/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_3.cil+token_ring.13.cil-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:24:30,259 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:24:30,261 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:24:30,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:24:30,318 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:24:30,321 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:24:30,323 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:24:30,331 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:24:30,332 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:24:30,337 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:24:30,338 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:24:30,338 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:24:30,339 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:24:30,340 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:24:30,341 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:24:30,342 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:24:30,343 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:24:30,343 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:24:30,347 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:24:30,349 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:24:30,349 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:24:30,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:24:30,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:24:30,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:24:30,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 08:24:30,363 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:24:30,364 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:24:30,364 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:24:30,365 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 08:24:30,392 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:24:30,392 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:24:30,393 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:24:30,393 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:24:30,393 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:24:30,393 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:24:30,394 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:24:30,394 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:24:30,394 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:24:30,394 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:24:30,395 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:24:30,396 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:24:30,396 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:24:30,396 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:24:30,396 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:24:30,396 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:24:30,396 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:30,397 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:24:30,397 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:24:30,397 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:24:30,397 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:24:30,398 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:24:30,398 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:24:30,398 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:24:30,398 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:24:30,398 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:24:30,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:24:30,566 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:24:30,584 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:24:30,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:24:30,586 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:24:30,589 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:24:30,590 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-01-10 08:24:30,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9feed5/e903f388123047508217ce560d2fba17/FLAG338b20e47 [2022-01-10 08:24:31,041 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:24:31,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-01-10 08:24:31,056 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9feed5/e903f388123047508217ce560d2fba17/FLAG338b20e47 [2022-01-10 08:24:31,067 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48e9feed5/e903f388123047508217ce560d2fba17 [2022-01-10 08:24:31,069 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:24:31,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:24:31,071 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:31,071 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:24:31,073 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:24:31,073 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,074 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6490705 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31, skipping insertion in model container [2022-01-10 08:24:31,074 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:24:31,108 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:24:31,245 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-01-10 08:24:31,295 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-01-10 08:24:31,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:31,370 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:24:31,381 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_3.cil+token_ring.13.cil-1.c[911,924] [2022-01-10 08:24:31,393 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_3.cil+token_ring.13.cil-1.c[8416,8429] [2022-01-10 08:24:31,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:24:31,446 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:24:31,446 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31 WrapperNode [2022-01-10 08:24:31,446 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:24:31,448 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:31,449 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:24:31,449 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:24:31,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,464 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,497 INFO L137 Inliner]: procedures = 82, calls = 101, calls flagged for inlining = 49, calls inlined = 49, statements flattened = 1098 [2022-01-10 08:24:31,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:24:31,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:24:31,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:24:31,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:24:31,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,516 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,516 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:24:31,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:24:31,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:24:31,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:24:31,558 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (1/1) ... [2022-01-10 08:24:31,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:24:31,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:24:31,592 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 08:24:31,599 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 08:24:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:24:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:24:31,617 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:24:31,617 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:24:31,617 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:24:31,618 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:24:31,618 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:24:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:24:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:24:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:24:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:24:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:24:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:24:31,619 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:24:31,619 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:24:31,620 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:24:31,620 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:24:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:24:31,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:24:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:24:31,621 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:24:31,621 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 08:24:31,621 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 08:24:31,735 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:24:31,736 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:24:32,353 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2022-01-10 08:24:32,353 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1bv32 == ~q_free~0;~c_dr_st~0 := 2bv32;~c_dr_pc~0 := 2bv32;~a_t~0 := do_read_c_~a~0#1; [2022-01-10 08:24:32,417 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:24:32,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:24:32,431 INFO L299 CfgBuilder]: Removed 20 assume(true) statements. [2022-01-10 08:24:32,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:32 BoogieIcfgContainer [2022-01-10 08:24:32,433 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:24:32,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:24:32,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:24:32,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:24:32,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:24:31" (1/3) ... [2022-01-10 08:24:32,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c697438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:32, skipping insertion in model container [2022-01-10 08:24:32,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:24:31" (2/3) ... [2022-01-10 08:24:32,439 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c697438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:24:32, skipping insertion in model container [2022-01-10 08:24:32,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:24:32" (3/3) ... [2022-01-10 08:24:32,440 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.13.cil-1.c [2022-01-10 08:24:32,443 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:24:32,444 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:24:32,491 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:24:32,496 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 08:24:32,497 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:24:32,533 INFO L276 IsEmpty]: Start isEmpty. Operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) [2022-01-10 08:24:32,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:32,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:32,540 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 08:24:32,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:32,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:32,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1984097588, now seen corresponding path program 1 times [2022-01-10 08:24:32,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:32,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1016436579] [2022-01-10 08:24:32,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:32,554 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:32,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:32,557 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 08:24:32,561 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 08:24:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:32,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-10 08:24:32,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:32,901 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 08:24:32,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:32,901 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:32,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1016436579] [2022-01-10 08:24:32,902 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1016436579] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:32,902 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:32,902 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:24:32,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144508889] [2022-01-10 08:24:32,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:32,908 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:32,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:32,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:32,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:32,931 INFO L87 Difference]: Start difference. First operand has 532 states, 469 states have (on average 1.6460554371002132) internal successors, (772), 477 states have internal predecessors, (772), 45 states have call successors, (45), 15 states have call predecessors, (45), 15 states have return successors, (45), 43 states have call predecessors, (45), 45 states have call successors, (45) 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 08:24:33,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:33,800 INFO L93 Difference]: Finished difference Result 1153 states and 1861 transitions. [2022-01-10 08:24:33,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:33,803 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 08:24:33,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:33,821 INFO L225 Difference]: With dead ends: 1153 [2022-01-10 08:24:33,821 INFO L226 Difference]: Without dead ends: 640 [2022-01-10 08:24:33,828 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 08:24:33,834 INFO L933 BasicCegarLoop]: 817 mSDtfsCounter, 538 mSDsluCounter, 1239 mSDsCounter, 0 mSdLazyCounter, 885 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 2056 SdHoareTripleChecker+Invalid, 955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 885 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:33,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 2056 Invalid, 955 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 885 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 08:24:33,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 640 states. [2022-01-10 08:24:33,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 640 to 633. [2022-01-10 08:24:33,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 633 states, 551 states have (on average 1.5372050816696914) internal successors, (847), 558 states have internal predecessors, (847), 58 states have call successors, (58), 22 states have call predecessors, (58), 22 states have return successors, (59), 55 states have call predecessors, (59), 54 states have call successors, (59) [2022-01-10 08:24:33,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 633 states to 633 states and 964 transitions. [2022-01-10 08:24:33,896 INFO L78 Accepts]: Start accepts. Automaton has 633 states and 964 transitions. Word has length 65 [2022-01-10 08:24:33,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:33,896 INFO L470 AbstractCegarLoop]: Abstraction has 633 states and 964 transitions. [2022-01-10 08:24:33,896 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 08:24:33,896 INFO L276 IsEmpty]: Start isEmpty. Operand 633 states and 964 transitions. [2022-01-10 08:24:33,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:24:33,899 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:33,899 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 08:24:33,911 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 08:24:34,106 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 08:24:34,107 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:34,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:34,107 INFO L85 PathProgramCache]: Analyzing trace with hash -631981068, now seen corresponding path program 1 times [2022-01-10 08:24:34,108 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:34,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [373792660] [2022-01-10 08:24:34,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:34,108 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:34,108 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:34,109 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 08:24:34,111 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 08:24:34,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:34,210 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:34,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:34,314 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 08:24:34,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:34,315 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:34,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [373792660] [2022-01-10 08:24:34,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [373792660] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:34,318 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:34,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:34,319 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055134937] [2022-01-10 08:24:34,319 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:34,320 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:34,320 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:34,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:34,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:34,321 INFO L87 Difference]: Start difference. First operand 633 states and 964 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:34,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:34,372 INFO L93 Difference]: Finished difference Result 1035 states and 1524 transitions. [2022-01-10 08:24:34,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:34,372 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 08:24:34,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:34,379 INFO L225 Difference]: With dead ends: 1035 [2022-01-10 08:24:34,379 INFO L226 Difference]: Without dead ends: 826 [2022-01-10 08:24:34,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 63 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 08:24:34,381 INFO L933 BasicCegarLoop]: 837 mSDtfsCounter, 770 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 770 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:34,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [770 Valid, 966 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:34,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-01-10 08:24:34,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 818. [2022-01-10 08:24:34,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 818 states, 700 states have (on average 1.5042857142857142) internal successors, (1053), 709 states have internal predecessors, (1053), 78 states have call successors, (78), 36 states have call predecessors, (78), 38 states have return successors, (82), 75 states have call predecessors, (82), 74 states have call successors, (82) [2022-01-10 08:24:34,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1213 transitions. [2022-01-10 08:24:34,418 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1213 transitions. Word has length 65 [2022-01-10 08:24:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:34,419 INFO L470 AbstractCegarLoop]: Abstraction has 818 states and 1213 transitions. [2022-01-10 08:24:34,419 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:34,419 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1213 transitions. [2022-01-10 08:24:34,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:34,421 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:34,421 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 08:24:34,428 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 08:24:34,628 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 08:24:34,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:34,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:34,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1785973121, now seen corresponding path program 1 times [2022-01-10 08:24:34,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [172138444] [2022-01-10 08:24:34,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:34,632 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:34,632 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:34,633 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 08:24:34,633 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 08:24:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:34,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:34,827 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 08:24:34,827 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:34,827 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:34,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [172138444] [2022-01-10 08:24:34,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [172138444] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:34,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:34,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:34,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962328734] [2022-01-10 08:24:34,828 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:34,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:34,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:34,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:34,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:34,829 INFO L87 Difference]: Start difference. First operand 818 states and 1213 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 08:24:34,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:34,871 INFO L93 Difference]: Finished difference Result 1232 states and 1790 transitions. [2022-01-10 08:24:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:34,872 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-01-10 08:24:34,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:34,875 INFO L225 Difference]: With dead ends: 1232 [2022-01-10 08:24:34,875 INFO L226 Difference]: Without dead ends: 838 [2022-01-10 08:24:34,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 61 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 08:24:34,877 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 7 mSDsluCounter, 3213 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 4018 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:34,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 4018 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:34,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 838 states. [2022-01-10 08:24:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 838 to 828. [2022-01-10 08:24:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 828 states, 708 states have (on average 1.4957627118644068) internal successors, (1059), 717 states have internal predecessors, (1059), 78 states have call successors, (78), 36 states have call predecessors, (78), 40 states have return successors, (84), 77 states have call predecessors, (84), 74 states have call successors, (84) [2022-01-10 08:24:34,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 828 states to 828 states and 1221 transitions. [2022-01-10 08:24:34,901 INFO L78 Accepts]: Start accepts. Automaton has 828 states and 1221 transitions. Word has length 66 [2022-01-10 08:24:34,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:34,902 INFO L470 AbstractCegarLoop]: Abstraction has 828 states and 1221 transitions. [2022-01-10 08:24:34,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 5 states have internal predecessors, (51), 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 08:24:34,902 INFO L276 IsEmpty]: Start isEmpty. Operand 828 states and 1221 transitions. [2022-01-10 08:24:34,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:24:34,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:34,903 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 08:24:34,912 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-01-10 08:24:35,112 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 08:24:35,112 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:35,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:35,113 INFO L85 PathProgramCache]: Analyzing trace with hash 1479634877, now seen corresponding path program 1 times [2022-01-10 08:24:35,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:35,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2027412281] [2022-01-10 08:24:35,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:35,114 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:35,114 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:35,114 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 08:24:35,115 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 08:24:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:35,209 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:35,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:35,331 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 08:24:35,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:35,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:35,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2027412281] [2022-01-10 08:24:35,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2027412281] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:35,332 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:35,332 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:35,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238799617] [2022-01-10 08:24:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:35,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:35,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:35,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:35,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:35,335 INFO L87 Difference]: Start difference. First operand 828 states and 1221 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:35,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:35,382 INFO L93 Difference]: Finished difference Result 1598 states and 2269 transitions. [2022-01-10 08:24:35,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:35,383 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 08:24:35,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:35,388 INFO L225 Difference]: With dead ends: 1598 [2022-01-10 08:24:35,388 INFO L226 Difference]: Without dead ends: 1194 [2022-01-10 08:24:35,390 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 08:24:35,393 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 756 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:35,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [756 Valid, 945 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:35,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1194 states. [2022-01-10 08:24:35,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1194 to 1186. [2022-01-10 08:24:35,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1186 states, 992 states have (on average 1.4495967741935485) internal successors, (1438), 1005 states have internal predecessors, (1438), 118 states have call successors, (118), 64 states have call predecessors, (118), 74 states have return successors, (132), 119 states have call predecessors, (132), 114 states have call successors, (132) [2022-01-10 08:24:35,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1186 states to 1186 states and 1688 transitions. [2022-01-10 08:24:35,442 INFO L78 Accepts]: Start accepts. Automaton has 1186 states and 1688 transitions. Word has length 66 [2022-01-10 08:24:35,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:35,443 INFO L470 AbstractCegarLoop]: Abstraction has 1186 states and 1688 transitions. [2022-01-10 08:24:35,443 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:24:35,443 INFO L276 IsEmpty]: Start isEmpty. Operand 1186 states and 1688 transitions. [2022-01-10 08:24:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:35,445 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:35,445 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:24:35,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-01-10 08:24:35,652 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 08:24:35,652 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:35,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1090562058, now seen corresponding path program 1 times [2022-01-10 08:24:35,654 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:35,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [784531146] [2022-01-10 08:24:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:35,654 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:35,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:35,655 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 08:24:35,656 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 08:24:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:35,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:35,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-01-10 08:24:35,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:35,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:35,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [784531146] [2022-01-10 08:24:35,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [784531146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:35,872 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:35,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:35,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483494340] [2022-01-10 08:24:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:35,872 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:35,872 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:35,873 INFO L87 Difference]: Start difference. First operand 1186 states and 1688 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 08:24:35,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:35,918 INFO L93 Difference]: Finished difference Result 1976 states and 2756 transitions. [2022-01-10 08:24:35,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:35,919 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 83 [2022-01-10 08:24:35,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:35,923 INFO L225 Difference]: With dead ends: 1976 [2022-01-10 08:24:35,923 INFO L226 Difference]: Without dead ends: 1214 [2022-01-10 08:24:35,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 78 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 08:24:35,925 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 4 mSDsluCounter, 3206 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 4009 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:35,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 4009 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:35,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2022-01-10 08:24:35,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1206. [2022-01-10 08:24:35,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1206 states, 1008 states have (on average 1.4384920634920635) internal successors, (1450), 1021 states have internal predecessors, (1450), 118 states have call successors, (118), 64 states have call predecessors, (118), 78 states have return successors, (136), 123 states have call predecessors, (136), 114 states have call successors, (136) [2022-01-10 08:24:35,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1206 states to 1206 states and 1704 transitions. [2022-01-10 08:24:35,959 INFO L78 Accepts]: Start accepts. Automaton has 1206 states and 1704 transitions. Word has length 83 [2022-01-10 08:24:35,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:35,959 INFO L470 AbstractCegarLoop]: Abstraction has 1206 states and 1704 transitions. [2022-01-10 08:24:35,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 5 states have internal predecessors, (56), 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 08:24:35,960 INFO L276 IsEmpty]: Start isEmpty. Operand 1206 states and 1704 transitions. [2022-01-10 08:24:35,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:24:35,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:35,961 INFO L514 BasicCegarLoop]: trace histogram [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] [2022-01-10 08:24:35,968 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 08:24:36,168 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 08:24:36,168 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:36,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:36,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1984048396, now seen corresponding path program 1 times [2022-01-10 08:24:36,169 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:36,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1100664068] [2022-01-10 08:24:36,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:36,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:36,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:36,170 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 08:24:36,171 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 08:24:36,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:36,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:36,250 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:36,366 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-10 08:24:36,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:36,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:36,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1100664068] [2022-01-10 08:24:36,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1100664068] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:36,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:36,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:36,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964294604] [2022-01-10 08:24:36,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:36,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:24:36,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:36,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:24:36,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:24:36,368 INFO L87 Difference]: Start difference. First operand 1206 states and 1704 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 08:24:36,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:36,659 INFO L93 Difference]: Finished difference Result 2748 states and 3773 transitions. [2022-01-10 08:24:36,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:36,660 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 83 [2022-01-10 08:24:36,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:36,667 INFO L225 Difference]: With dead ends: 2748 [2022-01-10 08:24:36,667 INFO L226 Difference]: Without dead ends: 1968 [2022-01-10 08:24:36,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 81 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 08:24:36,670 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 1118 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:36,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 1223 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:24:36,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2022-01-10 08:24:36,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 1964. [2022-01-10 08:24:36,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1964 states, 1600 states have (on average 1.385) internal successors, (2216), 1625 states have internal predecessors, (2216), 208 states have call successors, (208), 120 states have call predecessors, (208), 154 states have return successors, (281), 223 states have call predecessors, (281), 204 states have call successors, (281) [2022-01-10 08:24:36,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1964 states to 1964 states and 2705 transitions. [2022-01-10 08:24:36,723 INFO L78 Accepts]: Start accepts. Automaton has 1964 states and 2705 transitions. Word has length 83 [2022-01-10 08:24:36,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:36,723 INFO L470 AbstractCegarLoop]: Abstraction has 1964 states and 2705 transitions. [2022-01-10 08:24:36,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 08:24:36,723 INFO L276 IsEmpty]: Start isEmpty. Operand 1964 states and 2705 transitions. [2022-01-10 08:24:36,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 08:24:36,725 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:36,725 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, 1] [2022-01-10 08:24:36,743 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 08:24:36,937 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 08:24:36,937 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:36,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:36,938 INFO L85 PathProgramCache]: Analyzing trace with hash -540715936, now seen corresponding path program 1 times [2022-01-10 08:24:36,938 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:36,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [145312285] [2022-01-10 08:24:36,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:36,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:36,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:36,940 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 08:24:36,941 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 08:24:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:37,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:37,026 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:37,102 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 08:24:37,102 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:37,102 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:37,102 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [145312285] [2022-01-10 08:24:37,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [145312285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:37,102 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:37,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:37,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249378700] [2022-01-10 08:24:37,102 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:37,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:37,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:37,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:37,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:37,104 INFO L87 Difference]: Start difference. First operand 1964 states and 2705 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 08:24:37,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:37,205 INFO L93 Difference]: Finished difference Result 4936 states and 6646 transitions. [2022-01-10 08:24:37,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:37,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 85 [2022-01-10 08:24:37,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:37,217 INFO L225 Difference]: With dead ends: 4936 [2022-01-10 08:24:37,218 INFO L226 Difference]: Without dead ends: 2708 [2022-01-10 08:24:37,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 83 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 08:24:37,224 INFO L933 BasicCegarLoop]: 923 mSDtfsCounter, 116 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1720 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 08:24:37,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 1720 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:37,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2708 states. [2022-01-10 08:24:37,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2708 to 2708. [2022-01-10 08:24:37,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2708 states, 2184 states have (on average 1.3626373626373627) internal successors, (2976), 2217 states have internal predecessors, (2976), 290 states have call successors, (290), 176 states have call predecessors, (290), 232 states have return successors, (425), 319 states have call predecessors, (425), 286 states have call successors, (425) [2022-01-10 08:24:37,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2708 states to 2708 states and 3691 transitions. [2022-01-10 08:24:37,304 INFO L78 Accepts]: Start accepts. Automaton has 2708 states and 3691 transitions. Word has length 85 [2022-01-10 08:24:37,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:37,304 INFO L470 AbstractCegarLoop]: Abstraction has 2708 states and 3691 transitions. [2022-01-10 08:24:37,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 08:24:37,304 INFO L276 IsEmpty]: Start isEmpty. Operand 2708 states and 3691 transitions. [2022-01-10 08:24:37,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 08:24:37,310 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:37,310 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:37,317 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 08:24:37,517 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 08:24:37,517 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:37,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:37,518 INFO L85 PathProgramCache]: Analyzing trace with hash -63643044, now seen corresponding path program 1 times [2022-01-10 08:24:37,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:37,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1601386056] [2022-01-10 08:24:37,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:37,519 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:37,519 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:37,519 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 08:24:37,521 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 08:24:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:37,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:24:37,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-01-10 08:24:37,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:37,811 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:37,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1601386056] [2022-01-10 08:24:37,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1601386056] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:37,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:37,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:24:37,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747061336] [2022-01-10 08:24:37,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:37,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:24:37,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:37,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:24:37,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:24:37,813 INFO L87 Difference]: Start difference. First operand 2708 states and 3691 transitions. Second operand has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 08:24:37,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:37,897 INFO L93 Difference]: Finished difference Result 5063 states and 6856 transitions. [2022-01-10 08:24:37,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:24:37,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 155 [2022-01-10 08:24:37,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:37,910 INFO L225 Difference]: With dead ends: 5063 [2022-01-10 08:24:37,910 INFO L226 Difference]: Without dead ends: 2791 [2022-01-10 08:24:37,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:24:37,915 INFO L933 BasicCegarLoop]: 805 mSDtfsCounter, 37 mSDsluCounter, 3211 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 4016 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:37,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 4016 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:37,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2791 states. [2022-01-10 08:24:38,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2791 to 2517. [2022-01-10 08:24:38,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2517 states, 2065 states have (on average 1.3506053268765132) internal successors, (2789), 2079 states have internal predecessors, (2789), 242 states have call successors, (242), 151 states have call predecessors, (242), 208 states have return successors, (382), 291 states have call predecessors, (382), 238 states have call successors, (382) [2022-01-10 08:24:38,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2517 states to 2517 states and 3413 transitions. [2022-01-10 08:24:38,031 INFO L78 Accepts]: Start accepts. Automaton has 2517 states and 3413 transitions. Word has length 155 [2022-01-10 08:24:38,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:38,032 INFO L470 AbstractCegarLoop]: Abstraction has 2517 states and 3413 transitions. [2022-01-10 08:24:38,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.333333333333332) internal successors, (110), 5 states have internal predecessors, (110), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-01-10 08:24:38,032 INFO L276 IsEmpty]: Start isEmpty. Operand 2517 states and 3413 transitions. [2022-01-10 08:24:38,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 08:24:38,038 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:38,039 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 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] [2022-01-10 08:24:38,048 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 08:24:38,246 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 08:24:38,246 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:38,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:38,247 INFO L85 PathProgramCache]: Analyzing trace with hash 1730049720, now seen corresponding path program 1 times [2022-01-10 08:24:38,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:38,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1314529445] [2022-01-10 08:24:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:38,248 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:38,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:38,249 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 08:24:38,267 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 08:24:38,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:38,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 354 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:38,351 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:38,558 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-01-10 08:24:38,559 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:38,559 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:38,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1314529445] [2022-01-10 08:24:38,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1314529445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:38,559 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:38,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:38,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586527209] [2022-01-10 08:24:38,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:38,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:38,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:38,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:38,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:38,560 INFO L87 Difference]: Start difference. First operand 2517 states and 3413 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:38,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:38,606 INFO L93 Difference]: Finished difference Result 3761 states and 5040 transitions. [2022-01-10 08:24:38,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:38,607 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 156 [2022-01-10 08:24:38,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:38,613 INFO L225 Difference]: With dead ends: 3761 [2022-01-10 08:24:38,613 INFO L226 Difference]: Without dead ends: 1700 [2022-01-10 08:24:38,618 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 154 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 08:24:38,618 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 148 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 1451 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 08:24:38,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 1451 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:38,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1700 states. [2022-01-10 08:24:38,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1700 to 1700. [2022-01-10 08:24:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1700 states, 1410 states have (on average 1.376595744680851) internal successors, (1941), 1420 states have internal predecessors, (1941), 154 states have call successors, (154), 95 states have call predecessors, (154), 134 states have return successors, (240), 185 states have call predecessors, (240), 150 states have call successors, (240) [2022-01-10 08:24:38,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1700 states to 1700 states and 2335 transitions. [2022-01-10 08:24:38,661 INFO L78 Accepts]: Start accepts. Automaton has 1700 states and 2335 transitions. Word has length 156 [2022-01-10 08:24:38,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:38,661 INFO L470 AbstractCegarLoop]: Abstraction has 1700 states and 2335 transitions. [2022-01-10 08:24:38,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-01-10 08:24:38,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1700 states and 2335 transitions. [2022-01-10 08:24:38,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:24:38,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:38,665 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:38,672 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 08:24:38,872 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 08:24:38,872 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:38,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:38,872 INFO L85 PathProgramCache]: Analyzing trace with hash -511000127, now seen corresponding path program 1 times [2022-01-10 08:24:38,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:38,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1174324604] [2022-01-10 08:24:38,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:38,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:38,873 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:38,874 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 08:24:38,895 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 08:24:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:38,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:38,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:39,191 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-01-10 08:24:39,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:39,191 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:39,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1174324604] [2022-01-10 08:24:39,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1174324604] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:39,191 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:39,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:39,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916537250] [2022-01-10 08:24:39,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:39,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:39,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:39,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:39,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:39,193 INFO L87 Difference]: Start difference. First operand 1700 states and 2335 transitions. Second operand has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:39,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,252 INFO L93 Difference]: Finished difference Result 3690 states and 5013 transitions. [2022-01-10 08:24:39,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:39,253 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 159 [2022-01-10 08:24:39,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,261 INFO L225 Difference]: With dead ends: 3690 [2022-01-10 08:24:39,262 INFO L226 Difference]: Without dead ends: 2558 [2022-01-10 08:24:39,264 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 157 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 08:24:39,265 INFO L933 BasicCegarLoop]: 830 mSDtfsCounter, 68 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 1613 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:39,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 1613 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:39,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2558 states. [2022-01-10 08:24:39,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2558 to 2542. [2022-01-10 08:24:39,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2542 states, 2095 states have (on average 1.356563245823389) internal successors, (2842), 2111 states have internal predecessors, (2842), 232 states have call successors, (232), 149 states have call predecessors, (232), 213 states have return successors, (375), 282 states have call predecessors, (375), 228 states have call successors, (375) [2022-01-10 08:24:39,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2542 states to 2542 states and 3449 transitions. [2022-01-10 08:24:39,352 INFO L78 Accepts]: Start accepts. Automaton has 2542 states and 3449 transitions. Word has length 159 [2022-01-10 08:24:39,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:39,352 INFO L470 AbstractCegarLoop]: Abstraction has 2542 states and 3449 transitions. [2022-01-10 08:24:39,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.666666666666664) internal successors, (104), 3 states have internal predecessors, (104), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 08:24:39,352 INFO L276 IsEmpty]: Start isEmpty. Operand 2542 states and 3449 transitions. [2022-01-10 08:24:39,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 08:24:39,355 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:39,355 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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 08:24:39,365 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 08:24:39,562 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 08:24:39,563 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:39,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:39,563 INFO L85 PathProgramCache]: Analyzing trace with hash -159437718, now seen corresponding path program 1 times [2022-01-10 08:24:39,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:39,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2109124404] [2022-01-10 08:24:39,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:39,564 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:39,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:39,565 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 08:24:39,567 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 08:24:39,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:39,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:39,675 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:39,891 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 86 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 08:24:39,891 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:39,892 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:39,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2109124404] [2022-01-10 08:24:39,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2109124404] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:39,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:39,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:39,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461184383] [2022-01-10 08:24:39,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:39,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:39,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:39,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:39,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:39,893 INFO L87 Difference]: Start difference. First operand 2542 states and 3449 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:39,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:39,980 INFO L93 Difference]: Finished difference Result 6271 states and 8601 transitions. [2022-01-10 08:24:39,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:39,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 160 [2022-01-10 08:24:39,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:39,996 INFO L225 Difference]: With dead ends: 6271 [2022-01-10 08:24:39,996 INFO L226 Difference]: Without dead ends: 4297 [2022-01-10 08:24:40,003 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 158 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 08:24:40,004 INFO L933 BasicCegarLoop]: 875 mSDtfsCounter, 102 mSDsluCounter, 787 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 1662 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:40,004 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 1662 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:40,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4297 states. [2022-01-10 08:24:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4297 to 4257. [2022-01-10 08:24:40,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4257 states, 3481 states have (on average 1.321172076989371) internal successors, (4599), 3501 states have internal predecessors, (4599), 400 states have call successors, (400), 266 states have call predecessors, (400), 374 states have return successors, (738), 490 states have call predecessors, (738), 396 states have call successors, (738) [2022-01-10 08:24:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4257 states to 4257 states and 5737 transitions. [2022-01-10 08:24:40,127 INFO L78 Accepts]: Start accepts. Automaton has 4257 states and 5737 transitions. Word has length 160 [2022-01-10 08:24:40,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:40,127 INFO L470 AbstractCegarLoop]: Abstraction has 4257 states and 5737 transitions. [2022-01-10 08:24:40,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 4257 states and 5737 transitions. [2022-01-10 08:24:40,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 08:24:40,136 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:40,136 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:40,146 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 08:24:40,344 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 08:24:40,344 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:40,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:40,344 INFO L85 PathProgramCache]: Analyzing trace with hash -61308065, now seen corresponding path program 1 times [2022-01-10 08:24:40,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:40,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [780514486] [2022-01-10 08:24:40,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:40,345 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:40,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:40,346 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 08:24:40,348 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 08:24:40,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:40,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:40,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:40,684 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-01-10 08:24:40,684 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:40,684 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:40,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [780514486] [2022-01-10 08:24:40,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [780514486] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:40,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:40,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:40,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992297920] [2022-01-10 08:24:40,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:40,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:40,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:40,685 INFO L87 Difference]: Start difference. First operand 4257 states and 5737 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 08:24:40,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:40,796 INFO L93 Difference]: Finished difference Result 11635 states and 15696 transitions. [2022-01-10 08:24:40,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:40,796 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 161 [2022-01-10 08:24:40,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:40,834 INFO L225 Difference]: With dead ends: 11635 [2022-01-10 08:24:40,835 INFO L226 Difference]: Without dead ends: 7946 [2022-01-10 08:24:40,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 08:24:40,846 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 72 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:40,847 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 1618 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7946 states. [2022-01-10 08:24:41,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7946 to 7942. [2022-01-10 08:24:41,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7942 states, 6461 states have (on average 1.2977867203219315) internal successors, (8385), 6496 states have internal predecessors, (8385), 754 states have call successors, (754), 509 states have call predecessors, (754), 725 states have return successors, (1432), 937 states have call predecessors, (1432), 750 states have call successors, (1432) [2022-01-10 08:24:41,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7942 states to 7942 states and 10571 transitions. [2022-01-10 08:24:41,099 INFO L78 Accepts]: Start accepts. Automaton has 7942 states and 10571 transitions. Word has length 161 [2022-01-10 08:24:41,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:41,100 INFO L470 AbstractCegarLoop]: Abstraction has 7942 states and 10571 transitions. [2022-01-10 08:24:41,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-01-10 08:24:41,100 INFO L276 IsEmpty]: Start isEmpty. Operand 7942 states and 10571 transitions. [2022-01-10 08:24:41,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 08:24:41,109 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:41,109 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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, 1, 1] [2022-01-10 08:24:41,118 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 08:24:41,316 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 08:24:41,316 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:41,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:41,316 INFO L85 PathProgramCache]: Analyzing trace with hash -834655123, now seen corresponding path program 1 times [2022-01-10 08:24:41,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:41,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282401146] [2022-01-10 08:24:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:41,317 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:41,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:41,318 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 08:24:41,320 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 08:24:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:41,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:41,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:41,604 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-01-10 08:24:41,604 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:41,604 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:41,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282401146] [2022-01-10 08:24:41,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282401146] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:41,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:41,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:41,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992565869] [2022-01-10 08:24:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:41,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:41,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:41,605 INFO L87 Difference]: Start difference. First operand 7942 states and 10571 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:41,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:41,784 INFO L93 Difference]: Finished difference Result 12764 states and 17238 transitions. [2022-01-10 08:24:41,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:41,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 162 [2022-01-10 08:24:41,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:41,787 INFO L225 Difference]: With dead ends: 12764 [2022-01-10 08:24:41,787 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 08:24:41,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 160 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 08:24:41,806 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 88 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1684 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:41,807 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1684 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:41,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 08:24:41,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 08:24:41,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.585561497326203) internal successors, (593), 376 states have internal predecessors, (593), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:24:41,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 649 transitions. [2022-01-10 08:24:41,816 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 649 transitions. Word has length 162 [2022-01-10 08:24:41,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:41,816 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 649 transitions. [2022-01-10 08:24:41,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-01-10 08:24:41,817 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 649 transitions. [2022-01-10 08:24:41,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:41,818 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:41,818 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:41,827 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 08:24:42,025 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 08:24:42,025 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,026 INFO L85 PathProgramCache]: Analyzing trace with hash -1535088010, now seen corresponding path program 1 times [2022-01-10 08:24:42,026 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1801952063] [2022-01-10 08:24:42,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,027 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,027 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,028 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 08:24:42,029 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 08:24:42,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:42,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:42,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:42,394 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 08:24:42,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:42,394 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:42,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1801952063] [2022-01-10 08:24:42,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1801952063] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:42,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:42,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:42,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343100627] [2022-01-10 08:24:42,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:42,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:42,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:42,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:42,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:42,396 INFO L87 Difference]: Start difference. First operand 410 states and 649 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:42,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:42,410 INFO L93 Difference]: Finished difference Result 808 states and 1279 transitions. [2022-01-10 08:24:42,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:42,410 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:42,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:42,412 INFO L225 Difference]: With dead ends: 808 [2022-01-10 08:24:42,412 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 08:24:42,413 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 08:24:42,413 INFO L933 BasicCegarLoop]: 647 mSDtfsCounter, 635 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 635 SdHoareTripleChecker+Valid, 648 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 08:24:42,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [635 Valid, 648 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:42,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 08:24:42,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 08:24:42,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5828877005347595) internal successors, (592), 376 states have internal predecessors, (592), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:24:42,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 648 transitions. [2022-01-10 08:24:42,421 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 648 transitions. Word has length 190 [2022-01-10 08:24:42,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:42,421 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 648 transitions. [2022-01-10 08:24:42,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:42,422 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 648 transitions. [2022-01-10 08:24:42,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:42,423 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:42,423 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:42,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:42,639 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 08:24:42,640 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:42,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:42,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1160730228, now seen corresponding path program 1 times [2022-01-10 08:24:42,641 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:42,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1943606385] [2022-01-10 08:24:42,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:42,641 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:42,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:42,642 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 08:24:42,644 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 08:24:42,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:42,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:24:42,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:24:42,987 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:42,987 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:42,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1943606385] [2022-01-10 08:24:42,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1943606385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:42,987 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:42,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:24:42,988 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090514168] [2022-01-10 08:24:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:42,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:24:42,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:42,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:24:42,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:24:42,989 INFO L87 Difference]: Start difference. First operand 410 states and 648 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:43,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:43,009 INFO L93 Difference]: Finished difference Result 800 states and 1262 transitions. [2022-01-10 08:24:43,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:24:43,010 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:43,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:43,011 INFO L225 Difference]: With dead ends: 800 [2022-01-10 08:24:43,011 INFO L226 Difference]: Without dead ends: 410 [2022-01-10 08:24:43,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 08:24:43,012 INFO L933 BasicCegarLoop]: 646 mSDtfsCounter, 626 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 626 SdHoareTripleChecker+Valid, 647 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 08:24:43,012 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [626 Valid, 647 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:24:43,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-10 08:24:43,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 410. [2022-01-10 08:24:43,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 374 states have (on average 1.5802139037433156) internal successors, (591), 376 states have internal predecessors, (591), 29 states have call successors, (29), 7 states have call predecessors, (29), 6 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-01-10 08:24:43,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 647 transitions. [2022-01-10 08:24:43,019 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 647 transitions. Word has length 190 [2022-01-10 08:24:43,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:43,019 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 647 transitions. [2022-01-10 08:24:43,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:43,020 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 647 transitions. [2022-01-10 08:24:43,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:43,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:43,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:43,041 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 08:24:43,231 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 08:24:43,232 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:43,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:43,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1070669938, now seen corresponding path program 1 times [2022-01-10 08:24:43,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:43,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [727300594] [2022-01-10 08:24:43,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:43,233 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:43,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:43,234 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 08:24:43,235 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 08:24:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:43,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 543 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:43,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:43,584 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 08:24:43,585 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:43,585 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:43,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [727300594] [2022-01-10 08:24:43,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [727300594] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:43,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:43,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:43,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455409984] [2022-01-10 08:24:43,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:43,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:43,586 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:43,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:43,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:43,586 INFO L87 Difference]: Start difference. First operand 410 states and 647 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:44,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:44,199 INFO L93 Difference]: Finished difference Result 1238 states and 1975 transitions. [2022-01-10 08:24:44,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:24:44,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:44,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:44,202 INFO L225 Difference]: With dead ends: 1238 [2022-01-10 08:24:44,202 INFO L226 Difference]: Without dead ends: 850 [2022-01-10 08:24:44,204 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:44,204 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 1246 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1995 SdHoareTripleChecker+Invalid, 606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:44,204 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1267 Valid, 1995 Invalid, 606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-10 08:24:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 850 states. [2022-01-10 08:24:44,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 850 to 817. [2022-01-10 08:24:44,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5930851063829787) internal successors, (1198), 755 states have internal predecessors, (1198), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:44,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1299 transitions. [2022-01-10 08:24:44,236 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1299 transitions. Word has length 190 [2022-01-10 08:24:44,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:44,236 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1299 transitions. [2022-01-10 08:24:44,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 08:24:44,236 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1299 transitions. [2022-01-10 08:24:44,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:44,237 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:44,237 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:44,248 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 08:24:44,446 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 08:24:44,446 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:44,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:44,447 INFO L85 PathProgramCache]: Analyzing trace with hash -776356498, now seen corresponding path program 1 times [2022-01-10 08:24:44,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:44,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1188804949] [2022-01-10 08:24:44,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:44,448 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:44,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:44,448 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 08:24:44,449 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 08:24:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:44,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 541 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:44,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:44,825 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 08:24:44,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:44,826 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:44,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1188804949] [2022-01-10 08:24:44,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1188804949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:44,826 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:44,826 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:44,826 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248574384] [2022-01-10 08:24:44,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:44,826 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:44,826 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:44,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:44,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:44,827 INFO L87 Difference]: Start difference. First operand 817 states and 1299 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:45,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:45,193 INFO L93 Difference]: Finished difference Result 1612 states and 2569 transitions. [2022-01-10 08:24:45,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:45,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:45,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:45,195 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:45,195 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:45,197 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:45,197 INFO L933 BasicCegarLoop]: 614 mSDtfsCounter, 880 mSDsluCounter, 709 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:45,197 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [901 Valid, 1323 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:45,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:45,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5837765957446808) internal successors, (1191), 755 states have internal predecessors, (1191), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:45,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1292 transitions. [2022-01-10 08:24:45,213 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1292 transitions. Word has length 190 [2022-01-10 08:24:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:45,213 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1292 transitions. [2022-01-10 08:24:45,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1292 transitions. [2022-01-10 08:24:45,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:45,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:45,214 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:45,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-01-10 08:24:45,423 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 08:24:45,423 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:45,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:45,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1242271986, now seen corresponding path program 1 times [2022-01-10 08:24:45,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:45,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [551371469] [2022-01-10 08:24:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:45,424 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:45,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:45,425 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 08:24:45,427 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 08:24:45,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:45,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 539 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:45,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:45,768 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 08:24:45,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:45,769 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:45,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [551371469] [2022-01-10 08:24:45,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [551371469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:45,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:45,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:45,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309837] [2022-01-10 08:24:45,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:45,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:45,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:45,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:45,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:45,770 INFO L87 Difference]: Start difference. First operand 817 states and 1292 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:46,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:46,102 INFO L93 Difference]: Finished difference Result 1612 states and 2555 transitions. [2022-01-10 08:24:46,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:46,102 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:46,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:46,105 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:46,105 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:46,106 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:46,107 INFO L933 BasicCegarLoop]: 611 mSDtfsCounter, 874 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:46,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [895 Valid, 1316 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:46,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:46,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:46,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.574468085106383) internal successors, (1184), 755 states have internal predecessors, (1184), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:46,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1285 transitions. [2022-01-10 08:24:46,123 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1285 transitions. Word has length 190 [2022-01-10 08:24:46,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:46,123 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1285 transitions. [2022-01-10 08:24:46,124 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:46,124 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1285 transitions. [2022-01-10 08:24:46,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:46,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:46,125 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:24:46,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-01-10 08:24:46,333 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 08:24:46,333 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:46,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1445936366, now seen corresponding path program 1 times [2022-01-10 08:24:46,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:46,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791985112] [2022-01-10 08:24:46,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:46,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:46,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:46,335 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 08:24:46,341 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 08:24:46,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:46,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 537 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:46,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:46,704 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 08:24:46,704 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:46,704 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:46,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791985112] [2022-01-10 08:24:46,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791985112] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:46,704 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:46,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:46,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670882255] [2022-01-10 08:24:46,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:46,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:46,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:46,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:46,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:46,705 INFO L87 Difference]: Start difference. First operand 817 states and 1285 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:47,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:47,029 INFO L93 Difference]: Finished difference Result 1612 states and 2541 transitions. [2022-01-10 08:24:47,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:47,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:47,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:47,044 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:47,044 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:47,046 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:47,046 INFO L933 BasicCegarLoop]: 608 mSDtfsCounter, 868 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 889 SdHoareTripleChecker+Valid, 1309 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:47,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [889 Valid, 1309 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:47,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:47,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:47,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.565159574468085) internal successors, (1177), 755 states have internal predecessors, (1177), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:47,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1278 transitions. [2022-01-10 08:24:47,063 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1278 transitions. Word has length 190 [2022-01-10 08:24:47,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:47,063 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1278 transitions. [2022-01-10 08:24:47,064 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:47,064 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1278 transitions. [2022-01-10 08:24:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:47,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:47,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:47,074 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 08:24:47,272 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 08:24:47,273 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:47,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:47,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1456987790, now seen corresponding path program 1 times [2022-01-10 08:24:47,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:47,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1529689220] [2022-01-10 08:24:47,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:47,274 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:47,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:47,275 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 08:24:47,276 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 08:24:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:47,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 535 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:47,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:47,629 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 08:24:47,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:47,629 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:47,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1529689220] [2022-01-10 08:24:47,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1529689220] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:47,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:47,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:47,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890330828] [2022-01-10 08:24:47,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:47,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:47,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:47,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:47,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:47,631 INFO L87 Difference]: Start difference. First operand 817 states and 1278 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:47,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:47,957 INFO L93 Difference]: Finished difference Result 1612 states and 2527 transitions. [2022-01-10 08:24:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:47,958 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:47,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:47,960 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:47,960 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:47,963 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:47,963 INFO L933 BasicCegarLoop]: 605 mSDtfsCounter, 862 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 883 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:47,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [883 Valid, 1302 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:47,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:47,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:47,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5558510638297873) internal successors, (1170), 755 states have internal predecessors, (1170), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:47,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1271 transitions. [2022-01-10 08:24:47,983 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1271 transitions. Word has length 190 [2022-01-10 08:24:47,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:47,983 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1271 transitions. [2022-01-10 08:24:47,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:47,984 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1271 transitions. [2022-01-10 08:24:47,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:47,985 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:47,985 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:47,997 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 08:24:48,195 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 08:24:48,195 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:48,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:48,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1358863470, now seen corresponding path program 1 times [2022-01-10 08:24:48,196 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:48,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [505430385] [2022-01-10 08:24:48,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:48,196 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:48,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:48,197 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 08:24:48,198 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 08:24:48,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:48,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 533 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:48,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:48,539 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 08:24:48,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:48,540 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:48,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [505430385] [2022-01-10 08:24:48,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [505430385] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:48,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:48,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:48,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741956197] [2022-01-10 08:24:48,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:48,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:48,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:48,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:48,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:48,542 INFO L87 Difference]: Start difference. First operand 817 states and 1271 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:48,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:48,857 INFO L93 Difference]: Finished difference Result 1612 states and 2513 transitions. [2022-01-10 08:24:48,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:48,858 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:48,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:48,860 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:48,860 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:48,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:48,862 INFO L933 BasicCegarLoop]: 602 mSDtfsCounter, 855 mSDsluCounter, 693 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 876 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:48,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [876 Valid, 1295 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:48,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:48,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:48,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5465425531914894) internal successors, (1163), 755 states have internal predecessors, (1163), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:48,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1264 transitions. [2022-01-10 08:24:48,880 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1264 transitions. Word has length 190 [2022-01-10 08:24:48,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:48,880 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1264 transitions. [2022-01-10 08:24:48,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:48,880 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1264 transitions. [2022-01-10 08:24:48,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:48,881 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:48,881 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:48,899 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 08:24:49,089 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 08:24:49,090 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:49,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:49,090 INFO L85 PathProgramCache]: Analyzing trace with hash 821012074, now seen corresponding path program 1 times [2022-01-10 08:24:49,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:49,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [583582528] [2022-01-10 08:24:49,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:49,091 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:49,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:49,092 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 08:24:49,092 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 08:24:49,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:49,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:49,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:49,444 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 08:24:49,444 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:49,445 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:49,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [583582528] [2022-01-10 08:24:49,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [583582528] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:49,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:49,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:49,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224778942] [2022-01-10 08:24:49,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:49,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:49,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:49,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:49,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:49,446 INFO L87 Difference]: Start difference. First operand 817 states and 1264 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:49,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:49,754 INFO L93 Difference]: Finished difference Result 1612 states and 2499 transitions. [2022-01-10 08:24:49,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:49,757 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:49,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:49,758 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:49,758 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:49,760 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:49,760 INFO L933 BasicCegarLoop]: 599 mSDtfsCounter, 849 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1288 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:49,760 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [870 Valid, 1288 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:49,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:49,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:49,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5372340425531914) internal successors, (1156), 755 states have internal predecessors, (1156), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:49,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1257 transitions. [2022-01-10 08:24:49,780 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1257 transitions. Word has length 190 [2022-01-10 08:24:49,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:49,781 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1257 transitions. [2022-01-10 08:24:49,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:49,781 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1257 transitions. [2022-01-10 08:24:49,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:49,782 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:49,782 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:49,792 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:49,990 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 08:24:49,990 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:49,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:49,991 INFO L85 PathProgramCache]: Analyzing trace with hash 1488393964, now seen corresponding path program 1 times [2022-01-10 08:24:49,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:49,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1602264730] [2022-01-10 08:24:49,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:49,991 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:49,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:49,992 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 08:24:49,993 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 08:24:50,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:50,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 530 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:50,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:50,339 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 08:24:50,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:50,340 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:50,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1602264730] [2022-01-10 08:24:50,340 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1602264730] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:50,340 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:50,340 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:50,340 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132124762] [2022-01-10 08:24:50,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:50,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:50,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:50,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:50,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:50,341 INFO L87 Difference]: Start difference. First operand 817 states and 1257 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:50,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:50,652 INFO L93 Difference]: Finished difference Result 1612 states and 2485 transitions. [2022-01-10 08:24:50,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:50,653 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:50,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:50,654 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:50,654 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:50,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:50,656 INFO L933 BasicCegarLoop]: 596 mSDtfsCounter, 843 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:50,656 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [864 Valid, 1281 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:50,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:50,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:50,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5279255319148937) internal successors, (1149), 755 states have internal predecessors, (1149), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:50,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1250 transitions. [2022-01-10 08:24:50,676 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1250 transitions. Word has length 190 [2022-01-10 08:24:50,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:50,677 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1250 transitions. [2022-01-10 08:24:50,677 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:50,677 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1250 transitions. [2022-01-10 08:24:50,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:50,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:50,678 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:50,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:50,885 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 08:24:50,886 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:50,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:50,886 INFO L85 PathProgramCache]: Analyzing trace with hash -2078642200, now seen corresponding path program 1 times [2022-01-10 08:24:50,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:50,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [871233406] [2022-01-10 08:24:50,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:50,887 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:50,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:50,888 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 08:24:50,888 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 08:24:51,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:51,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 528 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:51,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:51,230 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 08:24:51,230 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:51,230 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:51,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [871233406] [2022-01-10 08:24:51,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [871233406] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:51,231 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:51,231 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:51,231 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519941840] [2022-01-10 08:24:51,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:51,231 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:51,231 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:51,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:51,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:51,232 INFO L87 Difference]: Start difference. First operand 817 states and 1250 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:51,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:51,592 INFO L93 Difference]: Finished difference Result 1612 states and 2471 transitions. [2022-01-10 08:24:51,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:51,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:51,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:51,594 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:51,594 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:51,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:51,596 INFO L933 BasicCegarLoop]: 593 mSDtfsCounter, 837 mSDsluCounter, 681 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 858 SdHoareTripleChecker+Valid, 1274 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:51,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [858 Valid, 1274 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:51,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:51,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:51,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5186170212765957) internal successors, (1142), 755 states have internal predecessors, (1142), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:51,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1243 transitions. [2022-01-10 08:24:51,615 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1243 transitions. Word has length 190 [2022-01-10 08:24:51,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:51,616 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1243 transitions. [2022-01-10 08:24:51,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:51,616 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1243 transitions. [2022-01-10 08:24:51,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:51,616 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:51,617 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:51,626 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 08:24:51,824 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 08:24:51,825 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:51,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:51,825 INFO L85 PathProgramCache]: Analyzing trace with hash 715786092, now seen corresponding path program 1 times [2022-01-10 08:24:51,826 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:51,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [291168807] [2022-01-10 08:24:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:51,826 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:51,826 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:51,827 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 08:24:51,855 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 08:24:51,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:51,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:51,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:52,214 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 08:24:52,215 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:52,215 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:52,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [291168807] [2022-01-10 08:24:52,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [291168807] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:52,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:52,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:52,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036620189] [2022-01-10 08:24:52,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:52,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:52,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:52,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:52,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:52,216 INFO L87 Difference]: Start difference. First operand 817 states and 1243 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:52,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:52,539 INFO L93 Difference]: Finished difference Result 1612 states and 2457 transitions. [2022-01-10 08:24:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:52,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:52,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:52,547 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:52,547 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:52,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:52,549 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 831 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 1267 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:52,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [852 Valid, 1267 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:52,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:52,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:52,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.509308510638298) internal successors, (1135), 755 states have internal predecessors, (1135), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:52,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1236 transitions. [2022-01-10 08:24:52,578 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1236 transitions. Word has length 190 [2022-01-10 08:24:52,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:52,578 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1236 transitions. [2022-01-10 08:24:52,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:52,578 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1236 transitions. [2022-01-10 08:24:52,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:52,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:52,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:52,589 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 08:24:52,787 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 08:24:52,787 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:52,788 INFO L85 PathProgramCache]: Analyzing trace with hash 667381608, now seen corresponding path program 1 times [2022-01-10 08:24:52,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:52,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1663779881] [2022-01-10 08:24:52,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:52,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:52,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:52,789 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 08:24:52,789 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 08:24:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:52,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:52,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:53,120 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 08:24:53,121 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:53,121 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:53,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1663779881] [2022-01-10 08:24:53,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1663779881] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:53,121 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:53,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:53,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491385962] [2022-01-10 08:24:53,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:53,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:53,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:53,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:53,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:53,122 INFO L87 Difference]: Start difference. First operand 817 states and 1236 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:53,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:53,449 INFO L93 Difference]: Finished difference Result 1612 states and 2443 transitions. [2022-01-10 08:24:53,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:53,449 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:53,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:53,451 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:53,451 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:53,460 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:53,461 INFO L933 BasicCegarLoop]: 587 mSDtfsCounter, 825 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 1260 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:53,464 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [846 Valid, 1260 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:53,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:53,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:53,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.5) internal successors, (1128), 755 states have internal predecessors, (1128), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:53,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1229 transitions. [2022-01-10 08:24:53,486 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1229 transitions. Word has length 190 [2022-01-10 08:24:53,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:53,486 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1229 transitions. [2022-01-10 08:24:53,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:53,486 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1229 transitions. [2022-01-10 08:24:53,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:53,487 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:53,487 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:53,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (27)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:53,695 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 08:24:53,695 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:53,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:53,696 INFO L85 PathProgramCache]: Analyzing trace with hash -442558484, now seen corresponding path program 1 times [2022-01-10 08:24:53,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:53,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [901284320] [2022-01-10 08:24:53,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:53,696 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:53,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:53,698 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 08:24:53,698 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 08:24:53,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:53,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:53,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:54,053 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 08:24:54,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:54,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:54,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [901284320] [2022-01-10 08:24:54,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [901284320] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:54,053 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:54,053 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:54,053 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27275214] [2022-01-10 08:24:54,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:54,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:54,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:54,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:54,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:54,054 INFO L87 Difference]: Start difference. First operand 817 states and 1229 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:54,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:54,403 INFO L93 Difference]: Finished difference Result 1612 states and 2429 transitions. [2022-01-10 08:24:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:24:54,404 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:54,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:54,405 INFO L225 Difference]: With dead ends: 1612 [2022-01-10 08:24:54,405 INFO L226 Difference]: Without dead ends: 817 [2022-01-10 08:24:54,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:54,407 INFO L933 BasicCegarLoop]: 584 mSDtfsCounter, 819 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 330 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:54,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [840 Valid, 1253 Invalid, 330 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:24:54,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-01-10 08:24:54,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 817. [2022-01-10 08:24:54,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 817 states, 752 states have (on average 1.490691489361702) internal successors, (1121), 755 states have internal predecessors, (1121), 51 states have call successors, (51), 13 states have call predecessors, (51), 13 states have return successors, (50), 49 states have call predecessors, (50), 49 states have call successors, (50) [2022-01-10 08:24:54,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 817 states to 817 states and 1222 transitions. [2022-01-10 08:24:54,433 INFO L78 Accepts]: Start accepts. Automaton has 817 states and 1222 transitions. Word has length 190 [2022-01-10 08:24:54,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:54,433 INFO L470 AbstractCegarLoop]: Abstraction has 817 states and 1222 transitions. [2022-01-10 08:24:54,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:54,433 INFO L276 IsEmpty]: Start isEmpty. Operand 817 states and 1222 transitions. [2022-01-10 08:24:54,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:54,434 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:54,435 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:54,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (28)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:54,643 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 08:24:54,644 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:54,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:54,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1448194328, now seen corresponding path program 1 times [2022-01-10 08:24:54,645 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:54,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791501690] [2022-01-10 08:24:54,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:54,645 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:54,646 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:54,646 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 08:24:54,649 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 08:24:54,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:54,794 INFO L263 TraceCheckSpWp]: Trace formula consists of 520 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:54,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:54,998 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 08:24:54,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:54,998 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:54,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791501690] [2022-01-10 08:24:54,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791501690] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:54,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:54,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:54,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360005515] [2022-01-10 08:24:54,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:54,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:54,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:54,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:54,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:54,999 INFO L87 Difference]: Start difference. First operand 817 states and 1222 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:55,442 INFO L93 Difference]: Finished difference Result 1818 states and 2735 transitions. [2022-01-10 08:24:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:55,444 INFO L225 Difference]: With dead ends: 1818 [2022-01-10 08:24:55,444 INFO L226 Difference]: Without dead ends: 1023 [2022-01-10 08:24:55,445 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:55,445 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 948 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1245 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:55,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [969 Valid, 1245 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:24:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2022-01-10 08:24:55,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1023. [2022-01-10 08:24:55,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 952 states have (on average 1.4663865546218486) internal successors, (1396), 955 states have internal predecessors, (1396), 53 states have call successors, (53), 17 states have call predecessors, (53), 17 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-01-10 08:24:55,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1501 transitions. [2022-01-10 08:24:55,476 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1501 transitions. Word has length 190 [2022-01-10 08:24:55,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:55,476 INFO L470 AbstractCegarLoop]: Abstraction has 1023 states and 1501 transitions. [2022-01-10 08:24:55,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:55,476 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1501 transitions. [2022-01-10 08:24:55,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:55,477 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:55,477 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:55,495 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:55,685 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 08:24:55,685 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:55,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:55,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1797843740, now seen corresponding path program 1 times [2022-01-10 08:24:55,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:55,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474795273] [2022-01-10 08:24:55,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:55,686 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:55,687 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 08:24:55,699 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 08:24:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:55,823 INFO L263 TraceCheckSpWp]: Trace formula consists of 518 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:55,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:56,038 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 08:24:56,038 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:56,038 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:56,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474795273] [2022-01-10 08:24:56,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474795273] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:56,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:56,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:56,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66688597] [2022-01-10 08:24:56,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:56,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:56,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:56,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:56,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:56,039 INFO L87 Difference]: Start difference. First operand 1023 states and 1501 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:56,498 INFO L93 Difference]: Finished difference Result 2230 states and 3293 transitions. [2022-01-10 08:24:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:56,499 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:56,502 INFO L225 Difference]: With dead ends: 2230 [2022-01-10 08:24:56,502 INFO L226 Difference]: Without dead ends: 1229 [2022-01-10 08:24:56,504 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:56,508 INFO L933 BasicCegarLoop]: 579 mSDtfsCounter, 941 mSDsluCounter, 660 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 1239 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:56,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [962 Valid, 1239 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:24:56,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1229 states. [2022-01-10 08:24:56,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1229 to 1229. [2022-01-10 08:24:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1229 states, 1152 states have (on average 1.4470486111111112) internal successors, (1667), 1155 states have internal predecessors, (1667), 55 states have call successors, (55), 21 states have call predecessors, (55), 21 states have return successors, (54), 53 states have call predecessors, (54), 53 states have call successors, (54) [2022-01-10 08:24:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1229 states to 1229 states and 1776 transitions. [2022-01-10 08:24:56,558 INFO L78 Accepts]: Start accepts. Automaton has 1229 states and 1776 transitions. Word has length 190 [2022-01-10 08:24:56,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:56,558 INFO L470 AbstractCegarLoop]: Abstraction has 1229 states and 1776 transitions. [2022-01-10 08:24:56,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:56,558 INFO L276 IsEmpty]: Start isEmpty. Operand 1229 states and 1776 transitions. [2022-01-10 08:24:56,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:56,559 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:56,559 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:56,569 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:56,767 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 08:24:56,767 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 593486853, now seen corresponding path program 1 times [2022-01-10 08:24:56,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:56,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1652966955] [2022-01-10 08:24:56,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:56,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:56,769 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 08:24:56,770 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 08:24:56,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:56,897 INFO L263 TraceCheckSpWp]: Trace formula consists of 516 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:56,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:57,117 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 08:24:57,117 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:57,117 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:57,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1652966955] [2022-01-10 08:24:57,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1652966955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:57,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:57,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:57,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549636203] [2022-01-10 08:24:57,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:57,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:57,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:57,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:57,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:57,119 INFO L87 Difference]: Start difference. First operand 1229 states and 1776 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:57,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:57,621 INFO L93 Difference]: Finished difference Result 2642 states and 3843 transitions. [2022-01-10 08:24:57,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:57,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:57,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:57,625 INFO L225 Difference]: With dead ends: 2642 [2022-01-10 08:24:57,625 INFO L226 Difference]: Without dead ends: 1435 [2022-01-10 08:24:57,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:57,627 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 935 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 441 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 956 SdHoareTripleChecker+Valid, 1230 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 441 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:57,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [956 Valid, 1230 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 441 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:24:57,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1435 states. [2022-01-10 08:24:57,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1435 to 1435. [2022-01-10 08:24:57,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1435 states, 1352 states have (on average 1.430473372781065) internal successors, (1934), 1355 states have internal predecessors, (1934), 57 states have call successors, (57), 25 states have call predecessors, (57), 25 states have return successors, (56), 55 states have call predecessors, (56), 55 states have call successors, (56) [2022-01-10 08:24:57,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1435 states to 1435 states and 2047 transitions. [2022-01-10 08:24:57,679 INFO L78 Accepts]: Start accepts. Automaton has 1435 states and 2047 transitions. Word has length 190 [2022-01-10 08:24:57,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:57,679 INFO L470 AbstractCegarLoop]: Abstraction has 1435 states and 2047 transitions. [2022-01-10 08:24:57,679 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:57,679 INFO L276 IsEmpty]: Start isEmpty. Operand 1435 states and 2047 transitions. [2022-01-10 08:24:57,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:57,680 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:57,680 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:57,694 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:57,895 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 08:24:57,895 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:57,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:57,895 INFO L85 PathProgramCache]: Analyzing trace with hash -54920959, now seen corresponding path program 1 times [2022-01-10 08:24:57,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:57,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608402257] [2022-01-10 08:24:57,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:57,896 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:57,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:57,897 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 08:24:57,898 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 08:24:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:58,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 514 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:58,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:58,266 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 08:24:58,266 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:58,267 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:58,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608402257] [2022-01-10 08:24:58,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608402257] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:58,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:58,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:58,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963812366] [2022-01-10 08:24:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:58,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:58,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:58,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:58,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:58,269 INFO L87 Difference]: Start difference. First operand 1435 states and 2047 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:58,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:24:58,855 INFO L93 Difference]: Finished difference Result 3054 states and 4385 transitions. [2022-01-10 08:24:58,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:24:58,856 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:24:58,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:24:58,859 INFO L225 Difference]: With dead ends: 3054 [2022-01-10 08:24:58,859 INFO L226 Difference]: Without dead ends: 1641 [2022-01-10 08:24:58,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:24:58,861 INFO L933 BasicCegarLoop]: 571 mSDtfsCounter, 928 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 949 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:24:58,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [949 Valid, 1223 Invalid, 481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 440 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:24:58,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1641 states. [2022-01-10 08:24:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1641 to 1641. [2022-01-10 08:24:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1641 states, 1552 states have (on average 1.4155927835051547) internal successors, (2197), 1555 states have internal predecessors, (2197), 59 states have call successors, (59), 29 states have call predecessors, (59), 29 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-01-10 08:24:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1641 states to 1641 states and 2314 transitions. [2022-01-10 08:24:58,923 INFO L78 Accepts]: Start accepts. Automaton has 1641 states and 2314 transitions. Word has length 190 [2022-01-10 08:24:58,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:24:58,923 INFO L470 AbstractCegarLoop]: Abstraction has 1641 states and 2314 transitions. [2022-01-10 08:24:58,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:24:58,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1641 states and 2314 transitions. [2022-01-10 08:24:58,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:24:58,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:24:58,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:24:58,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (32)] Forceful destruction successful, exit code 0 [2022-01-10 08:24:59,133 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 08:24:59,133 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:24:59,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:24:59,133 INFO L85 PathProgramCache]: Analyzing trace with hash -787363932, now seen corresponding path program 1 times [2022-01-10 08:24:59,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:24:59,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902086412] [2022-01-10 08:24:59,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:24:59,134 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:24:59,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:24:59,135 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 08:24:59,136 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 08:24:59,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:24:59,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 511 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:24:59,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:24:59,452 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 08:24:59,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:24:59,453 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:24:59,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902086412] [2022-01-10 08:24:59,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902086412] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:24:59,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:24:59,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:24:59,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706605848] [2022-01-10 08:24:59,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:24:59,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:24:59,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:24:59,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:24:59,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:24:59,454 INFO L87 Difference]: Start difference. First operand 1641 states and 2314 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:00,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:00,000 INFO L93 Difference]: Finished difference Result 3466 states and 4919 transitions. [2022-01-10 08:25:00,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:00,001 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:00,005 INFO L225 Difference]: With dead ends: 3466 [2022-01-10 08:25:00,005 INFO L226 Difference]: Without dead ends: 1847 [2022-01-10 08:25:00,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:00,007 INFO L933 BasicCegarLoop]: 568 mSDtfsCounter, 921 mSDsluCounter, 648 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1216 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:00,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [942 Valid, 1216 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2022-01-10 08:25:00,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1847. [2022-01-10 08:25:00,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1847 states, 1752 states have (on average 1.4018264840182648) internal successors, (2456), 1755 states have internal predecessors, (2456), 61 states have call successors, (61), 33 states have call predecessors, (61), 33 states have return successors, (60), 59 states have call predecessors, (60), 59 states have call successors, (60) [2022-01-10 08:25:00,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1847 states to 1847 states and 2577 transitions. [2022-01-10 08:25:00,087 INFO L78 Accepts]: Start accepts. Automaton has 1847 states and 2577 transitions. Word has length 190 [2022-01-10 08:25:00,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:00,087 INFO L470 AbstractCegarLoop]: Abstraction has 1847 states and 2577 transitions. [2022-01-10 08:25:00,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1847 states and 2577 transitions. [2022-01-10 08:25:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:00,088 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:00,088 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:00,099 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 08:25:00,297 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 08:25:00,297 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:00,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:00,297 INFO L85 PathProgramCache]: Analyzing trace with hash -867442177, now seen corresponding path program 1 times [2022-01-10 08:25:00,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:00,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [75646958] [2022-01-10 08:25:00,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:00,298 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:00,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:00,299 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 08:25:00,301 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 08:25:00,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:00,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 508 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:00,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:00,655 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:00,655 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:00,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [75646958] [2022-01-10 08:25:00,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [75646958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:00,656 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:00,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:00,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892072035] [2022-01-10 08:25:00,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:00,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:00,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:00,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:00,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:00,657 INFO L87 Difference]: Start difference. First operand 1847 states and 2577 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:01,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:01,192 INFO L93 Difference]: Finished difference Result 3878 states and 5445 transitions. [2022-01-10 08:25:01,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:01,193 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:01,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:01,196 INFO L225 Difference]: With dead ends: 3878 [2022-01-10 08:25:01,196 INFO L226 Difference]: Without dead ends: 2053 [2022-01-10 08:25:01,198 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:01,199 INFO L933 BasicCegarLoop]: 565 mSDtfsCounter, 914 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 438 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 1209 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:01,199 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [935 Valid, 1209 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 438 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:01,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2053 states. [2022-01-10 08:25:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2053 to 2053. [2022-01-10 08:25:01,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2053 states, 1952 states have (on average 1.3888319672131149) internal successors, (2711), 1955 states have internal predecessors, (2711), 63 states have call successors, (63), 37 states have call predecessors, (63), 37 states have return successors, (62), 61 states have call predecessors, (62), 61 states have call successors, (62) [2022-01-10 08:25:01,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2053 states to 2053 states and 2836 transitions. [2022-01-10 08:25:01,283 INFO L78 Accepts]: Start accepts. Automaton has 2053 states and 2836 transitions. Word has length 190 [2022-01-10 08:25:01,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:01,283 INFO L470 AbstractCegarLoop]: Abstraction has 2053 states and 2836 transitions. [2022-01-10 08:25:01,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:01,284 INFO L276 IsEmpty]: Start isEmpty. Operand 2053 states and 2836 transitions. [2022-01-10 08:25:01,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:01,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:01,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:01,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:01,495 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 08:25:01,496 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:01,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:01,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1845080445, now seen corresponding path program 1 times [2022-01-10 08:25:01,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:01,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773952157] [2022-01-10 08:25:01,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:01,497 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:01,497 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:01,498 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 08:25:01,499 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 08:25:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:01,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:01,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:01,821 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 08:25:01,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:01,821 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:01,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773952157] [2022-01-10 08:25:01,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773952157] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:01,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:01,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:01,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861498100] [2022-01-10 08:25:01,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:01,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:01,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:01,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:01,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:01,822 INFO L87 Difference]: Start difference. First operand 2053 states and 2836 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:02,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:02,451 INFO L93 Difference]: Finished difference Result 4290 states and 5963 transitions. [2022-01-10 08:25:02,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:02,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:02,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:02,469 INFO L225 Difference]: With dead ends: 4290 [2022-01-10 08:25:02,469 INFO L226 Difference]: Without dead ends: 2259 [2022-01-10 08:25:02,471 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:02,472 INFO L933 BasicCegarLoop]: 562 mSDtfsCounter, 907 mSDsluCounter, 640 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 1202 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:02,472 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 1202 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2259 states. [2022-01-10 08:25:02,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2259 to 2259. [2022-01-10 08:25:02,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2259 states, 2152 states have (on average 1.3763940520446096) internal successors, (2962), 2155 states have internal predecessors, (2962), 65 states have call successors, (65), 41 states have call predecessors, (65), 41 states have return successors, (64), 63 states have call predecessors, (64), 63 states have call successors, (64) [2022-01-10 08:25:02,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2259 states to 2259 states and 3091 transitions. [2022-01-10 08:25:02,566 INFO L78 Accepts]: Start accepts. Automaton has 2259 states and 3091 transitions. Word has length 190 [2022-01-10 08:25:02,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:02,566 INFO L470 AbstractCegarLoop]: Abstraction has 2259 states and 3091 transitions. [2022-01-10 08:25:02,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:02,566 INFO L276 IsEmpty]: Start isEmpty. Operand 2259 states and 3091 transitions. [2022-01-10 08:25:02,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:02,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:02,567 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:02,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:02,775 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 08:25:02,776 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1251963298, now seen corresponding path program 1 times [2022-01-10 08:25:02,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:02,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2018832748] [2022-01-10 08:25:02,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:02,776 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:02,777 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:02,778 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 08:25:02,780 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 08:25:02,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:02,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 503 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:02,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:03,158 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 08:25:03,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:03,158 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:03,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2018832748] [2022-01-10 08:25:03,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2018832748] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:03,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431571927] [2022-01-10 08:25:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:03,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:03,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:03,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:03,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:03,160 INFO L87 Difference]: Start difference. First operand 2259 states and 3091 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:03,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:03,675 INFO L93 Difference]: Finished difference Result 4702 states and 6473 transitions. [2022-01-10 08:25:03,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:03,676 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:03,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:03,680 INFO L225 Difference]: With dead ends: 4702 [2022-01-10 08:25:03,680 INFO L226 Difference]: Without dead ends: 2465 [2022-01-10 08:25:03,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:03,683 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 899 mSDsluCounter, 636 mSDsCounter, 0 mSdLazyCounter, 436 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 920 SdHoareTripleChecker+Valid, 1195 SdHoareTripleChecker+Invalid, 477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:03,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [920 Valid, 1195 Invalid, 477 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 436 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:03,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2465 states. [2022-01-10 08:25:03,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2465 to 2465. [2022-01-10 08:25:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2465 states, 2352 states have (on average 1.3643707482993197) internal successors, (3209), 2355 states have internal predecessors, (3209), 67 states have call successors, (67), 45 states have call predecessors, (67), 45 states have return successors, (66), 65 states have call predecessors, (66), 65 states have call successors, (66) [2022-01-10 08:25:03,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2465 states to 2465 states and 3342 transitions. [2022-01-10 08:25:03,792 INFO L78 Accepts]: Start accepts. Automaton has 2465 states and 3342 transitions. Word has length 190 [2022-01-10 08:25:03,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:03,792 INFO L470 AbstractCegarLoop]: Abstraction has 2465 states and 3342 transitions. [2022-01-10 08:25:03,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:03,792 INFO L276 IsEmpty]: Start isEmpty. Operand 2465 states and 3342 transitions. [2022-01-10 08:25:03,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:03,793 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:03,793 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:03,801 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 08:25:03,993 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 08:25:03,994 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:03,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:03,994 INFO L85 PathProgramCache]: Analyzing trace with hash 70284217, now seen corresponding path program 1 times [2022-01-10 08:25:03,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:03,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [270415529] [2022-01-10 08:25:03,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:03,994 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:03,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:03,995 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 08:25:03,996 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 08:25:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:04,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:04,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:04,365 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 08:25:04,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:04,366 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:04,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [270415529] [2022-01-10 08:25:04,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [270415529] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:04,366 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:04,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:04,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382499152] [2022-01-10 08:25:04,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:04,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:04,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:04,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:04,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:04,367 INFO L87 Difference]: Start difference. First operand 2465 states and 3342 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:04,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:04,900 INFO L93 Difference]: Finished difference Result 5114 states and 6975 transitions. [2022-01-10 08:25:04,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:04,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:04,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:04,910 INFO L225 Difference]: With dead ends: 5114 [2022-01-10 08:25:04,910 INFO L226 Difference]: Without dead ends: 2671 [2022-01-10 08:25:04,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:04,914 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 892 mSDsluCounter, 632 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1188 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:04,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [913 Valid, 1188 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:04,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2671 states. [2022-01-10 08:25:05,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2671 to 2671. [2022-01-10 08:25:05,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2671 states, 2552 states have (on average 1.3526645768025078) internal successors, (3452), 2555 states have internal predecessors, (3452), 69 states have call successors, (69), 49 states have call predecessors, (69), 49 states have return successors, (68), 67 states have call predecessors, (68), 67 states have call successors, (68) [2022-01-10 08:25:05,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2671 states to 2671 states and 3589 transitions. [2022-01-10 08:25:05,065 INFO L78 Accepts]: Start accepts. Automaton has 2671 states and 3589 transitions. Word has length 190 [2022-01-10 08:25:05,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:05,065 INFO L470 AbstractCegarLoop]: Abstraction has 2671 states and 3589 transitions. [2022-01-10 08:25:05,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:05,065 INFO L276 IsEmpty]: Start isEmpty. Operand 2671 states and 3589 transitions. [2022-01-10 08:25:05,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:05,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:05,068 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:05,076 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 08:25:05,268 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 08:25:05,268 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:05,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:05,269 INFO L85 PathProgramCache]: Analyzing trace with hash 496838715, now seen corresponding path program 1 times [2022-01-10 08:25:05,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:05,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1481113608] [2022-01-10 08:25:05,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:05,269 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:05,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:05,271 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 08:25:05,273 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 08:25:05,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:05,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 499 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:05,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:05,649 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 08:25:05,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:05,650 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:05,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1481113608] [2022-01-10 08:25:05,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1481113608] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:05,652 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:05,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:05,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350336741] [2022-01-10 08:25:05,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:05,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:05,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:05,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:05,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:05,658 INFO L87 Difference]: Start difference. First operand 2671 states and 3589 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:06,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:06,216 INFO L93 Difference]: Finished difference Result 5526 states and 7469 transitions. [2022-01-10 08:25:06,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:06,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:06,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:06,221 INFO L225 Difference]: With dead ends: 5526 [2022-01-10 08:25:06,221 INFO L226 Difference]: Without dead ends: 2877 [2022-01-10 08:25:06,224 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:06,224 INFO L933 BasicCegarLoop]: 553 mSDtfsCounter, 885 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 906 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:06,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [906 Valid, 1181 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2022-01-10 08:25:06,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2877. [2022-01-10 08:25:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2877 states, 2752 states have (on average 1.3412063953488371) internal successors, (3691), 2755 states have internal predecessors, (3691), 71 states have call successors, (71), 53 states have call predecessors, (71), 53 states have return successors, (70), 69 states have call predecessors, (70), 69 states have call successors, (70) [2022-01-10 08:25:06,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2877 states to 2877 states and 3832 transitions. [2022-01-10 08:25:06,361 INFO L78 Accepts]: Start accepts. Automaton has 2877 states and 3832 transitions. Word has length 190 [2022-01-10 08:25:06,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:06,361 INFO L470 AbstractCegarLoop]: Abstraction has 2877 states and 3832 transitions. [2022-01-10 08:25:06,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2877 states and 3832 transitions. [2022-01-10 08:25:06,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:06,362 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:06,362 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:06,370 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Ended with exit code 0 [2022-01-10 08:25:06,564 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 08:25:06,564 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:06,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:06,565 INFO L85 PathProgramCache]: Analyzing trace with hash 1489515286, now seen corresponding path program 1 times [2022-01-10 08:25:06,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:06,565 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089320636] [2022-01-10 08:25:06,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:06,565 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:06,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:06,568 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 08:25:06,568 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 08:25:06,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:06,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 496 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:06,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:06,918 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 08:25:06,918 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:06,918 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:06,918 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089320636] [2022-01-10 08:25:06,918 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089320636] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:06,918 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:06,918 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:06,918 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731707309] [2022-01-10 08:25:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:06,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:06,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:06,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:06,919 INFO L87 Difference]: Start difference. First operand 2877 states and 3832 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:07,512 INFO L93 Difference]: Finished difference Result 5938 states and 7955 transitions. [2022-01-10 08:25:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:07,513 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:07,517 INFO L225 Difference]: With dead ends: 5938 [2022-01-10 08:25:07,517 INFO L226 Difference]: Without dead ends: 3083 [2022-01-10 08:25:07,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:07,521 INFO L933 BasicCegarLoop]: 550 mSDtfsCounter, 878 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:07,522 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [899 Valid, 1174 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:07,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3083 states. [2022-01-10 08:25:07,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3083 to 3083. [2022-01-10 08:25:07,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3083 states, 2952 states have (on average 1.3299457994579946) internal successors, (3926), 2955 states have internal predecessors, (3926), 73 states have call successors, (73), 57 states have call predecessors, (73), 57 states have return successors, (72), 71 states have call predecessors, (72), 71 states have call successors, (72) [2022-01-10 08:25:07,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3083 states to 3083 states and 4071 transitions. [2022-01-10 08:25:07,715 INFO L78 Accepts]: Start accepts. Automaton has 3083 states and 4071 transitions. Word has length 190 [2022-01-10 08:25:07,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:07,716 INFO L470 AbstractCegarLoop]: Abstraction has 3083 states and 4071 transitions. [2022-01-10 08:25:07,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:07,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3083 states and 4071 transitions. [2022-01-10 08:25:07,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:07,716 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:07,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:07,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:07,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:07,925 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:07,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:07,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1365909433, now seen corresponding path program 1 times [2022-01-10 08:25:07,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:07,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1415238345] [2022-01-10 08:25:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:07,926 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:07,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:07,927 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:07,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-01-10 08:25:08,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:08,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:08,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:08,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:08,287 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:08,287 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:08,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1415238345] [2022-01-10 08:25:08,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1415238345] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:08,287 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:08,287 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:08,287 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780705802] [2022-01-10 08:25:08,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:08,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:08,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:08,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:08,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:08,288 INFO L87 Difference]: Start difference. First operand 3083 states and 4071 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:08,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:08,854 INFO L93 Difference]: Finished difference Result 6350 states and 8433 transitions. [2022-01-10 08:25:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:08,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:08,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:08,861 INFO L225 Difference]: With dead ends: 6350 [2022-01-10 08:25:08,861 INFO L226 Difference]: Without dead ends: 3289 [2022-01-10 08:25:08,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:08,865 INFO L933 BasicCegarLoop]: 547 mSDtfsCounter, 871 mSDsluCounter, 620 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:08,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [892 Valid, 1167 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:08,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3289 states. [2022-01-10 08:25:09,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3289 to 3289. [2022-01-10 08:25:09,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3289 states, 3152 states have (on average 1.3188451776649746) internal successors, (4157), 3155 states have internal predecessors, (4157), 75 states have call successors, (75), 61 states have call predecessors, (75), 61 states have return successors, (74), 73 states have call predecessors, (74), 73 states have call successors, (74) [2022-01-10 08:25:09,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3289 states to 3289 states and 4306 transitions. [2022-01-10 08:25:09,055 INFO L78 Accepts]: Start accepts. Automaton has 3289 states and 4306 transitions. Word has length 190 [2022-01-10 08:25:09,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:09,056 INFO L470 AbstractCegarLoop]: Abstraction has 3289 states and 4306 transitions. [2022-01-10 08:25:09,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand 3289 states and 4306 transitions. [2022-01-10 08:25:09,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:09,056 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:09,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:09,065 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:09,265 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,265 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:09,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:09,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1995374517, now seen corresponding path program 1 times [2022-01-10 08:25:09,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:09,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190493266] [2022-01-10 08:25:09,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:09,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:09,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:09,267 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:09,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Waiting until timeout for monitored process [2022-01-10 08:25:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:09,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:09,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:09,610 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 08:25:09,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:09,611 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:09,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190493266] [2022-01-10 08:25:09,611 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190493266] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:09,611 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:09,611 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:09,611 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996160131] [2022-01-10 08:25:09,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:09,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:09,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:09,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:09,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:09,613 INFO L87 Difference]: Start difference. First operand 3289 states and 4306 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:10,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:10,216 INFO L93 Difference]: Finished difference Result 6762 states and 8903 transitions. [2022-01-10 08:25:10,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:10,216 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:10,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:10,222 INFO L225 Difference]: With dead ends: 6762 [2022-01-10 08:25:10,222 INFO L226 Difference]: Without dead ends: 3495 [2022-01-10 08:25:10,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:10,226 INFO L933 BasicCegarLoop]: 544 mSDtfsCounter, 864 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1160 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:10,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1160 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 431 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:10,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3495 states. [2022-01-10 08:25:10,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3495 to 3495. [2022-01-10 08:25:10,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3495 states, 3352 states have (on average 1.307875894988067) internal successors, (4384), 3355 states have internal predecessors, (4384), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:10,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3495 states to 3495 states and 4537 transitions. [2022-01-10 08:25:10,436 INFO L78 Accepts]: Start accepts. Automaton has 3495 states and 4537 transitions. Word has length 190 [2022-01-10 08:25:10,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:10,436 INFO L470 AbstractCegarLoop]: Abstraction has 3495 states and 4537 transitions. [2022-01-10 08:25:10,437 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 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 08:25:10,437 INFO L276 IsEmpty]: Start isEmpty. Operand 3495 states and 4537 transitions. [2022-01-10 08:25:10,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:10,437 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:10,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:10,446 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (41)] Ended with exit code 0 [2022-01-10 08:25:10,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:10,638 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:10,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:10,638 INFO L85 PathProgramCache]: Analyzing trace with hash 637957080, now seen corresponding path program 1 times [2022-01-10 08:25:10,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:10,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [837500738] [2022-01-10 08:25:10,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:10,639 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:10,639 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:10,640 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:10,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-01-10 08:25:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:10,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 488 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:10,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:10,951 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 08:25:10,951 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:10,951 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:10,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [837500738] [2022-01-10 08:25:10,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [837500738] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:10,951 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:10,951 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:10,951 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308959145] [2022-01-10 08:25:10,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:10,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:10,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:10,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:10,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:10,952 INFO L87 Difference]: Start difference. First operand 3495 states and 4537 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:11,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:11,182 INFO L93 Difference]: Finished difference Result 7345 states and 9584 transitions. [2022-01-10 08:25:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:11,182 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:11,189 INFO L225 Difference]: With dead ends: 7345 [2022-01-10 08:25:11,189 INFO L226 Difference]: Without dead ends: 3873 [2022-01-10 08:25:11,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:11,195 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 518 mSDsluCounter, 1915 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 2487 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:11,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [518 Valid, 2487 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:11,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3873 states. [2022-01-10 08:25:11,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3873 to 3501. [2022-01-10 08:25:11,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3501 states, 3358 states have (on average 1.2995830851697439) internal successors, (4364), 3361 states have internal predecessors, (4364), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:11,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3501 states to 3501 states and 4517 transitions. [2022-01-10 08:25:11,466 INFO L78 Accepts]: Start accepts. Automaton has 3501 states and 4517 transitions. Word has length 190 [2022-01-10 08:25:11,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:11,466 INFO L470 AbstractCegarLoop]: Abstraction has 3501 states and 4517 transitions. [2022-01-10 08:25:11,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:11,466 INFO L276 IsEmpty]: Start isEmpty. Operand 3501 states and 4517 transitions. [2022-01-10 08:25:11,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:11,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:11,467 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:11,475 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (42)] Ended with exit code 0 [2022-01-10 08:25:11,667 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,668 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1313117206, now seen corresponding path program 1 times [2022-01-10 08:25:11,668 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:11,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [484520792] [2022-01-10 08:25:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:11,669 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:11,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:11,669 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:11,670 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Waiting until timeout for monitored process [2022-01-10 08:25:11,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:11,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 487 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:11,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:11,981 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 08:25:11,981 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:11,982 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:11,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [484520792] [2022-01-10 08:25:11,982 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [484520792] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:11,982 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:11,982 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:11,982 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34704506] [2022-01-10 08:25:11,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:11,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:11,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:11,983 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:11,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:11,983 INFO L87 Difference]: Start difference. First operand 3501 states and 4517 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:12,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:12,249 INFO L93 Difference]: Finished difference Result 7329 states and 9508 transitions. [2022-01-10 08:25:12,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:12,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:12,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:12,256 INFO L225 Difference]: With dead ends: 7329 [2022-01-10 08:25:12,256 INFO L226 Difference]: Without dead ends: 3851 [2022-01-10 08:25:12,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:12,261 INFO L933 BasicCegarLoop]: 574 mSDtfsCounter, 479 mSDsluCounter, 1906 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 479 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:12,261 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [479 Valid, 2480 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:12,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3851 states. [2022-01-10 08:25:12,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3851 to 3507. [2022-01-10 08:25:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3507 states, 3364 states have (on average 1.291319857312723) internal successors, (4344), 3367 states have internal predecessors, (4344), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:12,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3507 states to 3507 states and 4497 transitions. [2022-01-10 08:25:12,468 INFO L78 Accepts]: Start accepts. Automaton has 3507 states and 4497 transitions. Word has length 190 [2022-01-10 08:25:12,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:12,468 INFO L470 AbstractCegarLoop]: Abstraction has 3507 states and 4497 transitions. [2022-01-10 08:25:12,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:12,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3507 states and 4497 transitions. [2022-01-10 08:25:12,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:12,469 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:12,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:12,477 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (43)] Ended with exit code 0 [2022-01-10 08:25:12,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:12,670 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:12,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:12,670 INFO L85 PathProgramCache]: Analyzing trace with hash -2034812204, now seen corresponding path program 1 times [2022-01-10 08:25:12,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:12,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2060687578] [2022-01-10 08:25:12,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:12,671 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:12,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:12,671 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:12,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-01-10 08:25:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:12,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:12,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:13,008 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 08:25:13,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:13,008 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:13,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2060687578] [2022-01-10 08:25:13,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2060687578] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:13,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:13,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:13,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026427063] [2022-01-10 08:25:13,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:13,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:13,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:13,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:13,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:13,009 INFO L87 Difference]: Start difference. First operand 3507 states and 4497 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:13,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:13,272 INFO L93 Difference]: Finished difference Result 7313 states and 9432 transitions. [2022-01-10 08:25:13,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:13,275 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:13,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:13,282 INFO L225 Difference]: With dead ends: 7313 [2022-01-10 08:25:13,283 INFO L226 Difference]: Without dead ends: 3829 [2022-01-10 08:25:13,288 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:13,288 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 440 mSDsluCounter, 1885 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 440 SdHoareTripleChecker+Valid, 2457 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:13,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [440 Valid, 2457 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:13,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2022-01-10 08:25:13,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3513. [2022-01-10 08:25:13,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3370 states have (on average 1.2830860534124628) internal successors, (4324), 3373 states have internal predecessors, (4324), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:13,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4477 transitions. [2022-01-10 08:25:13,538 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4477 transitions. Word has length 190 [2022-01-10 08:25:13,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:13,538 INFO L470 AbstractCegarLoop]: Abstraction has 3513 states and 4477 transitions. [2022-01-10 08:25:13,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:13,538 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4477 transitions. [2022-01-10 08:25:13,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:13,539 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:13,539 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:13,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-01-10 08:25:13,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:13,743 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:13,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:13,743 INFO L85 PathProgramCache]: Analyzing trace with hash 417679378, now seen corresponding path program 1 times [2022-01-10 08:25:13,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:13,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [237682394] [2022-01-10 08:25:13,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:13,744 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:13,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:13,745 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:13,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Waiting until timeout for monitored process [2022-01-10 08:25:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:13,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:13,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:14,063 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 08:25:14,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:14,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:14,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [237682394] [2022-01-10 08:25:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [237682394] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:14,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:14,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:14,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907641646] [2022-01-10 08:25:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:14,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:14,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:14,064 INFO L87 Difference]: Start difference. First operand 3513 states and 4477 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:14,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:14,359 INFO L93 Difference]: Finished difference Result 7297 states and 9356 transitions. [2022-01-10 08:25:14,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:14,359 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:14,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:14,365 INFO L225 Difference]: With dead ends: 7297 [2022-01-10 08:25:14,366 INFO L226 Difference]: Without dead ends: 3807 [2022-01-10 08:25:14,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:14,369 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 401 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 2442 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:14,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 2442 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:14,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3807 states. [2022-01-10 08:25:14,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3807 to 3519. [2022-01-10 08:25:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3519 states, 3376 states have (on average 1.2748815165876777) internal successors, (4304), 3379 states have internal predecessors, (4304), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:14,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3519 states to 3519 states and 4457 transitions. [2022-01-10 08:25:14,606 INFO L78 Accepts]: Start accepts. Automaton has 3519 states and 4457 transitions. Word has length 190 [2022-01-10 08:25:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:14,606 INFO L470 AbstractCegarLoop]: Abstraction has 3519 states and 4457 transitions. [2022-01-10 08:25:14,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 3519 states and 4457 transitions. [2022-01-10 08:25:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:14,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:14,607 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:14,616 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (45)] Ended with exit code 0 [2022-01-10 08:25:14,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:14,808 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:14,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:14,808 INFO L85 PathProgramCache]: Analyzing trace with hash 889035728, now seen corresponding path program 1 times [2022-01-10 08:25:14,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:14,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [32827362] [2022-01-10 08:25:14,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:14,809 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:14,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:14,809 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:14,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-01-10 08:25:14,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:14,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 484 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:14,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:15,124 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 08:25:15,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:15,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:15,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [32827362] [2022-01-10 08:25:15,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [32827362] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:15,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:15,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:15,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161170522] [2022-01-10 08:25:15,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:15,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:15,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:15,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:15,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:15,125 INFO L87 Difference]: Start difference. First operand 3519 states and 4457 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:15,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:15,486 INFO L93 Difference]: Finished difference Result 7281 states and 9280 transitions. [2022-01-10 08:25:15,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:15,486 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:15,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:15,493 INFO L225 Difference]: With dead ends: 7281 [2022-01-10 08:25:15,493 INFO L226 Difference]: Without dead ends: 3785 [2022-01-10 08:25:15,498 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:15,498 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 362 mSDsluCounter, 1855 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 2427 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:15,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 2427 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:15,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3785 states. [2022-01-10 08:25:15,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3785 to 3525. [2022-01-10 08:25:15,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3525 states, 3382 states have (on average 1.2667060910703725) internal successors, (4284), 3385 states have internal predecessors, (4284), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:15,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3525 states to 3525 states and 4437 transitions. [2022-01-10 08:25:15,773 INFO L78 Accepts]: Start accepts. Automaton has 3525 states and 4437 transitions. Word has length 190 [2022-01-10 08:25:15,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:15,774 INFO L470 AbstractCegarLoop]: Abstraction has 3525 states and 4437 transitions. [2022-01-10 08:25:15,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:15,774 INFO L276 IsEmpty]: Start isEmpty. Operand 3525 states and 4437 transitions. [2022-01-10 08:25:15,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:15,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:15,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:15,783 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (46)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:15,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:15,975 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:15,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:15,975 INFO L85 PathProgramCache]: Analyzing trace with hash 265754126, now seen corresponding path program 1 times [2022-01-10 08:25:15,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:15,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [399546765] [2022-01-10 08:25:15,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:15,976 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:15,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:15,977 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:15,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Waiting until timeout for monitored process [2022-01-10 08:25:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:16,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 483 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:16,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:16,291 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 08:25:16,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:16,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:16,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [399546765] [2022-01-10 08:25:16,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [399546765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:16,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:16,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:16,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120186357] [2022-01-10 08:25:16,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:16,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:16,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:16,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:16,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:16,292 INFO L87 Difference]: Start difference. First operand 3525 states and 4437 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:16,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:16,578 INFO L93 Difference]: Finished difference Result 7237 states and 9168 transitions. [2022-01-10 08:25:16,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:16,579 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:16,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:16,586 INFO L225 Difference]: With dead ends: 7237 [2022-01-10 08:25:16,586 INFO L226 Difference]: Without dead ends: 3735 [2022-01-10 08:25:16,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:16,591 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 284 mSDsluCounter, 1825 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 2397 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:16,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [284 Valid, 2397 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:16,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2022-01-10 08:25:16,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3531. [2022-01-10 08:25:16,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3531 states, 3388 states have (on average 1.2585596221959858) internal successors, (4264), 3391 states have internal predecessors, (4264), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:16,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3531 states to 3531 states and 4417 transitions. [2022-01-10 08:25:16,871 INFO L78 Accepts]: Start accepts. Automaton has 3531 states and 4417 transitions. Word has length 190 [2022-01-10 08:25:16,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:16,872 INFO L470 AbstractCegarLoop]: Abstraction has 3531 states and 4417 transitions. [2022-01-10 08:25:16,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:16,872 INFO L276 IsEmpty]: Start isEmpty. Operand 3531 states and 4417 transitions. [2022-01-10 08:25:16,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:16,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:16,873 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:16,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (47)] Ended with exit code 0 [2022-01-10 08:25:17,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:17,073 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:17,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:17,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1353220788, now seen corresponding path program 1 times [2022-01-10 08:25:17,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:17,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245661242] [2022-01-10 08:25:17,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:17,074 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:17,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:17,075 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:17,076 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-01-10 08:25:17,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:17,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 482 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:17,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:17,375 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 08:25:17,375 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:17,375 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:17,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245661242] [2022-01-10 08:25:17,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245661242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:17,375 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:17,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:17,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320956023] [2022-01-10 08:25:17,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:17,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:17,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:17,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:17,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:17,376 INFO L87 Difference]: Start difference. First operand 3531 states and 4417 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:17,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:17,885 INFO L93 Difference]: Finished difference Result 9587 states and 12136 transitions. [2022-01-10 08:25:17,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:17,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:17,896 INFO L225 Difference]: With dead ends: 9587 [2022-01-10 08:25:17,896 INFO L226 Difference]: Without dead ends: 6079 [2022-01-10 08:25:17,901 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:17,901 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 250 mSDsluCounter, 1835 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 2407 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:17,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 2407 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:17,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6079 states. [2022-01-10 08:25:18,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6079 to 3615. [2022-01-10 08:25:18,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3615 states, 3472 states have (on average 1.2523041474654377) internal successors, (4348), 3475 states have internal predecessors, (4348), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:18,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3615 states to 3615 states and 4501 transitions. [2022-01-10 08:25:18,281 INFO L78 Accepts]: Start accepts. Automaton has 3615 states and 4501 transitions. Word has length 190 [2022-01-10 08:25:18,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:18,281 INFO L470 AbstractCegarLoop]: Abstraction has 3615 states and 4501 transitions. [2022-01-10 08:25:18,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:18,281 INFO L276 IsEmpty]: Start isEmpty. Operand 3615 states and 4501 transitions. [2022-01-10 08:25:18,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:18,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:18,282 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:18,290 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-01-10 08:25:18,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:18,483 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:18,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:18,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1947052810, now seen corresponding path program 1 times [2022-01-10 08:25:18,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:18,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131432767] [2022-01-10 08:25:18,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:18,484 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:18,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:18,485 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:18,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Waiting until timeout for monitored process [2022-01-10 08:25:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:18,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 481 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:18,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:18,818 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 08:25:18,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:18,818 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:18,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131432767] [2022-01-10 08:25:18,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131432767] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:18,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:18,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:18,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513245550] [2022-01-10 08:25:18,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:18,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:18,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:18,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:18,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:18,820 INFO L87 Difference]: Start difference. First operand 3615 states and 4501 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:19,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:19,184 INFO L93 Difference]: Finished difference Result 7361 states and 9220 transitions. [2022-01-10 08:25:19,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:19,184 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:19,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:19,191 INFO L225 Difference]: With dead ends: 7361 [2022-01-10 08:25:19,191 INFO L226 Difference]: Without dead ends: 3769 [2022-01-10 08:25:19,195 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:19,195 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 205 mSDsluCounter, 1790 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 205 SdHoareTripleChecker+Valid, 2362 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:19,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [205 Valid, 2362 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:19,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3769 states. [2022-01-10 08:25:19,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3769 to 3621. [2022-01-10 08:25:19,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3621 states, 3478 states have (on average 1.2443933294997125) internal successors, (4328), 3481 states have internal predecessors, (4328), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3621 states to 3621 states and 4481 transitions. [2022-01-10 08:25:19,533 INFO L78 Accepts]: Start accepts. Automaton has 3621 states and 4481 transitions. Word has length 190 [2022-01-10 08:25:19,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:19,533 INFO L470 AbstractCegarLoop]: Abstraction has 3621 states and 4481 transitions. [2022-01-10 08:25:19,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:19,533 INFO L276 IsEmpty]: Start isEmpty. Operand 3621 states and 4481 transitions. [2022-01-10 08:25:19,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:19,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:19,534 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:19,542 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (49)] Ended with exit code 0 [2022-01-10 08:25:19,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:19,735 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:19,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:19,735 INFO L85 PathProgramCache]: Analyzing trace with hash -781156536, now seen corresponding path program 1 times [2022-01-10 08:25:19,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:19,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1342070231] [2022-01-10 08:25:19,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:19,736 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:19,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:19,736 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:19,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-01-10 08:25:19,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 480 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:19,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:20,061 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 08:25:20,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:20,061 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:20,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1342070231] [2022-01-10 08:25:20,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1342070231] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:20,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:20,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:20,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769972119] [2022-01-10 08:25:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:20,062 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:20,062 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:20,062 INFO L87 Difference]: Start difference. First operand 3621 states and 4481 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:20,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:20,433 INFO L93 Difference]: Finished difference Result 7345 states and 9144 transitions. [2022-01-10 08:25:20,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:20,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:20,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:20,439 INFO L225 Difference]: With dead ends: 7345 [2022-01-10 08:25:20,439 INFO L226 Difference]: Without dead ends: 3747 [2022-01-10 08:25:20,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:20,443 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 166 mSDsluCounter, 1775 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 2347 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:20,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 2347 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:20,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2022-01-10 08:25:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3627. [2022-01-10 08:25:20,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3484 states have (on average 1.2365097588978187) internal successors, (4308), 3487 states have internal predecessors, (4308), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 4461 transitions. [2022-01-10 08:25:20,767 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 4461 transitions. Word has length 190 [2022-01-10 08:25:20,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:20,767 INFO L470 AbstractCegarLoop]: Abstraction has 3627 states and 4461 transitions. [2022-01-10 08:25:20,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:20,767 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 4461 transitions. [2022-01-10 08:25:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:20,768 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:20,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:20,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:20,968 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:20,969 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:20,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:20,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1436473862, now seen corresponding path program 1 times [2022-01-10 08:25:20,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:20,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1922167995] [2022-01-10 08:25:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:20,970 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:20,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:20,970 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:20,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Waiting until timeout for monitored process [2022-01-10 08:25:21,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:21,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:21,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:21,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:25:21,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:21,291 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:21,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1922167995] [2022-01-10 08:25:21,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1922167995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:21,291 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:21,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:21,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897813817] [2022-01-10 08:25:21,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:21,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:21,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:21,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:21,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:21,292 INFO L87 Difference]: Start difference. First operand 3627 states and 4461 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:21,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:21,666 INFO L93 Difference]: Finished difference Result 7329 states and 9068 transitions. [2022-01-10 08:25:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:21,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:21,674 INFO L225 Difference]: With dead ends: 7329 [2022-01-10 08:25:21,674 INFO L226 Difference]: Without dead ends: 3725 [2022-01-10 08:25:21,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:21,677 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 127 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:21,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 2332 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3725 states. [2022-01-10 08:25:21,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3725 to 3633. [2022-01-10 08:25:22,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3633 states, 3490 states have (on average 1.2286532951289397) internal successors, (4288), 3493 states have internal predecessors, (4288), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:22,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3633 states to 3633 states and 4441 transitions. [2022-01-10 08:25:22,006 INFO L78 Accepts]: Start accepts. Automaton has 3633 states and 4441 transitions. Word has length 190 [2022-01-10 08:25:22,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:22,007 INFO L470 AbstractCegarLoop]: Abstraction has 3633 states and 4441 transitions. [2022-01-10 08:25:22,007 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:22,007 INFO L276 IsEmpty]: Start isEmpty. Operand 3633 states and 4441 transitions. [2022-01-10 08:25:22,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:22,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:22,008 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:22,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (51)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:22,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:22,208 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:22,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:22,209 INFO L85 PathProgramCache]: Analyzing trace with hash -950035644, now seen corresponding path program 1 times [2022-01-10 08:25:22,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:22,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1808920134] [2022-01-10 08:25:22,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:22,209 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:22,209 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:22,210 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:22,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-01-10 08:25:22,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:22,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:22,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:22,515 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 08:25:22,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:22,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:22,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1808920134] [2022-01-10 08:25:22,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1808920134] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:22,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:22,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:22,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343967381] [2022-01-10 08:25:22,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:22,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:22,516 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:22,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:22,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:22,517 INFO L87 Difference]: Start difference. First operand 3633 states and 4441 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:22,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:22,977 INFO L93 Difference]: Finished difference Result 7313 states and 8992 transitions. [2022-01-10 08:25:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:22,977 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:22,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:22,986 INFO L225 Difference]: With dead ends: 7313 [2022-01-10 08:25:22,986 INFO L226 Difference]: Without dead ends: 3703 [2022-01-10 08:25:22,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:22,995 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 88 mSDsluCounter, 1745 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 2317 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:22,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 2317 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:22,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3703 states. [2022-01-10 08:25:23,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3703 to 3639. [2022-01-10 08:25:23,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3639 states, 3496 states have (on average 1.2208237986270023) internal successors, (4268), 3499 states have internal predecessors, (4268), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:23,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3639 states to 3639 states and 4421 transitions. [2022-01-10 08:25:23,348 INFO L78 Accepts]: Start accepts. Automaton has 3639 states and 4421 transitions. Word has length 190 [2022-01-10 08:25:23,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:23,348 INFO L470 AbstractCegarLoop]: Abstraction has 3639 states and 4421 transitions. [2022-01-10 08:25:23,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:23,348 INFO L276 IsEmpty]: Start isEmpty. Operand 3639 states and 4421 transitions. [2022-01-10 08:25:23,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:23,349 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:23,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:23,357 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-01-10 08:25:23,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:23,551 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:23,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:23,551 INFO L85 PathProgramCache]: Analyzing trace with hash -1004428542, now seen corresponding path program 1 times [2022-01-10 08:25:23,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:23,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1323487463] [2022-01-10 08:25:23,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:23,552 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:23,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:23,553 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:23,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Waiting until timeout for monitored process [2022-01-10 08:25:23,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:23,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 477 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:25:23,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:23,885 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 08:25:23,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:23,886 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:23,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1323487463] [2022-01-10 08:25:23,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1323487463] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:23,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:23,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:25:23,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757642190] [2022-01-10 08:25:23,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:23,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:23,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:23,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:23,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:23,887 INFO L87 Difference]: Start difference. First operand 3639 states and 4421 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:24,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:24,249 INFO L93 Difference]: Finished difference Result 7269 states and 8880 transitions. [2022-01-10 08:25:24,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:24,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2022-01-10 08:25:24,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:24,257 INFO L225 Difference]: With dead ends: 7269 [2022-01-10 08:25:24,257 INFO L226 Difference]: Without dead ends: 3653 [2022-01-10 08:25:24,261 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:24,262 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 10 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2287 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:24,262 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 2287 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:24,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3653 states. [2022-01-10 08:25:24,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3653 to 3645. [2022-01-10 08:25:24,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3502 states have (on average 1.2130211307824101) internal successors, (4248), 3505 states have internal predecessors, (4248), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 4401 transitions. [2022-01-10 08:25:24,591 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 4401 transitions. Word has length 190 [2022-01-10 08:25:24,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:24,591 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 4401 transitions. [2022-01-10 08:25:24,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 5 states have internal predecessors, (179), 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 08:25:24,591 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 4401 transitions. [2022-01-10 08:25:24,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:24,592 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:24,592 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:24,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (53)] Ended with exit code 0 [2022-01-10 08:25:24,796 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:24,796 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:24,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:24,797 INFO L85 PathProgramCache]: Analyzing trace with hash 533911488, now seen corresponding path program 1 times [2022-01-10 08:25:24,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:24,797 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775254857] [2022-01-10 08:25:24,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:24,797 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:24,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:24,798 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:24,799 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-01-10 08:25:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:25,192 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 08:25:25,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:25,192 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:25,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775254857] [2022-01-10 08:25:25,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775254857] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:25,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:25,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:25,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914110911] [2022-01-10 08:25:25,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:25,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:25,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:25,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:25,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:25,193 INFO L87 Difference]: Start difference. First operand 3645 states and 4401 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:25,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:25,851 INFO L93 Difference]: Finished difference Result 7268 states and 8773 transitions. [2022-01-10 08:25:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:25,855 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-01-10 08:25:25,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:25,865 INFO L225 Difference]: With dead ends: 7268 [2022-01-10 08:25:25,866 INFO L226 Difference]: Without dead ends: 3645 [2022-01-10 08:25:25,871 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:25,872 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 641 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1155 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:25,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [661 Valid, 1155 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:25,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2022-01-10 08:25:26,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2022-01-10 08:25:26,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3502 states have (on average 1.2110222729868647) internal successors, (4241), 3505 states have internal predecessors, (4241), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:26,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 4394 transitions. [2022-01-10 08:25:26,245 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 4394 transitions. Word has length 190 [2022-01-10 08:25:26,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:26,245 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 4394 transitions. [2022-01-10 08:25:26,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:26,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 4394 transitions. [2022-01-10 08:25:26,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:26,254 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:26,254 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:26,262 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-01-10 08:25:26,462 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:26,462 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:26,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:26,463 INFO L85 PathProgramCache]: Analyzing trace with hash -363481790, now seen corresponding path program 1 times [2022-01-10 08:25:26,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:26,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [105734205] [2022-01-10 08:25:26,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:26,463 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:26,463 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:26,464 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:26,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Waiting until timeout for monitored process [2022-01-10 08:25:26,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:26,590 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:26,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:26,850 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 08:25:26,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:26,851 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:26,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [105734205] [2022-01-10 08:25:26,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [105734205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:26,851 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:26,851 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:26,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791078295] [2022-01-10 08:25:26,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:26,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:26,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:26,852 INFO L87 Difference]: Start difference. First operand 3645 states and 4394 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:27,514 INFO L93 Difference]: Finished difference Result 7268 states and 8759 transitions. [2022-01-10 08:25:27,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:25:27,514 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-01-10 08:25:27,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:27,523 INFO L225 Difference]: With dead ends: 7268 [2022-01-10 08:25:27,523 INFO L226 Difference]: Without dead ends: 3645 [2022-01-10 08:25:27,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 186 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 08:25:27,528 INFO L933 BasicCegarLoop]: 539 mSDtfsCounter, 628 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 292 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1148 SdHoareTripleChecker+Invalid, 328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 292 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:27,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [648 Valid, 1148 Invalid, 328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 292 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:27,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3645 states. [2022-01-10 08:25:27,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3645 to 3645. [2022-01-10 08:25:27,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 3502 states have (on average 1.2090234151913193) internal successors, (4234), 3505 states have internal predecessors, (4234), 77 states have call successors, (77), 65 states have call predecessors, (77), 65 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:27,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 4387 transitions. [2022-01-10 08:25:27,912 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 4387 transitions. Word has length 190 [2022-01-10 08:25:27,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:27,912 INFO L470 AbstractCegarLoop]: Abstraction has 3645 states and 4387 transitions. [2022-01-10 08:25:27,912 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:27,912 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 4387 transitions. [2022-01-10 08:25:27,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:27,913 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:27,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:27,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (55)] Ended with exit code 0 [2022-01-10 08:25:28,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:28,114 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:28,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:28,115 INFO L85 PathProgramCache]: Analyzing trace with hash -1207487292, now seen corresponding path program 1 times [2022-01-10 08:25:28,115 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:28,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1624725873] [2022-01-10 08:25:28,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:28,115 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:28,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:28,116 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:28,116 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-01-10 08:25:28,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:28,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 474 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:25:28,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:28,530 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 08:25:28,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:28,530 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:28,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1624725873] [2022-01-10 08:25:28,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1624725873] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:28,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:28,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:28,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78892859] [2022-01-10 08:25:28,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:28,532 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:25:28,532 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:28,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:25:28,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:25:28,532 INFO L87 Difference]: Start difference. First operand 3645 states and 4387 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:29,343 INFO L93 Difference]: Finished difference Result 7482 states and 9035 transitions. [2022-01-10 08:25:29,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:25:29,344 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-01-10 08:25:29,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:29,350 INFO L225 Difference]: With dead ends: 7482 [2022-01-10 08:25:29,351 INFO L226 Difference]: Without dead ends: 3859 [2022-01-10 08:25:29,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-01-10 08:25:29,355 INFO L933 BasicCegarLoop]: 590 mSDtfsCounter, 781 mSDsluCounter, 604 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:29,355 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [801 Valid, 1194 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:25:29,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2022-01-10 08:25:29,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 3767. [2022-01-10 08:25:29,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3767 states, 3622 states have (on average 1.1946438431805633) internal successors, (4327), 3625 states have internal predecessors, (4327), 77 states have call successors, (77), 67 states have call predecessors, (77), 67 states have return successors, (76), 75 states have call predecessors, (76), 75 states have call successors, (76) [2022-01-10 08:25:29,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3767 states to 3767 states and 4480 transitions. [2022-01-10 08:25:29,750 INFO L78 Accepts]: Start accepts. Automaton has 3767 states and 4480 transitions. Word has length 190 [2022-01-10 08:25:29,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:29,751 INFO L470 AbstractCegarLoop]: Abstraction has 3767 states and 4480 transitions. [2022-01-10 08:25:29,751 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 08:25:29,751 INFO L276 IsEmpty]: Start isEmpty. Operand 3767 states and 4480 transitions. [2022-01-10 08:25:29,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-01-10 08:25:29,752 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:29,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:29,760 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-01-10 08:25:29,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:29,955 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:29,956 INFO L85 PathProgramCache]: Analyzing trace with hash 715740742, now seen corresponding path program 1 times [2022-01-10 08:25:29,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [196862256] [2022-01-10 08:25:29,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:29,956 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:29,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:29,957 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:29,958 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Waiting until timeout for monitored process [2022-01-10 08:25:30,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:30,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 473 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:30,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:30,332 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 08:25:30,332 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:30,332 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:30,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [196862256] [2022-01-10 08:25:30,332 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [196862256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:30,333 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:30,333 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:25:30,333 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359067047] [2022-01-10 08:25:30,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:30,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:30,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:30,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:30,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:30,334 INFO L87 Difference]: Start difference. First operand 3767 states and 4480 transitions. Second operand has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:25:31,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:31,140 INFO L93 Difference]: Finished difference Result 11198 states and 13349 transitions. [2022-01-10 08:25:31,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:31,141 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 190 [2022-01-10 08:25:31,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:31,154 INFO L225 Difference]: With dead ends: 11198 [2022-01-10 08:25:31,154 INFO L226 Difference]: Without dead ends: 7454 [2022-01-10 08:25:31,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 188 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 08:25:31,162 INFO L933 BasicCegarLoop]: 638 mSDtfsCounter, 357 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1157 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 08:25:31,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [357 Valid, 1157 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:31,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7454 states. [2022-01-10 08:25:31,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7454 to 7452. [2022-01-10 08:25:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7452 states, 7169 states have (on average 1.1880318035988282) internal successors, (8517), 7175 states have internal predecessors, (8517), 148 states have call successors, (148), 133 states have call predecessors, (148), 134 states have return successors, (148), 144 states have call predecessors, (148), 146 states have call successors, (148) [2022-01-10 08:25:31,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7452 states to 7452 states and 8813 transitions. [2022-01-10 08:25:31,920 INFO L78 Accepts]: Start accepts. Automaton has 7452 states and 8813 transitions. Word has length 190 [2022-01-10 08:25:31,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:31,920 INFO L470 AbstractCegarLoop]: Abstraction has 7452 states and 8813 transitions. [2022-01-10 08:25:31,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 59.666666666666664) internal successors, (179), 2 states have internal predecessors, (179), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2022-01-10 08:25:31,920 INFO L276 IsEmpty]: Start isEmpty. Operand 7452 states and 8813 transitions. [2022-01-10 08:25:31,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 08:25:31,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:31,924 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:25:31,932 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (57)] Ended with exit code 0 [2022-01-10 08:25:32,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:32,132 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:32,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:32,133 INFO L85 PathProgramCache]: Analyzing trace with hash -434208917, now seen corresponding path program 1 times [2022-01-10 08:25:32,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:32,133 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [80668782] [2022-01-10 08:25:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:32,133 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:32,133 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:32,134 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:32,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-01-10 08:25:32,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:32,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 659 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:25:32,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 89 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:25:32,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:32,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:32,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [80668782] [2022-01-10 08:25:32,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [80668782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:32,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:32,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:25:32,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466036418] [2022-01-10 08:25:32,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:32,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:25:32,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:32,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:25:32,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:25:32,646 INFO L87 Difference]: Start difference. First operand 7452 states and 8813 transitions. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 2 states have call successors, (9), 2 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 08:25:34,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:34,022 INFO L93 Difference]: Finished difference Result 21799 states and 25880 transitions. [2022-01-10 08:25:34,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:25:34,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 2 states have call successors, (9), 2 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 309 [2022-01-10 08:25:34,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:34,047 INFO L225 Difference]: With dead ends: 21799 [2022-01-10 08:25:34,047 INFO L226 Difference]: Without dead ends: 14370 [2022-01-10 08:25:34,059 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 307 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 08:25:34,059 INFO L933 BasicCegarLoop]: 637 mSDtfsCounter, 361 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 1156 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 08:25:34,059 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [361 Valid, 1156 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:25:34,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14370 states. [2022-01-10 08:25:35,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14370 to 14358. [2022-01-10 08:25:35,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14358 states, 13815 states have (on average 1.1840028954035469) internal successors, (16357), 13825 states have internal predecessors, (16357), 282 states have call successors, (282), 257 states have call predecessors, (282), 260 states have return successors, (284), 276 states have call predecessors, (284), 280 states have call successors, (284) [2022-01-10 08:25:35,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14358 states to 14358 states and 16923 transitions. [2022-01-10 08:25:35,655 INFO L78 Accepts]: Start accepts. Automaton has 14358 states and 16923 transitions. Word has length 309 [2022-01-10 08:25:35,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:25:35,655 INFO L470 AbstractCegarLoop]: Abstraction has 14358 states and 16923 transitions. [2022-01-10 08:25:35,655 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 2 states have internal predecessors, (285), 2 states have call successors, (9), 2 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 08:25:35,655 INFO L276 IsEmpty]: Start isEmpty. Operand 14358 states and 16923 transitions. [2022-01-10 08:25:35,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2022-01-10 08:25:35,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:25:35,661 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:25:35,670 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (58)] Forceful destruction successful, exit code 0 [2022-01-10 08:25:35,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:25:35,870 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:25:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:25:35,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1404748600, now seen corresponding path program 1 times [2022-01-10 08:25:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:25:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [288226749] [2022-01-10 08:25:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:25:35,871 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:25:35,871 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:25:35,872 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-01-10 08:25:35,873 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (59)] Waiting until timeout for monitored process [2022-01-10 08:25:36,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:25:36,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:25:36,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:25:36,448 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-01-10 08:25:36,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:25:36,449 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:25:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [288226749] [2022-01-10 08:25:36,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [288226749] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:25:36,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:25:36,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:25:36,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147262421] [2022-01-10 08:25:36,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:25:36,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:25:36,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:25:36,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:25:36,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:25:36,450 INFO L87 Difference]: Start difference. First operand 14358 states and 16923 transitions. Second operand has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 08:25:39,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:25:39,537 INFO L93 Difference]: Finished difference Result 42832 states and 50430 transitions. [2022-01-10 08:25:39,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:25:39,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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 309 [2022-01-10 08:25:39,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:25:39,579 INFO L225 Difference]: With dead ends: 42832 [2022-01-10 08:25:39,579 INFO L226 Difference]: Without dead ends: 28498 [2022-01-10 08:25:39,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 310 GetRequests, 307 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 08:25:39,593 INFO L933 BasicCegarLoop]: 829 mSDtfsCounter, 748 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1840 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:25:39,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1840 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:25:39,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28498 states.