/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_Default.epf -i ../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-a10ec3b [2022-01-10 02:34:42,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-10 02:34:42,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-10 02:34:42,963 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-10 02:34:42,970 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-10 02:34:42,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-10 02:34:42,972 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-10 02:34:42,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-10 02:34:42,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-10 02:34:42,974 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-10 02:34:42,976 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-10 02:34:42,978 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-10 02:34:42,982 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-10 02:34:42,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-10 02:34:43,022 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-10 02:34:43,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-10 02:34:43,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-10 02:34:43,034 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-10 02:34:43,035 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-10 02:34:43,036 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-10 02:34:43,039 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/BvToInt/svcomp-Reach-64bit-Automizer_Default.epf [2022-01-10 02:34:43,057 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-10 02:34:43,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-10 02:34:43,057 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-10 02:34:43,057 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-10 02:34:43,058 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-10 02:34:43,058 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-10 02:34:43,059 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * Use SBE=true [2022-01-10 02:34:43,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-10 02:34:43,059 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-10 02:34:43,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-10 02:34:43,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:34:43,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-01-10 02:34:43,061 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-10 02:34:43,062 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-10 02:34:43,226 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-10 02:34:43,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-10 02:34:43,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-10 02:34:43,252 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-10 02:34:43,253 INFO L275 PluginConnector]: CDTParser initialized [2022-01-10 02:34:43,254 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-01-10 02:34:43,297 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffdc74fd/05b299e76b42496688bf3141d897e9df/FLAG5218d2442 [2022-01-10 02:34:43,671 INFO L306 CDTParser]: Found 1 translation units. [2022-01-10 02:34:43,671 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-01-10 02:34:43,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffdc74fd/05b299e76b42496688bf3141d897e9df/FLAG5218d2442 [2022-01-10 02:34:44,045 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ffdc74fd/05b299e76b42496688bf3141d897e9df [2022-01-10 02:34:44,047 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-10 02:34:44,048 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-10 02:34:44,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-10 02:34:44,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-10 02:34:44,056 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-10 02:34:44,057 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@798a2a2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44, skipping insertion in model container [2022-01-10 02:34:44,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,063 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-10 02:34:44,095 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-10 02:34:44,218 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2022-01-10 02:34:44,321 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2022-01-10 02:34:44,410 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:34:44,421 INFO L203 MainTranslator]: Completed pre-run [2022-01-10 02:34:44,432 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[914,927] [2022-01-10 02:34:44,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/combinations/pc_sfifo_2.cil-1+token_ring.10.cil-2.c[7115,7128] [2022-01-10 02:34:44,488 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-10 02:34:44,506 INFO L208 MainTranslator]: Completed translation [2022-01-10 02:34:44,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44 WrapperNode [2022-01-10 02:34:44,507 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-10 02:34:44,508 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-10 02:34:44,508 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-10 02:34:44,508 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-10 02:34:44,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,578 INFO L137 Inliner]: procedures = 73, calls = 87, calls flagged for inlining = 42, calls inlined = 42, statements flattened = 924 [2022-01-10 02:34:44,579 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-10 02:34:44,579 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-10 02:34:44,580 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-10 02:34:44,580 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-10 02:34:44,591 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,598 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,598 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-10 02:34:44,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-10 02:34:44,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-10 02:34:44,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-10 02:34:44,641 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (1/1) ... [2022-01-10 02:34:44,646 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-10 02:34:44,659 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:44,669 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 02:34:44,682 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 02:34:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-10 02:34:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-01-10 02:34:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-01-10 02:34:44,702 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-01-10 02:34:44,702 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-01-10 02:34:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-01-10 02:34:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-01-10 02:34:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-01-10 02:34:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-01-10 02:34:44,703 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-01-10 02:34:44,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-01-10 02:34:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-01-10 02:34:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-01-10 02:34:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-01-10 02:34:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-01-10 02:34:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-01-10 02:34:44,704 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-01-10 02:34:44,704 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-01-10 02:34:44,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-10 02:34:44,705 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-10 02:34:44,706 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-01-10 02:34:44,706 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-01-10 02:34:44,838 INFO L234 CfgBuilder]: Building ICFG [2022-01-10 02:34:44,839 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-10 02:34:45,425 INFO L275 CfgBuilder]: Performing block encoding [2022-01-10 02:34:45,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-10 02:34:45,433 INFO L299 CfgBuilder]: Removed 17 assume(true) statements. [2022-01-10 02:34:45,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:34:45 BoogieIcfgContainer [2022-01-10 02:34:45,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-10 02:34:45,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-10 02:34:45,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-10 02:34:45,446 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-10 02:34:45,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.01 02:34:44" (1/3) ... [2022-01-10 02:34:45,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d9e88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:34:45, skipping insertion in model container [2022-01-10 02:34:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.01 02:34:44" (2/3) ... [2022-01-10 02:34:45,447 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d9e88d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.01 02:34:45, skipping insertion in model container [2022-01-10 02:34:45,447 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.01 02:34:45" (3/3) ... [2022-01-10 02:34:45,448 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.10.cil-2.c [2022-01-10 02:34:45,451 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-10 02:34:45,451 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-01-10 02:34:45,483 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-10 02:34:45,488 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 02:34:45,488 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-01-10 02:34:45,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 433 states, 378 states have (on average 1.6322751322751323) internal successors, (617), 384 states have internal predecessors, (617), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) [2022-01-10 02:34:45,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:45,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:45,529 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 02:34:45,529 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:45,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:45,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1844920847, now seen corresponding path program 1 times [2022-01-10 02:34:45,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:45,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219266180] [2022-01-10 02:34:45,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:45,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:45,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:45,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:45,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:45,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:45,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:45,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:45,858 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 02:34:45,858 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:45,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219266180] [2022-01-10 02:34:45,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219266180] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:45,859 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:45,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:45,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468437304] [2022-01-10 02:34:45,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:45,863 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:45,864 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:45,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:45,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:45,884 INFO L87 Difference]: Start difference. First operand has 433 states, 378 states have (on average 1.6322751322751323) internal successors, (617), 384 states have internal predecessors, (617), 38 states have call successors, (38), 14 states have call predecessors, (38), 14 states have return successors, (38), 37 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:46,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:46,729 INFO L93 Difference]: Finished difference Result 975 states and 1548 transitions. [2022-01-10 02:34:46,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:34:46,732 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:46,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:46,757 INFO L225 Difference]: With dead ends: 975 [2022-01-10 02:34:46,757 INFO L226 Difference]: Without dead ends: 558 [2022-01-10 02:34:46,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:46,766 INFO L933 BasicCegarLoop]: 661 mSDtfsCounter, 1392 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 944 mSolverCounterSat, 244 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1397 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 244 IncrementalHoareTripleChecker+Valid, 944 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:46,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1397 Valid, 1880 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [244 Valid, 944 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:46,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2022-01-10 02:34:46,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 519. [2022-01-10 02:34:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 446 states have (on average 1.515695067264574) internal successors, (676), 452 states have internal predecessors, (676), 49 states have call successors, (49), 21 states have call predecessors, (49), 22 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2022-01-10 02:34:46,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 777 transitions. [2022-01-10 02:34:46,834 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 777 transitions. Word has length 65 [2022-01-10 02:34:46,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:46,834 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 777 transitions. [2022-01-10 02:34:46,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:46,835 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 777 transitions. [2022-01-10 02:34:46,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:46,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:46,848 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 02:34:46,848 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-10 02:34:46,848 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -166032207, now seen corresponding path program 1 times [2022-01-10 02:34:46,849 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481996887] [2022-01-10 02:34:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:46,849 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:46,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:46,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:46,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:46,961 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 02:34:46,962 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:46,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481996887] [2022-01-10 02:34:46,962 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481996887] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:46,962 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:46,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:46,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197965808] [2022-01-10 02:34:46,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:46,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:46,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:46,966 INFO L87 Difference]: Start difference. First operand 519 states and 777 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:47,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:47,833 INFO L93 Difference]: Finished difference Result 866 states and 1254 transitions. [2022-01-10 02:34:47,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:34:47,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:47,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:47,837 INFO L225 Difference]: With dead ends: 866 [2022-01-10 02:34:47,837 INFO L226 Difference]: Without dead ends: 689 [2022-01-10 02:34:47,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:34:47,839 INFO L933 BasicCegarLoop]: 701 mSDtfsCounter, 1556 mSDsluCounter, 1390 mSDsCounter, 0 mSdLazyCounter, 1230 mSolverCounterSat, 179 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 1409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 179 IncrementalHoareTripleChecker+Valid, 1230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:47,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1585 Valid, 2091 Invalid, 1409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [179 Valid, 1230 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:47,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-01-10 02:34:47,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 615. [2022-01-10 02:34:47,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 615 states, 522 states have (on average 1.4942528735632183) internal successors, (780), 530 states have internal predecessors, (780), 60 states have call successors, (60), 28 states have call predecessors, (60), 31 states have return successors, (71), 60 states have call predecessors, (71), 58 states have call successors, (71) [2022-01-10 02:34:47,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 911 transitions. [2022-01-10 02:34:47,868 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 911 transitions. Word has length 65 [2022-01-10 02:34:47,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:47,868 INFO L470 AbstractCegarLoop]: Abstraction has 615 states and 911 transitions. [2022-01-10 02:34:47,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:47,868 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 911 transitions. [2022-01-10 02:34:47,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:47,870 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:47,870 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 02:34:47,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-10 02:34:47,870 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:47,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:47,871 INFO L85 PathProgramCache]: Analyzing trace with hash 2100348979, now seen corresponding path program 1 times [2022-01-10 02:34:47,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:47,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740927655] [2022-01-10 02:34:47,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:47,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:47,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:47,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:47,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:47,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:47,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:47,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:47,997 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:47,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740927655] [2022-01-10 02:34:47,998 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740927655] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:47,998 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:47,998 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:47,998 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931808352] [2022-01-10 02:34:47,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:47,999 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:47,999 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:47,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:47,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:48,000 INFO L87 Difference]: Start difference. First operand 615 states and 911 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 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 02:34:48,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:48,921 INFO L93 Difference]: Finished difference Result 916 states and 1325 transitions. [2022-01-10 02:34:48,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:48,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:34:48,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:48,924 INFO L225 Difference]: With dead ends: 916 [2022-01-10 02:34:48,924 INFO L226 Difference]: Without dead ends: 649 [2022-01-10 02:34:48,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:34:48,925 INFO L933 BasicCegarLoop]: 633 mSDtfsCounter, 570 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 1519 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 2798 SdHoareTripleChecker+Invalid, 1611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:48,926 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [571 Valid, 2798 Invalid, 1611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1519 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-10 02:34:48,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 649 states. [2022-01-10 02:34:48,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 649 to 620. [2022-01-10 02:34:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 526 states have (on average 1.4866920152091254) internal successors, (782), 534 states have internal predecessors, (782), 60 states have call successors, (60), 28 states have call predecessors, (60), 32 states have return successors, (72), 61 states have call predecessors, (72), 58 states have call successors, (72) [2022-01-10 02:34:48,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 914 transitions. [2022-01-10 02:34:48,947 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 914 transitions. Word has length 65 [2022-01-10 02:34:48,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:48,948 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 914 transitions. [2022-01-10 02:34:48,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 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 02:34:48,948 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 914 transitions. [2022-01-10 02:34:48,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:48,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:48,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:48,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-10 02:34:48,950 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:48,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:48,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1070989681, now seen corresponding path program 1 times [2022-01-10 02:34:48,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:48,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825413576] [2022-01-10 02:34:48,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:48,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:48,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:48,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:48,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,051 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 02:34:49,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:49,055 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825413576] [2022-01-10 02:34:49,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825413576] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:49,055 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:49,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:49,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65489033] [2022-01-10 02:34:49,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:49,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:49,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:49,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:49,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:49,058 INFO L87 Difference]: Start difference. First operand 620 states and 914 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 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 02:34:49,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:49,870 INFO L93 Difference]: Finished difference Result 938 states and 1347 transitions. [2022-01-10 02:34:49,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:34:49,880 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-01-10 02:34:49,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:49,882 INFO L225 Difference]: With dead ends: 938 [2022-01-10 02:34:49,883 INFO L226 Difference]: Without dead ends: 666 [2022-01-10 02:34:49,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-01-10 02:34:49,884 INFO L933 BasicCegarLoop]: 630 mSDtfsCounter, 849 mSDsluCounter, 1877 mSDsCounter, 0 mSdLazyCounter, 1448 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2507 SdHoareTripleChecker+Invalid, 1586 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:49,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [851 Valid, 2507 Invalid, 1586 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1448 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:49,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2022-01-10 02:34:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 635. [2022-01-10 02:34:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 538 states have (on average 1.4758364312267658) internal successors, (794), 546 states have internal predecessors, (794), 60 states have call successors, (60), 28 states have call predecessors, (60), 35 states have return successors, (75), 64 states have call predecessors, (75), 58 states have call successors, (75) [2022-01-10 02:34:49,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 929 transitions. [2022-01-10 02:34:49,920 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 929 transitions. Word has length 65 [2022-01-10 02:34:49,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:49,921 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 929 transitions. [2022-01-10 02:34:49,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 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 02:34:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 929 transitions. [2022-01-10 02:34:49,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:49,922 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:49,922 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 02:34:49,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-10 02:34:49,923 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:49,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:49,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1837774221, now seen corresponding path program 1 times [2022-01-10 02:34:49,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:49,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106041214] [2022-01-10 02:34:49,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:49,923 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:49,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:49,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:49,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:50,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,020 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 02:34:50,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:50,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106041214] [2022-01-10 02:34:50,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106041214] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:50,022 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:50,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:50,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444477820] [2022-01-10 02:34:50,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:50,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:50,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:50,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:50,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:50,024 INFO L87 Difference]: Start difference. First operand 635 states and 929 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:50,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:50,861 INFO L93 Difference]: Finished difference Result 1027 states and 1440 transitions. [2022-01-10 02:34:50,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-10 02:34:50,862 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:50,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:50,865 INFO L225 Difference]: With dead ends: 1027 [2022-01-10 02:34:50,865 INFO L226 Difference]: Without dead ends: 742 [2022-01-10 02:34:50,866 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-01-10 02:34:50,867 INFO L933 BasicCegarLoop]: 653 mSDtfsCounter, 1580 mSDsluCounter, 1246 mSDsCounter, 0 mSdLazyCounter, 1140 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 1334 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:50,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 1899 Invalid, 1334 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1140 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:50,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-10 02:34:50,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 647. [2022-01-10 02:34:50,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 647 states, 548 states have (on average 1.467153284671533) internal successors, (804), 556 states have internal predecessors, (804), 61 states have call successors, (61), 29 states have call predecessors, (61), 36 states have return successors, (74), 65 states have call predecessors, (74), 59 states have call successors, (74) [2022-01-10 02:34:50,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 647 states to 647 states and 939 transitions. [2022-01-10 02:34:50,886 INFO L78 Accepts]: Start accepts. Automaton has 647 states and 939 transitions. Word has length 65 [2022-01-10 02:34:50,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:50,887 INFO L470 AbstractCegarLoop]: Abstraction has 647 states and 939 transitions. [2022-01-10 02:34:50,887 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:50,887 INFO L276 IsEmpty]: Start isEmpty. Operand 647 states and 939 transitions. [2022-01-10 02:34:50,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-01-10 02:34:50,888 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:50,888 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 02:34:50,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-10 02:34:50,888 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:50,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:50,889 INFO L85 PathProgramCache]: Analyzing trace with hash -1971787727, now seen corresponding path program 1 times [2022-01-10 02:34:50,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:50,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485185256] [2022-01-10 02:34:50,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:50,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:50,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:50,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:50,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:50,959 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 02:34:50,959 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:50,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485185256] [2022-01-10 02:34:50,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485185256] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:50,959 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:50,959 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:50,959 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500183202] [2022-01-10 02:34:50,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:50,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:50,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:50,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:50,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:50,960 INFO L87 Difference]: Start difference. First operand 647 states and 939 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:51,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:51,336 INFO L93 Difference]: Finished difference Result 1289 states and 1786 transitions. [2022-01-10 02:34:51,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-10 02:34:51,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-01-10 02:34:51,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:51,341 INFO L225 Difference]: With dead ends: 1289 [2022-01-10 02:34:51,341 INFO L226 Difference]: Without dead ends: 993 [2022-01-10 02:34:51,342 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:34:51,342 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1557 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:51,343 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1588 Valid, 1527 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:51,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-01-10 02:34:51,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 937. [2022-01-10 02:34:51,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 937 states, 772 states have (on average 1.4132124352331605) internal successors, (1091), 787 states have internal predecessors, (1091), 96 states have call successors, (96), 51 states have call predecessors, (96), 67 states have return successors, (131), 105 states have call predecessors, (131), 94 states have call successors, (131) [2022-01-10 02:34:51,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1318 transitions. [2022-01-10 02:34:51,397 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1318 transitions. Word has length 65 [2022-01-10 02:34:51,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:51,397 INFO L470 AbstractCegarLoop]: Abstraction has 937 states and 1318 transitions. [2022-01-10 02:34:51,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-01-10 02:34:51,397 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1318 transitions. [2022-01-10 02:34:51,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:34:51,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:51,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:51,399 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-10 02:34:51,399 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:51,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:51,399 INFO L85 PathProgramCache]: Analyzing trace with hash -313198551, now seen corresponding path program 1 times [2022-01-10 02:34:51,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:51,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760563055] [2022-01-10 02:34:51,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:51,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:51,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:51,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:51,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:51,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:51,455 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 02:34:51,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:51,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760563055] [2022-01-10 02:34:51,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760563055] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:51,455 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:51,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:51,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909417558] [2022-01-10 02:34:51,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:51,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:51,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:51,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:51,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:51,456 INFO L87 Difference]: Start difference. First operand 937 states and 1318 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:51,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:51,970 INFO L93 Difference]: Finished difference Result 2140 states and 2889 transitions. [2022-01-10 02:34:51,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:34:51,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:34:51,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:51,976 INFO L225 Difference]: With dead ends: 2140 [2022-01-10 02:34:51,976 INFO L226 Difference]: Without dead ends: 1533 [2022-01-10 02:34:51,978 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:51,978 INFO L933 BasicCegarLoop]: 634 mSDtfsCounter, 750 mSDsluCounter, 1153 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1787 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:51,978 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [758 Valid, 1787 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:34:51,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2022-01-10 02:34:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1418. [2022-01-10 02:34:52,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1418 states, 1151 states have (on average 1.3657688966116421) internal successors, (1572), 1169 states have internal predecessors, (1572), 141 states have call successors, (141), 95 states have call predecessors, (141), 124 states have return successors, (203), 160 states have call predecessors, (203), 139 states have call successors, (203) [2022-01-10 02:34:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1418 states to 1418 states and 1916 transitions. [2022-01-10 02:34:52,035 INFO L78 Accepts]: Start accepts. Automaton has 1418 states and 1916 transitions. Word has length 66 [2022-01-10 02:34:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:52,035 INFO L470 AbstractCegarLoop]: Abstraction has 1418 states and 1916 transitions. [2022-01-10 02:34:52,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1418 states and 1916 transitions. [2022-01-10 02:34:52,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-01-10 02:34:52,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:52,037 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 02:34:52,037 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-10 02:34:52,037 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:52,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1145041108, now seen corresponding path program 1 times [2022-01-10 02:34:52,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:52,038 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831944144] [2022-01-10 02:34:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:52,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:52,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:52,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:52,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:52,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,088 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 02:34:52,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:52,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831944144] [2022-01-10 02:34:52,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831944144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:52,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:52,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:52,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1620033519] [2022-01-10 02:34:52,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:52,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:52,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:52,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:52,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:52,090 INFO L87 Difference]: Start difference. First operand 1418 states and 1916 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:52,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:52,395 INFO L93 Difference]: Finished difference Result 3606 states and 4722 transitions. [2022-01-10 02:34:52,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:52,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-01-10 02:34:52,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:52,403 INFO L225 Difference]: With dead ends: 3606 [2022-01-10 02:34:52,404 INFO L226 Difference]: Without dead ends: 2538 [2022-01-10 02:34:52,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:34:52,406 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 1558 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 183 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1589 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 183 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:52,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1589 Valid, 1251 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [183 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:52,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2538 states. [2022-01-10 02:34:52,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2538 to 2280. [2022-01-10 02:34:52,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2280 states, 1817 states have (on average 1.3203082003302147) internal successors, (2399), 1845 states have internal predecessors, (2399), 239 states have call successors, (239), 179 states have call predecessors, (239), 222 states have return successors, (339), 262 states have call predecessors, (339), 237 states have call successors, (339) [2022-01-10 02:34:52,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2280 states to 2280 states and 2977 transitions. [2022-01-10 02:34:52,478 INFO L78 Accepts]: Start accepts. Automaton has 2280 states and 2977 transitions. Word has length 66 [2022-01-10 02:34:52,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:52,479 INFO L470 AbstractCegarLoop]: Abstraction has 2280 states and 2977 transitions. [2022-01-10 02:34:52,479 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:52,479 INFO L276 IsEmpty]: Start isEmpty. Operand 2280 states and 2977 transitions. [2022-01-10 02:34:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-01-10 02:34:52,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:52,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:52,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-10 02:34:52,482 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1831794968, now seen corresponding path program 1 times [2022-01-10 02:34:52,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:52,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666253097] [2022-01-10 02:34:52,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:52,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:52,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:52,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:52,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:52,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:52,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:52,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:52,548 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 02:34:52,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:52,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666253097] [2022-01-10 02:34:52,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666253097] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:52,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:52,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:52,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618864978] [2022-01-10 02:34:52,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:52,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:52,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:52,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:52,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:52,550 INFO L87 Difference]: Start difference. First operand 2280 states and 2977 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:52,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:52,870 INFO L93 Difference]: Finished difference Result 5190 states and 6627 transitions. [2022-01-10 02:34:52,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:34:52,873 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-01-10 02:34:52,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:52,885 INFO L225 Difference]: With dead ends: 5190 [2022-01-10 02:34:52,885 INFO L226 Difference]: Without dead ends: 3260 [2022-01-10 02:34:52,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:34:52,891 INFO L933 BasicCegarLoop]: 649 mSDtfsCounter, 1539 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1287 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:52,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1570 Valid, 1287 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [170 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:52,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-01-10 02:34:52,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3012. [2022-01-10 02:34:52,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3012 states, 2385 states have (on average 1.3010482180293501) internal successors, (3103), 2421 states have internal predecessors, (3103), 319 states have call successors, (319), 249 states have call predecessors, (319), 306 states have return successors, (448), 348 states have call predecessors, (448), 317 states have call successors, (448) [2022-01-10 02:34:52,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3012 states to 3012 states and 3870 transitions. [2022-01-10 02:34:52,987 INFO L78 Accepts]: Start accepts. Automaton has 3012 states and 3870 transitions. Word has length 72 [2022-01-10 02:34:52,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:52,987 INFO L470 AbstractCegarLoop]: Abstraction has 3012 states and 3870 transitions. [2022-01-10 02:34:52,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-01-10 02:34:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 3012 states and 3870 transitions. [2022-01-10 02:34:52,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-01-10 02:34:52,989 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:52,989 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:52,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-10 02:34:52,989 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:52,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:52,989 INFO L85 PathProgramCache]: Analyzing trace with hash -1467852209, now seen corresponding path program 1 times [2022-01-10 02:34:52,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:52,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535690032] [2022-01-10 02:34:52,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:52,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:53,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:53,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:53,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:53,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:53,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,040 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:53,040 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:53,040 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535690032] [2022-01-10 02:34:53,041 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535690032] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:53,041 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:53,041 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:34:53,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294159565] [2022-01-10 02:34:53,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:53,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:34:53,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:53,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:34:53,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:34:53,042 INFO L87 Difference]: Start difference. First operand 3012 states and 3870 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:53,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:53,425 INFO L93 Difference]: Finished difference Result 3786 states and 4801 transitions. [2022-01-10 02:34:53,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-10 02:34:53,426 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-01-10 02:34:53,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:53,439 INFO L225 Difference]: With dead ends: 3786 [2022-01-10 02:34:53,439 INFO L226 Difference]: Without dead ends: 3783 [2022-01-10 02:34:53,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-10 02:34:53,442 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1855 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1865 SdHoareTripleChecker+Valid, 1560 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:53,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1865 Valid, 1560 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-10 02:34:53,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3783 states. [2022-01-10 02:34:53,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3783 to 3506. [2022-01-10 02:34:53,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3506 states, 2770 states have (on average 1.2906137184115523) internal successors, (3575), 2811 states have internal predecessors, (3575), 369 states have call successors, (369), 293 states have call predecessors, (369), 365 states have return successors, (527), 408 states have call predecessors, (527), 368 states have call successors, (527) [2022-01-10 02:34:53,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3506 states to 3506 states and 4471 transitions. [2022-01-10 02:34:53,593 INFO L78 Accepts]: Start accepts. Automaton has 3506 states and 4471 transitions. Word has length 73 [2022-01-10 02:34:53,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:53,594 INFO L470 AbstractCegarLoop]: Abstraction has 3506 states and 4471 transitions. [2022-01-10 02:34:53,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:53,594 INFO L276 IsEmpty]: Start isEmpty. Operand 3506 states and 4471 transitions. [2022-01-10 02:34:53,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-01-10 02:34:53,595 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:53,595 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:53,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-10 02:34:53,596 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:53,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:53,597 INFO L85 PathProgramCache]: Analyzing trace with hash 1739934738, now seen corresponding path program 1 times [2022-01-10 02:34:53,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:53,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205883091] [2022-01-10 02:34:53,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:53,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:53,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:53,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:53,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:53,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:53,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,711 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:53,712 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205883091] [2022-01-10 02:34:53,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205883091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:34:53,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946987275] [2022-01-10 02:34:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:53,712 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:34:53,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:34:53,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:34:53,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-10 02:34:53,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:53,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-10 02:34:53,835 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:34:54,218 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:54,218 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:34:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:54,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946987275] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:34:54,398 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:34:54,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-01-10 02:34:54,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286607051] [2022-01-10 02:34:54,398 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:34:54,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-10 02:34:54,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-10 02:34:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:54,399 INFO L87 Difference]: Start difference. First operand 3506 states and 4471 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:55,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:55,792 INFO L93 Difference]: Finished difference Result 7947 states and 9957 transitions. [2022-01-10 02:34:55,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-10 02:34:55,792 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-01-10 02:34:55,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:55,821 INFO L225 Difference]: With dead ends: 7947 [2022-01-10 02:34:55,821 INFO L226 Difference]: Without dead ends: 7944 [2022-01-10 02:34:55,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-01-10 02:34:55,826 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 2633 mSDsluCounter, 1749 mSDsCounter, 0 mSdLazyCounter, 1820 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2703 SdHoareTripleChecker+Valid, 2551 SdHoareTripleChecker+Invalid, 2182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 1820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:55,826 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2703 Valid, 2551 Invalid, 2182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 1820 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7944 states. [2022-01-10 02:34:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7944 to 5296. [2022-01-10 02:34:56,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5296 states, 4174 states have (on average 1.281983708672736) internal successors, (5351), 4237 states have internal predecessors, (5351), 553 states have call successors, (553), 451 states have call predecessors, (553), 567 states have return successors, (805), 614 states have call predecessors, (805), 552 states have call successors, (805) [2022-01-10 02:34:56,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5296 states to 5296 states and 6709 transitions. [2022-01-10 02:34:56,088 INFO L78 Accepts]: Start accepts. Automaton has 5296 states and 6709 transitions. Word has length 74 [2022-01-10 02:34:56,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:56,088 INFO L470 AbstractCegarLoop]: Abstraction has 5296 states and 6709 transitions. [2022-01-10 02:34:56,088 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-01-10 02:34:56,088 INFO L276 IsEmpty]: Start isEmpty. Operand 5296 states and 6709 transitions. [2022-01-10 02:34:56,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-01-10 02:34:56,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:56,090 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:56,122 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-10 02:34:56,311 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-01-10 02:34:56,312 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:56,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:56,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1254124943, now seen corresponding path program 2 times [2022-01-10 02:34:56,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:56,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844550557] [2022-01-10 02:34:56,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:56,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:56,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:56,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:56,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:56,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:56,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:56,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:34:56,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:56,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844550557] [2022-01-10 02:34:56,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844550557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:56,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:56,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:34:56,360 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559207102] [2022-01-10 02:34:56,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:56,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:34:56,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:56,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:34:56,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:34:56,361 INFO L87 Difference]: Start difference. First operand 5296 states and 6709 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:56,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:56,808 INFO L93 Difference]: Finished difference Result 7978 states and 10082 transitions. [2022-01-10 02:34:56,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:34:56,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-01-10 02:34:56,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:56,829 INFO L225 Difference]: With dead ends: 7978 [2022-01-10 02:34:56,829 INFO L226 Difference]: Without dead ends: 3903 [2022-01-10 02:34:56,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:34:56,837 INFO L933 BasicCegarLoop]: 694 mSDtfsCounter, 1146 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 442 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:56,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1180 Valid, 1688 Invalid, 442 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 334 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-10 02:34:56,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2022-01-10 02:34:57,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3668. [2022-01-10 02:34:57,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3668 states, 2902 states have (on average 1.271881461061337) internal successors, (3691), 2943 states have internal predecessors, (3691), 385 states have call successors, (385), 307 states have call predecessors, (385), 379 states have return successors, (531), 424 states have call predecessors, (531), 384 states have call successors, (531) [2022-01-10 02:34:57,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3668 states to 3668 states and 4607 transitions. [2022-01-10 02:34:57,037 INFO L78 Accepts]: Start accepts. Automaton has 3668 states and 4607 transitions. Word has length 77 [2022-01-10 02:34:57,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:57,038 INFO L470 AbstractCegarLoop]: Abstraction has 3668 states and 4607 transitions. [2022-01-10 02:34:57,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-01-10 02:34:57,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3668 states and 4607 transitions. [2022-01-10 02:34:57,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-01-10 02:34:57,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:57,041 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:57,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-10 02:34:57,041 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:57,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:57,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1075548900, now seen corresponding path program 1 times [2022-01-10 02:34:57,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:57,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256577564] [2022-01-10 02:34:57,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:57,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:57,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:57,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:57,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:57,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:57,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-01-10 02:34:57,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:57,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256577564] [2022-01-10 02:34:57,113 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256577564] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:57,113 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:57,113 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-10 02:34:57,113 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234822599] [2022-01-10 02:34:57,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:57,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-10 02:34:57,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-10 02:34:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-10 02:34:57,116 INFO L87 Difference]: Start difference. First operand 3668 states and 4607 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:58,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:58,145 INFO L93 Difference]: Finished difference Result 10540 states and 13024 transitions. [2022-01-10 02:34:58,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-10 02:34:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-01-10 02:34:58,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:58,164 INFO L225 Difference]: With dead ends: 10540 [2022-01-10 02:34:58,164 INFO L226 Difference]: Without dead ends: 5903 [2022-01-10 02:34:58,172 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-01-10 02:34:58,173 INFO L933 BasicCegarLoop]: 697 mSDtfsCounter, 1637 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 1080 mSolverCounterSat, 340 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1653 SdHoareTripleChecker+Valid, 1965 SdHoareTripleChecker+Invalid, 1420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 340 IncrementalHoareTripleChecker+Valid, 1080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:58,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1653 Valid, 1965 Invalid, 1420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [340 Valid, 1080 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-10 02:34:58,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5903 states. [2022-01-10 02:34:58,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5903 to 5583. [2022-01-10 02:34:58,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5583 states, 4360 states have (on average 1.241743119266055) internal successors, (5414), 4444 states have internal predecessors, (5414), 589 states have call successors, (589), 481 states have call predecessors, (589), 632 states have return successors, (913), 664 states have call predecessors, (913), 588 states have call successors, (913) [2022-01-10 02:34:58,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5583 states to 5583 states and 6916 transitions. [2022-01-10 02:34:58,398 INFO L78 Accepts]: Start accepts. Automaton has 5583 states and 6916 transitions. Word has length 84 [2022-01-10 02:34:58,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:58,398 INFO L470 AbstractCegarLoop]: Abstraction has 5583 states and 6916 transitions. [2022-01-10 02:34:58,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:58,399 INFO L276 IsEmpty]: Start isEmpty. Operand 5583 states and 6916 transitions. [2022-01-10 02:34:58,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-01-10 02:34:58,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:58,401 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:34:58,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-10 02:34:58,401 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:58,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:58,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1873261453, now seen corresponding path program 1 times [2022-01-10 02:34:58,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:58,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420980693] [2022-01-10 02:34:58,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:58,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:58,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:58,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:58,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:58,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:58,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:58,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:58,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-01-10 02:34:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:58,470 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-10 02:34:58,470 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:34:58,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420980693] [2022-01-10 02:34:58,470 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420980693] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:34:58,470 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:34:58,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-01-10 02:34:58,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15819100] [2022-01-10 02:34:58,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:34:58,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-10 02:34:58,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:34:58,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-10 02:34:58,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:34:58,471 INFO L87 Difference]: Start difference. First operand 5583 states and 6916 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:59,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:34:59,670 INFO L93 Difference]: Finished difference Result 9586 states and 11756 transitions. [2022-01-10 02:34:59,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-10 02:34:59,670 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-01-10 02:34:59,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:34:59,682 INFO L225 Difference]: With dead ends: 9586 [2022-01-10 02:34:59,683 INFO L226 Difference]: Without dead ends: 4993 [2022-01-10 02:34:59,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-01-10 02:34:59,690 INFO L933 BasicCegarLoop]: 674 mSDtfsCounter, 1830 mSDsluCounter, 1623 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1874 SdHoareTripleChecker+Valid, 2297 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:34:59,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1874 Valid, 2297 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:34:59,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-01-10 02:34:59,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4659. [2022-01-10 02:34:59,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4659 states, 3649 states have (on average 1.2367771992326664) internal successors, (4513), 3715 states have internal predecessors, (4513), 490 states have call successors, (490), 396 states have call predecessors, (490), 518 states have return successors, (691), 554 states have call predecessors, (691), 489 states have call successors, (691) [2022-01-10 02:34:59,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4659 states to 4659 states and 5694 transitions. [2022-01-10 02:34:59,896 INFO L78 Accepts]: Start accepts. Automaton has 4659 states and 5694 transitions. Word has length 93 [2022-01-10 02:34:59,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:34:59,897 INFO L470 AbstractCegarLoop]: Abstraction has 4659 states and 5694 transitions. [2022-01-10 02:34:59,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-01-10 02:34:59,897 INFO L276 IsEmpty]: Start isEmpty. Operand 4659 states and 5694 transitions. [2022-01-10 02:34:59,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-01-10 02:34:59,902 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:34:59,902 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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] [2022-01-10 02:34:59,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-10 02:34:59,903 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:34:59,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:34:59,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1950710036, now seen corresponding path program 1 times [2022-01-10 02:34:59,903 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:34:59,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876154547] [2022-01-10 02:34:59,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:34:59,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:34:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:34:59,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:34:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:34:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:34:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:34:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:34:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:34:59,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:34:59,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:34:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-01-10 02:35:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-01-10 02:35:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-01-10 02:35:00,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:00,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:00,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-01-10 02:35:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-01-10 02:35:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-01-10 02:35:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,024 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-01-10 02:35:00,024 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:00,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876154547] [2022-01-10 02:35:00,025 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876154547] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:35:00,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1726966452] [2022-01-10 02:35:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:00,025 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:35:00,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:35:00,026 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:35:00,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-10 02:35:00,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 563 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-10 02:35:00,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:35:00,309 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-01-10 02:35:00,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-10 02:35:00,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1726966452] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:00,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-10 02:35:00,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-01-10 02:35:00,310 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564201378] [2022-01-10 02:35:00,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:00,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:35:00,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:00,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:35:00,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-01-10 02:35:00,311 INFO L87 Difference]: Start difference. First operand 4659 states and 5694 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:35:00,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:00,456 INFO L93 Difference]: Finished difference Result 6825 states and 8317 transitions. [2022-01-10 02:35:00,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:00,457 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-01-10 02:35:00,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:00,467 INFO L225 Difference]: With dead ends: 6825 [2022-01-10 02:35:00,467 INFO L226 Difference]: Without dead ends: 2520 [2022-01-10 02:35:00,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:35:00,476 INFO L933 BasicCegarLoop]: 642 mSDtfsCounter, 34 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3173 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:00,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3173 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-10 02:35:00,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2520 states. [2022-01-10 02:35:00,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2520 to 2395. [2022-01-10 02:35:00,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2395 states, 1962 states have (on average 1.2533129459734964) internal successors, (2459), 1977 states have internal predecessors, (2459), 214 states have call successors, (214), 162 states have call predecessors, (214), 217 states have return successors, (298), 256 states have call predecessors, (298), 213 states have call successors, (298) [2022-01-10 02:35:00,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2395 states to 2395 states and 2971 transitions. [2022-01-10 02:35:00,557 INFO L78 Accepts]: Start accepts. Automaton has 2395 states and 2971 transitions. Word has length 145 [2022-01-10 02:35:00,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:00,557 INFO L470 AbstractCegarLoop]: Abstraction has 2395 states and 2971 transitions. [2022-01-10 02:35:00,557 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-01-10 02:35:00,557 INFO L276 IsEmpty]: Start isEmpty. Operand 2395 states and 2971 transitions. [2022-01-10 02:35:00,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-01-10 02:35:00,560 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:00,560 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:00,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-10 02:35:00,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-10 02:35:00,775 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:00,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:00,775 INFO L85 PathProgramCache]: Analyzing trace with hash 2099513894, now seen corresponding path program 1 times [2022-01-10 02:35:00,776 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:00,776 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610358165] [2022-01-10 02:35:00,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:00,776 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:00,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:00,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:00,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:00,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:35:00,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:35:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-01-10 02:35:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-01-10 02:35:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-01-10 02:35:00,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-01-10 02:35:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:00,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-01-10 02:35:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-01-10 02:35:00,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-01-10 02:35:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-01-10 02:35:00,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:00,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610358165] [2022-01-10 02:35:00,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610358165] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:00,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:00,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:35:00,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017866538] [2022-01-10 02:35:00,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:00,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:35:00,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:35:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:35:00,839 INFO L87 Difference]: Start difference. First operand 2395 states and 2971 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 02:35:01,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:01,341 INFO L93 Difference]: Finished difference Result 2460 states and 3039 transitions. [2022-01-10 02:35:01,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:01,342 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-01-10 02:35:01,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:01,352 INFO L225 Difference]: With dead ends: 2460 [2022-01-10 02:35:01,352 INFO L226 Difference]: Without dead ends: 2017 [2022-01-10 02:35:01,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-10 02:35:01,354 INFO L933 BasicCegarLoop]: 621 mSDtfsCounter, 945 mSDsluCounter, 824 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1445 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:01,354 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1445 Invalid, 513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-10 02:35:01,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2017 states. [2022-01-10 02:35:01,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2017 to 1955. [2022-01-10 02:35:01,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1955 states, 1618 states have (on average 1.2700865265760197) internal successors, (2055), 1630 states have internal predecessors, (2055), 168 states have call successors, (168), 122 states have call predecessors, (168), 167 states have return successors, (234), 203 states have call predecessors, (234), 167 states have call successors, (234) [2022-01-10 02:35:01,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1955 states to 1955 states and 2457 transitions. [2022-01-10 02:35:01,421 INFO L78 Accepts]: Start accepts. Automaton has 1955 states and 2457 transitions. Word has length 147 [2022-01-10 02:35:01,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:01,421 INFO L470 AbstractCegarLoop]: Abstraction has 1955 states and 2457 transitions. [2022-01-10 02:35:01,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-01-10 02:35:01,421 INFO L276 IsEmpty]: Start isEmpty. Operand 1955 states and 2457 transitions. [2022-01-10 02:35:01,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-01-10 02:35:01,424 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:01,424 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:01,424 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-10 02:35:01,424 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:01,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:01,424 INFO L85 PathProgramCache]: Analyzing trace with hash 38806, now seen corresponding path program 1 times [2022-01-10 02:35:01,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:01,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323508948] [2022-01-10 02:35:01,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:01,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:01,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:35:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:35:01,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:35:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:35:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-01-10 02:35:01,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-01-10 02:35:01,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:01,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-01-10 02:35:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-01-10 02:35:01,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-01-10 02:35:01,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:01,535 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-01-10 02:35:01,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:01,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323508948] [2022-01-10 02:35:01,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323508948] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:01,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:01,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:01,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269406872] [2022-01-10 02:35:01,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:01,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:01,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:01,537 INFO L87 Difference]: Start difference. First operand 1955 states and 2457 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 02:35:02,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:02,158 INFO L93 Difference]: Finished difference Result 3432 states and 4256 transitions. [2022-01-10 02:35:02,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-10 02:35:02,158 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-01-10 02:35:02,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:02,163 INFO L225 Difference]: With dead ends: 3432 [2022-01-10 02:35:02,163 INFO L226 Difference]: Without dead ends: 2056 [2022-01-10 02:35:02,165 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:02,166 INFO L933 BasicCegarLoop]: 654 mSDtfsCounter, 599 mSDsluCounter, 1548 mSDsCounter, 0 mSdLazyCounter, 881 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:02,166 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [600 Valid, 2202 Invalid, 969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 881 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-10 02:35:02,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2056 states. [2022-01-10 02:35:02,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2056 to 1864. [2022-01-10 02:35:02,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1549 states have (on average 1.2717882504841833) internal successors, (1970), 1562 states have internal predecessors, (1970), 159 states have call successors, (159), 117 states have call predecessors, (159), 154 states have return successors, (218), 185 states have call predecessors, (218), 158 states have call successors, (218) [2022-01-10 02:35:02,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2347 transitions. [2022-01-10 02:35:02,228 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2347 transitions. Word has length 159 [2022-01-10 02:35:02,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:02,228 INFO L470 AbstractCegarLoop]: Abstraction has 1864 states and 2347 transitions. [2022-01-10 02:35:02,228 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-01-10 02:35:02,228 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2347 transitions. [2022-01-10 02:35:02,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-01-10 02:35:02,231 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:02,231 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:35:02,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-10 02:35:02,231 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:02,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:02,231 INFO L85 PathProgramCache]: Analyzing trace with hash 2014192118, now seen corresponding path program 1 times [2022-01-10 02:35:02,231 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:02,231 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215373067] [2022-01-10 02:35:02,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:02,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:02,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:02,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-01-10 02:35:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-01-10 02:35:02,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:02,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:02,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-01-10 02:35:02,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-01-10 02:35:02,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-01-10 02:35:02,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-01-10 02:35:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-01-10 02:35:02,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-01-10 02:35:02,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-01-10 02:35:02,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-01-10 02:35:02,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-01-10 02:35:02,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-01-10 02:35:02,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,338 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-01-10 02:35:02,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215373067] [2022-01-10 02:35:02,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215373067] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-10 02:35:02,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1901734581] [2022-01-10 02:35:02,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:02,339 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-10 02:35:02,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-10 02:35:02,340 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-10 02:35:02,341 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-10 02:35:02,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:02,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-10 02:35:02,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-10 02:35:02,666 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-01-10 02:35:02,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-10 02:35:03,050 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-01-10 02:35:03,050 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1901734581] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-10 02:35:03,050 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-10 02:35:03,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-01-10 02:35:03,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885196437] [2022-01-10 02:35:03,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-10 02:35:03,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-10 02:35:03,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-10 02:35:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-10 02:35:03,052 INFO L87 Difference]: Start difference. First operand 1864 states and 2347 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:35:04,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:04,315 INFO L93 Difference]: Finished difference Result 3836 states and 4800 transitions. [2022-01-10 02:35:04,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-10 02:35:04,316 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-01-10 02:35:04,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:04,322 INFO L225 Difference]: With dead ends: 3836 [2022-01-10 02:35:04,322 INFO L226 Difference]: Without dead ends: 2404 [2022-01-10 02:35:04,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 354 SyntacticMatches, 4 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-01-10 02:35:04,328 INFO L933 BasicCegarLoop]: 591 mSDtfsCounter, 2301 mSDsluCounter, 2280 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2332 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 2578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:04,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2332 Valid, 2871 Invalid, 2578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-01-10 02:35:04,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2404 states. [2022-01-10 02:35:04,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2404 to 2254. [2022-01-10 02:35:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1827 states have (on average 1.2441160372194855) internal successors, (2273), 1848 states have internal predecessors, (2273), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-01-10 02:35:04,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2818 transitions. [2022-01-10 02:35:04,450 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2818 transitions. Word has length 162 [2022-01-10 02:35:04,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:04,450 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 2818 transitions. [2022-01-10 02:35:04,450 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-01-10 02:35:04,450 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2818 transitions. [2022-01-10 02:35:04,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:04,454 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:04,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:04,474 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-10 02:35:04,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-01-10 02:35:04,672 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:04,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:04,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1411211214, now seen corresponding path program 1 times [2022-01-10 02:35:04,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:04,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528557789] [2022-01-10 02:35:04,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:04,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:04,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:04,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:04,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:04,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:04,767 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 02:35:04,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:04,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528557789] [2022-01-10 02:35:04,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528557789] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:04,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:04,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-10 02:35:04,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528667168] [2022-01-10 02:35:04,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:04,768 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-10 02:35:04,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:04,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-10 02:35:04,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-10 02:35:04,769 INFO L87 Difference]: Start difference. First operand 2254 states and 2818 transitions. Second operand has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:05,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:05,889 INFO L93 Difference]: Finished difference Result 2691 states and 3522 transitions. [2022-01-10 02:35:05,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:05,890 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:05,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:05,894 INFO L225 Difference]: With dead ends: 2691 [2022-01-10 02:35:05,894 INFO L226 Difference]: Without dead ends: 2374 [2022-01-10 02:35:05,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-01-10 02:35:05,896 INFO L933 BasicCegarLoop]: 690 mSDtfsCounter, 978 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1000 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 790 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:05,896 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1000 Valid, 1194 Invalid, 790 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:35:05,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2374 states. [2022-01-10 02:35:06,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2374 to 2254. [2022-01-10 02:35:06,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2254 states, 1827 states have (on average 1.2435686918445539) internal successors, (2272), 1848 states have internal predecessors, (2272), 213 states have call successors, (213), 167 states have call predecessors, (213), 212 states have return successors, (332), 239 states have call predecessors, (332), 212 states have call successors, (332) [2022-01-10 02:35:06,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2254 states to 2254 states and 2817 transitions. [2022-01-10 02:35:06,038 INFO L78 Accepts]: Start accepts. Automaton has 2254 states and 2817 transitions. Word has length 156 [2022-01-10 02:35:06,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:06,038 INFO L470 AbstractCegarLoop]: Abstraction has 2254 states and 2817 transitions. [2022-01-10 02:35:06,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 29.2) internal successors, (146), 3 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:06,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2254 states and 2817 transitions. [2022-01-10 02:35:06,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:06,042 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:06,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:06,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-10 02:35:06,043 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:06,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:06,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1749498764, now seen corresponding path program 1 times [2022-01-10 02:35:06,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:06,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803175518] [2022-01-10 02:35:06,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:06,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:06,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:06,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:06,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:06,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:06,143 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 02:35:06,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:06,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803175518] [2022-01-10 02:35:06,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803175518] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:06,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:06,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-10 02:35:06,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660490754] [2022-01-10 02:35:06,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:06,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-10 02:35:06,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:06,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-10 02:35:06,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-01-10 02:35:06,145 INFO L87 Difference]: Start difference. First operand 2254 states and 2817 transitions. Second operand has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:08,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:08,216 INFO L93 Difference]: Finished difference Result 3126 states and 4224 transitions. [2022-01-10 02:35:08,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-10 02:35:08,216 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:08,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:08,221 INFO L225 Difference]: With dead ends: 3126 [2022-01-10 02:35:08,221 INFO L226 Difference]: Without dead ends: 2817 [2022-01-10 02:35:08,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:08,223 INFO L933 BasicCegarLoop]: 724 mSDtfsCounter, 1538 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1565 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 1973 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:08,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1565 Valid, 1698 Invalid, 1973 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-01-10 02:35:08,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2817 states. [2022-01-10 02:35:08,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2817 to 2578. [2022-01-10 02:35:08,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2578 states, 2125 states have (on average 1.2922352941176471) internal successors, (2746), 2147 states have internal predecessors, (2746), 232 states have call successors, (232), 173 states have call predecessors, (232), 219 states have return successors, (354), 258 states have call predecessors, (354), 231 states have call successors, (354) [2022-01-10 02:35:08,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2578 states to 2578 states and 3332 transitions. [2022-01-10 02:35:08,349 INFO L78 Accepts]: Start accepts. Automaton has 2578 states and 3332 transitions. Word has length 156 [2022-01-10 02:35:08,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:08,349 INFO L470 AbstractCegarLoop]: Abstraction has 2578 states and 3332 transitions. [2022-01-10 02:35:08,349 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 24.333333333333332) internal successors, (146), 4 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:08,349 INFO L276 IsEmpty]: Start isEmpty. Operand 2578 states and 3332 transitions. [2022-01-10 02:35:08,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:08,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:08,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:08,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-10 02:35:08,352 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:08,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:08,352 INFO L85 PathProgramCache]: Analyzing trace with hash 73101560, now seen corresponding path program 1 times [2022-01-10 02:35:08,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:08,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101945661] [2022-01-10 02:35:08,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:08,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:08,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:08,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:08,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:08,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:08,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-10 02:35:08,452 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:08,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101945661] [2022-01-10 02:35:08,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101945661] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:08,453 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:08,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:08,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3081485] [2022-01-10 02:35:08,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:08,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:08,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:08,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:08,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:08,454 INFO L87 Difference]: Start difference. First operand 2578 states and 3332 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:10,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:10,965 INFO L93 Difference]: Finished difference Result 3909 states and 5480 transitions. [2022-01-10 02:35:10,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:10,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:10,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:10,973 INFO L225 Difference]: With dead ends: 3909 [2022-01-10 02:35:10,973 INFO L226 Difference]: Without dead ends: 3276 [2022-01-10 02:35:10,975 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:10,976 INFO L933 BasicCegarLoop]: 979 mSDtfsCounter, 1560 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2857 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 2803 SdHoareTripleChecker+Invalid, 2963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 2857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:10,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1587 Valid, 2803 Invalid, 2963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 2857 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-10 02:35:10,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3276 states. [2022-01-10 02:35:11,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3276 to 2879. [2022-01-10 02:35:11,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2879 states, 2400 states have (on average 1.3225) internal successors, (3174), 2423 states have internal predecessors, (3174), 251 states have call successors, (251), 179 states have call predecessors, (251), 226 states have return successors, (375), 278 states have call predecessors, (375), 250 states have call successors, (375) [2022-01-10 02:35:11,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2879 states to 2879 states and 3800 transitions. [2022-01-10 02:35:11,135 INFO L78 Accepts]: Start accepts. Automaton has 2879 states and 3800 transitions. Word has length 156 [2022-01-10 02:35:11,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:11,136 INFO L470 AbstractCegarLoop]: Abstraction has 2879 states and 3800 transitions. [2022-01-10 02:35:11,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:11,136 INFO L276 IsEmpty]: Start isEmpty. Operand 2879 states and 3800 transitions. [2022-01-10 02:35:11,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:11,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:11,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:11,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-10 02:35:11,139 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:11,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:11,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1544338890, now seen corresponding path program 1 times [2022-01-10 02:35:11,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:11,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006359750] [2022-01-10 02:35:11,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:11,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:11,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:11,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:11,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:11,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:11,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:11,232 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 02:35:11,232 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:11,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006359750] [2022-01-10 02:35:11,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006359750] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:11,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:11,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:11,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621234238] [2022-01-10 02:35:11,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:11,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:11,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:11,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:11,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:11,234 INFO L87 Difference]: Start difference. First operand 2879 states and 3800 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:13,610 INFO L93 Difference]: Finished difference Result 5063 states and 7316 transitions. [2022-01-10 02:35:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:13,633 INFO L225 Difference]: With dead ends: 5063 [2022-01-10 02:35:13,633 INFO L226 Difference]: Without dead ends: 4129 [2022-01-10 02:35:13,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:13,639 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1653 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2561 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 2038 SdHoareTripleChecker+Invalid, 2702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:13,639 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 2038 Invalid, 2702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2561 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:35:13,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4129 states. [2022-01-10 02:35:13,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4129 to 3482. [2022-01-10 02:35:13,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3482 states, 2951 states have (on average 1.3659776347001016) internal successors, (4031), 2976 states have internal predecessors, (4031), 289 states have call successors, (289), 191 states have call predecessors, (289), 240 states have return successors, (421), 318 states have call predecessors, (421), 288 states have call successors, (421) [2022-01-10 02:35:13,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3482 states to 3482 states and 4741 transitions. [2022-01-10 02:35:13,853 INFO L78 Accepts]: Start accepts. Automaton has 3482 states and 4741 transitions. Word has length 156 [2022-01-10 02:35:13,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:13,853 INFO L470 AbstractCegarLoop]: Abstraction has 3482 states and 4741 transitions. [2022-01-10 02:35:13,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:13,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3482 states and 4741 transitions. [2022-01-10 02:35:13,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:13,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:13,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:13,856 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-10 02:35:13,857 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:13,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:13,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1180872392, now seen corresponding path program 1 times [2022-01-10 02:35:13,857 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:13,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1542894649] [2022-01-10 02:35:13,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:13,857 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:13,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:13,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:13,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:13,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:13,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:13,954 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 02:35:13,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:13,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1542894649] [2022-01-10 02:35:13,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1542894649] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:13,955 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:13,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:13,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266917515] [2022-01-10 02:35:13,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:13,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:13,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:13,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:13,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:13,956 INFO L87 Difference]: Start difference. First operand 3482 states and 4741 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:16,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:16,552 INFO L93 Difference]: Finished difference Result 7282 states and 10825 transitions. [2022-01-10 02:35:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:16,553 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:16,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:16,569 INFO L225 Difference]: With dead ends: 7282 [2022-01-10 02:35:16,569 INFO L226 Difference]: Without dead ends: 5745 [2022-01-10 02:35:16,576 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:16,577 INFO L933 BasicCegarLoop]: 969 mSDtfsCounter, 1552 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2859 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1579 SdHoareTripleChecker+Valid, 2793 SdHoareTripleChecker+Invalid, 2967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2859 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:16,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1579 Valid, 2793 Invalid, 2967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2859 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:35:16,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5745 states. [2022-01-10 02:35:16,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5745 to 4689. [2022-01-10 02:35:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4689 states, 4054 states have (on average 1.4171188949185989) internal successors, (5745), 4083 states have internal predecessors, (5745), 365 states have call successors, (365), 215 states have call predecessors, (365), 268 states have return successors, (519), 398 states have call predecessors, (519), 364 states have call successors, (519) [2022-01-10 02:35:16,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4689 states to 4689 states and 6629 transitions. [2022-01-10 02:35:16,885 INFO L78 Accepts]: Start accepts. Automaton has 4689 states and 6629 transitions. Word has length 156 [2022-01-10 02:35:16,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:16,885 INFO L470 AbstractCegarLoop]: Abstraction has 4689 states and 6629 transitions. [2022-01-10 02:35:16,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:16,888 INFO L276 IsEmpty]: Start isEmpty. Operand 4689 states and 6629 transitions. [2022-01-10 02:35:16,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:16,892 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:16,892 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:16,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-10 02:35:16,892 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:16,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:16,892 INFO L85 PathProgramCache]: Analyzing trace with hash -892053002, now seen corresponding path program 1 times [2022-01-10 02:35:16,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:16,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134668221] [2022-01-10 02:35:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:16,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:16,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:16,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:16,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:16,982 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 02:35:16,982 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:16,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134668221] [2022-01-10 02:35:16,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134668221] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:16,983 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:16,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:16,983 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234422941] [2022-01-10 02:35:16,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:16,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:16,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:16,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:16,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:16,985 INFO L87 Difference]: Start difference. First operand 4689 states and 6629 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:19,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:19,734 INFO L93 Difference]: Finished difference Result 11719 states and 17859 transitions. [2022-01-10 02:35:19,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:19,734 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:19,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:19,758 INFO L225 Difference]: With dead ends: 11719 [2022-01-10 02:35:19,758 INFO L226 Difference]: Without dead ends: 8975 [2022-01-10 02:35:19,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:19,766 INFO L933 BasicCegarLoop]: 965 mSDtfsCounter, 1548 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2854 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 2789 SdHoareTripleChecker+Invalid, 2962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 2854 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:19,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1575 Valid, 2789 Invalid, 2962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 2854 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:35:19,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8975 states. [2022-01-10 02:35:20,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8975 to 7108. [2022-01-10 02:35:20,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.46512370311253) internal successors, (9179), 6302 states have internal predecessors, (9179), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:20,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10429 transitions. [2022-01-10 02:35:20,147 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10429 transitions. Word has length 156 [2022-01-10 02:35:20,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:20,147 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 10429 transitions. [2022-01-10 02:35:20,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:20,148 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10429 transitions. [2022-01-10 02:35:20,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:20,152 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:20,152 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:20,152 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-10 02:35:20,152 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:20,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:20,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1436925576, now seen corresponding path program 1 times [2022-01-10 02:35:20,152 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:20,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700287521] [2022-01-10 02:35:20,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:20,153 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:20,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:20,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:20,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:20,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:20,236 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 02:35:20,236 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:20,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700287521] [2022-01-10 02:35:20,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700287521] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:20,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:20,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:20,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561181168] [2022-01-10 02:35:20,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:20,237 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:20,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:20,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:20,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:20,237 INFO L87 Difference]: Start difference. First operand 7108 states and 10429 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:22,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:22,184 INFO L93 Difference]: Finished difference Result 14228 states and 21906 transitions. [2022-01-10 02:35:22,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:22,185 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:22,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:22,209 INFO L225 Difference]: With dead ends: 14228 [2022-01-10 02:35:22,209 INFO L226 Difference]: Without dead ends: 9065 [2022-01-10 02:35:22,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:22,222 INFO L933 BasicCegarLoop]: 657 mSDtfsCounter, 1174 mSDsluCounter, 1011 mSDsCounter, 0 mSdLazyCounter, 1387 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1202 SdHoareTripleChecker+Valid, 1668 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:22,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1202 Valid, 1668 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1387 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-10 02:35:22,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9065 states. [2022-01-10 02:35:22,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9065 to 7108. [2022-01-10 02:35:22,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.4624102154828411) internal successors, (9162), 6302 states have internal predecessors, (9162), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:22,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10412 transitions. [2022-01-10 02:35:22,663 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10412 transitions. Word has length 156 [2022-01-10 02:35:22,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:22,664 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 10412 transitions. [2022-01-10 02:35:22,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:22,664 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10412 transitions. [2022-01-10 02:35:22,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:22,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:22,669 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:22,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-10 02:35:22,669 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:22,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:22,670 INFO L85 PathProgramCache]: Analyzing trace with hash -761765450, now seen corresponding path program 1 times [2022-01-10 02:35:22,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:22,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704274375] [2022-01-10 02:35:22,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:22,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:22,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:22,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:22,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:22,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:22,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:22,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:22,773 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 02:35:22,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:22,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704274375] [2022-01-10 02:35:22,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704274375] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:22,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:22,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:22,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909419568] [2022-01-10 02:35:22,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:22,774 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:22,774 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:22,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:22,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:22,775 INFO L87 Difference]: Start difference. First operand 7108 states and 10412 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:24,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:24,398 INFO L93 Difference]: Finished difference Result 14193 states and 21786 transitions. [2022-01-10 02:35:24,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:24,399 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:24,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:24,423 INFO L225 Difference]: With dead ends: 14193 [2022-01-10 02:35:24,424 INFO L226 Difference]: Without dead ends: 9030 [2022-01-10 02:35:24,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:24,435 INFO L933 BasicCegarLoop]: 651 mSDtfsCounter, 1364 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1219 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1392 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:24,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1392 Valid, 1442 Invalid, 1373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1219 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:35:24,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9030 states. [2022-01-10 02:35:24,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9030 to 7108. [2022-01-10 02:35:24,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7108 states, 6265 states have (on average 1.4596967278531525) internal successors, (9145), 6302 states have internal predecessors, (9145), 517 states have call successors, (517), 263 states have call predecessors, (517), 324 states have return successors, (733), 558 states have call predecessors, (733), 516 states have call successors, (733) [2022-01-10 02:35:24,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7108 states to 7108 states and 10395 transitions. [2022-01-10 02:35:24,954 INFO L78 Accepts]: Start accepts. Automaton has 7108 states and 10395 transitions. Word has length 156 [2022-01-10 02:35:24,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:24,955 INFO L470 AbstractCegarLoop]: Abstraction has 7108 states and 10395 transitions. [2022-01-10 02:35:24,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:24,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7108 states and 10395 transitions. [2022-01-10 02:35:24,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:24,959 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:24,959 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-10 02:35:24,959 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1346537100, now seen corresponding path program 1 times [2022-01-10 02:35:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903305931] [2022-01-10 02:35:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:24,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:24,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:24,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:24,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:25,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:25,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:25,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:25,047 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 02:35:25,047 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:25,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903305931] [2022-01-10 02:35:25,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903305931] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:25,048 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:25,048 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:25,048 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460910006] [2022-01-10 02:35:25,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:25,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:25,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:25,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:25,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:25,049 INFO L87 Difference]: Start difference. First operand 7108 states and 10395 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:28,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:28,331 INFO L93 Difference]: Finished difference Result 20539 states and 31715 transitions. [2022-01-10 02:35:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:28,331 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:28,374 INFO L225 Difference]: With dead ends: 20539 [2022-01-10 02:35:28,374 INFO L226 Difference]: Without dead ends: 15376 [2022-01-10 02:35:28,388 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:28,388 INFO L933 BasicCegarLoop]: 943 mSDtfsCounter, 1531 mSDsluCounter, 1824 mSDsCounter, 0 mSdLazyCounter, 2794 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1558 SdHoareTripleChecker+Valid, 2767 SdHoareTripleChecker+Invalid, 2906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2794 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:28,389 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1558 Valid, 2767 Invalid, 2906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2794 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-10 02:35:28,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15376 states. [2022-01-10 02:35:29,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15376 to 12009. [2022-01-10 02:35:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12009 states, 10750 states have (on average 1.4946976744186047) internal successors, (16068), 10803 states have internal predecessors, (16068), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-01-10 02:35:29,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18104 transitions. [2022-01-10 02:35:29,304 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18104 transitions. Word has length 156 [2022-01-10 02:35:29,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:29,304 INFO L470 AbstractCegarLoop]: Abstraction has 12009 states and 18104 transitions. [2022-01-10 02:35:29,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:29,305 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18104 transitions. [2022-01-10 02:35:29,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:29,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:29,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:29,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-10 02:35:29,314 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:29,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:29,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1781042698, now seen corresponding path program 1 times [2022-01-10 02:35:29,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:29,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535673707] [2022-01-10 02:35:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:29,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:29,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:29,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:29,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:29,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:29,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:29,408 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 02:35:29,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:29,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535673707] [2022-01-10 02:35:29,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535673707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:29,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:29,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:29,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857701704] [2022-01-10 02:35:29,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:29,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:29,409 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:29,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:29,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:29,410 INFO L87 Difference]: Start difference. First operand 12009 states and 18104 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:31,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:31,596 INFO L93 Difference]: Finished difference Result 25607 states and 39963 transitions. [2022-01-10 02:35:31,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-10 02:35:31,597 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:31,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:31,640 INFO L225 Difference]: With dead ends: 25607 [2022-01-10 02:35:31,641 INFO L226 Difference]: Without dead ends: 15543 [2022-01-10 02:35:31,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-10 02:35:31,666 INFO L933 BasicCegarLoop]: 644 mSDtfsCounter, 1363 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1204 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1391 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 1358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:31,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1391 Valid, 1435 Invalid, 1358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1204 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-10 02:35:31,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15543 states. [2022-01-10 02:35:32,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15543 to 12009. [2022-01-10 02:35:32,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12009 states, 10750 states have (on average 1.4916279069767442) internal successors, (16035), 10803 states have internal predecessors, (16035), 821 states have call successors, (821), 359 states have call predecessors, (821), 436 states have return successors, (1215), 878 states have call predecessors, (1215), 820 states have call successors, (1215) [2022-01-10 02:35:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12009 states to 12009 states and 18071 transitions. [2022-01-10 02:35:32,560 INFO L78 Accepts]: Start accepts. Automaton has 12009 states and 18071 transitions. Word has length 156 [2022-01-10 02:35:32,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:32,560 INFO L470 AbstractCegarLoop]: Abstraction has 12009 states and 18071 transitions. [2022-01-10 02:35:32,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:32,560 INFO L276 IsEmpty]: Start isEmpty. Operand 12009 states and 18071 transitions. [2022-01-10 02:35:32,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:32,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:32,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:32,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-10 02:35:32,567 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash 2084266292, now seen corresponding path program 1 times [2022-01-10 02:35:32,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:32,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509411065] [2022-01-10 02:35:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:32,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:32,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:32,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:32,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:32,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:32,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:32,681 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 02:35:32,681 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:32,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509411065] [2022-01-10 02:35:32,682 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509411065] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:32,682 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:32,682 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:32,682 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365738051] [2022-01-10 02:35:32,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:32,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:32,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:32,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:32,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:32,683 INFO L87 Difference]: Start difference. First operand 12009 states and 18071 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:37,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-10 02:35:37,329 INFO L93 Difference]: Finished difference Result 38254 states and 59744 transitions. [2022-01-10 02:35:37,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-10 02:35:37,329 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 156 [2022-01-10 02:35:37,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-10 02:35:37,412 INFO L225 Difference]: With dead ends: 38254 [2022-01-10 02:35:37,412 INFO L226 Difference]: Without dead ends: 28190 [2022-01-10 02:35:37,440 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-01-10 02:35:37,444 INFO L933 BasicCegarLoop]: 732 mSDtfsCounter, 1611 mSDsluCounter, 1278 mSDsCounter, 0 mSdLazyCounter, 2495 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2495 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-10 02:35:37,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1638 Valid, 2010 Invalid, 2639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2495 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-10 02:35:37,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28190 states. [2022-01-10 02:35:39,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28190 to 21869. [2022-01-10 02:35:39,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21869 states, 19778 states have (on average 1.5126403074122763) internal successors, (29917), 19863 states have internal predecessors, (29917), 1429 states have call successors, (1429), 551 states have call predecessors, (1429), 660 states have return successors, (2341), 1518 states have call predecessors, (2341), 1428 states have call successors, (2341) [2022-01-10 02:35:39,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21869 states to 21869 states and 33687 transitions. [2022-01-10 02:35:39,169 INFO L78 Accepts]: Start accepts. Automaton has 21869 states and 33687 transitions. Word has length 156 [2022-01-10 02:35:39,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-10 02:35:39,170 INFO L470 AbstractCegarLoop]: Abstraction has 21869 states and 33687 transitions. [2022-01-10 02:35:39,170 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-01-10 02:35:39,170 INFO L276 IsEmpty]: Start isEmpty. Operand 21869 states and 33687 transitions. [2022-01-10 02:35:39,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-01-10 02:35:39,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-10 02:35:39,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-10 02:35:39,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-10 02:35:39,180 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-10 02:35:39,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-10 02:35:39,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1377669686, now seen corresponding path program 1 times [2022-01-10 02:35:39,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-10 02:35:39,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523635041] [2022-01-10 02:35:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-10 02:35:39,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-10 02:35:39,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-01-10 02:35:39,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-01-10 02:35:39,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-01-10 02:35:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-01-10 02:35:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-01-10 02:35:39,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-10 02:35:39,270 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 02:35:39,270 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-10 02:35:39,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523635041] [2022-01-10 02:35:39,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523635041] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-10 02:35:39,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-10 02:35:39,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-10 02:35:39,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731951734] [2022-01-10 02:35:39,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-10 02:35:39,270 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-10 02:35:39,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-10 02:35:39,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-10 02:35:39,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-01-10 02:35:39,271 INFO L87 Difference]: Start difference. First operand 21869 states and 33687 transitions. Second operand has 7 states, 7 states have (on average 20.857142857142858) internal successors, (146), 5 states have internal predecessors, (146), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)