/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.12.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:21:50,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:21:50,350 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:21:50,426 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:21:50,426 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:21:50,430 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:21:50,433 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:21:50,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:21:50,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:21:50,440 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:21:50,441 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:21:50,442 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:21:50,442 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:21:50,443 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:21:50,444 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:21:50,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:21:50,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:21:50,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:21:50,447 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:21:50,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:21:50,450 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:21:50,451 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:21:50,452 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:21:50,452 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:21:50,454 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:21:50,455 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:21:50,455 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:21:50,456 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:21:50,456 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:21:50,457 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:21:50,457 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:21:50,458 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:21:50,458 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:21:50,459 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:21:50,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:21:50,460 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:21:50,460 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:21:50,460 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:21:50,461 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:21:50,461 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:21:50,462 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:21:50,464 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 08:21:50,489 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:21:50,490 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:21:50,490 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:21:50,490 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:21:50,491 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:21:50,491 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:21:50,492 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:21:50,492 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:21:50,492 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:21:50,492 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:21:50,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:21:50,493 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:21:50,493 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:21:50,493 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:21:50,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:21:50,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:21:50,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:21:50,495 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:21:50,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:50,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:21:50,496 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:21:50,496 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:21:50,496 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:21:50,497 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:21:50,497 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:21:50,497 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:21:50,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:21:50,497 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:21:50,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:21:50,751 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:21:50,784 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:21:50,786 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:21:50,787 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:21:50,788 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:21:50,789 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-01-10 08:21:50,850 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197441182/4adffe20b42c4cf98fd15f1900c2bb00/FLAG58c0cfd67 [2022-01-10 08:21:51,341 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:21:51,342 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-01-10 08:21:51,374 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197441182/4adffe20b42c4cf98fd15f1900c2bb00/FLAG58c0cfd67 [2022-01-10 08:21:51,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/197441182/4adffe20b42c4cf98fd15f1900c2bb00 [2022-01-10 08:21:51,666 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:21:51,667 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:21:51,676 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:51,676 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:21:51,679 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:21:51,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:51" (1/1) ... [2022-01-10 08:21:51,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@426f0225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:51, skipping insertion in model container [2022-01-10 08:21:51,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:21:51" (1/1) ... [2022-01-10 08:21:51,686 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:21:51,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:21:51,968 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.12.cil-1.c[914,927] [2022-01-10 08:21:52,041 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.12.cil-1.c[7115,7128] [2022-01-10 08:21:52,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:52,205 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:21:52,216 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.12.cil-1.c[914,927] [2022-01-10 08:21:52,240 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.12.cil-1.c[7115,7128] [2022-01-10 08:21:52,289 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:21:52,312 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:21:52,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52 WrapperNode [2022-01-10 08:21:52,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:21:52,314 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:52,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:21:52,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:21:52,320 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,350 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,412 INFO L137 Inliner]: procedures = 78, calls = 94, calls flagged for inlining = 45, calls inlined = 45, statements flattened = 1005 [2022-01-10 08:21:52,412 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:21:52,413 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:21:52,413 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:21:52,413 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:21:52,420 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,420 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,426 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,426 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,466 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,477 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:21:52,478 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:21:52,478 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:21:52,478 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:21:52,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (1/1) ... [2022-01-10 08:21:52,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:21:52,518 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:21:52,549 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 08:21:52,576 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 08:21:52,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:21:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:21:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:21:52,594 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:21:52,594 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:21:52,595 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:21:52,595 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:21:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:21:52,596 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:21:52,596 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:21:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:21:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:21:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:21:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:21:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:21:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:21:52,597 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:21:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:21:52,597 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:21:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:21:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:21:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:21:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:21:52,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:21:52,598 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:21:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:21:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:21:52,599 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 08:21:52,599 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 08:21:52,784 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:21:52,785 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:21:53,633 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:21:53,648 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:21:53,648 INFO L299 CfgBuilder]: Removed 19 assume(true) statements. [2022-01-10 08:21:53,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:53 BoogieIcfgContainer [2022-01-10 08:21:53,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:21:53,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:21:53,652 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:21:53,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:21:53,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:21:51" (1/3) ... [2022-01-10 08:21:53,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:53, skipping insertion in model container [2022-01-10 08:21:53,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:21:52" (2/3) ... [2022-01-10 08:21:53,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b7baf4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:21:53, skipping insertion in model container [2022-01-10 08:21:53,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:21:53" (3/3) ... [2022-01-10 08:21:53,658 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-1.c [2022-01-10 08:21:53,662 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:21:53,662 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:21:53,715 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:21:53,722 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 08:21:53,723 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:21:53,758 INFO L276 IsEmpty]: Start isEmpty. Operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) [2022-01-10 08:21:53,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:53,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:53,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:21:53,769 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:53,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:53,774 INFO L85 PathProgramCache]: Analyzing trace with hash -1117056757, now seen corresponding path program 1 times [2022-01-10 08:21:53,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:53,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474381996] [2022-01-10 08:21:53,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:53,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:53,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:53,791 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 08:21:53,792 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 08:21:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:53,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:21:53,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:54,191 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 08:21:54,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:54,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:54,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474381996] [2022-01-10 08:21:54,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474381996] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:54,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:54,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:54,194 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220892942] [2022-01-10 08:21:54,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:54,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:54,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:54,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:54,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:54,228 INFO L87 Difference]: Start difference. First operand has 491 states, 431 states have (on average 1.6450116009280742) internal successors, (709), 439 states have internal predecessors, (709), 42 states have call successors, (42), 15 states have call predecessors, (42), 15 states have return successors, (42), 40 states have call predecessors, (42), 42 states have call successors, (42) 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 08:21:55,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:55,294 INFO L93 Difference]: Finished difference Result 1056 states and 1698 transitions. [2022-01-10 08:21:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:55,297 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 08:21:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:55,310 INFO L225 Difference]: With dead ends: 1056 [2022-01-10 08:21:55,311 INFO L226 Difference]: Without dead ends: 583 [2022-01-10 08:21:55,317 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 08:21:55,320 INFO L933 BasicCegarLoop]: 750 mSDtfsCounter, 478 mSDsluCounter, 1137 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 485 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:55,320 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [485 Valid, 1887 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 08:21:55,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 583 states. [2022-01-10 08:21:55,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 583 to 576. [2022-01-10 08:21:55,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 499 states have (on average 1.531062124248497) internal successors, (764), 506 states have internal predecessors, (764), 53 states have call successors, (53), 22 states have call predecessors, (53), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-01-10 08:21:55,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 871 transitions. [2022-01-10 08:21:55,394 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 871 transitions. Word has length 65 [2022-01-10 08:21:55,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:55,394 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 871 transitions. [2022-01-10 08:21:55,395 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 08:21:55,395 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 871 transitions. [2022-01-10 08:21:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:55,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:55,399 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 08:21:55,434 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 08:21:55,629 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 08:21:55,630 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:55,631 INFO L85 PathProgramCache]: Analyzing trace with hash -713270806, now seen corresponding path program 1 times [2022-01-10 08:21:55,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:55,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [988158417] [2022-01-10 08:21:55,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:55,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:55,634 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 08:21:55,636 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 08:21:55,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:55,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:21:55,736 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:55,873 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 08:21:55,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:55,878 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:55,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [988158417] [2022-01-10 08:21:55,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [988158417] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:55,883 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:55,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:21:55,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110832403] [2022-01-10 08:21:55,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:55,885 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:21:55,885 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:55,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:21:55,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:21:55,886 INFO L87 Difference]: Start difference. First operand 576 states and 871 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 08:21:56,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:56,746 INFO L93 Difference]: Finished difference Result 968 states and 1425 transitions. [2022-01-10 08:21:56,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:56,747 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 08:21:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:56,753 INFO L225 Difference]: With dead ends: 968 [2022-01-10 08:21:56,753 INFO L226 Difference]: Without dead ends: 789 [2022-01-10 08:21:56,754 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 08:21:56,758 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 465 mSDsluCounter, 1115 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 472 SdHoareTripleChecker+Valid, 1860 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:56,759 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [472 Valid, 1860 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 08:21:56,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-01-10 08:21:56,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 781. [2022-01-10 08:21:56,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 781 states, 660 states have (on average 1.4848484848484849) internal successors, (980), 675 states have internal predecessors, (980), 75 states have call successors, (75), 36 states have call predecessors, (75), 44 states have return successors, (96), 74 states have call predecessors, (96), 71 states have call successors, (96) [2022-01-10 08:21:56,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 781 states to 781 states and 1151 transitions. [2022-01-10 08:21:56,834 INFO L78 Accepts]: Start accepts. Automaton has 781 states and 1151 transitions. Word has length 65 [2022-01-10 08:21:56,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:56,835 INFO L470 AbstractCegarLoop]: Abstraction has 781 states and 1151 transitions. [2022-01-10 08:21:56,836 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 08:21:56,836 INFO L276 IsEmpty]: Start isEmpty. Operand 781 states and 1151 transitions. [2022-01-10 08:21:56,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:56,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:56,842 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 08:21:56,854 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 08:21:57,051 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 08:21:57,052 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:57,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1824421333, now seen corresponding path program 1 times [2022-01-10 08:21:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:57,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1877496421] [2022-01-10 08:21:57,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:57,054 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:57,054 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:57,055 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 08:21:57,058 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 08:21:57,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:57,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:57,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:57,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:21:57,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:57,272 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:57,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1877496421] [2022-01-10 08:21:57,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1877496421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:57,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:57,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:57,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952506733] [2022-01-10 08:21:57,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:57,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:57,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:57,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:57,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:57,274 INFO L87 Difference]: Start difference. First operand 781 states and 1151 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 08:21:57,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:57,337 INFO L93 Difference]: Finished difference Result 1171 states and 1683 transitions. [2022-01-10 08:21:57,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:57,337 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 08:21:57,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:57,344 INFO L225 Difference]: With dead ends: 1171 [2022-01-10 08:21:57,344 INFO L226 Difference]: Without dead ends: 801 [2022-01-10 08:21:57,346 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 08:21:57,347 INFO L933 BasicCegarLoop]: 737 mSDtfsCounter, 7 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 3679 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 08:21:57,349 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 3679 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:57,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-01-10 08:21:57,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 791. [2022-01-10 08:21:57,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 668 states have (on average 1.4760479041916168) internal successors, (986), 683 states have internal predecessors, (986), 75 states have call successors, (75), 36 states have call predecessors, (75), 46 states have return successors, (98), 76 states have call predecessors, (98), 71 states have call successors, (98) [2022-01-10 08:21:57,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1159 transitions. [2022-01-10 08:21:57,386 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1159 transitions. Word has length 65 [2022-01-10 08:21:57,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:57,387 INFO L470 AbstractCegarLoop]: Abstraction has 791 states and 1159 transitions. [2022-01-10 08:21:57,387 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 08:21:57,387 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1159 transitions. [2022-01-10 08:21:57,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:57,389 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:57,389 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 08:21:57,402 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 08:21:57,602 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 08:21:57,603 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:57,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:57,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1441186665, now seen corresponding path program 1 times [2022-01-10 08:21:57,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:57,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1274251681] [2022-01-10 08:21:57,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:57,604 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:57,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:57,605 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 08:21:57,606 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 08:21:57,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:57,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:21:57,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:57,842 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 08:21:57,842 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:57,842 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:57,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1274251681] [2022-01-10 08:21:57,843 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1274251681] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:57,843 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:57,843 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:21:57,843 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365097371] [2022-01-10 08:21:57,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:57,844 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:21:57,845 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:57,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:21:57,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:21:57,847 INFO L87 Difference]: Start difference. First operand 791 states and 1159 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 08:21:57,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:57,895 INFO L93 Difference]: Finished difference Result 1185 states and 1689 transitions. [2022-01-10 08:21:57,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:21:57,896 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 08:21:57,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:57,901 INFO L225 Difference]: With dead ends: 1185 [2022-01-10 08:21:57,901 INFO L226 Difference]: Without dead ends: 805 [2022-01-10 08:21:57,905 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 08:21:57,907 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 4 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 3675 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 08:21:57,908 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 3675 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-01-10 08:21:57,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 801. [2022-01-10 08:21:57,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 801 states, 676 states have (on average 1.467455621301775) internal successors, (992), 691 states have internal predecessors, (992), 75 states have call successors, (75), 36 states have call predecessors, (75), 48 states have return successors, (100), 78 states have call predecessors, (100), 71 states have call successors, (100) [2022-01-10 08:21:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 801 states to 801 states and 1167 transitions. [2022-01-10 08:21:57,986 INFO L78 Accepts]: Start accepts. Automaton has 801 states and 1167 transitions. Word has length 65 [2022-01-10 08:21:57,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:57,986 INFO L470 AbstractCegarLoop]: Abstraction has 801 states and 1167 transitions. [2022-01-10 08:21:57,986 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 08:21:57,986 INFO L276 IsEmpty]: Start isEmpty. Operand 801 states and 1167 transitions. [2022-01-10 08:21:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:21:57,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:57,988 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 08:21:57,997 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 08:21:58,188 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 08:21:58,189 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:58,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:58,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1467577237, now seen corresponding path program 1 times [2022-01-10 08:21:58,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:58,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [35902328] [2022-01-10 08:21:58,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:58,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:58,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:58,191 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 08:21:58,192 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 08:21:58,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:58,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:21:58,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:58,407 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 08:21:58,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:58,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:58,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [35902328] [2022-01-10 08:21:58,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [35902328] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:58,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:58,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:21:58,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896467642] [2022-01-10 08:21:58,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:58,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:21:58,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:58,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:21:58,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:21:58,410 INFO L87 Difference]: Start difference. First operand 801 states and 1167 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 08:21:58,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:58,764 INFO L93 Difference]: Finished difference Result 1573 states and 2188 transitions. [2022-01-10 08:21:58,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:21:58,765 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 08:21:58,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:58,770 INFO L225 Difference]: With dead ends: 1573 [2022-01-10 08:21:58,771 INFO L226 Difference]: Without dead ends: 1187 [2022-01-10 08:21:58,772 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 08:21:58,773 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 1021 mSDsluCounter, 400 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1052 SdHoareTripleChecker+Valid, 1115 SdHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:21:58,773 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1052 Valid, 1115 Invalid, 226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:21:58,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2022-01-10 08:21:58,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 1183. [2022-01-10 08:21:58,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1183 states, 968 states have (on average 1.4090909090909092) internal successors, (1364), 998 states have internal predecessors, (1364), 121 states have call successors, (121), 64 states have call predecessors, (121), 92 states have return successors, (185), 129 states have call predecessors, (185), 117 states have call successors, (185) [2022-01-10 08:21:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1183 states to 1183 states and 1670 transitions. [2022-01-10 08:21:58,828 INFO L78 Accepts]: Start accepts. Automaton has 1183 states and 1670 transitions. Word has length 65 [2022-01-10 08:21:58,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:58,831 INFO L470 AbstractCegarLoop]: Abstraction has 1183 states and 1670 transitions. [2022-01-10 08:21:58,831 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 08:21:58,831 INFO L276 IsEmpty]: Start isEmpty. Operand 1183 states and 1670 transitions. [2022-01-10 08:21:58,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:58,833 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:58,833 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 08:21:58,846 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 08:21:59,046 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 08:21:59,046 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:59,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:59,047 INFO L85 PathProgramCache]: Analyzing trace with hash 1634733441, now seen corresponding path program 1 times [2022-01-10 08:21:59,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:59,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [585823576] [2022-01-10 08:21:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:59,048 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:59,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:59,049 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 08:21:59,051 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 08:21:59,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:59,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:59,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:59,295 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 08:21:59,295 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:59,295 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:59,295 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [585823576] [2022-01-10 08:21:59,295 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [585823576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:59,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:59,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:59,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051224474] [2022-01-10 08:21:59,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:59,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:59,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:59,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:59,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:59,297 INFO L87 Difference]: Start difference. First operand 1183 states and 1670 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 08:21:59,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:59,363 INFO L93 Difference]: Finished difference Result 2633 states and 3577 transitions. [2022-01-10 08:21:59,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:59,364 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 08:21:59,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:21:59,373 INFO L225 Difference]: With dead ends: 2633 [2022-01-10 08:21:59,373 INFO L226 Difference]: Without dead ends: 1877 [2022-01-10 08:21:59,376 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 08:21:59,376 INFO L933 BasicCegarLoop]: 755 mSDtfsCounter, 671 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 863 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 08:21:59,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [671 Valid, 863 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:21:59,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1877 states. [2022-01-10 08:21:59,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1877 to 1833. [2022-01-10 08:21:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1470 states have (on average 1.3523809523809525) internal successors, (1988), 1522 states have internal predecessors, (1988), 187 states have call successors, (187), 120 states have call predecessors, (187), 174 states have return successors, (299), 199 states have call predecessors, (299), 183 states have call successors, (299) [2022-01-10 08:21:59,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 2474 transitions. [2022-01-10 08:21:59,449 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 2474 transitions. Word has length 66 [2022-01-10 08:21:59,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:21:59,449 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 2474 transitions. [2022-01-10 08:21:59,449 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 08:21:59,449 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 2474 transitions. [2022-01-10 08:21:59,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:21:59,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:21:59,452 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 08:21:59,465 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 08:21:59,667 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 08:21:59,668 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:21:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:21:59,668 INFO L85 PathProgramCache]: Analyzing trace with hash 176493782, now seen corresponding path program 1 times [2022-01-10 08:21:59,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:21:59,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [308860028] [2022-01-10 08:21:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:21:59,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:21:59,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:21:59,670 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 08:21:59,670 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 08:21:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:21:59,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:21:59,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:21:59,887 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 08:21:59,888 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:21:59,888 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:21:59,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [308860028] [2022-01-10 08:21:59,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [308860028] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:21:59,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:21:59,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:21:59,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713577549] [2022-01-10 08:21:59,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:21:59,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:21:59,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:21:59,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:21:59,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:21:59,890 INFO L87 Difference]: Start difference. First operand 1833 states and 2474 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 08:21:59,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:21:59,988 INFO L93 Difference]: Finished difference Result 4485 states and 5879 transitions. [2022-01-10 08:21:59,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:21:59,989 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 08:21:59,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:00,006 INFO L225 Difference]: With dead ends: 4485 [2022-01-10 08:22:00,006 INFO L226 Difference]: Without dead ends: 3051 [2022-01-10 08:22:00,011 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 08:22:00,012 INFO L933 BasicCegarLoop]: 745 mSDtfsCounter, 66 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 1449 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:00,013 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 1449 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:00,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2022-01-10 08:22:00,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 3011. [2022-01-10 08:22:00,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3011 states, 2380 states have (on average 1.311344537815126) internal successors, (3121), 2453 states have internal predecessors, (3121), 307 states have call successors, (307), 232 states have call predecessors, (307), 322 states have return successors, (477), 330 states have call predecessors, (477), 303 states have call successors, (477) [2022-01-10 08:22:00,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3011 states to 3011 states and 3905 transitions. [2022-01-10 08:22:00,118 INFO L78 Accepts]: Start accepts. Automaton has 3011 states and 3905 transitions. Word has length 66 [2022-01-10 08:22:00,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:00,118 INFO L470 AbstractCegarLoop]: Abstraction has 3011 states and 3905 transitions. [2022-01-10 08:22:00,118 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 08:22:00,119 INFO L276 IsEmpty]: Start isEmpty. Operand 3011 states and 3905 transitions. [2022-01-10 08:22:00,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 08:22:00,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:00,125 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 08:22:00,136 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 08:22:00,334 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 08:22:00,335 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:00,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:00,336 INFO L85 PathProgramCache]: Analyzing trace with hash 138145877, now seen corresponding path program 1 times [2022-01-10 08:22:00,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:00,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492852347] [2022-01-10 08:22:00,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:00,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:00,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:00,338 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 08:22:00,374 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 08:22:00,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:00,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:00,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:00,565 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 08:22:00,565 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:00,565 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:00,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492852347] [2022-01-10 08:22:00,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492852347] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:00,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:00,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:00,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375329837] [2022-01-10 08:22:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:00,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:00,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:00,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:00,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:00,569 INFO L87 Difference]: Start difference. First operand 3011 states and 3905 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 08:22:00,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:00,676 INFO L93 Difference]: Finished difference Result 6223 states and 7919 transitions. [2022-01-10 08:22:00,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:00,677 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 08:22:00,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:00,696 INFO L225 Difference]: With dead ends: 6223 [2022-01-10 08:22:00,696 INFO L226 Difference]: Without dead ends: 3619 [2022-01-10 08:22:00,703 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 08:22:00,704 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 667 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 667 SdHoareTripleChecker+Valid, 867 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 08:22:00,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [667 Valid, 867 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:00,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3619 states. [2022-01-10 08:22:00,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3619 to 3575. [2022-01-10 08:22:00,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3575 states, 2816 states have (on average 1.29296875) internal successors, (3641), 2897 states have internal predecessors, (3641), 371 states have call successors, (371), 288 states have call predecessors, (371), 386 states have return successors, (560), 394 states have call predecessors, (560), 367 states have call successors, (560) [2022-01-10 08:22:00,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3575 states to 3575 states and 4572 transitions. [2022-01-10 08:22:00,881 INFO L78 Accepts]: Start accepts. Automaton has 3575 states and 4572 transitions. Word has length 72 [2022-01-10 08:22:00,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:00,882 INFO L470 AbstractCegarLoop]: Abstraction has 3575 states and 4572 transitions. [2022-01-10 08:22:00,882 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 08:22:00,882 INFO L276 IsEmpty]: Start isEmpty. Operand 3575 states and 4572 transitions. [2022-01-10 08:22:00,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 08:22:00,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:00,884 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 08:22:00,897 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 08:22:01,094 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 08:22:01,094 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:01,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:01,095 INFO L85 PathProgramCache]: Analyzing trace with hash -529402658, now seen corresponding path program 1 times [2022-01-10 08:22:01,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:01,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1719151852] [2022-01-10 08:22:01,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:01,095 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:01,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:01,097 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 08:22:01,099 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 08:22:01,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:01,197 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:01,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:01,325 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 08:22:01,326 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:01,326 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:01,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1719151852] [2022-01-10 08:22:01,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1719151852] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:01,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:01,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:01,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836729683] [2022-01-10 08:22:01,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:01,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:22:01,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:01,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:22:01,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:22:01,328 INFO L87 Difference]: Start difference. First operand 3575 states and 4572 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 08:22:01,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:01,594 INFO L93 Difference]: Finished difference Result 4255 states and 5405 transitions. [2022-01-10 08:22:01,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:01,596 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 08:22:01,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:01,615 INFO L225 Difference]: With dead ends: 4255 [2022-01-10 08:22:01,615 INFO L226 Difference]: Without dead ends: 4252 [2022-01-10 08:22:01,618 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 08:22:01,620 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1377 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:01,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1377 Valid, 850 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:22:01,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4252 states. [2022-01-10 08:22:01,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4252 to 4210. [2022-01-10 08:22:01,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4210 states, 3306 states have (on average 1.2831215970961887) internal successors, (4242), 3401 states have internal predecessors, (4242), 436 states have call successors, (436), 344 states have call predecessors, (436), 466 states have return successors, (663), 469 states have call predecessors, (663), 433 states have call successors, (663) [2022-01-10 08:22:01,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4210 states to 4210 states and 5341 transitions. [2022-01-10 08:22:01,829 INFO L78 Accepts]: Start accepts. Automaton has 4210 states and 5341 transitions. Word has length 73 [2022-01-10 08:22:01,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:01,830 INFO L470 AbstractCegarLoop]: Abstraction has 4210 states and 5341 transitions. [2022-01-10 08:22:01,830 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 08:22:01,830 INFO L276 IsEmpty]: Start isEmpty. Operand 4210 states and 5341 transitions. [2022-01-10 08:22:01,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 08:22:01,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:01,832 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 08:22:01,844 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 08:22:02,042 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 08:22:02,043 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:02,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:02,043 INFO L85 PathProgramCache]: Analyzing trace with hash 766925247, now seen corresponding path program 1 times [2022-01-10 08:22:02,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:02,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579722558] [2022-01-10 08:22:02,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:02,044 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:02,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:02,045 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 08:22:02,083 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 08:22:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:02,163 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:02,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:02,535 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 08:22:02,536 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 08:22:02,728 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 08:22:02,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:02,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579722558] [2022-01-10 08:22:02,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [579722558] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 08:22:02,728 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-01-10 08:22:02,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 7 [2022-01-10 08:22:02,728 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660362017] [2022-01-10 08:22:02,728 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-01-10 08:22:02,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 08:22:02,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:02,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 08:22:02,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:22:02,729 INFO L87 Difference]: Start difference. First operand 4210 states and 5341 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 08:22:03,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:03,381 INFO L93 Difference]: Finished difference Result 9193 states and 11541 transitions. [2022-01-10 08:22:03,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:22:03,384 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 08:22:03,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:03,431 INFO L225 Difference]: With dead ends: 9193 [2022-01-10 08:22:03,432 INFO L226 Difference]: Without dead ends: 9190 [2022-01-10 08:22:03,436 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 08:22:03,437 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 1816 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1816 SdHoareTripleChecker+Valid, 2636 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:03,438 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1816 Valid, 2636 Invalid, 389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:03,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9190 states. [2022-01-10 08:22:03,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9190 to 6792. [2022-01-10 08:22:03,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6792 states, 5308 states have (on average 1.271665410700829) internal successors, (6750), 5469 states have internal predecessors, (6750), 700 states have call successors, (700), 568 states have call predecessors, (700), 782 states have return successors, (1097), 759 states have call predecessors, (1097), 697 states have call successors, (1097) [2022-01-10 08:22:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6792 states to 6792 states and 8547 transitions. [2022-01-10 08:22:03,807 INFO L78 Accepts]: Start accepts. Automaton has 6792 states and 8547 transitions. Word has length 74 [2022-01-10 08:22:03,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:03,808 INFO L470 AbstractCegarLoop]: Abstraction has 6792 states and 8547 transitions. [2022-01-10 08:22:03,809 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 08:22:03,809 INFO L276 IsEmpty]: Start isEmpty. Operand 6792 states and 8547 transitions. [2022-01-10 08:22:03,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 08:22:03,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:03,811 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 08:22:03,823 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 08:22:04,020 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 08:22:04,021 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash 889380766, now seen corresponding path program 2 times [2022-01-10 08:22:04,021 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:04,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1815171853] [2022-01-10 08:22:04,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-10 08:22:04,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:04,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:04,023 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 08:22:04,024 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 08:22:04,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-10 08:22:04,150 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-10 08:22:04,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:04,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:04,270 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 08:22:04,271 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:04,271 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:04,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1815171853] [2022-01-10 08:22:04,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1815171853] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:04,271 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:04,271 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:04,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802966391] [2022-01-10 08:22:04,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:04,272 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:04,272 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:04,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:04,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:04,272 INFO L87 Difference]: Start difference. First operand 6792 states and 8547 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 08:22:04,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:04,452 INFO L93 Difference]: Finished difference Result 10039 states and 12679 transitions. [2022-01-10 08:22:04,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:04,453 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 08:22:04,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:04,471 INFO L225 Difference]: With dead ends: 10039 [2022-01-10 08:22:04,471 INFO L226 Difference]: Without dead ends: 4228 [2022-01-10 08:22:04,486 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 08:22:04,487 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 707 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 930 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 08:22:04,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [707 Valid, 930 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:04,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4228 states. [2022-01-10 08:22:04,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4228 to 4196. [2022-01-10 08:22:04,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4196 states, 3296 states have (on average 1.2694174757281553) internal successors, (4184), 3387 states have internal predecessors, (4184), 436 states have call successors, (436), 344 states have call predecessors, (436), 462 states have return successors, (631), 469 states have call predecessors, (631), 433 states have call successors, (631) [2022-01-10 08:22:04,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4196 states to 4196 states and 5251 transitions. [2022-01-10 08:22:04,705 INFO L78 Accepts]: Start accepts. Automaton has 4196 states and 5251 transitions. Word has length 77 [2022-01-10 08:22:04,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:04,705 INFO L470 AbstractCegarLoop]: Abstraction has 4196 states and 5251 transitions. [2022-01-10 08:22:04,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 08:22:04,705 INFO L276 IsEmpty]: Start isEmpty. Operand 4196 states and 5251 transitions. [2022-01-10 08:22:04,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 08:22:04,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:04,708 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:04,723 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:04,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:04,918 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:04,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:04,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1748274255, now seen corresponding path program 1 times [2022-01-10 08:22:04,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:04,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [281100201] [2022-01-10 08:22:04,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:04,919 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:04,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:04,920 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:04,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-01-10 08:22:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:05,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:05,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:05,162 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:05,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:05,162 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:05,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [281100201] [2022-01-10 08:22:05,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [281100201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:05,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:05,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:05,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024485417] [2022-01-10 08:22:05,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:05,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:05,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:05,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:05,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:05,164 INFO L87 Difference]: Start difference. First operand 4196 states and 5251 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:05,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:05,412 INFO L93 Difference]: Finished difference Result 11219 states and 13796 transitions. [2022-01-10 08:22:05,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:05,412 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 84 [2022-01-10 08:22:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:05,443 INFO L225 Difference]: With dead ends: 11219 [2022-01-10 08:22:05,443 INFO L226 Difference]: Without dead ends: 5996 [2022-01-10 08:22:05,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:05,459 INFO L933 BasicCegarLoop]: 826 mSDtfsCounter, 89 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1553 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:05,460 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 1553 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:05,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5996 states. [2022-01-10 08:22:05,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5996 to 5996. [2022-01-10 08:22:05,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5996 states, 4658 states have (on average 1.246243022756548) internal successors, (5805), 4794 states have internal predecessors, (5805), 634 states have call successors, (634), 512 states have call predecessors, (634), 702 states have return successors, (955), 694 states have call predecessors, (955), 631 states have call successors, (955) [2022-01-10 08:22:05,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5996 states to 5996 states and 7394 transitions. [2022-01-10 08:22:05,762 INFO L78 Accepts]: Start accepts. Automaton has 5996 states and 7394 transitions. Word has length 84 [2022-01-10 08:22:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:05,762 INFO L470 AbstractCegarLoop]: Abstraction has 5996 states and 7394 transitions. [2022-01-10 08:22:05,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 5996 states and 7394 transitions. [2022-01-10 08:22:05,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-01-10 08:22:05,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:05,765 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:05,779 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:05,975 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:05,976 INFO L85 PathProgramCache]: Analyzing trace with hash -2038386571, now seen corresponding path program 1 times [2022-01-10 08:22:05,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:05,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [406007117] [2022-01-10 08:22:05,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:05,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:05,978 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:05,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-01-10 08:22:06,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:06,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:06,239 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:22:06,239 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:06,239 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:06,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [406007117] [2022-01-10 08:22:06,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [406007117] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:06,240 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:06,240 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:06,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131978121] [2022-01-10 08:22:06,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:06,240 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:22:06,240 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:06,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:22:06,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:22:06,241 INFO L87 Difference]: Start difference. First operand 5996 states and 7394 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:06,775 INFO L93 Difference]: Finished difference Result 11611 states and 14194 transitions. [2022-01-10 08:22:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 92 [2022-01-10 08:22:06,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:06,792 INFO L225 Difference]: With dead ends: 11611 [2022-01-10 08:22:06,792 INFO L226 Difference]: Without dead ends: 6026 [2022-01-10 08:22:06,803 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:06,804 INFO L933 BasicCegarLoop]: 710 mSDtfsCounter, 1000 mSDsluCounter, 387 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:06,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 1097 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:06,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6026 states. [2022-01-10 08:22:07,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6026 to 6026. [2022-01-10 08:22:07,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6026 states, 4673 states have (on average 1.2313289107639631) internal successors, (5754), 4824 states have internal predecessors, (5754), 634 states have call successors, (634), 512 states have call predecessors, (634), 717 states have return successors, (955), 694 states have call predecessors, (955), 631 states have call successors, (955) [2022-01-10 08:22:07,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6026 states to 6026 states and 7343 transitions. [2022-01-10 08:22:07,051 INFO L78 Accepts]: Start accepts. Automaton has 6026 states and 7343 transitions. Word has length 92 [2022-01-10 08:22:07,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:07,051 INFO L470 AbstractCegarLoop]: Abstraction has 6026 states and 7343 transitions. [2022-01-10 08:22:07,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 4 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-01-10 08:22:07,051 INFO L276 IsEmpty]: Start isEmpty. Operand 6026 states and 7343 transitions. [2022-01-10 08:22:07,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 08:22:07,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:07,054 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:07,064 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 08:22:07,264 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:07,264 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:07,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:07,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1535694468, now seen corresponding path program 1 times [2022-01-10 08:22:07,265 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:07,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663445945] [2022-01-10 08:22:07,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:07,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:07,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:07,267 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:07,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-01-10 08:22:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:07,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:07,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:07,517 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-10 08:22:07,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:07,517 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:07,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663445945] [2022-01-10 08:22:07,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663445945] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:07,518 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:07,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:07,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904139276] [2022-01-10 08:22:07,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:07,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:07,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:07,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:07,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:07,519 INFO L87 Difference]: Start difference. First operand 6026 states and 7343 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:07,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:07,742 INFO L93 Difference]: Finished difference Result 11378 states and 13727 transitions. [2022-01-10 08:22:07,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:07,742 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 93 [2022-01-10 08:22:07,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:07,762 INFO L225 Difference]: With dead ends: 11378 [2022-01-10 08:22:07,762 INFO L226 Difference]: Without dead ends: 5753 [2022-01-10 08:22:07,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:07,775 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 102 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1543 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 08:22:07,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1543 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:07,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5753 states. [2022-01-10 08:22:07,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5753 to 5750. [2022-01-10 08:22:08,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5750 states, 4467 states have (on average 1.2209536601746138) internal successors, (5454), 4612 states have internal predecessors, (5454), 596 states have call successors, (596), 484 states have call predecessors, (596), 685 states have return successors, (838), 656 states have call predecessors, (838), 593 states have call successors, (838) [2022-01-10 08:22:08,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5750 states to 5750 states and 6888 transitions. [2022-01-10 08:22:08,066 INFO L78 Accepts]: Start accepts. Automaton has 5750 states and 6888 transitions. Word has length 93 [2022-01-10 08:22:08,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:08,066 INFO L470 AbstractCegarLoop]: Abstraction has 5750 states and 6888 transitions. [2022-01-10 08:22:08,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-01-10 08:22:08,067 INFO L276 IsEmpty]: Start isEmpty. Operand 5750 states and 6888 transitions. [2022-01-10 08:22:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:22:08,073 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:08,073 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 08:22:08,083 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Ended with exit code 0 [2022-01-10 08:22:08,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:08,283 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:08,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:08,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1172930560, now seen corresponding path program 1 times [2022-01-10 08:22:08,284 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:08,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1484935896] [2022-01-10 08:22:08,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:08,284 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:08,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:08,286 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:08,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-01-10 08:22:08,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:08,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:08,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:08,604 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 08:22:08,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:08,605 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:08,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1484935896] [2022-01-10 08:22:08,605 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1484935896] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:08,605 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:08,605 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:08,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9176631] [2022-01-10 08:22:08,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:08,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:08,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:08,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:08,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:08,606 INFO L87 Difference]: Start difference. First operand 5750 states and 6888 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 08:22:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:09,533 INFO L93 Difference]: Finished difference Result 13659 states and 16232 transitions. [2022-01-10 08:22:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:22:09,534 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 08:22:09,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:09,561 INFO L225 Difference]: With dead ends: 13659 [2022-01-10 08:22:09,561 INFO L226 Difference]: Without dead ends: 8090 [2022-01-10 08:22:09,577 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 08:22:09,577 INFO L933 BasicCegarLoop]: 713 mSDtfsCounter, 1036 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1071 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:09,578 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1071 Valid, 1451 Invalid, 611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:22:09,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2022-01-10 08:22:09,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 7737. [2022-01-10 08:22:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7737 states, 5965 states have (on average 1.2142497904442582) internal successors, (7243), 6146 states have internal predecessors, (7243), 816 states have call successors, (816), 673 states have call predecessors, (816), 954 states have return successors, (1132), 919 states have call predecessors, (1132), 813 states have call successors, (1132) [2022-01-10 08:22:09,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7737 states to 7737 states and 9191 transitions. [2022-01-10 08:22:09,948 INFO L78 Accepts]: Start accepts. Automaton has 7737 states and 9191 transitions. Word has length 159 [2022-01-10 08:22:09,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:09,949 INFO L470 AbstractCegarLoop]: Abstraction has 7737 states and 9191 transitions. [2022-01-10 08:22:09,949 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 08:22:09,949 INFO L276 IsEmpty]: Start isEmpty. Operand 7737 states and 9191 transitions. [2022-01-10 08:22:09,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:09,953 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:09,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:09,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:10,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:10,164 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:10,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:10,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1451778894, now seen corresponding path program 1 times [2022-01-10 08:22:10,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:10,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2000506485] [2022-01-10 08:22:10,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:10,165 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:10,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:10,166 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:10,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-01-10 08:22:10,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:10,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:10,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:10,535 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 08:22:10,535 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:10,535 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:10,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2000506485] [2022-01-10 08:22:10,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2000506485] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:10,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:10,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:10,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58888977] [2022-01-10 08:22:10,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:10,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:10,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:10,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:10,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:10,537 INFO L87 Difference]: Start difference. First operand 7737 states and 9191 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:10,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:10,780 INFO L93 Difference]: Finished difference Result 8112 states and 9784 transitions. [2022-01-10 08:22:10,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:10,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:10,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:10,803 INFO L225 Difference]: With dead ends: 8112 [2022-01-10 08:22:10,803 INFO L226 Difference]: Without dead ends: 7737 [2022-01-10 08:22:10,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 08:22:10,808 INFO L933 BasicCegarLoop]: 733 mSDtfsCounter, 596 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 596 SdHoareTripleChecker+Valid, 861 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 08:22:10,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [596 Valid, 861 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:10,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2022-01-10 08:22:11,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7737. [2022-01-10 08:22:11,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7737 states, 5965 states have (on average 1.2140821458507962) internal successors, (7242), 6146 states have internal predecessors, (7242), 816 states have call successors, (816), 673 states have call predecessors, (816), 954 states have return successors, (1132), 919 states have call predecessors, (1132), 813 states have call successors, (1132) [2022-01-10 08:22:11,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7737 states to 7737 states and 9190 transitions. [2022-01-10 08:22:11,163 INFO L78 Accepts]: Start accepts. Automaton has 7737 states and 9190 transitions. Word has length 179 [2022-01-10 08:22:11,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:11,163 INFO L470 AbstractCegarLoop]: Abstraction has 7737 states and 9190 transitions. [2022-01-10 08:22:11,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:11,163 INFO L276 IsEmpty]: Start isEmpty. Operand 7737 states and 9190 transitions. [2022-01-10 08:22:11,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:11,167 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:11,167 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:11,185 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:11,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:11,385 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:11,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2141610384, now seen corresponding path program 1 times [2022-01-10 08:22:11,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:11,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [766765895] [2022-01-10 08:22:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:11,387 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:11,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:11,388 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:11,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-01-10 08:22:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:11,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:11,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:11,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:11,739 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:11,739 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:11,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [766765895] [2022-01-10 08:22:11,739 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [766765895] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:11,739 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:11,739 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:11,739 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57581114] [2022-01-10 08:22:11,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:11,740 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:11,740 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:11,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:11,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:11,741 INFO L87 Difference]: Start difference. First operand 7737 states and 9190 transitions. Second operand has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:11,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:11,889 INFO L93 Difference]: Finished difference Result 8104 states and 9767 transitions. [2022-01-10 08:22:11,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:11,889 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:11,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:11,911 INFO L225 Difference]: With dead ends: 8104 [2022-01-10 08:22:11,911 INFO L226 Difference]: Without dead ends: 7737 [2022-01-10 08:22:11,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 177 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 08:22:11,917 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 587 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 587 SdHoareTripleChecker+Valid, 860 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 08:22:11,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [587 Valid, 860 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:11,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7737 states. [2022-01-10 08:22:12,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7737 to 7737. [2022-01-10 08:22:12,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7737 states, 5965 states have (on average 1.2139145012573345) internal successors, (7241), 6146 states have internal predecessors, (7241), 816 states have call successors, (816), 673 states have call predecessors, (816), 954 states have return successors, (1132), 919 states have call predecessors, (1132), 813 states have call successors, (1132) [2022-01-10 08:22:12,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7737 states to 7737 states and 9189 transitions. [2022-01-10 08:22:12,316 INFO L78 Accepts]: Start accepts. Automaton has 7737 states and 9189 transitions. Word has length 179 [2022-01-10 08:22:12,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:12,316 INFO L470 AbstractCegarLoop]: Abstraction has 7737 states and 9189 transitions. [2022-01-10 08:22:12,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 56.0) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:12,317 INFO L276 IsEmpty]: Start isEmpty. Operand 7737 states and 9189 transitions. [2022-01-10 08:22:12,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:12,321 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:12,321 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:12,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:12,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:12,532 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:12,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1367359022, now seen corresponding path program 1 times [2022-01-10 08:22:12,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:12,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1497208171] [2022-01-10 08:22:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:12,533 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:12,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:12,534 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:12,535 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-01-10 08:22:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:12,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 505 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:12,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:12,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:12,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:12,903 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:12,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1497208171] [2022-01-10 08:22:12,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1497208171] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:12,903 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:12,903 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:12,903 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681863676] [2022-01-10 08:22:12,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:12,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:12,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:12,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:12,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:12,904 INFO L87 Difference]: Start difference. First operand 7737 states and 9189 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:13,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:13,811 INFO L93 Difference]: Finished difference Result 8513 states and 10431 transitions. [2022-01-10 08:22:13,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:13,811 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:13,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:13,831 INFO L225 Difference]: With dead ends: 8513 [2022-01-10 08:22:13,831 INFO L226 Difference]: Without dead ends: 8149 [2022-01-10 08:22:13,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:13,835 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1325 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 610 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1355 SdHoareTripleChecker+Valid, 2083 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:13,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1355 Valid, 2083 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 610 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 08:22:13,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8149 states. [2022-01-10 08:22:14,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8149 to 8118. [2022-01-10 08:22:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.235675846786958) internal successors, (7807), 6500 states have internal predecessors, (7807), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:14,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9798 transitions. [2022-01-10 08:22:14,157 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9798 transitions. Word has length 179 [2022-01-10 08:22:14,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:14,157 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9798 transitions. [2022-01-10 08:22:14,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:14,158 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9798 transitions. [2022-01-10 08:22:14,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:14,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:14,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:14,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:14,374 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:14,375 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:14,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:14,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1541868494, now seen corresponding path program 1 times [2022-01-10 08:22:14,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:14,376 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1835098791] [2022-01-10 08:22:14,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:14,376 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:14,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:14,377 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:14,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-01-10 08:22:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:14,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:14,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:14,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:14,774 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:14,774 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:14,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1835098791] [2022-01-10 08:22:14,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1835098791] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:14,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:14,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:14,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908281128] [2022-01-10 08:22:14,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:14,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:14,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:14,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:14,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:14,776 INFO L87 Difference]: Start difference. First operand 8118 states and 9798 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:15,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:15,393 INFO L93 Difference]: Finished difference Result 8863 states and 10986 transitions. [2022-01-10 08:22:15,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:15,394 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:15,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:15,414 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:15,414 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:15,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:15,420 INFO L933 BasicCegarLoop]: 689 mSDtfsCounter, 984 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1454 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:15,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1014 Valid, 1454 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:15,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:15,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:15,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.2345679012345678) internal successors, (7800), 6500 states have internal predecessors, (7800), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:15,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9791 transitions. [2022-01-10 08:22:15,770 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9791 transitions. Word has length 179 [2022-01-10 08:22:15,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:15,770 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9791 transitions. [2022-01-10 08:22:15,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:15,771 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9791 transitions. [2022-01-10 08:22:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:15,775 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:15,775 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:15,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:15,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:15,985 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:15,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:15,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1118788406, now seen corresponding path program 1 times [2022-01-10 08:22:15,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:15,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489460434] [2022-01-10 08:22:15,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:15,986 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:15,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:15,987 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:15,989 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-01-10 08:22:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:16,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:16,150 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:16,397 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:16,397 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:16,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489460434] [2022-01-10 08:22:16,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489460434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:16,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:16,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:16,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585192679] [2022-01-10 08:22:16,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:16,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:16,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:16,398 INFO L87 Difference]: Start difference. First operand 8118 states and 9791 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:17,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:17,017 INFO L93 Difference]: Finished difference Result 8863 states and 10972 transitions. [2022-01-10 08:22:17,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:17,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:17,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:17,035 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:17,035 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:17,042 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:17,042 INFO L933 BasicCegarLoop]: 686 mSDtfsCounter, 978 mSDsluCounter, 761 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:17,042 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1008 Valid, 1447 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:17,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:17,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:17,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.233459955682178) internal successors, (7793), 6500 states have internal predecessors, (7793), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:17,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9784 transitions. [2022-01-10 08:22:17,460 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9784 transitions. Word has length 179 [2022-01-10 08:22:17,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:17,460 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9784 transitions. [2022-01-10 08:22:17,460 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:17,460 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9784 transitions. [2022-01-10 08:22:17,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:17,465 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:17,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:17,478 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:17,678 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:17,679 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:17,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:17,679 INFO L85 PathProgramCache]: Analyzing trace with hash 873593934, now seen corresponding path program 1 times [2022-01-10 08:22:17,680 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:17,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1930448019] [2022-01-10 08:22:17,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:17,680 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:17,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:17,681 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:17,683 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-01-10 08:22:17,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:17,847 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:17,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:18,087 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 08:22:18,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:18,088 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:18,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1930448019] [2022-01-10 08:22:18,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1930448019] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:18,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:18,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:18,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019825912] [2022-01-10 08:22:18,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:18,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:18,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:18,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:18,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:18,090 INFO L87 Difference]: Start difference. First operand 8118 states and 9784 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:18,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:18,855 INFO L93 Difference]: Finished difference Result 8863 states and 10958 transitions. [2022-01-10 08:22:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:18,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:18,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:18,876 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:18,876 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:18,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:18,883 INFO L933 BasicCegarLoop]: 683 mSDtfsCounter, 972 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1002 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:18,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1002 Valid, 1440 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:18,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:19,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:19,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.232352010129788) internal successors, (7786), 6500 states have internal predecessors, (7786), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:19,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9777 transitions. [2022-01-10 08:22:19,350 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9777 transitions. Word has length 179 [2022-01-10 08:22:19,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:19,350 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9777 transitions. [2022-01-10 08:22:19,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:19,351 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9777 transitions. [2022-01-10 08:22:19,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:19,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:19,355 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:19,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:19,566 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:19,567 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:19,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:19,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1278892982, now seen corresponding path program 1 times [2022-01-10 08:22:19,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:19,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1619605738] [2022-01-10 08:22:19,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:19,568 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:19,568 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:19,569 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:19,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-01-10 08:22:19,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:19,734 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:19,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:19,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:19,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:19,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:19,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1619605738] [2022-01-10 08:22:19,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1619605738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:19,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:19,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:19,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145936581] [2022-01-10 08:22:19,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:19,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:19,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:19,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:19,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:20,000 INFO L87 Difference]: Start difference. First operand 8118 states and 9777 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:20,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:20,631 INFO L93 Difference]: Finished difference Result 8863 states and 10944 transitions. [2022-01-10 08:22:20,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:20,633 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:20,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:20,652 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:20,652 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:20,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:20,658 INFO L933 BasicCegarLoop]: 680 mSDtfsCounter, 966 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1433 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:20,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [996 Valid, 1433 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:20,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:21,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:21,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.2312440645773979) internal successors, (7779), 6500 states have internal predecessors, (7779), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9770 transitions. [2022-01-10 08:22:21,040 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9770 transitions. Word has length 179 [2022-01-10 08:22:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:21,041 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9770 transitions. [2022-01-10 08:22:21,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9770 transitions. [2022-01-10 08:22:21,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:21,044 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:21,044 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:21,055 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 08:22:21,254 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:21,255 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:21,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:21,255 INFO L85 PathProgramCache]: Analyzing trace with hash 591334606, now seen corresponding path program 1 times [2022-01-10 08:22:21,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:21,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [955595899] [2022-01-10 08:22:21,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:21,256 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:21,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:21,257 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:21,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-01-10 08:22:21,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:21,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:21,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:21,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:21,642 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:21,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [955595899] [2022-01-10 08:22:21,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [955595899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:21,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:21,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:21,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348754668] [2022-01-10 08:22:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:21,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:21,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:21,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:21,644 INFO L87 Difference]: Start difference. First operand 8118 states and 9770 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:22,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:22,284 INFO L93 Difference]: Finished difference Result 8863 states and 10930 transitions. [2022-01-10 08:22:22,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:22,284 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:22,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:22,297 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:22,297 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:22,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:22,300 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 960 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 990 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:22,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [990 Valid, 1426 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:22,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:22,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:22,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.230136119025008) internal successors, (7772), 6500 states have internal predecessors, (7772), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:22,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9763 transitions. [2022-01-10 08:22:22,708 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9763 transitions. Word has length 179 [2022-01-10 08:22:22,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:22,708 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9763 transitions. [2022-01-10 08:22:22,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:22,709 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9763 transitions. [2022-01-10 08:22:22,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:22,712 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:22,712 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:22,720 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Ended with exit code 0 [2022-01-10 08:22:22,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:22,913 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:22,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:22,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1703640118, now seen corresponding path program 1 times [2022-01-10 08:22:22,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:22,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [956268384] [2022-01-10 08:22:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:22,914 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:22,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:22,914 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:22,915 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-01-10 08:22:23,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:23,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:23,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:23,298 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 08:22:23,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:23,299 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:23,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [956268384] [2022-01-10 08:22:23,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [956268384] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:23,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:23,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:23,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091032332] [2022-01-10 08:22:23,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:23,299 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:23,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:23,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:23,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:23,300 INFO L87 Difference]: Start difference. First operand 8118 states and 9763 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:24,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:24,050 INFO L93 Difference]: Finished difference Result 8863 states and 10916 transitions. [2022-01-10 08:22:24,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:24,051 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:24,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:24,066 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:24,066 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:24,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:24,070 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 954 mSDsluCounter, 745 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 984 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:24,070 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [984 Valid, 1419 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:24,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.2290281734726178) internal successors, (7765), 6500 states have internal predecessors, (7765), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:24,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9756 transitions. [2022-01-10 08:22:24,415 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9756 transitions. Word has length 179 [2022-01-10 08:22:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:24,415 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9756 transitions. [2022-01-10 08:22:24,415 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:24,415 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9756 transitions. [2022-01-10 08:22:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:24,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:24,419 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:24,432 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:24,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:24,631 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1317777716, now seen corresponding path program 1 times [2022-01-10 08:22:24,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:24,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1737861318] [2022-01-10 08:22:24,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:24,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:24,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:24,632 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:24,633 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-01-10 08:22:24,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:24,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 492 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:24,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:25,083 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 08:22:25,084 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:25,084 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:25,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1737861318] [2022-01-10 08:22:25,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1737861318] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:25,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:25,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:25,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740621510] [2022-01-10 08:22:25,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:25,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:25,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:25,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:25,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:25,085 INFO L87 Difference]: Start difference. First operand 8118 states and 9756 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:25,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:25,709 INFO L93 Difference]: Finished difference Result 8863 states and 10902 transitions. [2022-01-10 08:22:25,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:25,709 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:25,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:25,724 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:25,724 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:25,728 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:25,728 INFO L933 BasicCegarLoop]: 671 mSDtfsCounter, 948 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 978 SdHoareTripleChecker+Valid, 1412 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:25,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [978 Valid, 1412 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:25,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:26,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:26,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.227920227920228) internal successors, (7758), 6500 states have internal predecessors, (7758), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9749 transitions. [2022-01-10 08:22:26,131 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9749 transitions. Word has length 179 [2022-01-10 08:22:26,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:26,131 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9749 transitions. [2022-01-10 08:22:26,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:26,131 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9749 transitions. [2022-01-10 08:22:26,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:26,134 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:26,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:26,145 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:26,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:26,345 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:26,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:26,345 INFO L85 PathProgramCache]: Analyzing trace with hash 1683182792, now seen corresponding path program 1 times [2022-01-10 08:22:26,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:26,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779420842] [2022-01-10 08:22:26,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:26,346 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:26,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:26,347 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:26,348 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process [2022-01-10 08:22:26,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:26,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:26,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:26,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:26,717 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:26,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:26,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779420842] [2022-01-10 08:22:26,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779420842] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:26,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:26,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:26,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096520262] [2022-01-10 08:22:26,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:26,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:26,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:26,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:26,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:26,719 INFO L87 Difference]: Start difference. First operand 8118 states and 9749 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:27,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:27,348 INFO L93 Difference]: Finished difference Result 8863 states and 10888 transitions. [2022-01-10 08:22:27,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:27,348 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:27,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:27,369 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:27,369 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:27,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:27,375 INFO L933 BasicCegarLoop]: 668 mSDtfsCounter, 941 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 971 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:27,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [971 Valid, 1405 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:22:27,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:27,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:27,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.226812282367838) internal successors, (7751), 6500 states have internal predecessors, (7751), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9742 transitions. [2022-01-10 08:22:27,762 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9742 transitions. Word has length 179 [2022-01-10 08:22:27,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:27,762 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9742 transitions. [2022-01-10 08:22:27,762 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:27,762 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9742 transitions. [2022-01-10 08:22:27,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:27,765 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:27,765 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:27,773 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Ended with exit code 0 [2022-01-10 08:22:27,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:27,966 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:27,966 INFO L85 PathProgramCache]: Analyzing trace with hash -34362940, now seen corresponding path program 1 times [2022-01-10 08:22:27,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:27,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238341254] [2022-01-10 08:22:27,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:27,967 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:27,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:27,968 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:27,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Waiting until timeout for monitored process [2022-01-10 08:22:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:28,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:28,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:28,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:28,346 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:28,346 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:28,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238341254] [2022-01-10 08:22:28,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238341254] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:28,347 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:28,347 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:28,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480848511] [2022-01-10 08:22:28,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:28,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:28,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:28,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:28,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:28,348 INFO L87 Difference]: Start difference. First operand 8118 states and 9742 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:29,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:29,052 INFO L93 Difference]: Finished difference Result 8863 states and 10874 transitions. [2022-01-10 08:22:29,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:29,053 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:29,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:29,070 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:29,070 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:29,075 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:29,076 INFO L933 BasicCegarLoop]: 665 mSDtfsCounter, 935 mSDsluCounter, 733 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 965 SdHoareTripleChecker+Valid, 1398 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:29,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [965 Valid, 1398 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:29,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:29,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:29,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.2257043368154479) internal successors, (7744), 6500 states have internal predecessors, (7744), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:29,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9735 transitions. [2022-01-10 08:22:29,580 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9735 transitions. Word has length 179 [2022-01-10 08:22:29,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:29,580 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9735 transitions. [2022-01-10 08:22:29,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:29,580 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9735 transitions. [2022-01-10 08:22:29,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:29,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:29,583 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:29,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Ended with exit code 0 [2022-01-10 08:22:29,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:29,783 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:29,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:29,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1018611016, now seen corresponding path program 1 times [2022-01-10 08:22:29,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:29,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2111792782] [2022-01-10 08:22:29,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:29,784 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:29,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:29,785 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:29,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-01-10 08:22:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:29,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:29,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:30,162 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 08:22:30,162 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:30,163 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:30,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2111792782] [2022-01-10 08:22:30,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2111792782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:30,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:30,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:30,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348340657] [2022-01-10 08:22:30,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:30,163 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:30,163 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:30,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:30,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:30,164 INFO L87 Difference]: Start difference. First operand 8118 states and 9735 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:30,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:30,952 INFO L93 Difference]: Finished difference Result 8863 states and 10860 transitions. [2022-01-10 08:22:30,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:22:30,953 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:30,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:30,964 INFO L225 Difference]: With dead ends: 8863 [2022-01-10 08:22:30,964 INFO L226 Difference]: Without dead ends: 8118 [2022-01-10 08:22:30,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:30,967 INFO L933 BasicCegarLoop]: 662 mSDtfsCounter, 929 mSDsluCounter, 729 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 959 SdHoareTripleChecker+Valid, 1391 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:30,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [959 Valid, 1391 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:22:30,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8118 states. [2022-01-10 08:22:31,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8118 to 8118. [2022-01-10 08:22:31,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6318 states have (on average 1.224596391263058) internal successors, (7737), 6500 states have internal predecessors, (7737), 837 states have call successors, (837), 679 states have call predecessors, (837), 961 states have return successors, (1154), 940 states have call predecessors, (1154), 834 states have call successors, (1154) [2022-01-10 08:22:31,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9728 transitions. [2022-01-10 08:22:31,362 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9728 transitions. Word has length 179 [2022-01-10 08:22:31,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:31,362 INFO L470 AbstractCegarLoop]: Abstraction has 8118 states and 9728 transitions. [2022-01-10 08:22:31,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:31,362 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9728 transitions. [2022-01-10 08:22:31,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:31,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:31,365 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:31,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 08:22:31,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:31,565 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:31,566 INFO L85 PathProgramCache]: Analyzing trace with hash -887084732, now seen corresponding path program 1 times [2022-01-10 08:22:31,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:31,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1690280451] [2022-01-10 08:22:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:31,566 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:31,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:31,568 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:31,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Waiting until timeout for monitored process [2022-01-10 08:22:31,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:31,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:31,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:31,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:31,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:31,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:31,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1690280451] [2022-01-10 08:22:31,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1690280451] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:31,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:31,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:31,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707744193] [2022-01-10 08:22:31,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:31,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:31,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:31,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:31,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:31,921 INFO L87 Difference]: Start difference. First operand 8118 states and 9728 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:32,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:32,782 INFO L93 Difference]: Finished difference Result 9055 states and 11144 transitions. [2022-01-10 08:22:32,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:32,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:32,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:32,796 INFO L225 Difference]: With dead ends: 9055 [2022-01-10 08:22:32,796 INFO L226 Difference]: Without dead ends: 8310 [2022-01-10 08:22:32,799 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:32,800 INFO L933 BasicCegarLoop]: 659 mSDtfsCounter, 1049 mSDsluCounter, 724 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1079 SdHoareTripleChecker+Valid, 1383 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:32,800 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1079 Valid, 1383 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:32,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2022-01-10 08:22:33,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 8310. [2022-01-10 08:22:33,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8310 states, 6504 states have (on average 1.2287822878228782) internal successors, (7992), 6686 states have internal predecessors, (7992), 839 states have call successors, (839), 683 states have call predecessors, (839), 965 states have return successors, (1156), 942 states have call predecessors, (1156), 836 states have call successors, (1156) [2022-01-10 08:22:33,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8310 states to 8310 states and 9987 transitions. [2022-01-10 08:22:33,173 INFO L78 Accepts]: Start accepts. Automaton has 8310 states and 9987 transitions. Word has length 179 [2022-01-10 08:22:33,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:33,174 INFO L470 AbstractCegarLoop]: Abstraction has 8310 states and 9987 transitions. [2022-01-10 08:22:33,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:33,174 INFO L276 IsEmpty]: Start isEmpty. Operand 8310 states and 9987 transitions. [2022-01-10 08:22:33,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:33,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:33,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:33,184 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 08:22:33,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:33,376 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:33,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:33,377 INFO L85 PathProgramCache]: Analyzing trace with hash -532916792, now seen corresponding path program 1 times [2022-01-10 08:22:33,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:33,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1572359526] [2022-01-10 08:22:33,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:33,377 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:33,383 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:33,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Waiting until timeout for monitored process [2022-01-10 08:22:33,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:33,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:33,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:33,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:33,736 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:33,736 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:33,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1572359526] [2022-01-10 08:22:33,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1572359526] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:33,736 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:33,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:33,736 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085764852] [2022-01-10 08:22:33,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:33,736 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:33,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:33,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:33,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:33,737 INFO L87 Difference]: Start difference. First operand 8310 states and 9987 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:34,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:34,583 INFO L93 Difference]: Finished difference Result 9439 states and 11662 transitions. [2022-01-10 08:22:34,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:34,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:34,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:34,596 INFO L225 Difference]: With dead ends: 9439 [2022-01-10 08:22:34,596 INFO L226 Difference]: Without dead ends: 8502 [2022-01-10 08:22:34,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:34,601 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1042 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 516 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:34,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1072 Valid, 1377 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 516 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:34,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8502 states. [2022-01-10 08:22:34,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8502 to 8502. [2022-01-10 08:22:34,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8502 states, 6690 states have (on average 1.232137518684604) internal successors, (8243), 6872 states have internal predecessors, (8243), 841 states have call successors, (841), 687 states have call predecessors, (841), 969 states have return successors, (1158), 944 states have call predecessors, (1158), 838 states have call successors, (1158) [2022-01-10 08:22:35,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8502 states to 8502 states and 10242 transitions. [2022-01-10 08:22:35,002 INFO L78 Accepts]: Start accepts. Automaton has 8502 states and 10242 transitions. Word has length 179 [2022-01-10 08:22:35,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:35,002 INFO L470 AbstractCegarLoop]: Abstraction has 8502 states and 10242 transitions. [2022-01-10 08:22:35,002 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:35,002 INFO L276 IsEmpty]: Start isEmpty. Operand 8502 states and 10242 transitions. [2022-01-10 08:22:35,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:35,005 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:35,005 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:35,013 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 08:22:35,205 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:35,205 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:35,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:35,206 INFO L85 PathProgramCache]: Analyzing trace with hash -2026875805, now seen corresponding path program 1 times [2022-01-10 08:22:35,206 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:35,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1483709897] [2022-01-10 08:22:35,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:35,206 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:35,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:35,207 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:35,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-01-10 08:22:35,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:35,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:35,343 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:35,561 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 08:22:35,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:35,562 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:35,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1483709897] [2022-01-10 08:22:35,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1483709897] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:35,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:35,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:35,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180599154] [2022-01-10 08:22:35,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:35,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:35,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:35,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:35,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:35,563 INFO L87 Difference]: Start difference. First operand 8502 states and 10242 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:36,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:36,426 INFO L93 Difference]: Finished difference Result 9823 states and 12172 transitions. [2022-01-10 08:22:36,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:36,430 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:36,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:36,444 INFO L225 Difference]: With dead ends: 9823 [2022-01-10 08:22:36,445 INFO L226 Difference]: Without dead ends: 8694 [2022-01-10 08:22:36,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:36,449 INFO L933 BasicCegarLoop]: 652 mSDtfsCounter, 1036 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1368 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:36,449 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1066 Valid, 1368 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:36,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8694 states. [2022-01-10 08:22:36,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8694 to 8694. [2022-01-10 08:22:36,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8694 states, 6876 states have (on average 1.2347294938917976) internal successors, (8490), 7058 states have internal predecessors, (8490), 843 states have call successors, (843), 691 states have call predecessors, (843), 973 states have return successors, (1160), 946 states have call predecessors, (1160), 840 states have call successors, (1160) [2022-01-10 08:22:36,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8694 states to 8694 states and 10493 transitions. [2022-01-10 08:22:36,914 INFO L78 Accepts]: Start accepts. Automaton has 8694 states and 10493 transitions. Word has length 179 [2022-01-10 08:22:36,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:36,914 INFO L470 AbstractCegarLoop]: Abstraction has 8694 states and 10493 transitions. [2022-01-10 08:22:36,914 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:36,914 INFO L276 IsEmpty]: Start isEmpty. Operand 8694 states and 10493 transitions. [2022-01-10 08:22:36,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:36,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:36,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:36,925 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 08:22:37,117 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:37,118 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:37,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:37,118 INFO L85 PathProgramCache]: Analyzing trace with hash 2112110949, now seen corresponding path program 1 times [2022-01-10 08:22:37,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:37,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797049148] [2022-01-10 08:22:37,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:37,119 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:37,119 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:37,120 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:37,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Waiting until timeout for monitored process [2022-01-10 08:22:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:37,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:37,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:37,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:37,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:37,464 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:37,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797049148] [2022-01-10 08:22:37,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797049148] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:37,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:37,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:37,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886621359] [2022-01-10 08:22:37,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:37,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:37,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:37,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:37,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:37,465 INFO L87 Difference]: Start difference. First operand 8694 states and 10493 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:38,322 INFO L93 Difference]: Finished difference Result 10207 states and 12674 transitions. [2022-01-10 08:22:38,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:38,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:38,339 INFO L225 Difference]: With dead ends: 10207 [2022-01-10 08:22:38,339 INFO L226 Difference]: Without dead ends: 8886 [2022-01-10 08:22:38,344 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:38,345 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1029 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1059 SdHoareTripleChecker+Valid, 1361 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:38,345 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1059 Valid, 1361 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:38,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8886 states. [2022-01-10 08:22:38,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8886 to 8886. [2022-01-10 08:22:38,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8886 states, 7062 states have (on average 1.2366185216652505) internal successors, (8733), 7244 states have internal predecessors, (8733), 845 states have call successors, (845), 695 states have call predecessors, (845), 977 states have return successors, (1162), 948 states have call predecessors, (1162), 842 states have call successors, (1162) [2022-01-10 08:22:38,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8886 states to 8886 states and 10740 transitions. [2022-01-10 08:22:38,816 INFO L78 Accepts]: Start accepts. Automaton has 8886 states and 10740 transitions. Word has length 179 [2022-01-10 08:22:38,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:38,817 INFO L470 AbstractCegarLoop]: Abstraction has 8886 states and 10740 transitions. [2022-01-10 08:22:38,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:38,817 INFO L276 IsEmpty]: Start isEmpty. Operand 8886 states and 10740 transitions. [2022-01-10 08:22:38,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:38,820 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:38,820 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:38,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:39,025 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:39,025 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:39,025 INFO L85 PathProgramCache]: Analyzing trace with hash 2098595200, now seen corresponding path program 1 times [2022-01-10 08:22:39,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:39,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1036339051] [2022-01-10 08:22:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:39,026 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:39,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:39,027 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:39,028 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-01-10 08:22:39,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:39,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:39,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:39,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:39,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:39,392 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:39,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1036339051] [2022-01-10 08:22:39,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1036339051] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:39,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:39,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:39,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498532423] [2022-01-10 08:22:39,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:39,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:39,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:39,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:39,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:39,393 INFO L87 Difference]: Start difference. First operand 8886 states and 10740 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:40,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:40,311 INFO L93 Difference]: Finished difference Result 10591 states and 13168 transitions. [2022-01-10 08:22:40,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:40,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:40,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:40,332 INFO L225 Difference]: With dead ends: 10591 [2022-01-10 08:22:40,332 INFO L226 Difference]: Without dead ends: 9078 [2022-01-10 08:22:40,338 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:40,339 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 1021 mSDsluCounter, 708 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1051 SdHoareTripleChecker+Valid, 1354 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:40,339 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1051 Valid, 1354 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 511 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:40,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9078 states. [2022-01-10 08:22:40,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9078 to 9078. [2022-01-10 08:22:40,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9078 states, 7248 states have (on average 1.2378587196467992) internal successors, (8972), 7430 states have internal predecessors, (8972), 847 states have call successors, (847), 699 states have call predecessors, (847), 981 states have return successors, (1164), 950 states have call predecessors, (1164), 844 states have call successors, (1164) [2022-01-10 08:22:40,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9078 states to 9078 states and 10983 transitions. [2022-01-10 08:22:40,861 INFO L78 Accepts]: Start accepts. Automaton has 9078 states and 10983 transitions. Word has length 179 [2022-01-10 08:22:40,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:40,861 INFO L470 AbstractCegarLoop]: Abstraction has 9078 states and 10983 transitions. [2022-01-10 08:22:40,861 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:40,861 INFO L276 IsEmpty]: Start isEmpty. Operand 9078 states and 10983 transitions. [2022-01-10 08:22:40,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:40,864 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:40,864 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:40,872 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Ended with exit code 0 [2022-01-10 08:22:41,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:41,064 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:41,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:41,065 INFO L85 PathProgramCache]: Analyzing trace with hash -546761092, now seen corresponding path program 1 times [2022-01-10 08:22:41,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:41,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [628818146] [2022-01-10 08:22:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:41,065 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:41,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:41,066 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:41,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Waiting until timeout for monitored process [2022-01-10 08:22:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:41,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:41,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:41,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:41,407 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:41,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:41,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [628818146] [2022-01-10 08:22:41,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [628818146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:41,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:41,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:41,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509614939] [2022-01-10 08:22:41,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:41,407 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:41,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:41,408 INFO L87 Difference]: Start difference. First operand 9078 states and 10983 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:42,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:42,321 INFO L93 Difference]: Finished difference Result 10975 states and 13654 transitions. [2022-01-10 08:22:42,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:42,322 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:42,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:42,337 INFO L225 Difference]: With dead ends: 10975 [2022-01-10 08:22:42,337 INFO L226 Difference]: Without dead ends: 9270 [2022-01-10 08:22:42,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:42,342 INFO L933 BasicCegarLoop]: 643 mSDtfsCounter, 1014 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 1347 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:42,342 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1044 Valid, 1347 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 510 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:42,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9270 states. [2022-01-10 08:22:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9270 to 9270. [2022-01-10 08:22:42,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9270 states, 7434 states have (on average 1.238498789346247) internal successors, (9207), 7616 states have internal predecessors, (9207), 849 states have call successors, (849), 703 states have call predecessors, (849), 985 states have return successors, (1166), 952 states have call predecessors, (1166), 846 states have call successors, (1166) [2022-01-10 08:22:42,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9270 states to 9270 states and 11222 transitions. [2022-01-10 08:22:42,947 INFO L78 Accepts]: Start accepts. Automaton has 9270 states and 11222 transitions. Word has length 179 [2022-01-10 08:22:42,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:42,947 INFO L470 AbstractCegarLoop]: Abstraction has 9270 states and 11222 transitions. [2022-01-10 08:22:42,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:42,947 INFO L276 IsEmpty]: Start isEmpty. Operand 9270 states and 11222 transitions. [2022-01-10 08:22:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:42,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:42,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:42,957 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 08:22:43,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:43,150 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:43,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:43,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1408668127, now seen corresponding path program 1 times [2022-01-10 08:22:43,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:43,151 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1395965666] [2022-01-10 08:22:43,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:43,151 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:43,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:43,152 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:43,152 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-01-10 08:22:43,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:43,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 470 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:43,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:43,498 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 08:22:43,498 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:43,498 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:43,498 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1395965666] [2022-01-10 08:22:43,498 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1395965666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:43,498 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:43,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:43,499 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884006557] [2022-01-10 08:22:43,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:43,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:43,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:43,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:43,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:43,500 INFO L87 Difference]: Start difference. First operand 9270 states and 11222 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:44,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:44,479 INFO L93 Difference]: Finished difference Result 11359 states and 14132 transitions. [2022-01-10 08:22:44,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:44,480 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:44,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:44,498 INFO L225 Difference]: With dead ends: 11359 [2022-01-10 08:22:44,499 INFO L226 Difference]: Without dead ends: 9462 [2022-01-10 08:22:44,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:44,503 INFO L933 BasicCegarLoop]: 640 mSDtfsCounter, 1007 mSDsluCounter, 700 mSDsCounter, 0 mSdLazyCounter, 509 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1037 SdHoareTripleChecker+Valid, 1340 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:44,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1037 Valid, 1340 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 509 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:44,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9462 states. [2022-01-10 08:22:44,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9462 to 9462. [2022-01-10 08:22:44,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9462 states, 7620 states have (on average 1.2385826771653543) internal successors, (9438), 7802 states have internal predecessors, (9438), 851 states have call successors, (851), 707 states have call predecessors, (851), 989 states have return successors, (1168), 954 states have call predecessors, (1168), 848 states have call successors, (1168) [2022-01-10 08:22:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9462 states to 9462 states and 11457 transitions. [2022-01-10 08:22:45,017 INFO L78 Accepts]: Start accepts. Automaton has 9462 states and 11457 transitions. Word has length 179 [2022-01-10 08:22:45,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:45,017 INFO L470 AbstractCegarLoop]: Abstraction has 9462 states and 11457 transitions. [2022-01-10 08:22:45,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:45,017 INFO L276 IsEmpty]: Start isEmpty. Operand 9462 states and 11457 transitions. [2022-01-10 08:22:45,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:45,020 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:45,020 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:45,027 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Ended with exit code 0 [2022-01-10 08:22:45,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:45,220 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:45,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:45,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1888596443, now seen corresponding path program 1 times [2022-01-10 08:22:45,221 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:45,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2137930143] [2022-01-10 08:22:45,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:45,221 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:45,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:45,222 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:45,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (37)] Waiting until timeout for monitored process [2022-01-10 08:22:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:45,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 468 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:45,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:45,622 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 08:22:45,622 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:45,622 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:45,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2137930143] [2022-01-10 08:22:45,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2137930143] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:45,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:45,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:45,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616954137] [2022-01-10 08:22:45,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:45,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:45,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:45,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:45,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:45,624 INFO L87 Difference]: Start difference. First operand 9462 states and 11457 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:46,702 INFO L93 Difference]: Finished difference Result 11743 states and 14602 transitions. [2022-01-10 08:22:46,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:46,719 INFO L225 Difference]: With dead ends: 11743 [2022-01-10 08:22:46,720 INFO L226 Difference]: Without dead ends: 9654 [2022-01-10 08:22:46,724 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:46,725 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 1000 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 1333 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:46,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1030 Valid, 1333 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:46,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9654 states. [2022-01-10 08:22:47,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9654 to 9654. [2022-01-10 08:22:47,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9654 states, 7806 states have (on average 1.238150140917243) internal successors, (9665), 7988 states have internal predecessors, (9665), 853 states have call successors, (853), 711 states have call predecessors, (853), 993 states have return successors, (1170), 956 states have call predecessors, (1170), 850 states have call successors, (1170) [2022-01-10 08:22:47,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9654 states to 9654 states and 11688 transitions. [2022-01-10 08:22:47,320 INFO L78 Accepts]: Start accepts. Automaton has 9654 states and 11688 transitions. Word has length 179 [2022-01-10 08:22:47,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:47,320 INFO L470 AbstractCegarLoop]: Abstraction has 9654 states and 11688 transitions. [2022-01-10 08:22:47,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:47,320 INFO L276 IsEmpty]: Start isEmpty. Operand 9654 states and 11688 transitions. [2022-01-10 08:22:47,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:47,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:47,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:47,333 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 08:22:47,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:47,523 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:47,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:47,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2144021314, now seen corresponding path program 1 times [2022-01-10 08:22:47,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:47,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2072876231] [2022-01-10 08:22:47,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:47,524 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:47,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:47,525 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:47,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-01-10 08:22:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:47,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 465 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:47,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:47,884 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 08:22:47,885 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:47,885 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:47,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2072876231] [2022-01-10 08:22:47,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2072876231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:47,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:47,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:47,885 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705388391] [2022-01-10 08:22:47,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:47,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:47,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:47,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:47,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:47,887 INFO L87 Difference]: Start difference. First operand 9654 states and 11688 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:48,941 INFO L93 Difference]: Finished difference Result 12127 states and 15064 transitions. [2022-01-10 08:22:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:22:48,942 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-01-10 08:22:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:48,957 INFO L225 Difference]: With dead ends: 12127 [2022-01-10 08:22:48,957 INFO L226 Difference]: Without dead ends: 9846 [2022-01-10 08:22:48,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 175 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 08:22:48,961 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 993 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 1326 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:48,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1023 Valid, 1326 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:48,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9846 states. [2022-01-10 08:22:49,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9846 to 9846. [2022-01-10 08:22:49,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9846 states, 7992 states have (on average 1.2372372372372373) internal successors, (9888), 8174 states have internal predecessors, (9888), 855 states have call successors, (855), 715 states have call predecessors, (855), 997 states have return successors, (1172), 958 states have call predecessors, (1172), 852 states have call successors, (1172) [2022-01-10 08:22:49,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9846 states to 9846 states and 11915 transitions. [2022-01-10 08:22:49,548 INFO L78 Accepts]: Start accepts. Automaton has 9846 states and 11915 transitions. Word has length 179 [2022-01-10 08:22:49,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:49,549 INFO L470 AbstractCegarLoop]: Abstraction has 9846 states and 11915 transitions. [2022-01-10 08:22:49,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:22:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 9846 states and 11915 transitions. [2022-01-10 08:22:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-01-10 08:22:49,552 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:49,552 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:22:49,562 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:49,758 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:22:49,758 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:49,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:49,759 INFO L85 PathProgramCache]: Analyzing trace with hash 399492026, now seen corresponding path program 1 times [2022-01-10 08:22:49,759 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:49,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589180546] [2022-01-10 08:22:49,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:49,759 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:49,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:49,760 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:22:49,761 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Waiting until timeout for monitored process [2022-01-10 08:22:49,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:49,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:22:49,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:50,114 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 08:22:50,114 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:50,114 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:50,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589180546] [2022-01-10 08:22:50,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589180546] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:50,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:50,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:22:50,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089831477] [2022-01-10 08:22:50,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:50,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:50,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:50,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:50,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:50,116 INFO L87 Difference]: Start difference. First operand 9846 states and 11915 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)