-10 08:21:43,969 INFO L78 Accepts]: Start accepts. Automaton has 6866 states and 8300 transitions. Word has length 145 [2022-01-10 08:21:43,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:43,970 INFO L470 AbstractCegarLoop]: Abstraction has 6866 states and 8300 transitions. [2022-01-10 08:21:43,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:43,970 INFO L276 IsEmpty]: Start isEmpty. Operand 6866 states and 8300 transitions. [2022-01-10 08:21:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:43,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:43,973 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] [2022-01-10 08:21:43,980 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 08:21:44,179 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 08:21:44,180 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:44,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:44,180 INFO L85 PathProgramCache]: Analyzing trace with hash 999055172, now seen corresponding path program 1 times [2022-01-10 08:21:44,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:44,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [731129385] [2022-01-10 08:21:44,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:44,181 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:44,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:44,182 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 08:21:44,183 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 08:21:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:44,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 373 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:44,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:44,475 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 08:21:44,475 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:44,475 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:44,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [731129385] [2022-01-10 08:21:44,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [731129385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:44,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:44,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:44,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34932315] [2022-01-10 08:21:44,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:44,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:44,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:44,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:44,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:44,476 INFO L87 Difference]: Start difference. First operand 6866 states and 8300 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:45,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:45,158 INFO L93 Difference]: Finished difference Result 8499 states and 10530 transitions. [2022-01-10 08:21:45,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:45,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:45,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:45,169 INFO L225 Difference]: With dead ends: 8499 [2022-01-10 08:21:45,170 INFO L226 Difference]: Without dead ends: 7016 [2022-01-10 08:21:45,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:45,173 INFO L933 BasicCegarLoop]: 515 mSDtfsCounter, 801 mSDsluCounter, 554 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 1069 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:45,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 1069 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 428 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:45,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7016 states. [2022-01-10 08:21:45,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7016 to 7016. [2022-01-10 08:21:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7016 states, 5671 states have (on average 1.2315288308940222) internal successors, (6984), 5816 states have internal predecessors, (6984), 623 states have call successors, (623), 517 states have call predecessors, (623), 720 states have return successors, (868), 685 states have call predecessors, (868), 622 states have call successors, (868) [2022-01-10 08:21:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7016 states to 7016 states and 8475 transitions. [2022-01-10 08:21:45,532 INFO L78 Accepts]: Start accepts. Automaton has 7016 states and 8475 transitions. Word has length 145 [2022-01-10 08:21:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:45,532 INFO L470 AbstractCegarLoop]: Abstraction has 7016 states and 8475 transitions. [2022-01-10 08:21:45,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 7016 states and 8475 transitions. [2022-01-10 08:21:45,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:45,535 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:45,535 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] [2022-01-10 08:21:45,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-01-10 08:21:45,739 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 08:21:45,739 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:45,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:45,739 INFO L85 PathProgramCache]: Analyzing trace with hash -755255488, now seen corresponding path program 1 times [2022-01-10 08:21:45,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:45,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1677669323] [2022-01-10 08:21:45,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:45,740 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:45,740 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:45,741 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 08:21:45,741 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 08:21:45,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:45,834 INFO L263 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:45,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:45,990 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 08:21:45,990 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:45,990 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:45,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1677669323] [2022-01-10 08:21:45,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1677669323] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:45,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:45,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:45,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955062324] [2022-01-10 08:21:45,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:45,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:45,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:45,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:45,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:45,992 INFO L87 Difference]: Start difference. First operand 7016 states and 8475 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:46,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:46,703 INFO L93 Difference]: Finished difference Result 8799 states and 10880 transitions. [2022-01-10 08:21:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:46,704 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:46,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:46,716 INFO L225 Difference]: With dead ends: 8799 [2022-01-10 08:21:46,716 INFO L226 Difference]: Without dead ends: 7166 [2022-01-10 08:21:46,721 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:46,722 INFO L933 BasicCegarLoop]: 512 mSDtfsCounter, 794 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 821 SdHoareTripleChecker+Valid, 1062 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:46,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [821 Valid, 1062 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:21:46,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7166 states. [2022-01-10 08:21:47,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7166 to 7166. [2022-01-10 08:21:47,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7166 states, 5815 states have (on average 1.2297506448839208) internal successors, (7151), 5960 states have internal predecessors, (7151), 625 states have call successors, (625), 521 states have call predecessors, (625), 724 states have return successors, (870), 687 states have call predecessors, (870), 624 states have call successors, (870) [2022-01-10 08:21:47,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7166 states to 7166 states and 8646 transitions. [2022-01-10 08:21:47,071 INFO L78 Accepts]: Start accepts. Automaton has 7166 states and 8646 transitions. Word has length 145 [2022-01-10 08:21:47,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:47,071 INFO L470 AbstractCegarLoop]: Abstraction has 7166 states and 8646 transitions. [2022-01-10 08:21:47,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:47,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7166 states and 8646 transitions. [2022-01-10 08:21:47,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:47,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:47,074 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] [2022-01-10 08:21:47,082 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 08:21:47,275 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 08:21:47,275 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:47,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:47,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1546774661, now seen corresponding path program 1 times [2022-01-10 08:21:47,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:47,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [973560004] [2022-01-10 08:21:47,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:47,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:47,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:47,277 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 08:21:47,277 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 08:21:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:47,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:47,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:47,526 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 08:21:47,526 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:47,526 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:47,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [973560004] [2022-01-10 08:21:47,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [973560004] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:47,527 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:47,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:47,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328925175] [2022-01-10 08:21:47,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:47,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:47,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:47,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:47,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:47,528 INFO L87 Difference]: Start difference. First operand 7166 states and 8646 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:48,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:48,250 INFO L93 Difference]: Finished difference Result 9099 states and 11222 transitions. [2022-01-10 08:21:48,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:48,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:48,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:48,261 INFO L225 Difference]: With dead ends: 9099 [2022-01-10 08:21:48,261 INFO L226 Difference]: Without dead ends: 7316 [2022-01-10 08:21:48,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:21:48,264 INFO L933 BasicCegarLoop]: 509 mSDtfsCounter, 787 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1055 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:48,264 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [814 Valid, 1055 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:48,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7316 states. [2022-01-10 08:21:48,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7316 to 7316. [2022-01-10 08:21:48,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7316 states, 5959 states have (on average 1.2273871454942105) internal successors, (7314), 6104 states have internal predecessors, (7314), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:48,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7316 states to 7316 states and 8813 transitions. [2022-01-10 08:21:48,652 INFO L78 Accepts]: Start accepts. Automaton has 7316 states and 8813 transitions. Word has length 145 [2022-01-10 08:21:48,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:48,652 INFO L470 AbstractCegarLoop]: Abstraction has 7316 states and 8813 transitions. [2022-01-10 08:21:48,652 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 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 08:21:48,652 INFO L276 IsEmpty]: Start isEmpty. Operand 7316 states and 8813 transitions. [2022-01-10 08:21:48,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:48,655 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:48,655 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] [2022-01-10 08:21:48,664 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:48,855 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 08:21:48,855 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:48,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:48,856 INFO L85 PathProgramCache]: Analyzing trace with hash 105844609, now seen corresponding path program 1 times [2022-01-10 08:21:48,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:48,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [239430727] [2022-01-10 08:21:48,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:48,856 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:48,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:48,857 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 08:21:48,859 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 08:21:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:48,952 INFO L263 TraceCheckSpWp]: Trace formula consists of 366 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:49,093 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 08:21:49,094 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:49,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:49,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [239430727] [2022-01-10 08:21:49,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [239430727] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:49,094 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:49,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:49,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592609272] [2022-01-10 08:21:49,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:49,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:49,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:49,095 INFO L87 Difference]: Start difference. First operand 7316 states and 8813 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:49,523 INFO L93 Difference]: Finished difference Result 9514 states and 11703 transitions. [2022-01-10 08:21:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:49,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:49,536 INFO L225 Difference]: With dead ends: 9514 [2022-01-10 08:21:49,536 INFO L226 Difference]: Without dead ends: 7582 [2022-01-10 08:21:49,540 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:49,541 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 362 mSDsluCounter, 1774 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2319 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 08:21:49,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2319 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:49,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7582 states. [2022-01-10 08:21:49,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7582 to 7322. [2022-01-10 08:21:49,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7322 states, 5965 states have (on average 1.2241408214585079) internal successors, (7302), 6110 states have internal predecessors, (7302), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:49,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7322 states to 7322 states and 8801 transitions. [2022-01-10 08:21:49,939 INFO L78 Accepts]: Start accepts. Automaton has 7322 states and 8801 transitions. Word has length 145 [2022-01-10 08:21:49,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:49,939 INFO L470 AbstractCegarLoop]: Abstraction has 7322 states and 8801 transitions. [2022-01-10 08:21:49,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:49,939 INFO L276 IsEmpty]: Start isEmpty. Operand 7322 states and 8801 transitions. [2022-01-10 08:21:49,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:49,942 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:49,942 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] [2022-01-10 08:21:49,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:50,142 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 08:21:50,143 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:50,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:50,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1706915715, now seen corresponding path program 1 times [2022-01-10 08:21:50,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:50,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [875565119] [2022-01-10 08:21:50,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:50,144 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:50,144 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:50,144 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 08:21:50,145 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 08:21:50,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:50,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:50,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:50,383 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 08:21:50,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:50,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:50,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [875565119] [2022-01-10 08:21:50,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [875565119] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:50,384 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:50,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:50,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906450727] [2022-01-10 08:21:50,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:50,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:50,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:50,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:50,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:50,384 INFO L87 Difference]: Start difference. First operand 7322 states and 8801 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:50,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:50,769 INFO L93 Difference]: Finished difference Result 9498 states and 11643 transitions. [2022-01-10 08:21:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:50,769 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:50,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:50,784 INFO L225 Difference]: With dead ends: 9498 [2022-01-10 08:21:50,784 INFO L226 Difference]: Without dead ends: 7560 [2022-01-10 08:21:50,788 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:50,789 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 323 mSDsluCounter, 1765 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 323 SdHoareTripleChecker+Valid, 2312 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 08:21:50,789 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [323 Valid, 2312 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:50,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7560 states. [2022-01-10 08:21:51,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7560 to 7328. [2022-01-10 08:21:51,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7328 states, 5971 states have (on average 1.2209010216044214) internal successors, (7290), 6116 states have internal predecessors, (7290), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:51,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7328 states to 7328 states and 8789 transitions. [2022-01-10 08:21:51,216 INFO L78 Accepts]: Start accepts. Automaton has 7328 states and 8789 transitions. Word has length 145 [2022-01-10 08:21:51,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:51,216 INFO L470 AbstractCegarLoop]: Abstraction has 7328 states and 8789 transitions. [2022-01-10 08:21:51,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:51,216 INFO L276 IsEmpty]: Start isEmpty. Operand 7328 states and 8789 transitions. [2022-01-10 08:21:51,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:51,219 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:51,219 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] [2022-01-10 08:21:51,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:51,419 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 08:21:51,419 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:51,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:51,420 INFO L85 PathProgramCache]: Analyzing trace with hash -233666299, now seen corresponding path program 1 times [2022-01-10 08:21:51,420 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:51,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1713347745] [2022-01-10 08:21:51,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:51,420 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:51,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:51,421 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 08:21:51,421 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 08:21:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:51,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:51,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:51,683 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 08:21:51,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:51,683 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:51,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1713347745] [2022-01-10 08:21:51,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1713347745] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:51,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:51,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:51,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668212684] [2022-01-10 08:21:51,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:51,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:51,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:51,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:51,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:51,684 INFO L87 Difference]: Start difference. First operand 7328 states and 8789 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:52,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:52,061 INFO L93 Difference]: Finished difference Result 9482 states and 11583 transitions. [2022-01-10 08:21:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:52,061 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:52,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:52,074 INFO L225 Difference]: With dead ends: 9482 [2022-01-10 08:21:52,074 INFO L226 Difference]: Without dead ends: 7538 [2022-01-10 08:21:52,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:52,078 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 284 mSDsluCounter, 1744 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2289 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 08:21:52,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2289 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:52,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7538 states. [2022-01-10 08:21:52,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7538 to 7334. [2022-01-10 08:21:52,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7334 states, 5977 states have (on average 1.217667726284089) internal successors, (7278), 6122 states have internal predecessors, (7278), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:52,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7334 states to 7334 states and 8777 transitions. [2022-01-10 08:21:52,497 INFO L78 Accepts]: Start accepts. Automaton has 7334 states and 8777 transitions. Word has length 145 [2022-01-10 08:21:52,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:52,497 INFO L470 AbstractCegarLoop]: Abstraction has 7334 states and 8777 transitions. [2022-01-10 08:21:52,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:52,497 INFO L276 IsEmpty]: Start isEmpty. Operand 7334 states and 8777 transitions. [2022-01-10 08:21:52,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:52,500 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:52,500 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] [2022-01-10 08:21:52,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Ended with exit code 0 [2022-01-10 08:21:52,700 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 08:21:52,701 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1642816519, now seen corresponding path program 1 times [2022-01-10 08:21:52,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:52,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406430696] [2022-01-10 08:21:52,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:52,702 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:52,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:52,702 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 08:21:52,703 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 08:21:52,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:52,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:52,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:52,934 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 08:21:52,934 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:52,934 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:52,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406430696] [2022-01-10 08:21:52,934 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406430696] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:52,934 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:52,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:52,934 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194504097] [2022-01-10 08:21:52,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:52,935 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:52,935 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:52,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:52,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:52,935 INFO L87 Difference]: Start difference. First operand 7334 states and 8777 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:53,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:53,359 INFO L93 Difference]: Finished difference Result 9466 states and 11523 transitions. [2022-01-10 08:21:53,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:53,360 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:53,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:53,369 INFO L225 Difference]: With dead ends: 9466 [2022-01-10 08:21:53,369 INFO L226 Difference]: Without dead ends: 7516 [2022-01-10 08:21:53,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:53,372 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 245 mSDsluCounter, 1729 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 2274 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 08:21:53,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 2274 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:53,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2022-01-10 08:21:53,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7340. [2022-01-10 08:21:53,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7340 states, 5983 states have (on average 1.214440915928464) internal successors, (7266), 6128 states have internal predecessors, (7266), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7340 states to 7340 states and 8765 transitions. [2022-01-10 08:21:53,768 INFO L78 Accepts]: Start accepts. Automaton has 7340 states and 8765 transitions. Word has length 145 [2022-01-10 08:21:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:53,768 INFO L470 AbstractCegarLoop]: Abstraction has 7340 states and 8765 transitions. [2022-01-10 08:21:53,768 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 7340 states and 8765 transitions. [2022-01-10 08:21:53,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:53,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:53,771 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] [2022-01-10 08:21:53,779 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 08:21:53,972 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 08:21:53,972 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:53,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:53,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1883056265, now seen corresponding path program 1 times [2022-01-10 08:21:53,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:53,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804472848] [2022-01-10 08:21:53,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:53,973 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:53,974 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 08:21:53,974 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 08:21:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:54,068 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:54,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:54,212 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 08:21:54,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:54,213 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:54,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [804472848] [2022-01-10 08:21:54,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [804472848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:54,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:54,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:54,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033424524] [2022-01-10 08:21:54,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:54,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:54,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:54,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:54,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:54,215 INFO L87 Difference]: Start difference. First operand 7340 states and 8765 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:54,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:54,620 INFO L93 Difference]: Finished difference Result 9450 states and 11463 transitions. [2022-01-10 08:21:54,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:54,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:54,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:54,631 INFO L225 Difference]: With dead ends: 9450 [2022-01-10 08:21:54,631 INFO L226 Difference]: Without dead ends: 7494 [2022-01-10 08:21:54,634 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:54,634 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 206 mSDsluCounter, 1714 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 2259 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 08:21:54,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 2259 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:54,638 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7494 states. [2022-01-10 08:21:55,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7494 to 7346. [2022-01-10 08:21:55,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7346 states, 5989 states have (on average 1.2112205710469193) internal successors, (7254), 6134 states have internal predecessors, (7254), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:55,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7346 states to 7346 states and 8753 transitions. [2022-01-10 08:21:55,037 INFO L78 Accepts]: Start accepts. Automaton has 7346 states and 8753 transitions. Word has length 145 [2022-01-10 08:21:55,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:55,037 INFO L470 AbstractCegarLoop]: Abstraction has 7346 states and 8753 transitions. [2022-01-10 08:21:55,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:55,037 INFO L276 IsEmpty]: Start isEmpty. Operand 7346 states and 8753 transitions. [2022-01-10 08:21:55,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:55,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:55,041 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] [2022-01-10 08:21:55,048 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 08:21:55,242 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 08:21:55,242 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:55,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:55,242 INFO L85 PathProgramCache]: Analyzing trace with hash -27986293, now seen corresponding path program 1 times [2022-01-10 08:21:55,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:55,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36640448] [2022-01-10 08:21:55,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:55,243 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:55,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:55,245 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 08:21:55,246 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 08:21:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:55,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:55,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:55,500 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 08:21:55,501 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:55,501 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:55,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36640448] [2022-01-10 08:21:55,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36640448] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:55,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:55,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:55,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085927075] [2022-01-10 08:21:55,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:55,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:55,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:55,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:55,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:55,502 INFO L87 Difference]: Start difference. First operand 7346 states and 8753 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:55,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:55,881 INFO L93 Difference]: Finished difference Result 9406 states and 11363 transitions. [2022-01-10 08:21:55,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:55,882 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:55,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:55,894 INFO L225 Difference]: With dead ends: 9406 [2022-01-10 08:21:55,894 INFO L226 Difference]: Without dead ends: 7444 [2022-01-10 08:21:55,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:55,898 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 127 mSDsluCounter, 1679 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2224 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 08:21:55,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2224 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:55,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7444 states. [2022-01-10 08:21:56,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7444 to 7352. [2022-01-10 08:21:56,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7352 states, 5995 states have (on average 1.2080066722268556) internal successors, (7242), 6140 states have internal predecessors, (7242), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7352 states to 7352 states and 8741 transitions. [2022-01-10 08:21:56,343 INFO L78 Accepts]: Start accepts. Automaton has 7352 states and 8741 transitions. Word has length 145 [2022-01-10 08:21:56,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:56,344 INFO L470 AbstractCegarLoop]: Abstraction has 7352 states and 8741 transitions. [2022-01-10 08:21:56,344 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:56,344 INFO L276 IsEmpty]: Start isEmpty. Operand 7352 states and 8741 transitions. [2022-01-10 08:21:56,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:56,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:56,346 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] [2022-01-10 08:21:56,354 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 08:21:56,547 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 08:21:56,548 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:56,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1933588365, now seen corresponding path program 1 times [2022-01-10 08:21:56,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:56,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1783021886] [2022-01-10 08:21:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:56,548 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:56,549 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:56,549 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 08:21:56,551 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 08:21:56,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:56,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:56,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:56,783 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 08:21:56,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:56,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:56,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1783021886] [2022-01-10 08:21:56,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1783021886] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:56,784 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:56,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:56,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844292292] [2022-01-10 08:21:56,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:56,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:56,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:56,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:56,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:56,785 INFO L87 Difference]: Start difference. First operand 7352 states and 8741 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:57,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:57,179 INFO L93 Difference]: Finished difference Result 9390 states and 11303 transitions. [2022-01-10 08:21:57,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:57,180 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:57,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:57,192 INFO L225 Difference]: With dead ends: 9390 [2022-01-10 08:21:57,192 INFO L226 Difference]: Without dead ends: 7422 [2022-01-10 08:21:57,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:57,195 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 88 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2209 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 08:21:57,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2209 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:57,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7422 states. [2022-01-10 08:21:57,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7422 to 7358. [2022-01-10 08:21:57,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7358 states, 6001 states have (on average 1.2047992001333112) internal successors, (7230), 6146 states have internal predecessors, (7230), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:57,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7358 states to 7358 states and 8729 transitions. [2022-01-10 08:21:57,708 INFO L78 Accepts]: Start accepts. Automaton has 7358 states and 8729 transitions. Word has length 145 [2022-01-10 08:21:57,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:57,708 INFO L470 AbstractCegarLoop]: Abstraction has 7358 states and 8729 transitions. [2022-01-10 08:21:57,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:57,708 INFO L276 IsEmpty]: Start isEmpty. Operand 7358 states and 8729 transitions. [2022-01-10 08:21:57,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:57,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:57,711 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] [2022-01-10 08:21:57,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Forceful destruction successful, exit code 0 [2022-01-10 08:21:57,912 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 08:21:57,912 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:57,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:57,912 INFO L85 PathProgramCache]: Analyzing trace with hash -974593521, now seen corresponding path program 1 times [2022-01-10 08:21:57,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:57,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [120614269] [2022-01-10 08:21:57,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:57,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:57,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:57,914 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 08:21:57,915 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 08:21:58,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:58,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:58,015 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:58,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:58,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:58,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [120614269] [2022-01-10 08:21:58,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [120614269] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:58,175 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:58,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:58,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114861676] [2022-01-10 08:21:58,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:58,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:58,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:58,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:58,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:58,176 INFO L87 Difference]: Start difference. First operand 7358 states and 8729 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:58,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:58,621 INFO L93 Difference]: Finished difference Result 9374 states and 11243 transitions. [2022-01-10 08:21:58,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:58,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:58,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:58,633 INFO L225 Difference]: With dead ends: 9374 [2022-01-10 08:21:58,633 INFO L226 Difference]: Without dead ends: 7400 [2022-01-10 08:21:58,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:58,636 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 49 mSDsluCounter, 1649 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2194 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 08:21:58,637 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 2194 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:58,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7400 states. [2022-01-10 08:21:59,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7400 to 7364. [2022-01-10 08:21:59,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7364 states, 6007 states have (on average 1.2015981355085734) internal successors, (7218), 6152 states have internal predecessors, (7218), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:21:59,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7364 states to 7364 states and 8717 transitions. [2022-01-10 08:21:59,071 INFO L78 Accepts]: Start accepts. Automaton has 7364 states and 8717 transitions. Word has length 145 [2022-01-10 08:21:59,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:59,071 INFO L470 AbstractCegarLoop]: Abstraction has 7364 states and 8717 transitions. [2022-01-10 08:21:59,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:59,072 INFO L276 IsEmpty]: Start isEmpty. Operand 7364 states and 8717 transitions. [2022-01-10 08:21:59,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:21:59,074 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:59,074 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] [2022-01-10 08:21:59,082 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-01-10 08:21:59,274 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:21:59,275 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:59,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:59,275 INFO L85 PathProgramCache]: Analyzing trace with hash -990112239, now seen corresponding path program 1 times [2022-01-10 08:21:59,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:59,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1407245562] [2022-01-10 08:21:59,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:59,276 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:59,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:59,276 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:21:59,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 08:21:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:59,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:59,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:59,518 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 08:21:59,518 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:59,518 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:59,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1407245562] [2022-01-10 08:21:59,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1407245562] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:59,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:59,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:59,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672403348] [2022-01-10 08:21:59,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:59,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:59,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:59,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:59,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:59,520 INFO L87 Difference]: Start difference. First operand 7364 states and 8717 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:21:59,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:59,944 INFO L93 Difference]: Finished difference Result 9358 states and 11183 transitions. [2022-01-10 08:21:59,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:59,945 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 145 [2022-01-10 08:21:59,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:59,956 INFO L225 Difference]: With dead ends: 9358 [2022-01-10 08:21:59,956 INFO L226 Difference]: Without dead ends: 7378 [2022-01-10 08:21:59,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 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 08:21:59,959 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 10 mSDsluCounter, 1634 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2179 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 08:21:59,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2179 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:59,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7378 states. [2022-01-10 08:22:00,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7378 to 7370. [2022-01-10 08:22:00,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 6013 states have (on average 1.1984034591717945) internal successors, (7206), 6158 states have internal predecessors, (7206), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:22:00,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 8705 transitions. [2022-01-10 08:22:00,381 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 8705 transitions. Word has length 145 [2022-01-10 08:22:00,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:00,381 INFO L470 AbstractCegarLoop]: Abstraction has 7370 states and 8705 transitions. [2022-01-10 08:22:00,381 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 5 states have internal predecessors, (135), 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 08:22:00,381 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 8705 transitions. [2022-01-10 08:22:00,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:22:00,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:00,384 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] [2022-01-10 08:22:00,391 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 08:22:00,584 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:00,584 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:00,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:00,585 INFO L85 PathProgramCache]: Analyzing trace with hash -1887505517, now seen corresponding path program 1 times [2022-01-10 08:22:00,585 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:00,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2146230174] [2022-01-10 08:22:00,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:00,585 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:00,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:00,586 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 08:22:00,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:00,681 INFO L263 TraceCheckSpWp]: Trace formula consists of 357 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:22:00,683 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:00,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:00,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:00,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:00,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2146230174] [2022-01-10 08:22:00,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2146230174] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:00,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:00,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:00,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767282232] [2022-01-10 08:22:00,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:00,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:00,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:00,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:00,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:00,880 INFO L87 Difference]: Start difference. First operand 7370 states and 8705 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:01,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:01,574 INFO L93 Difference]: Finished difference Result 9357 states and 11108 transitions. [2022-01-10 08:22:01,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:01,575 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 08:22:01,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:01,587 INFO L225 Difference]: With dead ends: 9357 [2022-01-10 08:22:01,588 INFO L226 Difference]: Without dead ends: 7370 [2022-01-10 08:22:01,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 141 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 08:22:01,591 INFO L933 BasicCegarLoop]: 507 mSDtfsCounter, 622 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:01,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 1050 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:01,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7370 states. [2022-01-10 08:22:01,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7370 to 7370. [2022-01-10 08:22:01,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7370 states, 6013 states have (on average 1.1972393148178946) internal successors, (7199), 6158 states have internal predecessors, (7199), 627 states have call successors, (627), 525 states have call predecessors, (627), 728 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:22:02,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7370 states to 7370 states and 8698 transitions. [2022-01-10 08:22:02,008 INFO L78 Accepts]: Start accepts. Automaton has 7370 states and 8698 transitions. Word has length 145 [2022-01-10 08:22:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:02,009 INFO L470 AbstractCegarLoop]: Abstraction has 7370 states and 8698 transitions. [2022-01-10 08:22:02,009 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:02,009 INFO L276 IsEmpty]: Start isEmpty. Operand 7370 states and 8698 transitions. [2022-01-10 08:22:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:22:02,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:02,011 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] [2022-01-10 08:22:02,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:02,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:02,212 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:02,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:02,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1612745903, now seen corresponding path program 1 times [2022-01-10 08:22:02,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:02,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [776183940] [2022-01-10 08:22:02,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:02,213 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:02,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:02,214 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:02,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 08:22:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:02,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:22:02,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:02,509 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 08:22:02,509 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:02,509 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:02,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [776183940] [2022-01-10 08:22:02,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [776183940] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:02,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:02,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:02,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279742449] [2022-01-10 08:22:02,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:02,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:02,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:02,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:02,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:02,510 INFO L87 Difference]: Start difference. First operand 7370 states and 8698 transitions. Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:03,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:03,332 INFO L93 Difference]: Finished difference Result 9571 states and 11380 transitions. [2022-01-10 08:22:03,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:03,332 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 145 [2022-01-10 08:22:03,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:03,344 INFO L225 Difference]: With dead ends: 9571 [2022-01-10 08:22:03,344 INFO L226 Difference]: Without dead ends: 7584 [2022-01-10 08:22:03,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:22:03,347 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 726 mSDsluCounter, 538 mSDsCounter, 0 mSdLazyCounter, 458 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 752 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:03,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [752 Valid, 1080 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 458 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:03,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7584 states. [2022-01-10 08:22:03,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7584 to 7514. [2022-01-10 08:22:03,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 6155 states have (on average 1.1922014622258326) internal successors, (7338), 6300 states have internal predecessors, (7338), 627 states have call successors, (627), 527 states have call predecessors, (627), 730 states have return successors, (872), 689 states have call predecessors, (872), 626 states have call successors, (872) [2022-01-10 08:22:03,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 8837 transitions. [2022-01-10 08:22:03,836 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 8837 transitions. Word has length 145 [2022-01-10 08:22:03,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:03,837 INFO L470 AbstractCegarLoop]: Abstraction has 7514 states and 8837 transitions. [2022-01-10 08:22:03,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (5), 3 states have call predecessors, (5), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:03,837 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 8837 transitions. [2022-01-10 08:22:03,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 08:22:03,839 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:03,839 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] [2022-01-10 08:22:03,847 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-01-10 08:22:04,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:04,047 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:04,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:04,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1746759409, now seen corresponding path program 1 times [2022-01-10 08:22:04,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:04,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [610458485] [2022-01-10 08:22:04,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:04,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:04,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:04,048 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:04,050 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 08:22:04,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:04,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:04,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:04,354 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 08:22:04,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:04,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:04,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [610458485] [2022-01-10 08:22:04,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [610458485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:04,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:04,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:22:04,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973744299] [2022-01-10 08:22:04,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:04,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:04,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:04,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:04,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:04,356 INFO L87 Difference]: Start difference. First operand 7514 states and 8837 transitions. Second operand has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:22:04,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:04,917 INFO L93 Difference]: Finished difference Result 11737 states and 13888 transitions. [2022-01-10 08:22:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:04,918 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 145 [2022-01-10 08:22:04,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:04,933 INFO L225 Difference]: With dead ends: 11737 [2022-01-10 08:22:04,933 INFO L226 Difference]: Without dead ends: 9607 [2022-01-10 08:22:04,938 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 143 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 08:22:04,938 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 389 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 389 SdHoareTripleChecker+Valid, 977 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 08:22:04,938 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [389 Valid, 977 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:04,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9607 states. [2022-01-10 08:22:05,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9607 to 9605. [2022-01-10 08:22:05,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9605 states, 8140 states have (on average 1.1894348894348894) internal successors, (9682), 8288 states have internal predecessors, (9682), 682 states have call successors, (682), 577 states have call predecessors, (682), 781 states have return successors, (928), 742 states have call predecessors, (928), 681 states have call successors, (928) [2022-01-10 08:22:05,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9605 states to 9605 states and 11292 transitions. [2022-01-10 08:22:05,665 INFO L78 Accepts]: Start accepts. Automaton has 9605 states and 11292 transitions. Word has length 145 [2022-01-10 08:22:05,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:05,666 INFO L470 AbstractCegarLoop]: Abstraction has 9605 states and 11292 transitions. [2022-01-10 08:22:05,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 45.0) internal successors, (135), 2 states have internal predecessors, (135), 1 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:22:05,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9605 states and 11292 transitions. [2022-01-10 08:22:05,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:22:05,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:05,670 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 08:22:05,680 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:05,877 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:05,878 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:05,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:05,878 INFO L85 PathProgramCache]: Analyzing trace with hash -898408111, now seen corresponding path program 1 times [2022-01-10 08:22:05,878 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:05,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994709281] [2022-01-10 08:22:05,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:05,879 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:05,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:05,880 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:05,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 08:22:05,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:05,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:05,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:06,133 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 08:22:06,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:06,133 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:06,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994709281] [2022-01-10 08:22:06,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994709281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:06,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:06,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:06,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899605400] [2022-01-10 08:22:06,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:06,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:06,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:06,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:06,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:06,134 INFO L87 Difference]: Start difference. First operand 9605 states and 11292 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 08:22:07,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:07,297 INFO L93 Difference]: Finished difference Result 17514 states and 20636 transitions. [2022-01-10 08:22:07,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:22:07,298 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 08:22:07,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:07,315 INFO L225 Difference]: With dead ends: 17514 [2022-01-10 08:22:07,315 INFO L226 Difference]: Without dead ends: 11945 [2022-01-10 08:22:07,321 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 08:22:07,321 INFO L933 BasicCegarLoop]: 523 mSDtfsCounter, 747 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 779 SdHoareTripleChecker+Valid, 1089 SdHoareTripleChecker+Invalid, 493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:07,322 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [779 Valid, 1089 Invalid, 493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:07,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11945 states. [2022-01-10 08:22:08,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11945 to 11592. [2022-01-10 08:22:08,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11592 states, 9638 states have (on average 1.1901846856194231) internal successors, (11471), 9822 states have internal predecessors, (11471), 902 states have call successors, (902), 766 states have call predecessors, (902), 1050 states have return successors, (1222), 1005 states have call predecessors, (1222), 901 states have call successors, (1222) [2022-01-10 08:22:08,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11592 states to 11592 states and 13595 transitions. [2022-01-10 08:22:08,143 INFO L78 Accepts]: Start accepts. Automaton has 11592 states and 13595 transitions. Word has length 159 [2022-01-10 08:22:08,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:08,143 INFO L470 AbstractCegarLoop]: Abstraction has 11592 states and 13595 transitions. [2022-01-10 08:22:08,143 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 08:22:08,143 INFO L276 IsEmpty]: Start isEmpty. Operand 11592 states and 13595 transitions. [2022-01-10 08:22:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2022-01-10 08:22:08,147 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:08,148 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 08:22:08,158 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:08,348 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:08,348 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:08,348 INFO L85 PathProgramCache]: Analyzing trace with hash -347458668, now seen corresponding path program 1 times [2022-01-10 08:22:08,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:08,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [783727728] [2022-01-10 08:22:08,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:08,349 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:08,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:08,350 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:08,350 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 08:22:08,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:08,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:08,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:08,692 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-01-10 08:22:08,692 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:08,692 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:08,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [783727728] [2022-01-10 08:22:08,692 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [783727728] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:08,692 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:08,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:22:08,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591627292] [2022-01-10 08:22:08,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:08,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:22:08,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:08,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:22:08,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:08,693 INFO L87 Difference]: Start difference. First operand 11592 states and 13595 transitions. Second operand has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:22:09,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:09,246 INFO L93 Difference]: Finished difference Result 15802 states and 18642 transitions. [2022-01-10 08:22:09,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:22:09,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 239 [2022-01-10 08:22:09,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:09,261 INFO L225 Difference]: With dead ends: 15802 [2022-01-10 08:22:09,261 INFO L226 Difference]: Without dead ends: 8459 [2022-01-10 08:22:09,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 234 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:22:09,272 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 34 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2673 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:09,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 2673 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:09,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8459 states. [2022-01-10 08:22:09,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8459 to 7495. [2022-01-10 08:22:09,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 6629 states have (on average 1.1866043143762257) internal successors, (7866), 6689 states have internal predecessors, (7866), 407 states have call successors, (407), 327 states have call predecessors, (407), 457 states have return successors, (543), 479 states have call predecessors, (543), 406 states have call successors, (543) [2022-01-10 08:22:09,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 8816 transitions. [2022-01-10 08:22:09,827 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 8816 transitions. Word has length 239 [2022-01-10 08:22:09,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:09,828 INFO L470 AbstractCegarLoop]: Abstraction has 7495 states and 8816 transitions. [2022-01-10 08:22:09,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.0) internal successors, (126), 5 states have internal predecessors, (126), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:22:09,828 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 8816 transitions. [2022-01-10 08:22:09,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2022-01-10 08:22:09,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:09,833 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 08:22:09,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:10,040 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:10,041 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:10,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:10,041 INFO L85 PathProgramCache]: Analyzing trace with hash -731005622, now seen corresponding path program 1 times [2022-01-10 08:22:10,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:10,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [273745537] [2022-01-10 08:22:10,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:10,042 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:10,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:10,043 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:10,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 08:22:10,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:10,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:10,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:10,455 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 247 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-01-10 08:22:10,456 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:10,456 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:10,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [273745537] [2022-01-10 08:22:10,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [273745537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:10,456 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:10,456 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:10,456 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445303825] [2022-01-10 08:22:10,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:10,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:10,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:10,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:10,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:10,457 INFO L87 Difference]: Start difference. First operand 7495 states and 8816 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-01-10 08:22:11,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:11,130 INFO L93 Difference]: Finished difference Result 12747 states and 15081 transitions. [2022-01-10 08:22:11,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:11,130 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 252 [2022-01-10 08:22:11,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:11,141 INFO L225 Difference]: With dead ends: 12747 [2022-01-10 08:22:11,142 INFO L226 Difference]: Without dead ends: 7562 [2022-01-10 08:22:11,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 250 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 08:22:11,148 INFO L933 BasicCegarLoop]: 570 mSDtfsCounter, 457 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:11,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [457 Valid, 675 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:11,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7562 states. [2022-01-10 08:22:11,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7562 to 7495. [2022-01-10 08:22:11,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7495 states, 6629 states have (on average 1.1819278925931513) internal successors, (7835), 6689 states have internal predecessors, (7835), 407 states have call successors, (407), 327 states have call predecessors, (407), 457 states have return successors, (543), 479 states have call predecessors, (543), 406 states have call successors, (543) [2022-01-10 08:22:11,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7495 states to 7495 states and 8785 transitions. [2022-01-10 08:22:11,665 INFO L78 Accepts]: Start accepts. Automaton has 7495 states and 8785 transitions. Word has length 252 [2022-01-10 08:22:11,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:11,665 INFO L470 AbstractCegarLoop]: Abstraction has 7495 states and 8785 transitions. [2022-01-10 08:22:11,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 3 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-01-10 08:22:11,665 INFO L276 IsEmpty]: Start isEmpty. Operand 7495 states and 8785 transitions. [2022-01-10 08:22:11,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2022-01-10 08:22:11,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:11,669 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-01-10 08:22:11,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:11,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:11,870 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:11,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:11,871 INFO L85 PathProgramCache]: Analyzing trace with hash 317102545, now seen corresponding path program 1 times [2022-01-10 08:22:11,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:11,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [70910621] [2022-01-10 08:22:11,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:11,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:11,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:11,872 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:11,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-01-10 08:22:11,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:11,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 498 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:11,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:12,242 INFO L134 CoverageAnalysis]: Checked inductivity of 304 backedges. 200 proven. 0 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-01-10 08:22:12,242 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:12,242 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:12,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [70910621] [2022-01-10 08:22:12,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [70910621] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:12,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:12,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:12,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081767718] [2022-01-10 08:22:12,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:12,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:12,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:12,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:12,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:12,243 INFO L87 Difference]: Start difference. First operand 7495 states and 8785 transitions. Second operand has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 08:22:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:13,108 INFO L93 Difference]: Finished difference Result 9114 states and 10668 transitions. [2022-01-10 08:22:13,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:13,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) Word has length 253 [2022-01-10 08:22:13,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:13,116 INFO L225 Difference]: With dead ends: 9114 [2022-01-10 08:22:13,116 INFO L226 Difference]: Without dead ends: 5933 [2022-01-10 08:22:13,119 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 250 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:13,119 INFO L933 BasicCegarLoop]: 583 mSDtfsCounter, 248 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 629 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 252 SdHoareTripleChecker+Valid, 1407 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 629 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:13,119 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [252 Valid, 1407 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 629 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:13,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5933 states. [2022-01-10 08:22:13,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5933 to 5711. [2022-01-10 08:22:13,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5711 states, 5179 states have (on average 1.1789920834137864) internal successors, (6106), 5205 states have internal predecessors, (6106), 260 states have call successors, (260), 222 states have call predecessors, (260), 270 states have return successors, (334), 284 states have call predecessors, (334), 259 states have call successors, (334) [2022-01-10 08:22:13,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5711 states to 5711 states and 6700 transitions. [2022-01-10 08:22:13,530 INFO L78 Accepts]: Start accepts. Automaton has 5711 states and 6700 transitions. Word has length 253 [2022-01-10 08:22:13,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:13,530 INFO L470 AbstractCegarLoop]: Abstraction has 5711 states and 6700 transitions. [2022-01-10 08:22:13,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 30.8) internal successors, (154), 4 states have internal predecessors, (154), 3 states have call successors, (21), 4 states have call predecessors, (21), 4 states have return successors, (21), 3 states have call predecessors, (21), 3 states have call successors, (21) [2022-01-10 08:22:13,530 INFO L276 IsEmpty]: Start isEmpty. Operand 5711 states and 6700 transitions. [2022-01-10 08:22:13,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 08:22:13,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:13,533 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:13,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:13,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:13,734 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1921511282, now seen corresponding path program 1 times [2022-01-10 08:22:13,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:13,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [327060098] [2022-01-10 08:22:13,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:13,735 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:13,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:13,735 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:13,736 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-01-10 08:22:13,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:13,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:13,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:14,142 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:22:14,143 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:14,143 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:14,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [327060098] [2022-01-10 08:22:14,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [327060098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:14,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:14,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:22:14,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298734239] [2022-01-10 08:22:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:14,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:14,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:14,144 INFO L87 Difference]: Start difference. First operand 5711 states and 6700 transitions. Second operand has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:14,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:14,854 INFO L93 Difference]: Finished difference Result 13770 states and 16295 transitions. [2022-01-10 08:22:14,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:14,854 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 236 [2022-01-10 08:22:14,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:14,868 INFO L225 Difference]: With dead ends: 13770 [2022-01-10 08:22:14,868 INFO L226 Difference]: Without dead ends: 9549 [2022-01-10 08:22:14,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 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 08:22:14,874 INFO L933 BasicCegarLoop]: 601 mSDtfsCounter, 381 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 976 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 08:22:14,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 976 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:14,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9549 states. [2022-01-10 08:22:15,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9549 to 9539. [2022-01-10 08:22:15,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9539 states, 8811 states have (on average 1.1782998524571557) internal successors, (10382), 8841 states have internal predecessors, (10382), 362 states have call successors, (362), 314 states have call predecessors, (362), 364 states have return successors, (438), 384 states have call predecessors, (438), 361 states have call successors, (438) [2022-01-10 08:22:15,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9539 states to 9539 states and 11182 transitions. [2022-01-10 08:22:15,619 INFO L78 Accepts]: Start accepts. Automaton has 9539 states and 11182 transitions. Word has length 236 [2022-01-10 08:22:15,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:15,619 INFO L470 AbstractCegarLoop]: Abstraction has 9539 states and 11182 transitions. [2022-01-10 08:22:15,619 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.0) internal successors, (213), 2 states have internal predecessors, (213), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:15,619 INFO L276 IsEmpty]: Start isEmpty. Operand 9539 states and 11182 transitions. [2022-01-10 08:22:15,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 08:22:15,623 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:15,623 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:15,630 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Ended with exit code 0 [2022-01-10 08:22:15,823 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:15,823 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:15,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:15,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1213548049, now seen corresponding path program 1 times [2022-01-10 08:22:15,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:15,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [440269294] [2022-01-10 08:22:15,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:15,824 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:15,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:15,825 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:15,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-01-10 08:22:15,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:15,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:22:15,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:16,267 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 08:22:16,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:16,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:16,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [440269294] [2022-01-10 08:22:16,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [440269294] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:16,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:16,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:16,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64969257] [2022-01-10 08:22:16,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:16,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:22:16,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:16,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:22:16,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:22:16,268 INFO L87 Difference]: Start difference. First operand 9539 states and 11182 transitions. Second operand has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:17,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:17,842 INFO L93 Difference]: Finished difference Result 25469 states and 29902 transitions. [2022-01-10 08:22:17,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:17,843 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 236 [2022-01-10 08:22:17,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:17,873 INFO L225 Difference]: With dead ends: 25469 [2022-01-10 08:22:17,873 INFO L226 Difference]: Without dead ends: 17421 [2022-01-10 08:22:17,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 234 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 08:22:17,885 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 694 mSDsluCounter, 762 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 710 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:17,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [710 Valid, 1472 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 197 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:17,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17421 states. [2022-01-10 08:22:19,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17421 to 17419. [2022-01-10 08:22:19,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17419 states, 16288 states have (on average 1.1757121807465618) internal successors, (19150), 16331 states have internal predecessors, (19150), 569 states have call successors, (569), 498 states have call predecessors, (569), 560 states have return successors, (681), 591 states have call predecessors, (681), 568 states have call successors, (681) [2022-01-10 08:22:19,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17419 states to 17419 states and 20400 transitions. [2022-01-10 08:22:19,236 INFO L78 Accepts]: Start accepts. Automaton has 17419 states and 20400 transitions. Word has length 236 [2022-01-10 08:22:19,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:19,237 INFO L470 AbstractCegarLoop]: Abstraction has 17419 states and 20400 transitions. [2022-01-10 08:22:19,237 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 39.75) internal successors, (159), 4 states have internal predecessors, (159), 4 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:19,237 INFO L276 IsEmpty]: Start isEmpty. Operand 17419 states and 20400 transitions. [2022-01-10 08:22:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2022-01-10 08:22:19,243 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:19,243 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:19,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:19,444 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:19,444 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:19,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:19,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1227909741, now seen corresponding path program 1 times [2022-01-10 08:22:19,445 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:19,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2054772504] [2022-01-10 08:22:19,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:19,445 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:19,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:19,446 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:19,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-01-10 08:22:19,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:19,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:19,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:19,783 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-01-10 08:22:19,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:19,783 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:19,783 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2054772504] [2022-01-10 08:22:19,783 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2054772504] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:19,783 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:19,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:19,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983411751] [2022-01-10 08:22:19,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:19,784 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:19,784 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:19,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:19,784 INFO L87 Difference]: Start difference. First operand 17419 states and 20400 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:22:20,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:20,889 INFO L93 Difference]: Finished difference Result 29515 states and 34575 transitions. [2022-01-10 08:22:20,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:20,890 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 236 [2022-01-10 08:22:20,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:20,919 INFO L225 Difference]: With dead ends: 29515 [2022-01-10 08:22:20,919 INFO L226 Difference]: Without dead ends: 13587 [2022-01-10 08:22:20,941 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 234 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 08:22:20,941 INFO L933 BasicCegarLoop]: 540 mSDtfsCounter, 405 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 405 SdHoareTripleChecker+Valid, 668 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 08:22:20,941 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [405 Valid, 668 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:20,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13587 states.