/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.04.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 08:22:54,224 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 08:22:54,226 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 08:22:54,286 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-10 08:22:54,286 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-10 08:22:54,287 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-10 08:22:54,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-10 08:22:54,304 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-10 08:22:54,305 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-10 08:22:54,306 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-10 08:22:54,307 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-10 08:22:54,308 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-10 08:22:54,308 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 08:22:54,309 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 08:22:54,309 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 08:22:54,310 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 08:22:54,311 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 08:22:54,312 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 08:22:54,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 08:22:54,314 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 08:22:54,318 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 08:22:54,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 08:22:54,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 08:22:54,330 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 08:22:54,332 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-01-10 08:22:54,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-01-10 08:22:54,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-01-10 08:22:54,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-01-10 08:22:54,334 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-01-10 08:22:54,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-01-10 08:22:54,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-10 08:22:54,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-10 08:22:54,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-10 08:22:54,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-10 08:22:54,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-10 08:22:54,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-10 08:22:54,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-10 08:22:54,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-10 08:22:54,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 08:22:54,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 08:22:54,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 08:22:54,340 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 08:22:54,362 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 08:22:54,363 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 08:22:54,363 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 08:22:54,363 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 08:22:54,364 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 08:22:54,364 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 08:22:54,364 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 08:22:54,364 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 08:22:54,364 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 08:22:54,365 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 08:22:54,365 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 08:22:54,366 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 08:22:54,366 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:22:54,366 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 08:22:54,367 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-01-10 08:22:54,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 08:22:54,569 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 08:22:54,585 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 08:22:54,587 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 08:22:54,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 08:22:54,591 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 08:22:54,592 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-01-10 08:22:54,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae2ad6f/c423c16fa8094474a83b0b7b560139bb/FLAG2a9100402 [2022-01-10 08:22:55,042 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 08:22:55,046 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-01-10 08:22:55,059 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae2ad6f/c423c16fa8094474a83b0b7b560139bb/FLAG2a9100402 [2022-01-10 08:22:55,069 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/15ae2ad6f/c423c16fa8094474a83b0b7b560139bb [2022-01-10 08:22:55,072 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 08:22:55,073 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 08:22:55,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 08:22:55,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 08:22:55,082 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 08:22:55,082 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,083 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6359f5e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55, skipping insertion in model container [2022-01-10 08:22:55,083 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,089 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 08:22:55,143 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 08:22:55,266 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.04.cil-2.c[911,924] [2022-01-10 08:22:55,350 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.04.cil-2.c[8416,8429] [2022-01-10 08:22:55,415 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:22:55,433 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 08:22:55,446 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.04.cil-2.c[911,924] [2022-01-10 08:22:55,464 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.04.cil-2.c[8416,8429] [2022-01-10 08:22:55,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 08:22:55,504 INFO L208 MainTranslator]: Completed translation [2022-01-10 08:22:55,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55 WrapperNode [2022-01-10 08:22:55,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 08:22:55,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 08:22:55,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 08:22:55,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 08:22:55,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,564 INFO L137 Inliner]: procedures = 64, calls = 74, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 594 [2022-01-10 08:22:55,564 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 08:22:55,565 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 08:22:55,565 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 08:22:55,565 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 08:22:55,572 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,572 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,576 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,577 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,602 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 08:22:55,603 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 08:22:55,603 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 08:22:55,603 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 08:22:55,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (1/1) ... [2022-01-10 08:22:55,622 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 08:22:55,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 08:22:55,648 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 08:22:55,667 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 08:22:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 08:22:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 08:22:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 08:22:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 08:22:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 08:22:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 08:22:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 08:22:55,681 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 08:22:55,681 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 08:22:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 08:22:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 08:22:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 08:22:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 08:22:55,682 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 08:22:55,682 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 08:22:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 08:22:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 08:22:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 08:22:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 08:22:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 08:22:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 08:22:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 08:22:55,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 08:22:55,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 08:22:55,684 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 08:22:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 08:22:55,684 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-01-10 08:22:55,684 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-01-10 08:22:55,766 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 08:22:55,767 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 08:22:56,346 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1bv32 == ~q_free~0); [2022-01-10 08:22:56,346 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 08:22:56,421 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 08:22:56,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 08:22:56,430 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-01-10 08:22:56,439 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:22:56 BoogieIcfgContainer [2022-01-10 08:22:56,440 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 08:22:56,441 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 08:22:56,441 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 08:22:56,444 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 08:22:56,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 08:22:55" (1/3) ... [2022-01-10 08:22:56,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e344a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:22:56, skipping insertion in model container [2022-01-10 08:22:56,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 08:22:55" (2/3) ... [2022-01-10 08:22:56,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e344a87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 08:22:56, skipping insertion in model container [2022-01-10 08:22:56,445 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 08:22:56" (3/3) ... [2022-01-10 08:22:56,447 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-01-10 08:22:56,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 08:22:56,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 08:22:56,508 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 08:22:56,513 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 08:22:56,513 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 08:22:56,532 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 253 states have (on average 1.592885375494071) internal successors, (403), 261 states have internal predecessors, (403), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-01-10 08:22:56,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:22:56,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:56,541 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 08:22:56,541 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:56,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash 101820907, now seen corresponding path program 1 times [2022-01-10 08:22:56,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:56,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [492787309] [2022-01-10 08:22:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:56,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:56,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:56,559 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 08:22:56,592 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 08:22:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:56,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-10 08:22:56,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:56,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:56,871 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:56,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:56,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [492787309] [2022-01-10 08:22:56,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [492787309] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:56,873 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:56,873 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:22:56,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862610993] [2022-01-10 08:22:56,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:56,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:22:56,881 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:56,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:22:56,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:22:56,914 INFO L87 Difference]: Start difference. First operand has 307 states, 253 states have (on average 1.592885375494071) internal successors, (403), 261 states have internal predecessors, (403), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) 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 08:22:57,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:57,549 INFO L93 Difference]: Finished difference Result 711 states and 1103 transitions. [2022-01-10 08:22:57,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:57,551 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 08:22:57,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:57,563 INFO L225 Difference]: With dead ends: 711 [2022-01-10 08:22:57,563 INFO L226 Difference]: Without dead ends: 414 [2022-01-10 08:22:57,568 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 08:22:57,571 INFO L933 BasicCegarLoop]: 448 mSDtfsCounter, 353 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 1165 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:22:57,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 1165 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:22:57,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-10 08:22:57,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 408. [2022-01-10 08:22:57,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 335 states have (on average 1.480597014925373) internal successors, (496), 342 states have internal predecessors, (496), 49 states have call successors, (49), 22 states have call predecessors, (49), 22 states have return successors, (50), 46 states have call predecessors, (50), 45 states have call successors, (50) [2022-01-10 08:22:57,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 595 transitions. [2022-01-10 08:22:57,636 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 595 transitions. Word has length 65 [2022-01-10 08:22:57,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:57,636 INFO L470 AbstractCegarLoop]: Abstraction has 408 states and 595 transitions. [2022-01-10 08:22:57,637 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 08:22:57,637 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 595 transitions. [2022-01-10 08:22:57,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 08:22:57,640 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:57,641 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 08:22:57,651 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 08:22:57,850 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 08:22:57,851 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:57,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:57,851 INFO L85 PathProgramCache]: Analyzing trace with hash -2060778709, now seen corresponding path program 1 times [2022-01-10 08:22:57,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:57,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1372862346] [2022-01-10 08:22:57,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:57,853 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:57,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:57,854 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 08:22:57,855 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 08:22:57,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:57,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:57,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:58,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:58,055 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:58,056 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:58,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1372862346] [2022-01-10 08:22:58,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1372862346] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:58,061 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:58,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:58,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863554930] [2022-01-10 08:22:58,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:58,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:58,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:58,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:58,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:58,064 INFO L87 Difference]: Start difference. First operand 408 states and 595 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 08:22:58,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:58,136 INFO L93 Difference]: Finished difference Result 810 states and 1154 transitions. [2022-01-10 08:22:58,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:58,137 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 08:22:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:58,141 INFO L225 Difference]: With dead ends: 810 [2022-01-10 08:22:58,141 INFO L226 Difference]: Without dead ends: 601 [2022-01-10 08:22:58,145 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 08:22:58,146 INFO L933 BasicCegarLoop]: 468 mSDtfsCounter, 401 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 597 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 08:22:58,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 597 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:58,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 601 states. [2022-01-10 08:22:58,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 601 to 593. [2022-01-10 08:22:58,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 484 states have (on average 1.4483471074380165) internal successors, (701), 493 states have internal predecessors, (701), 69 states have call successors, (69), 36 states have call predecessors, (69), 38 states have return successors, (73), 66 states have call predecessors, (73), 65 states have call successors, (73) [2022-01-10 08:22:58,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 843 transitions. [2022-01-10 08:22:58,216 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 843 transitions. Word has length 65 [2022-01-10 08:22:58,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:58,217 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 843 transitions. [2022-01-10 08:22:58,217 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 08:22:58,217 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 843 transitions. [2022-01-10 08:22:58,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:22:58,225 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:58,225 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 08:22:58,242 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 08:22:58,442 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 08:22:58,443 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:58,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:58,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1216370091, now seen corresponding path program 1 times [2022-01-10 08:22:58,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:58,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1632048421] [2022-01-10 08:22:58,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:58,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:58,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:58,445 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 08:22:58,446 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 08:22:58,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:58,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:58,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:58,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:58,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:58,656 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:58,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1632048421] [2022-01-10 08:22:58,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1632048421] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:58,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:58,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:22:58,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050373061] [2022-01-10 08:22:58,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:58,662 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:22:58,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:58,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:22:58,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:58,663 INFO L87 Difference]: Start difference. First operand 593 states and 843 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 08:22:58,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:58,717 INFO L93 Difference]: Finished difference Result 1007 states and 1419 transitions. [2022-01-10 08:22:58,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:58,718 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 08:22:58,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:58,723 INFO L225 Difference]: With dead ends: 1007 [2022-01-10 08:22:58,723 INFO L226 Difference]: Without dead ends: 613 [2022-01-10 08:22:58,726 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 08:22:58,728 INFO L933 BasicCegarLoop]: 435 mSDtfsCounter, 7 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 2168 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 08:22:58,730 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 2168 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:58,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 613 states. [2022-01-10 08:22:58,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 613 to 603. [2022-01-10 08:22:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 603 states, 492 states have (on average 1.4369918699186992) internal successors, (707), 501 states have internal predecessors, (707), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (75), 68 states have call predecessors, (75), 65 states have call successors, (75) [2022-01-10 08:22:58,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 851 transitions. [2022-01-10 08:22:58,764 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 851 transitions. Word has length 66 [2022-01-10 08:22:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:58,766 INFO L470 AbstractCegarLoop]: Abstraction has 603 states and 851 transitions. [2022-01-10 08:22:58,766 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 08:22:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 851 transitions. [2022-01-10 08:22:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 08:22:58,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:58,768 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] [2022-01-10 08:22:58,777 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:58,976 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 08:22:58,977 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:58,978 INFO L85 PathProgramCache]: Analyzing trace with hash 2049237907, now seen corresponding path program 1 times [2022-01-10 08:22:58,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:58,978 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1965790286] [2022-01-10 08:22:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:58,978 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:58,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:58,980 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 08:22:58,981 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 08:22:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:59,052 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:22:59,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:59,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:22:59,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:59,175 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:59,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1965790286] [2022-01-10 08:22:59,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1965790286] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:59,176 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:59,176 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:22:59,176 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873158863] [2022-01-10 08:22:59,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:59,176 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:22:59,177 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:59,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:22:59,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:59,177 INFO L87 Difference]: Start difference. First operand 603 states and 851 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 08:22:59,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:59,240 INFO L93 Difference]: Finished difference Result 1373 states and 1899 transitions. [2022-01-10 08:22:59,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:22:59,240 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 08:22:59,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:59,247 INFO L225 Difference]: With dead ends: 1373 [2022-01-10 08:22:59,247 INFO L226 Difference]: Without dead ends: 969 [2022-01-10 08:22:59,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:22:59,250 INFO L933 BasicCegarLoop]: 444 mSDtfsCounter, 387 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 576 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 08:22:59,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [387 Valid, 576 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:59,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 969 states. [2022-01-10 08:22:59,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 969 to 961. [2022-01-10 08:22:59,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 961 states, 776 states have (on average 1.4007731958762886) internal successors, (1087), 789 states have internal predecessors, (1087), 109 states have call successors, (109), 64 states have call predecessors, (109), 74 states have return successors, (123), 110 states have call predecessors, (123), 105 states have call successors, (123) [2022-01-10 08:22:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 961 states to 961 states and 1319 transitions. [2022-01-10 08:22:59,294 INFO L78 Accepts]: Start accepts. Automaton has 961 states and 1319 transitions. Word has length 66 [2022-01-10 08:22:59,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:59,295 INFO L470 AbstractCegarLoop]: Abstraction has 961 states and 1319 transitions. [2022-01-10 08:22:59,295 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 08:22:59,295 INFO L276 IsEmpty]: Start isEmpty. Operand 961 states and 1319 transitions. [2022-01-10 08:22:59,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:22:59,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:59,297 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 08:22:59,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-01-10 08:22:59,508 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 08:22:59,509 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:22:59,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:22:59,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1023588061, now seen corresponding path program 1 times [2022-01-10 08:22:59,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:22:59,510 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1885795012] [2022-01-10 08:22:59,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:22:59,510 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:22:59,510 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:22:59,511 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 08:22:59,515 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 08:22:59,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:22:59,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:22:59,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:22:59,743 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 08:22:59,743 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:22:59,743 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:22:59,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1885795012] [2022-01-10 08:22:59,743 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1885795012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:22:59,743 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:22:59,744 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:22:59,744 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559137174] [2022-01-10 08:22:59,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:22:59,744 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:22:59,744 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:22:59,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:22:59,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:22:59,745 INFO L87 Difference]: Start difference. First operand 961 states and 1319 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 08:22:59,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:22:59,798 INFO L93 Difference]: Finished difference Result 1751 states and 2387 transitions. [2022-01-10 08:22:59,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:22:59,798 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 08:22:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:22:59,803 INFO L225 Difference]: With dead ends: 1751 [2022-01-10 08:22:59,803 INFO L226 Difference]: Without dead ends: 989 [2022-01-10 08:22:59,805 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 08:22:59,805 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 4 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 2164 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 08:22:59,805 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 2164 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:22:59,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2022-01-10 08:22:59,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 981. [2022-01-10 08:22:59,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 981 states, 792 states have (on average 1.3876262626262625) internal successors, (1099), 805 states have internal predecessors, (1099), 109 states have call successors, (109), 64 states have call predecessors, (109), 78 states have return successors, (127), 114 states have call predecessors, (127), 105 states have call successors, (127) [2022-01-10 08:22:59,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 981 states to 981 states and 1335 transitions. [2022-01-10 08:22:59,839 INFO L78 Accepts]: Start accepts. Automaton has 981 states and 1335 transitions. Word has length 83 [2022-01-10 08:22:59,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:22:59,839 INFO L470 AbstractCegarLoop]: Abstraction has 981 states and 1335 transitions. [2022-01-10 08:22:59,839 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 08:22:59,840 INFO L276 IsEmpty]: Start isEmpty. Operand 981 states and 1335 transitions. [2022-01-10 08:22:59,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:22:59,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:22:59,841 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 08:22:59,851 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 08:23:00,050 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 08:23:00,051 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:00,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:00,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1917074399, now seen corresponding path program 1 times [2022-01-10 08:23:00,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:00,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1805500242] [2022-01-10 08:23:00,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:00,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:00,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:00,053 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 08:23:00,067 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 08:23:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:00,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 08:23:00,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:00,331 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 08:23:00,331 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:00,331 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:00,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1805500242] [2022-01-10 08:23:00,331 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1805500242] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:00,331 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:00,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:00,332 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1756526406] [2022-01-10 08:23:00,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:00,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:00,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:00,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:00,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:00,333 INFO L87 Difference]: Start difference. First operand 981 states and 1335 transitions. Second operand has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:00,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:00,877 INFO L93 Difference]: Finished difference Result 2745 states and 3694 transitions. [2022-01-10 08:23:00,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:23:00,878 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2022-01-10 08:23:00,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:00,885 INFO L225 Difference]: With dead ends: 2745 [2022-01-10 08:23:00,885 INFO L226 Difference]: Without dead ends: 1961 [2022-01-10 08:23:00,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-10 08:23:00,888 INFO L933 BasicCegarLoop]: 460 mSDtfsCounter, 345 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 517 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 517 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:00,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [353 Valid, 1144 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 517 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 08:23:00,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1961 states. [2022-01-10 08:23:00,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1961 to 1851. [2022-01-10 08:23:00,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1851 states, 1480 states have (on average 1.3466216216216216) internal successors, (1993), 1525 states have internal predecessors, (1993), 195 states have call successors, (195), 120 states have call predecessors, (195), 174 states have return successors, (283), 210 states have call predecessors, (283), 191 states have call successors, (283) [2022-01-10 08:23:00,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1851 states to 1851 states and 2471 transitions. [2022-01-10 08:23:00,958 INFO L78 Accepts]: Start accepts. Automaton has 1851 states and 2471 transitions. Word has length 83 [2022-01-10 08:23:00,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:00,958 INFO L470 AbstractCegarLoop]: Abstraction has 1851 states and 2471 transitions. [2022-01-10 08:23:00,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.2) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 08:23:00,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1851 states and 2471 transitions. [2022-01-10 08:23:00,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-01-10 08:23:00,961 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:00,961 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 08:23:00,972 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 08:23:01,170 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 08:23:01,170 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:01,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:01,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1954246175, now seen corresponding path program 1 times [2022-01-10 08:23:01,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:01,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1337552205] [2022-01-10 08:23:01,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:01,172 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:01,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:01,173 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 08:23:01,175 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 08:23:01,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:01,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:01,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:01,387 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 08:23:01,387 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:01,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:01,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1337552205] [2022-01-10 08:23:01,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1337552205] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:01,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:01,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:01,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444844494] [2022-01-10 08:23:01,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:01,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:01,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:01,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:01,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:01,389 INFO L87 Difference]: Start difference. First operand 1851 states and 2471 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 08:23:01,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:01,708 INFO L93 Difference]: Finished difference Result 5087 states and 6774 transitions. [2022-01-10 08:23:01,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:01,709 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 08:23:01,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:01,726 INFO L225 Difference]: With dead ends: 5087 [2022-01-10 08:23:01,726 INFO L226 Difference]: Without dead ends: 3451 [2022-01-10 08:23:01,731 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 08:23:01,732 INFO L933 BasicCegarLoop]: 417 mSDtfsCounter, 578 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 692 SdHoareTripleChecker+Invalid, 229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:01,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 692 Invalid, 229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:01,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3451 states. [2022-01-10 08:23:01,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3451 to 3447. [2022-01-10 08:23:01,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3447 states, 2720 states have (on average 1.3106617647058822) internal successors, (3565), 2813 states have internal predecessors, (3565), 375 states have call successors, (375), 232 states have call predecessors, (375), 350 states have return successors, (620), 410 states have call predecessors, (620), 371 states have call successors, (620) [2022-01-10 08:23:01,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4560 transitions. [2022-01-10 08:23:01,870 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4560 transitions. Word has length 83 [2022-01-10 08:23:01,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:01,871 INFO L470 AbstractCegarLoop]: Abstraction has 3447 states and 4560 transitions. [2022-01-10 08:23:01,871 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 08:23:01,871 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4560 transitions. [2022-01-10 08:23:01,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-01-10 08:23:01,875 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:01,875 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 08:23:01,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:02,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-01-10 08:23:02,085 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:02,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:02,085 INFO L85 PathProgramCache]: Analyzing trace with hash 340321045, now seen corresponding path program 1 times [2022-01-10 08:23:02,086 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:02,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1797885150] [2022-01-10 08:23:02,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:02,086 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:02,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:02,087 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 08:23:02,089 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 08:23:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:02,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:02,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:02,283 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 08:23:02,283 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:02,283 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:02,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1797885150] [2022-01-10 08:23:02,283 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1797885150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:02,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:02,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:02,284 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141261318] [2022-01-10 08:23:02,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:02,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:02,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:02,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:02,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:02,285 INFO L87 Difference]: Start difference. First operand 3447 states and 4560 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 08:23:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:02,482 INFO L93 Difference]: Finished difference Result 9707 states and 12781 transitions. [2022-01-10 08:23:02,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:02,483 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 08:23:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:02,506 INFO L225 Difference]: With dead ends: 9707 [2022-01-10 08:23:02,506 INFO L226 Difference]: Without dead ends: 5015 [2022-01-10 08:23:02,517 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 08:23:02,517 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 116 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 982 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 08:23:02,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 982 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:02,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2022-01-10 08:23:02,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 5015. [2022-01-10 08:23:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5015 states, 3944 states have (on average 1.2984279918864097) internal successors, (5121), 4077 states have internal predecessors, (5121), 539 states have call successors, (539), 344 states have call predecessors, (539), 530 states have return successors, (952), 602 states have call predecessors, (952), 535 states have call successors, (952) [2022-01-10 08:23:02,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 6612 transitions. [2022-01-10 08:23:02,696 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 6612 transitions. Word has length 85 [2022-01-10 08:23:02,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:02,697 INFO L470 AbstractCegarLoop]: Abstraction has 5015 states and 6612 transitions. [2022-01-10 08:23:02,697 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 08:23:02,697 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 6612 transitions. [2022-01-10 08:23:02,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:02,702 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:02,702 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] [2022-01-10 08:23:02,717 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 08:23:02,911 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 08:23:02,912 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:02,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:02,912 INFO L85 PathProgramCache]: Analyzing trace with hash -6968229, now seen corresponding path program 1 times [2022-01-10 08:23:02,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:02,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1094714998] [2022-01-10 08:23:02,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:02,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:02,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:02,915 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 08:23:02,917 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 08:23:03,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:03,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:03,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:03,155 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 08:23:03,155 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:03,155 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:03,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1094714998] [2022-01-10 08:23:03,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1094714998] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:03,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:03,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:03,156 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552530679] [2022-01-10 08:23:03,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:03,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:03,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:03,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:03,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:03,158 INFO L87 Difference]: Start difference. First operand 5015 states and 6612 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 08:23:03,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:03,244 INFO L93 Difference]: Finished difference Result 5189 states and 6875 transitions. [2022-01-10 08:23:03,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:03,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:03,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:03,271 INFO L225 Difference]: With dead ends: 5189 [2022-01-10 08:23:03,271 INFO L226 Difference]: Without dead ends: 5015 [2022-01-10 08:23:03,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 08:23:03,276 INFO L933 BasicCegarLoop]: 434 mSDtfsCounter, 267 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 267 SdHoareTripleChecker+Valid, 591 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 08:23:03,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [267 Valid, 591 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:03,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5015 states. [2022-01-10 08:23:03,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5015 to 5015. [2022-01-10 08:23:03,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5015 states, 3944 states have (on average 1.2981744421906694) internal successors, (5120), 4077 states have internal predecessors, (5120), 539 states have call successors, (539), 344 states have call predecessors, (539), 530 states have return successors, (952), 602 states have call predecessors, (952), 535 states have call successors, (952) [2022-01-10 08:23:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5015 states to 5015 states and 6611 transitions. [2022-01-10 08:23:03,461 INFO L78 Accepts]: Start accepts. Automaton has 5015 states and 6611 transitions. Word has length 91 [2022-01-10 08:23:03,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:03,462 INFO L470 AbstractCegarLoop]: Abstraction has 5015 states and 6611 transitions. [2022-01-10 08:23:03,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 08:23:03,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5015 states and 6611 transitions. [2022-01-10 08:23:03,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:03,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:03,468 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] [2022-01-10 08:23:03,477 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 08:23:03,677 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 08:23:03,677 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:03,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:03,678 INFO L85 PathProgramCache]: Analyzing trace with hash -247207975, now seen corresponding path program 1 times [2022-01-10 08:23:03,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:03,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1705916537] [2022-01-10 08:23:03,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:03,679 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:03,679 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:03,680 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 08:23:03,686 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 08:23:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:03,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:03,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:03,931 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 08:23:03,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:03,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:03,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1705916537] [2022-01-10 08:23:03,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1705916537] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:03,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:03,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:03,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117050680] [2022-01-10 08:23:03,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:03,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:03,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:03,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:03,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:03,933 INFO L87 Difference]: Start difference. First operand 5015 states and 6611 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 08:23:04,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:04,460 INFO L93 Difference]: Finished difference Result 5375 states and 7165 transitions. [2022-01-10 08:23:04,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:04,461 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:04,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:04,483 INFO L225 Difference]: With dead ends: 5375 [2022-01-10 08:23:04,483 INFO L226 Difference]: Without dead ends: 5203 [2022-01-10 08:23:04,486 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:04,487 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 681 mSDsluCounter, 712 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 705 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:04,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [705 Valid, 1170 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 08:23:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5203 states. [2022-01-10 08:23:04,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5203 to 5188. [2022-01-10 08:23:04,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4097 states have (on average 1.3077861850134245) internal successors, (5358), 4231 states have internal predecessors, (5358), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2022-01-10 08:23:04,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6876 transitions. [2022-01-10 08:23:04,725 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6876 transitions. Word has length 91 [2022-01-10 08:23:04,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:04,726 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 6876 transitions. [2022-01-10 08:23:04,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (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 08:23:04,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6876 transitions. [2022-01-10 08:23:04,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:04,734 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:04,734 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] [2022-01-10 08:23:04,745 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 08:23:04,944 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 08:23:04,944 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:04,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:04,944 INFO L85 PathProgramCache]: Analyzing trace with hash 1993054677, now seen corresponding path program 1 times [2022-01-10 08:23:04,945 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:04,945 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1876606447] [2022-01-10 08:23:04,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:04,945 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:04,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:04,946 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 08:23:04,980 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 08:23:05,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:05,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:05,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:05,179 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 08:23:05,179 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:05,179 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:05,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1876606447] [2022-01-10 08:23:05,179 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1876606447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:05,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:05,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:05,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630394551] [2022-01-10 08:23:05,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:05,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:05,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:05,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:05,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:05,181 INFO L87 Difference]: Start difference. First operand 5188 states and 6876 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:05,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:05,576 INFO L93 Difference]: Finished difference Result 5533 states and 7408 transitions. [2022-01-10 08:23:05,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:23:05,576 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:05,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:05,609 INFO L225 Difference]: With dead ends: 5533 [2022-01-10 08:23:05,609 INFO L226 Difference]: Without dead ends: 5188 [2022-01-10 08:23:05,613 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:05,613 INFO L933 BasicCegarLoop]: 397 mSDtfsCounter, 549 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:05,613 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 828 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:05,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-01-10 08:23:05,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-01-10 08:23:05,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4097 states have (on average 1.3060776177690994) internal successors, (5351), 4231 states have internal predecessors, (5351), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2022-01-10 08:23:05,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6869 transitions. [2022-01-10 08:23:05,846 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6869 transitions. Word has length 91 [2022-01-10 08:23:05,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:05,846 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 6869 transitions. [2022-01-10 08:23:05,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:05,847 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6869 transitions. [2022-01-10 08:23:05,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:05,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:05,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:05,863 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 08:23:06,062 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 08:23:06,063 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:06,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:06,063 INFO L85 PathProgramCache]: Analyzing trace with hash 818395225, now seen corresponding path program 1 times [2022-01-10 08:23:06,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:06,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1504743206] [2022-01-10 08:23:06,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:06,064 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:06,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:06,084 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 08:23:06,086 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 08:23:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:06,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:06,174 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:06,315 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 08:23:06,315 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:06,316 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:06,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1504743206] [2022-01-10 08:23:06,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1504743206] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:06,316 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:06,316 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:06,316 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034084898] [2022-01-10 08:23:06,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:06,316 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:06,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:06,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:06,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:06,317 INFO L87 Difference]: Start difference. First operand 5188 states and 6869 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:06,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:06,749 INFO L93 Difference]: Finished difference Result 5533 states and 7394 transitions. [2022-01-10 08:23:06,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:23:06,749 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:06,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:06,768 INFO L225 Difference]: With dead ends: 5533 [2022-01-10 08:23:06,768 INFO L226 Difference]: Without dead ends: 5188 [2022-01-10 08:23:06,771 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:06,771 INFO L933 BasicCegarLoop]: 394 mSDtfsCounter, 543 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:06,772 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [567 Valid, 821 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:06,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-01-10 08:23:06,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-01-10 08:23:06,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4097 states have (on average 1.3043690505247743) internal successors, (5344), 4231 states have internal predecessors, (5344), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2022-01-10 08:23:06,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6862 transitions. [2022-01-10 08:23:06,980 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6862 transitions. Word has length 91 [2022-01-10 08:23:06,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:06,980 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 6862 transitions. [2022-01-10 08:23:06,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:06,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6862 transitions. [2022-01-10 08:23:06,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:06,987 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:06,987 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] [2022-01-10 08:23:06,997 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 08:23:07,196 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 08:23:07,197 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:07,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:07,198 INFO L85 PathProgramCache]: Analyzing trace with hash 1196144981, now seen corresponding path program 1 times [2022-01-10 08:23:07,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:07,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [925561258] [2022-01-10 08:23:07,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:07,198 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:07,198 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:07,199 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 08:23:07,201 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 08:23:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:07,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:07,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:07,431 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 08:23:07,432 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:07,432 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:07,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [925561258] [2022-01-10 08:23:07,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [925561258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:07,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:07,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:07,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051842236] [2022-01-10 08:23:07,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:07,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:07,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:07,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:07,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:07,433 INFO L87 Difference]: Start difference. First operand 5188 states and 6862 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:07,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:07,850 INFO L93 Difference]: Finished difference Result 5533 states and 7380 transitions. [2022-01-10 08:23:07,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:23:07,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:07,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:07,871 INFO L225 Difference]: With dead ends: 5533 [2022-01-10 08:23:07,871 INFO L226 Difference]: Without dead ends: 5188 [2022-01-10 08:23:07,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:07,874 INFO L933 BasicCegarLoop]: 391 mSDtfsCounter, 537 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 814 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:07,875 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 814 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:07,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-01-10 08:23:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-01-10 08:23:08,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4097 states have (on average 1.3026604832804491) internal successors, (5337), 4231 states have internal predecessors, (5337), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2022-01-10 08:23:08,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6855 transitions. [2022-01-10 08:23:08,102 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6855 transitions. Word has length 91 [2022-01-10 08:23:08,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:08,102 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 6855 transitions. [2022-01-10 08:23:08,102 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:08,102 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6855 transitions. [2022-01-10 08:23:08,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:08,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:08,108 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] [2022-01-10 08:23:08,119 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 08:23:08,318 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 08:23:08,318 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:08,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:08,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1208330457, now seen corresponding path program 1 times [2022-01-10 08:23:08,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:08,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1013442177] [2022-01-10 08:23:08,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:08,319 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:08,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:08,320 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 08:23:08,321 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 08:23:08,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:08,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:08,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:08,542 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 08:23:08,542 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:08,542 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:08,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1013442177] [2022-01-10 08:23:08,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1013442177] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:08,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:08,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:08,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940971828] [2022-01-10 08:23:08,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:08,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:08,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:08,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:08,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:08,543 INFO L87 Difference]: Start difference. First operand 5188 states and 6855 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:08,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:08,970 INFO L93 Difference]: Finished difference Result 5533 states and 7366 transitions. [2022-01-10 08:23:08,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-10 08:23:08,971 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:08,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:08,995 INFO L225 Difference]: With dead ends: 5533 [2022-01-10 08:23:08,996 INFO L226 Difference]: Without dead ends: 5188 [2022-01-10 08:23:08,998 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:08,999 INFO L933 BasicCegarLoop]: 388 mSDtfsCounter, 531 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 555 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:08,999 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [555 Valid, 807 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:09,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5188 states. [2022-01-10 08:23:09,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5188 to 5188. [2022-01-10 08:23:09,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5188 states, 4097 states have (on average 1.300951916036124) internal successors, (5330), 4231 states have internal predecessors, (5330), 552 states have call successors, (552), 350 states have call predecessors, (552), 537 states have return successors, (966), 615 states have call predecessors, (966), 548 states have call successors, (966) [2022-01-10 08:23:09,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5188 states to 5188 states and 6848 transitions. [2022-01-10 08:23:09,219 INFO L78 Accepts]: Start accepts. Automaton has 5188 states and 6848 transitions. Word has length 91 [2022-01-10 08:23:09,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:09,220 INFO L470 AbstractCegarLoop]: Abstraction has 5188 states and 6848 transitions. [2022-01-10 08:23:09,220 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:09,220 INFO L276 IsEmpty]: Start isEmpty. Operand 5188 states and 6848 transitions. [2022-01-10 08:23:09,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:09,226 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:09,226 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] [2022-01-10 08:23:09,235 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 08:23:09,435 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 08:23:09,435 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:09,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:09,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1347270869, now seen corresponding path program 1 times [2022-01-10 08:23:09,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:09,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [854636600] [2022-01-10 08:23:09,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:09,436 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:09,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:09,437 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 08:23:09,438 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 08:23:09,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:09,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:09,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:23:09,634 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:09,634 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:09,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [854636600] [2022-01-10 08:23:09,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [854636600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:09,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:09,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:09,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506473798] [2022-01-10 08:23:09,635 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:09,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:09,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:09,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:09,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:09,636 INFO L87 Difference]: Start difference. First operand 5188 states and 6848 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:10,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:10,057 INFO L93 Difference]: Finished difference Result 5613 states and 7474 transitions. [2022-01-10 08:23:10,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:10,060 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:10,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:10,082 INFO L225 Difference]: With dead ends: 5613 [2022-01-10 08:23:10,082 INFO L226 Difference]: Without dead ends: 5268 [2022-01-10 08:23:10,086 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:10,087 INFO L933 BasicCegarLoop]: 386 mSDtfsCounter, 570 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 800 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:10,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 800 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:10,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5268 states. [2022-01-10 08:23:10,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5268 to 5268. [2022-01-10 08:23:10,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5268 states, 4171 states have (on average 1.3006473267801486) internal successors, (5425), 4305 states have internal predecessors, (5425), 554 states have call successors, (554), 354 states have call predecessors, (554), 541 states have return successors, (968), 617 states have call predecessors, (968), 550 states have call successors, (968) [2022-01-10 08:23:10,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5268 states to 5268 states and 6947 transitions. [2022-01-10 08:23:10,338 INFO L78 Accepts]: Start accepts. Automaton has 5268 states and 6947 transitions. Word has length 91 [2022-01-10 08:23:10,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:10,338 INFO L470 AbstractCegarLoop]: Abstraction has 5268 states and 6947 transitions. [2022-01-10 08:23:10,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 5268 states and 6947 transitions. [2022-01-10 08:23:10,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:10,344 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:10,344 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] [2022-01-10 08:23:10,353 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 08:23:10,553 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 08:23:10,554 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1165501584, now seen corresponding path program 1 times [2022-01-10 08:23:10,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:10,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1367932929] [2022-01-10 08:23:10,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:10,555 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:10,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:10,555 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 08:23:10,556 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 08:23:10,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:10,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:10,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:10,773 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 08:23:10,773 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:10,773 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:10,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1367932929] [2022-01-10 08:23:10,773 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1367932929] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:10,773 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:10,773 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:10,773 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414443437] [2022-01-10 08:23:10,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:10,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:10,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:10,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:10,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:10,774 INFO L87 Difference]: Start difference. First operand 5268 states and 6947 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:11,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:11,214 INFO L93 Difference]: Finished difference Result 5773 states and 7672 transitions. [2022-01-10 08:23:11,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:11,214 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:11,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:11,229 INFO L225 Difference]: With dead ends: 5773 [2022-01-10 08:23:11,229 INFO L226 Difference]: Without dead ends: 5348 [2022-01-10 08:23:11,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:11,233 INFO L933 BasicCegarLoop]: 381 mSDtfsCounter, 564 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 791 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:11,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [588 Valid, 791 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:11,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5348 states. [2022-01-10 08:23:11,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5348 to 5348. [2022-01-10 08:23:11,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5348 states, 4245 states have (on average 1.2994110718492344) internal successors, (5516), 4379 states have internal predecessors, (5516), 556 states have call successors, (556), 358 states have call predecessors, (556), 545 states have return successors, (970), 619 states have call predecessors, (970), 552 states have call successors, (970) [2022-01-10 08:23:11,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5348 states to 5348 states and 7042 transitions. [2022-01-10 08:23:11,493 INFO L78 Accepts]: Start accepts. Automaton has 5348 states and 7042 transitions. Word has length 91 [2022-01-10 08:23:11,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:11,493 INFO L470 AbstractCegarLoop]: Abstraction has 5348 states and 7042 transitions. [2022-01-10 08:23:11,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:11,493 INFO L276 IsEmpty]: Start isEmpty. Operand 5348 states and 7042 transitions. [2022-01-10 08:23:11,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:11,498 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:11,499 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] [2022-01-10 08:23:11,513 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 08:23:11,708 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 08:23:11,708 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:11,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash 831401204, now seen corresponding path program 1 times [2022-01-10 08:23:11,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:11,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1003842167] [2022-01-10 08:23:11,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:11,709 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:11,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:11,710 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 08:23:11,710 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 08:23:11,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:11,787 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:11,789 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:11,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 08:23:11,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:11,919 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:11,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1003842167] [2022-01-10 08:23:11,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1003842167] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:11,920 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:11,920 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:11,920 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414918693] [2022-01-10 08:23:11,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:11,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:11,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:11,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:11,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:11,921 INFO L87 Difference]: Start difference. First operand 5348 states and 7042 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:12,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:12,449 INFO L93 Difference]: Finished difference Result 5933 states and 7862 transitions. [2022-01-10 08:23:12,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:12,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:12,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:12,465 INFO L225 Difference]: With dead ends: 5933 [2022-01-10 08:23:12,465 INFO L226 Difference]: Without dead ends: 5428 [2022-01-10 08:23:12,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:12,468 INFO L933 BasicCegarLoop]: 378 mSDtfsCounter, 557 mSDsluCounter, 406 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 581 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:12,469 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [581 Valid, 784 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5428 states. [2022-01-10 08:23:12,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5428 to 5428. [2022-01-10 08:23:12,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5428 states, 4319 states have (on average 1.2972910395924984) internal successors, (5603), 4453 states have internal predecessors, (5603), 558 states have call successors, (558), 362 states have call predecessors, (558), 549 states have return successors, (972), 621 states have call predecessors, (972), 554 states have call successors, (972) [2022-01-10 08:23:12,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5428 states to 5428 states and 7133 transitions. [2022-01-10 08:23:12,722 INFO L78 Accepts]: Start accepts. Automaton has 5428 states and 7133 transitions. Word has length 91 [2022-01-10 08:23:12,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:12,722 INFO L470 AbstractCegarLoop]: Abstraction has 5428 states and 7133 transitions. [2022-01-10 08:23:12,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:12,722 INFO L276 IsEmpty]: Start isEmpty. Operand 5428 states and 7133 transitions. [2022-01-10 08:23:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:12,728 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:12,728 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] [2022-01-10 08:23:12,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:12,936 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 08:23:12,937 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:12,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:12,937 INFO L85 PathProgramCache]: Analyzing trace with hash 729093391, now seen corresponding path program 1 times [2022-01-10 08:23:12,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:12,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1934261300] [2022-01-10 08:23:12,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:12,938 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:12,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:12,939 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 08:23:12,940 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 08:23:13,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:13,014 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:13,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:13,147 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 08:23:13,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:13,148 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:13,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1934261300] [2022-01-10 08:23:13,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1934261300] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:13,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:13,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:13,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255706967] [2022-01-10 08:23:13,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:13,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:13,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:13,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:13,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:13,149 INFO L87 Difference]: Start difference. First operand 5428 states and 7133 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:13,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:13,652 INFO L93 Difference]: Finished difference Result 6093 states and 8044 transitions. [2022-01-10 08:23:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:13,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:13,668 INFO L225 Difference]: With dead ends: 6093 [2022-01-10 08:23:13,668 INFO L226 Difference]: Without dead ends: 5508 [2022-01-10 08:23:13,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 87 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 08:23:13,671 INFO L933 BasicCegarLoop]: 375 mSDtfsCounter, 550 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 574 SdHoareTripleChecker+Valid, 777 SdHoareTripleChecker+Invalid, 375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:13,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [574 Valid, 777 Invalid, 375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 08:23:13,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5508 states. [2022-01-10 08:23:13,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5508 to 5508. [2022-01-10 08:23:13,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5508 states, 4393 states have (on average 1.2943318916458002) internal successors, (5686), 4527 states have internal predecessors, (5686), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:13,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5508 states to 5508 states and 7220 transitions. [2022-01-10 08:23:13,922 INFO L78 Accepts]: Start accepts. Automaton has 5508 states and 7220 transitions. Word has length 91 [2022-01-10 08:23:13,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:13,923 INFO L470 AbstractCegarLoop]: Abstraction has 5508 states and 7220 transitions. [2022-01-10 08:23:13,923 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (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 08:23:13,923 INFO L276 IsEmpty]: Start isEmpty. Operand 5508 states and 7220 transitions. [2022-01-10 08:23:13,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:13,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:13,929 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] [2022-01-10 08:23:13,940 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:14,138 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 08:23:14,138 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:14,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:14,139 INFO L85 PathProgramCache]: Analyzing trace with hash 458962162, now seen corresponding path program 1 times [2022-01-10 08:23:14,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:14,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [902334679] [2022-01-10 08:23:14,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:14,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:14,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:14,141 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 08:23:14,179 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 08:23:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:14,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:14,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:14,361 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 08:23:14,361 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:14,361 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:14,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [902334679] [2022-01-10 08:23:14,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [902334679] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:14,361 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:14,361 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:14,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557700199] [2022-01-10 08:23:14,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:14,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:14,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:14,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:14,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:14,364 INFO L87 Difference]: Start difference. First operand 5508 states and 7220 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:14,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:14,582 INFO L93 Difference]: Finished difference Result 6802 states and 8935 transitions. [2022-01-10 08:23:14,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:14,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:14,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:14,604 INFO L225 Difference]: With dead ends: 6802 [2022-01-10 08:23:14,604 INFO L226 Difference]: Without dead ends: 6138 [2022-01-10 08:23:14,608 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 08:23:14,608 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 170 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 170 SdHoareTripleChecker+Valid, 1711 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 08:23:14,609 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [170 Valid, 1711 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:14,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6138 states. [2022-01-10 08:23:14,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6138 to 5538. [2022-01-10 08:23:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5538 states, 4423 states have (on average 1.2923355188785892) internal successors, (5716), 4557 states have internal predecessors, (5716), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:14,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5538 states to 5538 states and 7250 transitions. [2022-01-10 08:23:14,918 INFO L78 Accepts]: Start accepts. Automaton has 5538 states and 7250 transitions. Word has length 91 [2022-01-10 08:23:14,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:14,918 INFO L470 AbstractCegarLoop]: Abstraction has 5538 states and 7250 transitions. [2022-01-10 08:23:14,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:14,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5538 states and 7250 transitions. [2022-01-10 08:23:14,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:14,925 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:14,925 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] [2022-01-10 08:23:14,935 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 08:23:15,134 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 08:23:15,134 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:15,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:15,134 INFO L85 PathProgramCache]: Analyzing trace with hash 892691248, now seen corresponding path program 1 times [2022-01-10 08:23:15,134 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:15,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2096685469] [2022-01-10 08:23:15,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:15,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:15,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:15,136 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 08:23:15,137 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 08:23:15,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:15,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:15,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:15,355 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 08:23:15,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:15,355 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:15,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2096685469] [2022-01-10 08:23:15,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2096685469] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:15,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:15,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:15,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505421782] [2022-01-10 08:23:15,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:15,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:15,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:15,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:15,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:15,357 INFO L87 Difference]: Start difference. First operand 5538 states and 7250 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:15,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:15,638 INFO L93 Difference]: Finished difference Result 6330 states and 8295 transitions. [2022-01-10 08:23:15,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:15,639 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:15,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:15,654 INFO L225 Difference]: With dead ends: 6330 [2022-01-10 08:23:15,654 INFO L226 Difference]: Without dead ends: 5636 [2022-01-10 08:23:15,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 08:23:15,659 INFO L933 BasicCegarLoop]: 410 mSDtfsCounter, 127 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 1684 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 08:23:15,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 1684 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:15,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5636 states. [2022-01-10 08:23:15,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5636 to 5544. [2022-01-10 08:23:15,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5544 states, 4429 states have (on average 1.2901332129148793) internal successors, (5714), 4563 states have internal predecessors, (5714), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:15,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5544 states to 5544 states and 7248 transitions. [2022-01-10 08:23:15,978 INFO L78 Accepts]: Start accepts. Automaton has 5544 states and 7248 transitions. Word has length 91 [2022-01-10 08:23:15,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:15,979 INFO L470 AbstractCegarLoop]: Abstraction has 5544 states and 7248 transitions. [2022-01-10 08:23:15,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:15,979 INFO L276 IsEmpty]: Start isEmpty. Operand 5544 states and 7248 transitions. [2022-01-10 08:23:15,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:15,986 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:15,986 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] [2022-01-10 08:23:15,996 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 08:23:16,195 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 08:23:16,196 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:16,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:16,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1863936018, now seen corresponding path program 1 times [2022-01-10 08:23:16,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:16,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1302052249] [2022-01-10 08:23:16,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:16,197 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:16,197 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:16,198 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 08:23:16,200 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 08:23:16,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:16,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:16,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:16,413 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 08:23:16,413 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:16,413 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:16,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1302052249] [2022-01-10 08:23:16,413 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1302052249] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:16,413 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:16,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:16,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783117124] [2022-01-10 08:23:16,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:16,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:16,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:16,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:16,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:16,414 INFO L87 Difference]: Start difference. First operand 5544 states and 7248 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:16,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:16,668 INFO L93 Difference]: Finished difference Result 6314 states and 8255 transitions. [2022-01-10 08:23:16,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:16,668 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:16,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:16,686 INFO L225 Difference]: With dead ends: 6314 [2022-01-10 08:23:16,687 INFO L226 Difference]: Without dead ends: 5614 [2022-01-10 08:23:16,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 08:23:16,693 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 88 mSDsluCounter, 1253 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1661 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 08:23:16,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 1661 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:16,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5614 states. [2022-01-10 08:23:16,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5614 to 5550. [2022-01-10 08:23:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5550 states, 4435 states have (on average 1.2879368658399097) internal successors, (5712), 4569 states have internal predecessors, (5712), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:16,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5550 states to 5550 states and 7246 transitions. [2022-01-10 08:23:16,950 INFO L78 Accepts]: Start accepts. Automaton has 5550 states and 7246 transitions. Word has length 91 [2022-01-10 08:23:16,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:16,950 INFO L470 AbstractCegarLoop]: Abstraction has 5550 states and 7246 transitions. [2022-01-10 08:23:16,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:16,950 INFO L276 IsEmpty]: Start isEmpty. Operand 5550 states and 7246 transitions. [2022-01-10 08:23:16,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:16,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:16,958 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] [2022-01-10 08:23:16,967 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 08:23:17,167 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 08:23:17,167 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:17,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:17,168 INFO L85 PathProgramCache]: Analyzing trace with hash 64336684, now seen corresponding path program 1 times [2022-01-10 08:23:17,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:17,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [143402858] [2022-01-10 08:23:17,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:17,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:17,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:17,170 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 08:23:17,172 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 08:23:17,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:17,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:17,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:17,382 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 08:23:17,383 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:17,383 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:17,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [143402858] [2022-01-10 08:23:17,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [143402858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:17,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:17,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:17,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679541387] [2022-01-10 08:23:17,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:17,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:17,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:17,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:17,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:17,384 INFO L87 Difference]: Start difference. First operand 5550 states and 7246 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:17,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:17,639 INFO L93 Difference]: Finished difference Result 6298 states and 8215 transitions. [2022-01-10 08:23:17,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:17,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:17,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:17,653 INFO L225 Difference]: With dead ends: 6298 [2022-01-10 08:23:17,653 INFO L226 Difference]: Without dead ends: 5592 [2022-01-10 08:23:17,656 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 08:23:17,657 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 49 mSDsluCounter, 1238 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 1646 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 08:23:17,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 1646 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:17,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5592 states. [2022-01-10 08:23:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5592 to 5556. [2022-01-10 08:23:17,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5556 states, 4441 states have (on average 1.2857464535014635) internal successors, (5710), 4575 states have internal predecessors, (5710), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5556 states to 5556 states and 7244 transitions. [2022-01-10 08:23:17,919 INFO L78 Accepts]: Start accepts. Automaton has 5556 states and 7244 transitions. Word has length 91 [2022-01-10 08:23:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:17,919 INFO L470 AbstractCegarLoop]: Abstraction has 5556 states and 7244 transitions. [2022-01-10 08:23:17,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 5556 states and 7244 transitions. [2022-01-10 08:23:17,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:17,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:17,924 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] [2022-01-10 08:23:17,936 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 08:23:18,134 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 08:23:18,134 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:18,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:18,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1307470614, now seen corresponding path program 1 times [2022-01-10 08:23:18,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:18,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [627555181] [2022-01-10 08:23:18,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:18,135 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:18,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:18,136 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 08:23:18,141 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 08:23:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:18,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:18,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:18,336 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 08:23:18,337 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:18,337 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:18,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [627555181] [2022-01-10 08:23:18,337 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [627555181] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:18,337 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:18,337 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 08:23:18,337 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861306396] [2022-01-10 08:23:18,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:18,337 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:18,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:18,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:18,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:18,338 INFO L87 Difference]: Start difference. First operand 5556 states and 7244 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:18,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:18,537 INFO L93 Difference]: Finished difference Result 6282 states and 8175 transitions. [2022-01-10 08:23:18,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-10 08:23:18,538 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 91 [2022-01-10 08:23:18,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:18,549 INFO L225 Difference]: With dead ends: 6282 [2022-01-10 08:23:18,550 INFO L226 Difference]: Without dead ends: 5570 [2022-01-10 08:23:18,552 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 87 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 08:23:18,552 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 10 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1631 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 08:23:18,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1631 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:18,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5570 states. [2022-01-10 08:23:18,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5570 to 5562. [2022-01-10 08:23:18,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5562 states, 4447 states have (on average 1.2835619518776704) internal successors, (5708), 4581 states have internal predecessors, (5708), 560 states have call successors, (560), 366 states have call predecessors, (560), 553 states have return successors, (974), 623 states have call predecessors, (974), 556 states have call successors, (974) [2022-01-10 08:23:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5562 states to 5562 states and 7242 transitions. [2022-01-10 08:23:18,806 INFO L78 Accepts]: Start accepts. Automaton has 5562 states and 7242 transitions. Word has length 91 [2022-01-10 08:23:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:18,806 INFO L470 AbstractCegarLoop]: Abstraction has 5562 states and 7242 transitions. [2022-01-10 08:23:18,806 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 5 states have internal predecessors, (80), 2 states have call successors, (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 08:23:18,807 INFO L276 IsEmpty]: Start isEmpty. Operand 5562 states and 7242 transitions. [2022-01-10 08:23:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-01-10 08:23:18,812 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:18,812 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] [2022-01-10 08:23:18,821 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 08:23:19,021 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 08:23:19,021 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:19,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:19,022 INFO L85 PathProgramCache]: Analyzing trace with hash 743513384, now seen corresponding path program 1 times [2022-01-10 08:23:19,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:19,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1355560371] [2022-01-10 08:23:19,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:19,022 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:19,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:19,024 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 08:23:19,026 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 08:23:19,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:19,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:19,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:19,260 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 08:23:19,261 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:19,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:19,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1355560371] [2022-01-10 08:23:19,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1355560371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:19,261 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:19,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:19,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372484117] [2022-01-10 08:23:19,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:19,262 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:19,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:19,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:19,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:19,262 INFO L87 Difference]: Start difference. First operand 5562 states and 7242 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 08:23:19,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:19,565 INFO L93 Difference]: Finished difference Result 6937 states and 8949 transitions. [2022-01-10 08:23:19,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:19,566 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 91 [2022-01-10 08:23:19,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:19,581 INFO L225 Difference]: With dead ends: 6937 [2022-01-10 08:23:19,581 INFO L226 Difference]: Without dead ends: 6219 [2022-01-10 08:23:19,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 89 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 08:23:19,586 INFO L933 BasicCegarLoop]: 458 mSDtfsCounter, 301 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 683 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 08:23:19,586 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [301 Valid, 683 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:19,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2022-01-10 08:23:19,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 6217. [2022-01-10 08:23:19,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6217 states, 5038 states have (on average 1.2737197300516079) internal successors, (6417), 5175 states have internal predecessors, (6417), 595 states have call successors, (595), 394 states have call predecessors, (595), 582 states have return successors, (1010), 656 states have call predecessors, (1010), 591 states have call successors, (1010) [2022-01-10 08:23:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6217 states to 6217 states and 8022 transitions. [2022-01-10 08:23:19,931 INFO L78 Accepts]: Start accepts. Automaton has 6217 states and 8022 transitions. Word has length 91 [2022-01-10 08:23:19,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:19,931 INFO L470 AbstractCegarLoop]: Abstraction has 6217 states and 8022 transitions. [2022-01-10 08:23:19,931 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 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 08:23:19,931 INFO L276 IsEmpty]: Start isEmpty. Operand 6217 states and 8022 transitions. [2022-01-10 08:23:19,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2022-01-10 08:23:19,946 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:19,946 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 08:23:19,958 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 08:23:20,155 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 08:23:20,155 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:20,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:20,156 INFO L85 PathProgramCache]: Analyzing trace with hash -136170094, now seen corresponding path program 1 times [2022-01-10 08:23:20,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:20,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732031939] [2022-01-10 08:23:20,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:20,156 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:20,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:20,157 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 08:23:20,158 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 08:23:20,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:20,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 08:23:20,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:20,471 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 08:23:20,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:20,471 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:20,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732031939] [2022-01-10 08:23:20,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [732031939] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:20,471 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:20,471 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 08:23:20,472 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159178208] [2022-01-10 08:23:20,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:20,472 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 08:23:20,472 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:20,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 08:23:20,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 08:23:20,473 INFO L87 Difference]: Start difference. First operand 6217 states and 8022 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 08:23:20,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:20,687 INFO L93 Difference]: Finished difference Result 11063 states and 14466 transitions. [2022-01-10 08:23:20,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 08:23:20,687 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 08:23:20,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:20,703 INFO L225 Difference]: With dead ends: 11063 [2022-01-10 08:23:20,704 INFO L226 Difference]: Without dead ends: 6283 [2022-01-10 08:23:20,716 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 08:23:20,717 INFO L933 BasicCegarLoop]: 411 mSDtfsCounter, 37 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 2046 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 08:23:20,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 2046 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:20,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6283 states. [2022-01-10 08:23:21,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6283 to 5737. [2022-01-10 08:23:21,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5737 states, 4726 states have (on average 1.2634363097757089) internal successors, (5971), 4802 states have internal predecessors, (5971), 499 states have call successors, (499), 343 states have call predecessors, (499), 510 states have return successors, (867), 600 states have call predecessors, (867), 495 states have call successors, (867) [2022-01-10 08:23:21,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5737 states to 5737 states and 7337 transitions. [2022-01-10 08:23:21,041 INFO L78 Accepts]: Start accepts. Automaton has 5737 states and 7337 transitions. Word has length 155 [2022-01-10 08:23:21,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:21,041 INFO L470 AbstractCegarLoop]: Abstraction has 5737 states and 7337 transitions. [2022-01-10 08:23:21,041 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 08:23:21,041 INFO L276 IsEmpty]: Start isEmpty. Operand 5737 states and 7337 transitions. [2022-01-10 08:23:21,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 08:23:21,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:21,056 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 08:23:21,067 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 08:23:21,265 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 08:23:21,265 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:21,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:21,265 INFO L85 PathProgramCache]: Analyzing trace with hash -87450949, now seen corresponding path program 1 times [2022-01-10 08:23:21,266 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:21,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911109551] [2022-01-10 08:23:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:21,266 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:21,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:21,267 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 08:23:21,267 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 08:23:21,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:21,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:21,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:21,563 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 08:23:21,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:21,563 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:21,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911109551] [2022-01-10 08:23:21,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911109551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:21,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:21,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:21,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694506102] [2022-01-10 08:23:21,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:21,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:21,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:21,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:21,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:21,565 INFO L87 Difference]: Start difference. First operand 5737 states and 7337 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 08:23:21,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:21,703 INFO L93 Difference]: Finished difference Result 8299 states and 10655 transitions. [2022-01-10 08:23:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:21,704 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 08:23:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:21,711 INFO L225 Difference]: With dead ends: 8299 [2022-01-10 08:23:21,711 INFO L226 Difference]: Without dead ends: 4043 [2022-01-10 08:23:21,720 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 08:23:21,720 INFO L933 BasicCegarLoop]: 409 mSDtfsCounter, 148 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 663 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 08:23:21,722 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 663 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:21,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4043 states. [2022-01-10 08:23:21,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4043 to 4043. [2022-01-10 08:23:21,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4043 states, 3374 states have (on average 1.2596324836988737) internal successors, (4250), 3424 states have internal predecessors, (4250), 323 states have call successors, (323), 231 states have call predecessors, (323), 344 states have return successors, (547), 388 states have call predecessors, (547), 319 states have call successors, (547) [2022-01-10 08:23:21,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4043 states to 4043 states and 5120 transitions. [2022-01-10 08:23:21,930 INFO L78 Accepts]: Start accepts. Automaton has 4043 states and 5120 transitions. Word has length 156 [2022-01-10 08:23:21,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:21,931 INFO L470 AbstractCegarLoop]: Abstraction has 4043 states and 5120 transitions. [2022-01-10 08:23:21,931 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 08:23:21,931 INFO L276 IsEmpty]: Start isEmpty. Operand 4043 states and 5120 transitions. [2022-01-10 08:23:21,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 08:23:21,939 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:21,939 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:21,950 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 08:23:22,148 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 08:23:22,149 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:22,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:22,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1088285186, now seen corresponding path program 1 times [2022-01-10 08:23:22,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:22,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1046267647] [2022-01-10 08:23:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:22,150 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:22,151 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 08:23:22,154 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 08:23:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:22,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:22,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:22,488 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-01-10 08:23:22,488 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:22,488 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:22,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1046267647] [2022-01-10 08:23:22,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1046267647] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:22,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:22,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-10 08:23:22,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711079558] [2022-01-10 08:23:22,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:22,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:22,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:22,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:22,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:22,489 INFO L87 Difference]: Start difference. First operand 4043 states and 5120 transitions. Second operand has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 08:23:22,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:22,690 INFO L93 Difference]: Finished difference Result 6564 states and 8229 transitions. [2022-01-10 08:23:22,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:22,691 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 147 [2022-01-10 08:23:22,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:22,703 INFO L225 Difference]: With dead ends: 6564 [2022-01-10 08:23:22,703 INFO L226 Difference]: Without dead ends: 5191 [2022-01-10 08:23:22,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:22,709 INFO L933 BasicCegarLoop]: 456 mSDtfsCounter, 304 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 681 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 08:23:22,709 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 681 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:22,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5191 states. [2022-01-10 08:23:22,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5191 to 5179. [2022-01-10 08:23:22,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5179 states, 4398 states have (on average 1.2492041837198726) internal successors, (5494), 4452 states have internal predecessors, (5494), 385 states have call successors, (385), 279 states have call predecessors, (385), 394 states have return successors, (611), 448 states have call predecessors, (611), 381 states have call successors, (611) [2022-01-10 08:23:22,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5179 states to 5179 states and 6490 transitions. [2022-01-10 08:23:22,989 INFO L78 Accepts]: Start accepts. Automaton has 5179 states and 6490 transitions. Word has length 147 [2022-01-10 08:23:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:22,989 INFO L470 AbstractCegarLoop]: Abstraction has 5179 states and 6490 transitions. [2022-01-10 08:23:22,989 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.0) internal successors, (123), 2 states have internal predecessors, (123), 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 08:23:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 5179 states and 6490 transitions. [2022-01-10 08:23:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 08:23:22,998 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:22,999 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:23,013 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 08:23:23,209 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 08:23:23,209 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:23,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:23,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1273404481, now seen corresponding path program 1 times [2022-01-10 08:23:23,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:23,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1530959627] [2022-01-10 08:23:23,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:23,210 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:23,210 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:23,211 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 08:23:23,212 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 08:23:23,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:23,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:23,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:23,541 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:23:23,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:23,541 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:23,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1530959627] [2022-01-10 08:23:23,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1530959627] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:23,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:23,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:23,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292572814] [2022-01-10 08:23:23,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:23,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:23,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:23,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:23,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:23,543 INFO L87 Difference]: Start difference. First operand 5179 states and 6490 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (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 08:23:24,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:24,038 INFO L93 Difference]: Finished difference Result 10058 states and 12422 transitions. [2022-01-10 08:23:24,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:24,039 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (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 147 [2022-01-10 08:23:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:24,060 INFO L225 Difference]: With dead ends: 10058 [2022-01-10 08:23:24,060 INFO L226 Difference]: Without dead ends: 7550 [2022-01-10 08:23:24,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:24,069 INFO L933 BasicCegarLoop]: 500 mSDtfsCounter, 491 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 509 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:24,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [509 Valid, 968 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:24,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7550 states. [2022-01-10 08:23:24,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7550 to 7546. [2022-01-10 08:23:24,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7546 states, 6530 states have (on average 1.2336906584992342) internal successors, (8056), 6597 states have internal predecessors, (8056), 512 states have call successors, (512), 375 states have call predecessors, (512), 502 states have return successors, (774), 575 states have call predecessors, (774), 508 states have call successors, (774) [2022-01-10 08:23:24,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7546 states to 7546 states and 9342 transitions. [2022-01-10 08:23:24,499 INFO L78 Accepts]: Start accepts. Automaton has 7546 states and 9342 transitions. Word has length 147 [2022-01-10 08:23:24,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:24,500 INFO L470 AbstractCegarLoop]: Abstraction has 7546 states and 9342 transitions. [2022-01-10 08:23:24,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 4 states have call successors, (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 08:23:24,500 INFO L276 IsEmpty]: Start isEmpty. Operand 7546 states and 9342 transitions. [2022-01-10 08:23:24,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 08:23:24,507 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:24,507 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:24,517 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (29)] Ended with exit code 0 [2022-01-10 08:23:24,716 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 08:23:24,717 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:24,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:24,717 INFO L85 PathProgramCache]: Analyzing trace with hash -862478721, now seen corresponding path program 1 times [2022-01-10 08:23:24,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:24,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [677693588] [2022-01-10 08:23:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:24,718 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:24,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:24,719 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 08:23:24,720 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 08:23:24,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:24,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:24,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:24,995 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:23:24,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:24,995 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:24,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [677693588] [2022-01-10 08:23:24,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [677693588] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:24,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:24,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:24,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407565658] [2022-01-10 08:23:24,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:24,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:24,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:24,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:24,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:24,997 INFO L87 Difference]: Start difference. First operand 7546 states and 9342 transitions. Second operand has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 08:23:25,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:25,294 INFO L93 Difference]: Finished difference Result 11286 states and 13849 transitions. [2022-01-10 08:23:25,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:25,294 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 147 [2022-01-10 08:23:25,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:25,306 INFO L225 Difference]: With dead ends: 11286 [2022-01-10 08:23:25,307 INFO L226 Difference]: Without dead ends: 6411 [2022-01-10 08:23:25,313 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:25,314 INFO L933 BasicCegarLoop]: 408 mSDtfsCounter, 245 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 564 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 08:23:25,314 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 564 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:25,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6411 states. [2022-01-10 08:23:25,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6411 to 6411. [2022-01-10 08:23:25,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6411 states, 5510 states have (on average 1.2372050816696916) internal successors, (6817), 5572 states have internal predecessors, (6817), 447 states have call successors, (447), 327 states have call predecessors, (447), 452 states have return successors, (695), 512 states have call predecessors, (695), 443 states have call successors, (695) [2022-01-10 08:23:25,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6411 states to 6411 states and 7959 transitions. [2022-01-10 08:23:25,598 INFO L78 Accepts]: Start accepts. Automaton has 6411 states and 7959 transitions. Word has length 147 [2022-01-10 08:23:25,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:25,599 INFO L470 AbstractCegarLoop]: Abstraction has 6411 states and 7959 transitions. [2022-01-10 08:23:25,599 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.0) internal successors, (90), 3 states have internal predecessors, (90), 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 08:23:25,599 INFO L276 IsEmpty]: Start isEmpty. Operand 6411 states and 7959 transitions. [2022-01-10 08:23:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 08:23:25,606 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:25,606 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:25,614 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (30)] Ended with exit code 0 [2022-01-10 08:23:25,807 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 08:23:25,807 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:25,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:25,808 INFO L85 PathProgramCache]: Analyzing trace with hash 1364728948, now seen corresponding path program 1 times [2022-01-10 08:23:25,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:25,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518007683] [2022-01-10 08:23:25,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:25,808 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:25,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:25,809 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 08:23:25,811 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 08:23:25,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:25,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:25,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:26,129 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:23:26,129 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:26,130 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:26,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518007683] [2022-01-10 08:23:26,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518007683] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:26,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:26,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:26,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547046991] [2022-01-10 08:23:26,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:26,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:26,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:26,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:26,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:26,131 INFO L87 Difference]: Start difference. First operand 6411 states and 7959 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (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 08:23:26,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:26,771 INFO L93 Difference]: Finished difference Result 13329 states and 16317 transitions. [2022-01-10 08:23:26,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:26,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (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 148 [2022-01-10 08:23:26,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:26,792 INFO L225 Difference]: With dead ends: 13329 [2022-01-10 08:23:26,793 INFO L226 Difference]: Without dead ends: 9589 [2022-01-10 08:23:26,800 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:26,800 INFO L933 BasicCegarLoop]: 493 mSDtfsCounter, 482 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 500 SdHoareTripleChecker+Valid, 943 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:26,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [500 Valid, 943 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:26,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9589 states. [2022-01-10 08:23:27,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9589 to 9585. [2022-01-10 08:23:27,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9585 states, 8361 states have (on average 1.2253318980983137) internal successors, (10245), 8444 states have internal predecessors, (10245), 620 states have call successors, (620), 455 states have call predecessors, (620), 602 states have return successors, (914), 687 states have call predecessors, (914), 616 states have call successors, (914) [2022-01-10 08:23:27,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9585 states to 9585 states and 11779 transitions. [2022-01-10 08:23:27,267 INFO L78 Accepts]: Start accepts. Automaton has 9585 states and 11779 transitions. Word has length 148 [2022-01-10 08:23:27,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:27,267 INFO L470 AbstractCegarLoop]: Abstraction has 9585 states and 11779 transitions. [2022-01-10 08:23:27,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 4 states have call successors, (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 08:23:27,268 INFO L276 IsEmpty]: Start isEmpty. Operand 9585 states and 11779 transitions. [2022-01-10 08:23:27,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-01-10 08:23:27,273 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:27,273 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:27,281 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (31)] Ended with exit code 0 [2022-01-10 08:23:27,474 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 08:23:27,474 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:27,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:27,474 INFO L85 PathProgramCache]: Analyzing trace with hash -771154254, now seen corresponding path program 1 times [2022-01-10 08:23:27,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:27,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420057899] [2022-01-10 08:23:27,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:27,475 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:27,475 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:27,476 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 08:23:27,477 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 08:23:27,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:27,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 308 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:27,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:23:27,724 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:27,724 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:27,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420057899] [2022-01-10 08:23:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420057899] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:27,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406386274] [2022-01-10 08:23:27,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:27,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:27,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:27,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:27,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:27,726 INFO L87 Difference]: Start difference. First operand 9585 states and 11779 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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 08:23:28,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:28,142 INFO L93 Difference]: Finished difference Result 16493 states and 20096 transitions. [2022-01-10 08:23:28,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:28,143 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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 148 [2022-01-10 08:23:28,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:28,164 INFO L225 Difference]: With dead ends: 16493 [2022-01-10 08:23:28,164 INFO L226 Difference]: Without dead ends: 9579 [2022-01-10 08:23:28,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:28,177 INFO L933 BasicCegarLoop]: 407 mSDtfsCounter, 243 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 243 SdHoareTripleChecker+Valid, 563 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 08:23:28,177 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [243 Valid, 563 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:28,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9579 states. [2022-01-10 08:23:28,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9579 to 9579. [2022-01-10 08:23:28,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9579 states, 8358 states have (on average 1.2251734864800192) internal successors, (10240), 8440 states have internal predecessors, (10240), 617 states have call successors, (617), 455 states have call predecessors, (617), 602 states have return successors, (911), 684 states have call predecessors, (911), 613 states have call successors, (911) [2022-01-10 08:23:28,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9579 states to 9579 states and 11768 transitions. [2022-01-10 08:23:28,661 INFO L78 Accepts]: Start accepts. Automaton has 9579 states and 11768 transitions. Word has length 148 [2022-01-10 08:23:28,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:28,661 INFO L470 AbstractCegarLoop]: Abstraction has 9579 states and 11768 transitions. [2022-01-10 08:23:28,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (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 08:23:28,661 INFO L276 IsEmpty]: Start isEmpty. Operand 9579 states and 11768 transitions. [2022-01-10 08:23:28,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 08:23:28,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:28,667 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:28,676 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 08:23:28,867 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 08:23:28,868 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:28,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:28,868 INFO L85 PathProgramCache]: Analyzing trace with hash -986133731, now seen corresponding path program 1 times [2022-01-10 08:23:28,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:28,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [982878012] [2022-01-10 08:23:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:28,868 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:28,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:28,869 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 08:23:28,870 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 08:23:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:28,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:28,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:29,192 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:23:29,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:29,193 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:29,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [982878012] [2022-01-10 08:23:29,193 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [982878012] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:29,193 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:29,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:29,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829116667] [2022-01-10 08:23:29,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:29,194 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:29,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:29,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:29,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:29,194 INFO L87 Difference]: Start difference. First operand 9579 states and 11768 transitions. Second operand has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (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 08:23:30,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:30,137 INFO L93 Difference]: Finished difference Result 22264 states and 27062 transitions. [2022-01-10 08:23:30,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:30,137 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (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 149 [2022-01-10 08:23:30,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:30,163 INFO L225 Difference]: With dead ends: 22264 [2022-01-10 08:23:30,164 INFO L226 Difference]: Without dead ends: 15356 [2022-01-10 08:23:30,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:30,174 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 481 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 900 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:30,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [499 Valid, 900 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:30,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15356 states. [2022-01-10 08:23:30,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15356 to 15352. [2022-01-10 08:23:30,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15352 states, 13520 states have (on average 1.2150887573964497) internal successors, (16428), 13651 states have internal predecessors, (16428), 936 states have call successors, (936), 687 states have call predecessors, (936), 894 states have return successors, (1338), 1015 states have call predecessors, (1338), 932 states have call successors, (1338) [2022-01-10 08:23:30,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15352 states to 15352 states and 18702 transitions. [2022-01-10 08:23:30,984 INFO L78 Accepts]: Start accepts. Automaton has 15352 states and 18702 transitions. Word has length 149 [2022-01-10 08:23:30,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:30,984 INFO L470 AbstractCegarLoop]: Abstraction has 15352 states and 18702 transitions. [2022-01-10 08:23:30,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 4 states have internal predecessors, (101), 4 states have call successors, (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 08:23:30,985 INFO L276 IsEmpty]: Start isEmpty. Operand 15352 states and 18702 transitions. [2022-01-10 08:23:30,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-01-10 08:23:30,992 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:30,993 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:31,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (33)] Ended with exit code 0 [2022-01-10 08:23:31,193 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 08:23:31,193 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:31,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1172950363, now seen corresponding path program 1 times [2022-01-10 08:23:31,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:31,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1855091666] [2022-01-10 08:23:31,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:31,194 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:31,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:31,195 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 08:23:31,196 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 08:23:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:31,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 310 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:31,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:31,450 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-01-10 08:23:31,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:31,450 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:31,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1855091666] [2022-01-10 08:23:31,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1855091666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:31,450 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:31,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:31,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718385690] [2022-01-10 08:23:31,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:31,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:31,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:31,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:31,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:31,451 INFO L87 Difference]: Start difference. First operand 15352 states and 18702 transitions. Second operand has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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 08:23:32,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:32,195 INFO L93 Difference]: Finished difference Result 28028 states and 33945 transitions. [2022-01-10 08:23:32,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:32,195 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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 149 [2022-01-10 08:23:32,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:32,233 INFO L225 Difference]: With dead ends: 28028 [2022-01-10 08:23:32,233 INFO L226 Difference]: Without dead ends: 15347 [2022-01-10 08:23:32,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 147 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:32,248 INFO L933 BasicCegarLoop]: 406 mSDtfsCounter, 241 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 562 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 08:23:32,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 562 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:32,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15347 states. [2022-01-10 08:23:32,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15347 to 15347. [2022-01-10 08:23:33,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15347 states, 13518 states have (on average 1.215046604527297) internal successors, (16425), 13648 states have internal predecessors, (16425), 933 states have call successors, (933), 687 states have call predecessors, (933), 894 states have return successors, (1335), 1012 states have call predecessors, (1335), 929 states have call successors, (1335) [2022-01-10 08:23:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15347 states to 15347 states and 18693 transitions. [2022-01-10 08:23:33,036 INFO L78 Accepts]: Start accepts. Automaton has 15347 states and 18693 transitions. Word has length 149 [2022-01-10 08:23:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:33,036 INFO L470 AbstractCegarLoop]: Abstraction has 15347 states and 18693 transitions. [2022-01-10 08:23:33,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.666666666666668) internal successors, (92), 3 states have internal predecessors, (92), 2 states have call successors, (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 08:23:33,036 INFO L276 IsEmpty]: Start isEmpty. Operand 15347 states and 18693 transitions. [2022-01-10 08:23:33,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 08:23:33,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:33,045 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 08:23:33,052 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 08:23:33,246 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 08:23:33,246 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:33,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:33,246 INFO L85 PathProgramCache]: Analyzing trace with hash 2066506957, now seen corresponding path program 1 times [2022-01-10 08:23:33,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:33,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1474696716] [2022-01-10 08:23:33,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:33,247 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:33,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:33,248 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 08:23:33,249 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 08:23:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:33,550 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 08:23:33,550 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:33,550 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:33,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1474696716] [2022-01-10 08:23:33,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1474696716] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:33,551 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:33,551 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:33,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551050010] [2022-01-10 08:23:33,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:33,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:33,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:33,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:33,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:33,552 INFO L87 Difference]: Start difference. First operand 15347 states and 18693 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 08:23:34,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:34,413 INFO L93 Difference]: Finished difference Result 19469 states and 24176 transitions. [2022-01-10 08:23:34,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:34,414 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 08:23:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:34,447 INFO L225 Difference]: With dead ends: 19469 [2022-01-10 08:23:34,447 INFO L226 Difference]: Without dead ends: 17131 [2022-01-10 08:23:34,454 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 08:23:34,454 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 68 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 819 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 08:23:34,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 819 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:34,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17131 states. [2022-01-10 08:23:35,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17131 to 17103. [2022-01-10 08:23:35,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17103 states, 14936 states have (on average 1.22214783074451) internal successors, (18254), 15102 states have internal predecessors, (18254), 1089 states have call successors, (1089), 795 states have call predecessors, (1089), 1076 states have return successors, (1644), 1206 states have call predecessors, (1644), 1085 states have call successors, (1644) [2022-01-10 08:23:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17103 states to 17103 states and 20987 transitions. [2022-01-10 08:23:35,379 INFO L78 Accepts]: Start accepts. Automaton has 17103 states and 20987 transitions. Word has length 159 [2022-01-10 08:23:35,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:35,380 INFO L470 AbstractCegarLoop]: Abstraction has 17103 states and 20987 transitions. [2022-01-10 08:23:35,380 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 08:23:35,380 INFO L276 IsEmpty]: Start isEmpty. Operand 17103 states and 20987 transitions. [2022-01-10 08:23:35,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-01-10 08:23:35,390 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:35,390 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:35,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (35)] Ended with exit code 0 [2022-01-10 08:23:35,593 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 08:23:35,593 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:35,594 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:35,594 INFO L85 PathProgramCache]: Analyzing trace with hash -2123970152, now seen corresponding path program 1 times [2022-01-10 08:23:35,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:35,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [608262326] [2022-01-10 08:23:35,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:35,594 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:35,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:35,595 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 08:23:35,596 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 08:23:35,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:35,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 8 conjunts are in the unsatisfiable core [2022-01-10 08:23:35,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:35,932 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:23:35,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:35,932 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:35,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [608262326] [2022-01-10 08:23:35,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [608262326] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:35,933 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:35,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:35,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369845353] [2022-01-10 08:23:35,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:35,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-10 08:23:35,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:35,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-10 08:23:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-10 08:23:35,934 INFO L87 Difference]: Start difference. First operand 17103 states and 20987 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (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 08:23:37,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:37,581 INFO L93 Difference]: Finished difference Result 41975 states and 50825 transitions. [2022-01-10 08:23:37,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-10 08:23:37,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (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 150 [2022-01-10 08:23:37,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:37,652 INFO L225 Difference]: With dead ends: 41975 [2022-01-10 08:23:37,652 INFO L226 Difference]: Without dead ends: 29299 [2022-01-10 08:23:37,678 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 148 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 08:23:37,679 INFO L933 BasicCegarLoop]: 390 mSDtfsCounter, 490 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 08:23:37,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 743 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 08:23:37,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29299 states. [2022-01-10 08:23:39,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29299 to 29295. [2022-01-10 08:23:39,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29295 states, 25936 states have (on average 1.2096699568167797) internal successors, (31374), 26210 states have internal predecessors, (31374), 1673 states have call successors, (1673), 1259 states have call predecessors, (1673), 1684 states have return successors, (2468), 1826 states have call predecessors, (2468), 1669 states have call successors, (2468) [2022-01-10 08:23:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29295 states to 29295 states and 35515 transitions. [2022-01-10 08:23:39,197 INFO L78 Accepts]: Start accepts. Automaton has 29295 states and 35515 transitions. Word has length 150 [2022-01-10 08:23:39,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:39,199 INFO L470 AbstractCegarLoop]: Abstraction has 29295 states and 35515 transitions. [2022-01-10 08:23:39,199 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 4 states have call successors, (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 08:23:39,199 INFO L276 IsEmpty]: Start isEmpty. Operand 29295 states and 35515 transitions. [2022-01-10 08:23:39,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2022-01-10 08:23:39,215 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:39,216 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 08:23:39,229 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:39,425 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 08:23:39,425 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:39,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:39,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1663349157, now seen corresponding path program 1 times [2022-01-10 08:23:39,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:39,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967033008] [2022-01-10 08:23:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:39,426 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:39,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:39,427 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 08:23:39,427 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 08:23:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:39,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:39,730 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 08:23:39,730 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:39,730 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:39,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967033008] [2022-01-10 08:23:39,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967033008] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:39,730 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:39,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:39,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034351826] [2022-01-10 08:23:39,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:39,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:39,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:39,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:39,732 INFO L87 Difference]: Start difference. First operand 29295 states and 35515 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 08:23:41,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:41,307 INFO L93 Difference]: Finished difference Result 37027 states and 46072 transitions. [2022-01-10 08:23:41,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:41,307 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 08:23:41,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:41,371 INFO L225 Difference]: With dead ends: 37027 [2022-01-10 08:23:41,371 INFO L226 Difference]: Without dead ends: 32933 [2022-01-10 08:23:41,390 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 08:23:41,391 INFO L933 BasicCegarLoop]: 478 mSDtfsCounter, 102 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 868 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 08:23:41,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 868 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:41,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32933 states. [2022-01-10 08:23:43,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32933 to 32857. [2022-01-10 08:23:43,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32857 states, 28798 states have (on average 1.2133481491770262) internal successors, (34942), 29122 states have internal predecessors, (34942), 2009 states have call successors, (2009), 1493 states have call predecessors, (2009), 2048 states have return successors, (3266), 2242 states have call predecessors, (3266), 2005 states have call successors, (3266) [2022-01-10 08:23:43,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32857 states to 32857 states and 40217 transitions. [2022-01-10 08:23:43,392 INFO L78 Accepts]: Start accepts. Automaton has 32857 states and 40217 transitions. Word has length 160 [2022-01-10 08:23:43,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:43,392 INFO L470 AbstractCegarLoop]: Abstraction has 32857 states and 40217 transitions. [2022-01-10 08:23:43,392 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 08:23:43,392 INFO L276 IsEmpty]: Start isEmpty. Operand 32857 states and 40217 transitions. [2022-01-10 08:23:43,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-01-10 08:23:43,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:43,408 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 08:23:43,415 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 08:23:43,608 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 08:23:43,609 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:43,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:43,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1078112761, now seen corresponding path program 1 times [2022-01-10 08:23:43,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:43,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311488543] [2022-01-10 08:23:43,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:43,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:43,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:43,610 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 08:23:43,611 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 08:23:43,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:43,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:43,695 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:43,864 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-01-10 08:23:43,864 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:43,864 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:43,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311488543] [2022-01-10 08:23:43,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311488543] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:43,864 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:43,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:43,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1615882965] [2022-01-10 08:23:43,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:43,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:43,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:43,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:43,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:43,866 INFO L87 Difference]: Start difference. First operand 32857 states and 40217 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 08:23:46,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:46,482 INFO L93 Difference]: Finished difference Result 76789 states and 93359 transitions. [2022-01-10 08:23:46,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:46,483 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 151 [2022-01-10 08:23:46,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:46,581 INFO L225 Difference]: With dead ends: 76789 [2022-01-10 08:23:46,581 INFO L226 Difference]: Without dead ends: 42609 [2022-01-10 08:23:46,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 149 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 08:23:46,627 INFO L933 BasicCegarLoop]: 610 mSDtfsCounter, 200 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 1013 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 08:23:46,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 1013 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:46,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42609 states. [2022-01-10 08:23:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42609 to 42609. [2022-01-10 08:23:48,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42609 states, 37534 states have (on average 1.2086907870197687) internal successors, (45367), 37914 states have internal predecessors, (45367), 2545 states have call successors, (2545), 1885 states have call predecessors, (2545), 2528 states have return successors, (4292), 2810 states have call predecessors, (4292), 2541 states have call successors, (4292) [2022-01-10 08:23:49,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42609 states to 42609 states and 52204 transitions. [2022-01-10 08:23:49,027 INFO L78 Accepts]: Start accepts. Automaton has 42609 states and 52204 transitions. Word has length 151 [2022-01-10 08:23:49,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:49,027 INFO L470 AbstractCegarLoop]: Abstraction has 42609 states and 52204 transitions. [2022-01-10 08:23:49,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 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 08:23:49,027 INFO L276 IsEmpty]: Start isEmpty. Operand 42609 states and 52204 transitions. [2022-01-10 08:23:49,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-01-10 08:23:49,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:49,041 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 08:23:49,049 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-01-10 08:23:49,242 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 08:23:49,243 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:49,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:49,243 INFO L85 PathProgramCache]: Analyzing trace with hash 759825163, now seen corresponding path program 1 times [2022-01-10 08:23:49,243 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:49,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1779715201] [2022-01-10 08:23:49,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:49,244 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:49,244 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:49,245 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 08:23:49,245 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 08:23:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:49,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 2 conjunts are in the unsatisfiable core [2022-01-10 08:23:49,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:49,561 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 08:23:49,561 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:49,561 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:49,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1779715201] [2022-01-10 08:23:49,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1779715201] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:49,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:49,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-10 08:23:49,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919902881] [2022-01-10 08:23:49,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:49,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-10 08:23:49,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:49,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-10 08:23:49,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-10 08:23:49,563 INFO L87 Difference]: Start difference. First operand 42609 states and 52204 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 08:23:51,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 08:23:51,906 INFO L93 Difference]: Finished difference Result 57779 states and 72419 transitions. [2022-01-10 08:23:51,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-10 08:23:51,907 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 08:23:51,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 08:23:52,052 INFO L225 Difference]: With dead ends: 57779 [2022-01-10 08:23:52,053 INFO L226 Difference]: Without dead ends: 50123 [2022-01-10 08:23:52,084 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 08:23:52,085 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 72 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 822 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 08:23:52,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 822 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 08:23:52,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50123 states. [2022-01-10 08:23:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50123 to 50119. [2022-01-10 08:23:54,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50119 states, 43567 states have (on average 1.2141529139027245) internal successors, (52897), 44076 states have internal predecessors, (52897), 3253 states have call successors, (3253), 2371 states have call predecessors, (3253), 3297 states have return successors, (5766), 3672 states have call predecessors, (5766), 3249 states have call successors, (5766) [2022-01-10 08:23:54,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50119 states to 50119 states and 61916 transitions. [2022-01-10 08:23:54,790 INFO L78 Accepts]: Start accepts. Automaton has 50119 states and 61916 transitions. Word has length 161 [2022-01-10 08:23:54,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 08:23:54,791 INFO L470 AbstractCegarLoop]: Abstraction has 50119 states and 61916 transitions. [2022-01-10 08:23:54,791 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 08:23:54,791 INFO L276 IsEmpty]: Start isEmpty. Operand 50119 states and 61916 transitions. [2022-01-10 08:23:54,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2022-01-10 08:23:54,811 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 08:23:54,811 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:23:54,818 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (39)] Ended with exit code 0 [2022-01-10 08:23:55,012 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 08:23:55,013 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 08:23:55,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 08:23:55,013 INFO L85 PathProgramCache]: Analyzing trace with hash 314160217, now seen corresponding path program 1 times [2022-01-10 08:23:55,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-01-10 08:23:55,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [365670198] [2022-01-10 08:23:55,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 08:23:55,014 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-01-10 08:23:55,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-01-10 08:23:55,015 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 08:23:55,016 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 08:23:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 08:23:55,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2022-01-10 08:23:55,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 08:23:55,307 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-01-10 08:23:55,308 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 08:23:55,308 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-01-10 08:23:55,308 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [365670198] [2022-01-10 08:23:55,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [365670198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 08:23:55,308 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 08:23:55,308 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-10 08:23:55,308 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198536858] [2022-01-10 08:23:55,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 08:23:55,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 08:23:55,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-01-10 08:23:55,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 08:23:55,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 08:23:55,309 INFO L87 Difference]: Start difference. First operand 50119 states and 61916 transitions. Second operand has 5 states, 5 states have (on average 17.6) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13)